diff --git a/charts/k8s-gerrit/container-images/gerrit-init/.dockerignore b/charts/k8s-gerrit/container-images/gerrit-init/.dockerignore
new file mode 100644
index 0000000..7c68535
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/.dockerignore
@@ -0,0 +1 @@
+tools/__pycache__
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/Dockerfile b/charts/k8s-gerrit/container-images/gerrit-init/Dockerfile
new file mode 100644
index 0000000..70da7aa
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/Dockerfile
@@ -0,0 +1,29 @@
+ARG TAG=latest
+FROM gerrit-base:${TAG}
+
+USER root
+
+COPY dependencies/* /var/tools/
+COPY requirements.txt /var/tools/
+WORKDIR /var/tools
+
+RUN apk update && \
+    apk add --no-cache \
+      python3 && \
+    python3 -m ensurepip && \
+    rm -r /usr/lib/python*/ensurepip && \
+    # follow https://til.simonwillison.net/python/pip-tools to update hashes
+    pip3 install --require-hashes -r requirements.txt --no-cache --upgrade && \
+    pipenv install --python 3.11 --system
+
+COPY tools /var/tools/
+COPY config/* /var/config/
+
+RUN mkdir -p /var/mnt/git \
+  && mkdir -p /var/mnt/logs \
+  && chown -R gerrit:users /var/mnt
+
+USER gerrit
+
+ENTRYPOINT ["python3", "/var/tools/gerrit-initializer"]
+CMD ["-s", "/var/gerrit", "-c", "/var/config/gerrit-init.yaml", "init"]
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/README.md b/charts/k8s-gerrit/container-images/gerrit-init/README.md
new file mode 100644
index 0000000..37b5bda
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/README.md
@@ -0,0 +1,64 @@
+# Gerrit replica init container image
+
+Kubernetes init container for initializing gerrit. The python script running in
+the container initializes Gerrit including the installation of configured
+plugins.
+
+## Content
+
+* gerrit-base image
+
+## Setup and configuration
+
+* install python 3
+* copy tool scripts
+
+## Start
+
+* start the container via start script `python3 /var/tools/gerrit-initializer init`
+
+The `main.py init`-command
+
+* reads configuration from gerrit.config (via `gerrit_config_parser.py`)
+* initializes Gerrit
+
+The `main.py validate_notedb`-command
+
+* validates and waits for the repository `All-Projects.git` with the refs
+`refs/meta/config`.
+* validates and waits for the repository `All-Users.git` with the ref
+`refs/meta/config`.
+
+## Configuration
+
+The configuration format looks as follows:
+
+```yaml
+plugins: []
+# A plugin packaged in the gerrit.war-file
+# - name: download-commands
+
+# A plugin packaged in the gerrit.war-file that will also be installed as a
+# lib
+# - name: replication
+#   installAsLibrary: true
+
+# A plugin that will be downloaded on startup
+# - name: delete-project
+#   url: https://example.com/gerrit-plugins/delete-project.jar
+#   sha1:
+#   installAsLibrary: false
+libs: []
+# A lib that will be downloaded on startup
+# - name: global-refdb
+#   url: https://example.com/gerrit-plugins/global-refdb.jar
+#   sha1:
+#DEPRECATED: `pluginCache` was deprecated in favor of `pluginCacheEnabled`
+# pluginCache: true
+pluginCacheEnabled: false
+pluginCacheDir: null
+# Can be either true to use default CA certificates, false to disable SSL
+# verification or a path to a custom CA certificate store.
+caCertPath: true
+highAvailability: false
+```
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/config/gerrit-init.yaml b/charts/k8s-gerrit/container-images/gerrit-init/config/gerrit-init.yaml
new file mode 100644
index 0000000..65b7b28
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/config/gerrit-init.yaml
@@ -0,0 +1 @@
+pluginCache: false
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/dependencies/Pipfile b/charts/k8s-gerrit/container-images/gerrit-init/dependencies/Pipfile
new file mode 100644
index 0000000..6a55c64
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/dependencies/Pipfile
@@ -0,0 +1,13 @@
+[[source]]
+name = "pypi"
+url = "https://pypi.org/simple"
+verify_ssl = true
+
+[dev-packages]
+
+[packages]
+pyyaml = "~=6.0"
+requests = "~=2.31.0"
+
+[requires]
+python_version = "3.11"
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/dependencies/Pipfile.lock b/charts/k8s-gerrit/container-images/gerrit-init/dependencies/Pipfile.lock
new file mode 100644
index 0000000..10e814e
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/dependencies/Pipfile.lock
@@ -0,0 +1,180 @@
+{
+    "_meta": {
+        "hash": {
+            "sha256": "bf7e62c1c2c8f726ef7dab0c66bddf079c2f4cee97a1d5a4d4546fcc4f41600f"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "3.11"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "certifi": {
+            "hashes": [
+                "sha256:0f0d56dc5a6ad56fd4ba36484d6cc34451e1c6548c61daad8c320169f91eddc7",
+                "sha256:c6c2e98f5c7869efca1f8916fed228dd91539f9f1b444c314c06eef02980c716"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==2023.5.7"
+        },
+        "charset-normalizer": {
+            "hashes": [
+                "sha256:04e57ab9fbf9607b77f7d057974694b4f6b142da9ed4a199859d9d4d5c63fe96",
+                "sha256:09393e1b2a9461950b1c9a45d5fd251dc7c6f228acab64da1c9c0165d9c7765c",
+                "sha256:0b87549028f680ca955556e3bd57013ab47474c3124dc069faa0b6545b6c9710",
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+            "markers": "python_full_version >= '3.7.0'",
+            "version": "==3.2.0"
+        },
+        "idna": {
+            "hashes": [
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+            "version": "==3.4"
+        },
+        "pyyaml": {
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+                "sha256:f22ac1c3cac4dbc50079e965eba2c1058622631e526bd9afd45fedd49ba781fa",
+                "sha256:faca3bdcf85b2fc05d06ff3fbc1f83e1391b3e724afa3feba7d13eeab355484c",
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+                "sha256:fd1592b3fdf65fff2ad0004b5e363300ef59ced41c2e6b3a99d4089fa8c5435d",
+                "sha256:fd66fc5d0da6d9815ba2cebeb4205f95818ff4b79c3ebe268e75d961704af52f"
+            ],
+            "index": "pypi",
+            "version": "==6.0.1"
+        },
+        "requests": {
+            "hashes": [
+                "sha256:58cd2187c01e70e6e26505bca751777aa9f2ee0b7f4300988b709f44e013003f",
+                "sha256:942c5a758f98d790eaed1a29cb6eefc7ffb0d1cf7af05c3d2791656dbd6ad1e1"
+            ],
+            "index": "pypi",
+            "version": "==2.31.0"
+        },
+        "urllib3": {
+            "hashes": [
+                "sha256:48e7fafa40319d358848e1bc6809b208340fafe2096f1725d05d67443d0483d1",
+                "sha256:bee28b5e56addb8226c96f7f13ac28cb4c301dd5ea8a6ca179c0b9835e032825"
+            ],
+            "markers": "python_version >= '3.7'",
+            "version": "==2.0.3"
+        }
+    },
+    "develop": {}
+}
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/requirements.in b/charts/k8s-gerrit/container-images/gerrit-init/requirements.in
new file mode 100644
index 0000000..a7f62a1
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/requirements.in
@@ -0,0 +1,3 @@
+setuptools
+wheel
+pipenv
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/requirements.txt b/charts/k8s-gerrit/container-images/gerrit-init/requirements.txt
new file mode 100644
index 0000000..c2de41b
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/requirements.txt
@@ -0,0 +1,46 @@
+#
+# This file is autogenerated by pip-compile with Python 3.10
+# by the following command:
+#
+#    pip-compile --allow-unsafe --generate-hashes requirements.in
+#
+certifi==2022.12.7 \
+    --hash=sha256:35824b4c3a97115964b408844d64aa14db1cc518f6562e8d7261699d1350a9e3 \
+    --hash=sha256:4ad3232f5e926d6718ec31cfc1fcadfde020920e278684144551c91769c7bc18
+    # via pipenv
+distlib==0.3.6 \
+    --hash=sha256:14bad2d9b04d3a36127ac97f30b12a19268f211063d8f8ee4f47108896e11b46 \
+    --hash=sha256:f35c4b692542ca110de7ef0bea44d73981caeb34ca0b9b6b2e6d7790dda8f80e
+    # via virtualenv
+filelock==3.9.0 \
+    --hash=sha256:7b319f24340b51f55a2bf7a12ac0755a9b03e718311dac567a0f4f7fabd2f5de \
+    --hash=sha256:f58d535af89bb9ad5cd4df046f741f8553a418c01a7856bf0d173bbc9f6bd16d
+    # via virtualenv
+pipenv==2023.2.18 \
+    --hash=sha256:4e45226d197ad84fa11a9d944cb0e1bfcc197919944d0af96e55adf7e1fdc76c \
+    --hash=sha256:ecbe4e301616c5fa3128d557507d79a35d895cd922139969929d7357b66b1509
+    # via -r requirements.in
+platformdirs==3.0.0 \
+    --hash=sha256:8a1228abb1ef82d788f74139988b137e78692984ec7b08eaa6c65f1723af28f9 \
+    --hash=sha256:b1d5eb14f221506f50d6604a561f4c5786d9e80355219694a1b244bcd96f4567
+    # via virtualenv
+virtualenv==20.19.0 \
+    --hash=sha256:37a640ba82ed40b226599c522d411e4be5edb339a0c0de030c0dc7b646d61590 \
+    --hash=sha256:54eb59e7352b573aa04d53f80fc9736ed0ad5143af445a1e539aada6eb947dd1
+    # via pipenv
+virtualenv-clone==0.5.7 \
+    --hash=sha256:418ee935c36152f8f153c79824bb93eaf6f0f7984bae31d3f48f350b9183501a \
+    --hash=sha256:44d5263bceed0bac3e1424d64f798095233b64def1c5689afa43dc3223caf5b0
+    # via pipenv
+wheel==0.38.4 \
+    --hash=sha256:965f5259b566725405b05e7cf774052044b1ed30119b5d586b2703aafe8719ac \
+    --hash=sha256:b60533f3f5d530e971d6737ca6d58681ee434818fab630c83a734bb10c083ce8
+    # via -r requirements.in
+
+# The following packages are considered to be unsafe in a requirements file:
+setuptools==67.4.0 \
+    --hash=sha256:e5fd0a713141a4a105412233c63dc4e17ba0090c8e8334594ac790ec97792330 \
+    --hash=sha256:f106dee1b506dee5102cc3f3e9e68137bbad6d47b616be7991714b0c62204251
+    # via
+    #   -r requirements.in
+    #   pipenv
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/__main__.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/__main__.py
new file mode 100644
index 0000000..e49cc31
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/__main__.py
@@ -0,0 +1,18 @@
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from main import main
+
+if __name__ == "__main__":
+    main()
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/__init__.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/__init__.py
new file mode 100644
index 0000000..2230656
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/__init__.py
@@ -0,0 +1,13 @@
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/config/__init__.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/config/__init__.py
new file mode 100644
index 0000000..2230656
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/config/__init__.py
@@ -0,0 +1,13 @@
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/config/init_config.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/config/init_config.py
new file mode 100644
index 0000000..68a6f00
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/config/init_config.py
@@ -0,0 +1,90 @@
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os.path
+
+import yaml
+
+
+class InitConfig:
+    def __init__(self):
+        self.plugins = []
+        self.libs = []
+        self.plugin_cache_enabled = False
+        self.plugin_cache_dir = None
+
+        self.ca_cert_path = True
+
+        self.is_ha = False
+        self.refdb = False
+
+    def parse(self, config_file):
+        if not os.path.exists(config_file):
+            raise FileNotFoundError(f"Could not find config file: {config_file}")
+
+        with open(config_file, "r", encoding="utf-8") as f:
+            config = yaml.load(f, Loader=yaml.SafeLoader)
+
+        if config is None:
+            raise ValueError(f"Invalid config-file: {config_file}")
+
+        if "plugins" in config:
+            self.plugins = config["plugins"]
+        if "libs" in config:
+            self.libs = config["libs"]
+        # DEPRECATED: `pluginCache` was deprecated in favor of `pluginCacheEnabled`
+        if "pluginCache" in config:
+            self.plugin_cache_enabled = config["pluginCache"]
+        if "pluginCacheEnabled" in config:
+            self.plugin_cache_enabled = config["pluginCacheEnabled"]
+        if "pluginCacheDir" in config and config["pluginCacheDir"]:
+            self.plugin_cache_dir = config["pluginCacheDir"]
+
+        if "caCertPath" in config:
+            self.ca_cert_path = config["caCertPath"]
+
+        self.is_ha = "highAvailability" in config and config["highAvailability"]
+        if "refdb" in config:
+            self.refdb = config["refdb"]
+
+        return self
+
+    def get_plugins(self):
+        return self.plugins
+
+    def get_plugin_names(self):
+        return set([p["name"] for p in self.plugins])
+
+    def get_libs(self):
+        return self.libs
+
+    def get_lib_names(self):
+        return set([p["name"] for p in self.libs])
+
+    def get_packaged_plugins(self):
+        return list(filter(lambda x: "url" not in x, self.plugins))
+
+    def get_downloaded_plugins(self):
+        return list(filter(lambda x: "url" in x, self.plugins))
+
+    def get_plugins_installed_as_lib(self):
+        return [
+            lib["name"]
+            for lib in list(
+                filter(
+                    lambda x: "installAsLibrary" in x and x["installAsLibrary"],
+                    self.plugins,
+                )
+            )
+        ]
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/helpers/__init__.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/helpers/__init__.py
new file mode 100644
index 0000000..2230656
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/helpers/__init__.py
@@ -0,0 +1,13 @@
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/helpers/git.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/helpers/git.py
new file mode 100644
index 0000000..f21b28d
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/helpers/git.py
@@ -0,0 +1,76 @@
+# Copyright (C) 2018 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import subprocess
+
+
+class GitConfigParser:
+    def __init__(self, config_path):
+        self.path = config_path
+
+    def _execute_shell_command_and_get_output_lines(self, command):
+        sub_process_run = subprocess.run(
+            command.split(), stdout=subprocess.PIPE, check=True, universal_newlines=True
+        )
+        return [line.strip() for line in sub_process_run.stdout.splitlines()]
+
+    def _get_value(self, key):
+        command = f"git config -f {self.path} --get {key}"
+        return self._execute_shell_command_and_get_output_lines(command)
+
+    def list(self):
+        command = f"git config -f {self.path} --list"
+        options = self._execute_shell_command_and_get_output_lines(command)
+        option_list = []
+        for opt in options:
+            parsed_opt = {}
+            full_key, value = opt.split("=", 1)
+            parsed_opt["value"] = value
+            full_key = full_key.split(".")
+            parsed_opt["section"] = full_key[0]
+            if len(full_key) == 2:
+                parsed_opt["subsection"] = None
+                parsed_opt["key"] = full_key[1]
+            elif len(full_key) == 3:
+                parsed_opt["subsection"] = full_key[1]
+                parsed_opt["key"] = full_key[2]
+            option_list.append(parsed_opt)
+
+        return option_list
+
+    def get(self, key, default=None):
+        """
+        Returns value of given key in the configuration file. If the key appears
+        multiple times, the last value is returned.
+        """
+        try:
+            return self._get_value(key)[-1]
+        except subprocess.CalledProcessError:
+            return default
+
+    def get_boolean(self, key, default=False):
+        """
+        Returns boolean value of given key in the configuration file. If the key
+        appears multiple times, the last value is returned.
+        """
+        if not isinstance(default, bool):
+            raise TypeError("Default has to be a boolean.")
+
+        try:
+            value = self._get_value(key)[-1].lower()
+            if value not in ["true", "false"]:
+                raise TypeError("Value is not a boolean.")
+            return value == "true"
+        except subprocess.CalledProcessError:
+            return default
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/helpers/log.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/helpers/log.py
new file mode 100644
index 0000000..06aa72c
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/helpers/log.py
@@ -0,0 +1,26 @@
+#!/usr/bin/python3
+
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+
+
+def get_logger(name):
+    log = logging.Logger(name)
+    handler = logging.StreamHandler()
+    handler.setFormatter(logging.Formatter("[%(asctime)s] %(levelname)s %(message)s"))
+    log.addHandler(handler)
+    log.setLevel(logging.DEBUG)
+    return log
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/__init__.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/__init__.py
new file mode 100644
index 0000000..2230656
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/__init__.py
@@ -0,0 +1,13 @@
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/download_plugins.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/download_plugins.py
new file mode 100755
index 0000000..2c9ace0
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/download_plugins.py
@@ -0,0 +1,372 @@
+#!/usr/bin/python3
+
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import hashlib
+import os
+import shutil
+import time
+
+from abc import ABC, abstractmethod
+from zipfile import ZipFile
+
+import requests
+
+from ..helpers import log
+
+LOG = log.get_logger("init")
+MAX_LOCK_LIFETIME = 60
+MAX_CACHED_VERSIONS = 5
+
+REQUIRED_PLUGINS = ["healthcheck"]
+REQUIRED_HA_PLUGINS = ["high-availability"]
+REQUIRED_HA_LIBS = ["high-availability", "global-refdb"]
+
+
+class InvalidPluginException(Exception):
+    """Exception to be raised, if the downloaded plugin is not valid."""
+
+
+class MissingRequiredPluginException(Exception):
+    """Exception to be raised, if the downloaded plugin is not valid."""
+
+
+class AbstractPluginInstaller(ABC):
+    def __init__(self, site, config):
+        self.site = site
+        self.config = config
+
+        self.required_plugins = self._get_required_plugins()
+        self.required_libs = self._get_required_libs()
+
+        self.plugin_dir = os.path.join(site, "plugins")
+        self.lib_dir = os.path.join(site, "lib")
+        self.plugins_changed = False
+
+    def _create_plugins_dir(self):
+        if not os.path.exists(self.plugin_dir):
+            os.makedirs(self.plugin_dir)
+            LOG.info("Created plugin installation directory: %s", self.plugin_dir)
+
+    def _create_lib_dir(self):
+        if not os.path.exists(self.lib_dir):
+            os.makedirs(self.lib_dir)
+            LOG.info("Created lib installation directory: %s", self.lib_dir)
+
+    def _get_installed_plugins(self):
+        return self._get_installed_jars(self.plugin_dir)
+
+    def _get_installed_libs(self):
+        return self._get_installed_jars(self.lib_dir)
+
+    @staticmethod
+    def _get_installed_jars(dir):
+        if os.path.exists(dir):
+            return [f for f in os.listdir(dir) if f.endswith(".jar")]
+
+        return []
+
+    def _get_required_plugins(self):
+        required = REQUIRED_PLUGINS.copy()
+        if self.config.is_ha:
+            required.extend(REQUIRED_HA_PLUGINS)
+        if self.config.refdb:
+            required.append(f"{self.config.refdb}-refdb")
+        LOG.info("Requiring plugins: %s", required)
+        return required
+
+    def _get_required_libs(self):
+        required = []
+        if self.config.is_ha:
+            required.extend(REQUIRED_HA_LIBS)
+        LOG.info("Requiring libs: %s", required)
+        return required
+
+    def _install_required_plugins(self):
+        for plugin in self.required_plugins:
+            if plugin in self.config.get_plugin_names():
+                continue
+
+            self._install_required_jar(plugin, self.plugin_dir)
+
+    def _install_required_libs(self):
+        for lib in self.required_libs:
+            if lib in self.config.get_lib_names():
+                continue
+
+            self._install_required_jar(lib, self.lib_dir)
+
+    def _install_required_jar(self, jar, target_dir):
+        with ZipFile("/var/war/gerrit.war", "r") as war:
+            # Lib modules can be packaged as a plugin. However, they could
+            # currently not be installed by the init pgm tool.
+            if f"WEB-INF/plugins/{jar}.jar" in war.namelist():
+                self._install_plugin_from_war(jar, target_dir)
+                return
+        try:
+            self._install_jar_from_container(jar, target_dir)
+        except FileNotFoundError:
+            raise MissingRequiredPluginException(f"Required jar {jar} was not found.")
+
+    def _install_jar_from_container(self, plugin, target_dir):
+        source_file = os.path.join("/var/plugins", plugin + ".jar")
+        target_file = os.path.join(target_dir, plugin + ".jar")
+        LOG.info(
+            "Installing plugin %s from container to %s.",
+            plugin,
+            target_file,
+        )
+        if not os.path.exists(source_file):
+            raise FileNotFoundError(
+                "Unable to find required plugin in container: " + plugin
+            )
+        if os.path.exists(target_file) and self._get_file_sha(
+            source_file
+        ) == self._get_file_sha(target_file):
+            return
+
+        shutil.copyfile(source_file, target_file)
+        self.plugins_changed = True
+
+    def _install_plugins_from_war(self):
+        for plugin in self.config.get_packaged_plugins():
+            self._install_plugin_from_war(plugin["name"], self.plugin_dir)
+
+    def _install_plugin_from_war(self, plugin, target_dir):
+        LOG.info("Installing packaged plugin %s.", plugin)
+        with ZipFile("/var/war/gerrit.war", "r") as war:
+            war.extract(f"WEB-INF/plugins/{plugin}.jar", self.plugin_dir)
+
+        source_file = f"{self.plugin_dir}/WEB-INF/plugins/{plugin}.jar"
+        target_file = os.path.join(target_dir, f"{plugin}.jar")
+        if not os.path.exists(target_file) or self._get_file_sha(
+            source_file
+        ) != self._get_file_sha(target_file):
+            os.rename(source_file, target_file)
+            self.plugins_changed = True
+
+        shutil.rmtree(os.path.join(self.plugin_dir, "WEB-INF"), ignore_errors=True)
+
+    @staticmethod
+    def _get_file_sha(file):
+        file_hash = hashlib.sha1()
+        with open(file, "rb") as f:
+            while True:
+                chunk = f.read(64000)
+                if not chunk:
+                    break
+                file_hash.update(chunk)
+
+        LOG.debug("SHA1 of file '%s' is %s", file, file_hash.hexdigest())
+
+        return file_hash.hexdigest()
+
+    def _remove_unwanted_plugins(self):
+        wanted_plugins = list(self.config.get_plugins())
+        wanted_plugins.extend(self.required_plugins)
+        self._remove_unwanted(
+            wanted_plugins, self._get_installed_plugins(), self.plugin_dir
+        )
+
+    def _remove_unwanted_libs(self):
+        wanted_libs = list(self.config.get_libs())
+        wanted_libs.extend(self.required_libs)
+        wanted_libs.extend(self.config.get_plugins_installed_as_lib())
+        self._remove_unwanted(wanted_libs, self._get_installed_libs(), self.lib_dir)
+
+    @staticmethod
+    def _remove_unwanted(wanted, installed, dir):
+        for plugin in installed:
+            if os.path.splitext(plugin)[0] not in wanted:
+                os.remove(os.path.join(dir, plugin))
+                LOG.info("Removed plugin %s", plugin)
+
+    def _symlink_plugins_to_lib(self):
+        if not os.path.exists(self.lib_dir):
+            os.makedirs(self.lib_dir)
+        else:
+            for f in os.listdir(self.lib_dir):
+                path = os.path.join(self.lib_dir, f)
+                if (
+                    os.path.islink(path)
+                    and os.path.splitext(f)[0]
+                    not in self.config.get_plugins_installed_as_lib()
+                ):
+                    os.unlink(path)
+                    LOG.info("Removed symlink %s", f)
+        for lib in self.config.get_plugins_installed_as_lib():
+            plugin_path = os.path.join(self.plugin_dir, f"{lib}.jar")
+            if os.path.exists(plugin_path):
+                try:
+                    os.symlink(plugin_path, os.path.join(self.lib_dir, f"{lib}.jar"))
+                except FileExistsError:
+                    continue
+            else:
+                raise FileNotFoundError(
+                    f"Could not find plugin {lib} to symlink to lib-directory."
+                )
+
+    def execute(self):
+        self._create_plugins_dir()
+        self._create_lib_dir()
+
+        self._remove_unwanted_plugins()
+        self._remove_unwanted_libs()
+
+        self._install_required_plugins()
+        self._install_required_libs()
+
+        self._install_plugins_from_war()
+
+        for plugin in self.config.get_downloaded_plugins():
+            self._install_plugin(plugin)
+
+        for plugin in self.config.get_libs():
+            self._install_lib(plugin)
+
+        self._symlink_plugins_to_lib()
+
+    def _download_plugin(self, plugin, target):
+        LOG.info("Downloading %s plugin to %s", plugin["name"], target)
+        try:
+            response = requests.get(plugin["url"])
+        except requests.exceptions.SSLError:
+            response = requests.get(plugin["url"], verify=self.config.ca_cert_path)
+
+        with open(target, "wb") as f:
+            f.write(response.content)
+
+        file_sha = self._get_file_sha(target)
+
+        if file_sha != plugin["sha1"]:
+            os.remove(target)
+            raise InvalidPluginException(
+                (
+                    f"SHA1 of downloaded file ({file_sha}) did not match "
+                    f"expected SHA1 ({plugin['sha1']}). "
+                    f"Removed downloaded file ({target})"
+                )
+            )
+
+    def _install_plugin(self, plugin):
+        self._install_jar(plugin, self.plugin_dir)
+
+    def _install_lib(self, lib):
+        self._install_jar(lib, self.lib_dir)
+
+    @abstractmethod
+    def _install_jar(self, plugin, target_dir):
+        pass
+
+
+class PluginInstaller(AbstractPluginInstaller):
+    def _install_jar(self, plugin, target_dir):
+        target = os.path.join(target_dir, f"{plugin['name']}.jar")
+        if os.path.exists(target) and self._get_file_sha(target) == plugin["sha1"]:
+            return
+
+        self._download_plugin(plugin, target)
+
+        self.plugins_changed = True
+
+
+class CachedPluginInstaller(AbstractPluginInstaller):
+    @staticmethod
+    def _cleanup_cache(plugin_cache_dir):
+        cached_files = [
+            os.path.join(plugin_cache_dir, f) for f in os.listdir(plugin_cache_dir)
+        ]
+        while len(cached_files) > MAX_CACHED_VERSIONS:
+            oldest_file = min(cached_files, key=os.path.getctime)
+            LOG.info(
+                "Too many cached files in %s. Removing file %s",
+                plugin_cache_dir,
+                oldest_file,
+            )
+            os.remove(oldest_file)
+            cached_files.remove(oldest_file)
+
+    @staticmethod
+    def _create_download_lock(lock_path):
+        with open(lock_path, "w", encoding="utf-8") as f:
+            f.write(os.environ["HOSTNAME"])
+            LOG.debug("Created download lock %s", lock_path)
+
+    @staticmethod
+    def _create_plugin_cache_dir(plugin_cache_dir):
+        if not os.path.exists(plugin_cache_dir):
+            os.makedirs(plugin_cache_dir)
+            LOG.info("Created cache directory %s", plugin_cache_dir)
+
+    def _get_cached_plugin_path(self, plugin):
+        return os.path.join(
+            self.config.plugin_cache_dir,
+            plugin["name"],
+            f"{plugin['name']}-{plugin['sha1']}.jar",
+        )
+
+    def _install_from_cache_or_download(self, plugin, target):
+        cached_plugin_path = self._get_cached_plugin_path(plugin)
+
+        if os.path.exists(cached_plugin_path):
+            LOG.info("Installing %s plugin from cache.", plugin["name"])
+        else:
+            LOG.info("%s not found in cache. Downloading it.", plugin["name"])
+            self._create_plugin_cache_dir(os.path.dirname(cached_plugin_path))
+
+            lock_path = f"{cached_plugin_path}.lock"
+            while os.path.exists(lock_path):
+                LOG.info(
+                    "Download lock found (%s). Waiting %d seconds for it to be released.",
+                    lock_path,
+                    MAX_LOCK_LIFETIME,
+                )
+                lock_timestamp = os.path.getmtime(lock_path)
+                if time.time() > lock_timestamp + MAX_LOCK_LIFETIME:
+                    LOG.info("Stale download lock found (%s).", lock_path)
+                    self._remove_download_lock(lock_path)
+
+            self._create_download_lock(lock_path)
+
+            try:
+                self._download_plugin(plugin, cached_plugin_path)
+            finally:
+                self._remove_download_lock(lock_path)
+
+        shutil.copy(cached_plugin_path, target)
+        self._cleanup_cache(os.path.dirname(cached_plugin_path))
+
+    def _install_jar(self, plugin, target_dir):
+        install_path = os.path.join(target_dir, f"{plugin['name']}.jar")
+        if (
+            os.path.exists(install_path)
+            and self._get_file_sha(install_path) == plugin["sha1"]
+        ):
+            return
+
+        self.plugins_changed = True
+        self._install_from_cache_or_download(plugin, install_path)
+
+    @staticmethod
+    def _remove_download_lock(lock_path):
+        os.remove(lock_path)
+        LOG.debug("Removed download lock %s", lock_path)
+
+
+def get_installer(site, config):
+    plugin_installer = (
+        CachedPluginInstaller if config.plugin_cache_enabled else PluginInstaller
+    )
+    return plugin_installer(site, config)
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/init.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/init.py
new file mode 100755
index 0000000..4931984
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/init.py
@@ -0,0 +1,227 @@
+# Copyright (C) 2018 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import shutil
+import subprocess
+import sys
+
+from ..helpers import git, log
+from .download_plugins import get_installer
+from .reindex import IndexType, get_reindexer
+from .validate_notedb import NoteDbValidator
+
+LOG = log.get_logger("init")
+MNT_PATH = "/var/mnt"
+
+
+class GerritInit:
+    def __init__(self, site, config):
+        self.site = site
+        self.config = config
+
+        self.plugin_installer = get_installer(self.site, self.config)
+
+        self.gerrit_config = git.GitConfigParser(
+            os.path.join(MNT_PATH, "etc/config/gerrit.config")
+        )
+        self.is_online_reindex = self.gerrit_config.get_boolean(
+            "index.onlineUpgrade", True
+        )
+        self.force_offline_reindex = False
+        self.installed_plugins = self._get_installed_plugins()
+
+        self.is_replica = self.gerrit_config.get_boolean("container.replica")
+        self.pid_file = f"{self.site}/logs/gerrit.pid"
+
+    def _get_gerrit_version(self, gerrit_war_path):
+        command = f"java -jar {gerrit_war_path} version"
+        version_process = subprocess.run(
+            command.split(), stdout=subprocess.PIPE, check=True
+        )
+        return version_process.stdout.decode().strip()
+
+    def _get_installed_plugins(self):
+        plugin_path = os.path.join(self.site, "plugins")
+        installed_plugins = set()
+
+        if os.path.exists(plugin_path):
+            for f in os.listdir(plugin_path):
+                if os.path.isfile(os.path.join(plugin_path, f)) and f.endswith(".jar"):
+                    installed_plugins.add(os.path.splitext(f)[0])
+
+        return installed_plugins
+
+    def _gerrit_war_updated(self):
+        installed_war_path = os.path.join(self.site, "bin", "gerrit.war")
+        installed_version = self._get_gerrit_version(installed_war_path)
+        provided_version = self._get_gerrit_version("/var/war/gerrit.war")
+        LOG.info(
+            "Installed Gerrit version: %s; Provided Gerrit version: %s). ",
+            installed_version,
+            provided_version,
+        )
+        installed_minor_version = installed_version.split(".")[0:2]
+        provided_minor_version = provided_version.split(".")[0:2]
+
+        if (
+            not self.is_online_reindex
+            and installed_minor_version != provided_minor_version
+        ):
+            self.force_offline_reindex = True
+        return installed_version != provided_version
+
+    def _needs_init(self):
+        installed_war_path = os.path.join(self.site, "bin", "gerrit.war")
+        if not os.path.exists(installed_war_path):
+            LOG.info("Gerrit is not yet installed. Initializing new site.")
+            return True
+
+        if self._gerrit_war_updated():
+            LOG.info("Reinitializing site to perform update.")
+            return True
+
+        if self.plugin_installer.plugins_changed:
+            LOG.info("Plugins were installed or updated. Initializing.")
+            return True
+
+        if self.config.get_plugin_names().difference(self.installed_plugins):
+            LOG.info("Reininitializing site to install additional plugins.")
+            return True
+
+        LOG.info("No initialization required.")
+        return False
+
+    def _ensure_symlink(self, src, target):
+        if not os.path.exists(src):
+            raise FileNotFoundError(f"Unable to find mounted dir: {src}")
+
+        if os.path.islink(target) and os.path.realpath(target) == src:
+            return
+
+        if os.path.exists(target):
+            if os.path.isdir(target) and not os.path.islink(target):
+                shutil.rmtree(target)
+            else:
+                os.remove(target)
+
+        os.symlink(src, target)
+
+    def _symlink_mounted_site_components(self):
+        self._ensure_symlink(f"{MNT_PATH}/git", f"{self.site}/git")
+        self._ensure_symlink(f"{MNT_PATH}/logs", f"{self.site}/logs")
+
+        mounted_shared_dir = f"{MNT_PATH}/shared"
+        if not self.is_replica and os.path.exists(mounted_shared_dir):
+            self._ensure_symlink(mounted_shared_dir, f"{self.site}/shared")
+
+        index_type = self.gerrit_config.get("index.type", default=IndexType.LUCENE.name)
+        if IndexType[index_type.upper()] is IndexType.ELASTICSEARCH:
+            self._ensure_symlink(f"{MNT_PATH}/index", f"{self.site}/index")
+
+        data_dir = f"{self.site}/data"
+        if os.path.exists(data_dir):
+            for file_or_dir in os.listdir(data_dir):
+                abs_path = os.path.join(data_dir, file_or_dir)
+                if os.path.islink(abs_path) and not os.path.exists(
+                    os.path.realpath(abs_path)
+                ):
+                    os.unlink(abs_path)
+        else:
+            os.makedirs(data_dir)
+
+        mounted_data_dir = f"{MNT_PATH}/data"
+        if os.path.exists(mounted_data_dir):
+            for file_or_dir in os.listdir(mounted_data_dir):
+                abs_path = os.path.join(data_dir, file_or_dir)
+                abs_mounted_path = os.path.join(mounted_data_dir, file_or_dir)
+                if os.path.isdir(abs_mounted_path):
+                    self._ensure_symlink(abs_mounted_path, abs_path)
+
+    def _symlink_configuration(self):
+        etc_dir = f"{self.site}/etc"
+        if not os.path.exists(etc_dir):
+            os.makedirs(etc_dir)
+
+        for config_type in ["config", "secret"]:
+            if os.path.exists(f"{MNT_PATH}/etc/{config_type}"):
+                for file_or_dir in os.listdir(f"{MNT_PATH}/etc/{config_type}"):
+                    if os.path.isfile(
+                        os.path.join(f"{MNT_PATH}/etc/{config_type}", file_or_dir)
+                    ):
+                        self._ensure_symlink(
+                            os.path.join(f"{MNT_PATH}/etc/{config_type}", file_or_dir),
+                            os.path.join(etc_dir, file_or_dir),
+                        )
+
+    def _remove_auto_generated_ssh_keys(self):
+        etc_dir = f"{self.site}/etc"
+        if not os.path.exists(etc_dir):
+            return
+
+        for file_or_dir in os.listdir(etc_dir):
+            full_path = os.path.join(etc_dir, file_or_dir)
+            if os.path.isfile(full_path) and file_or_dir.startswith("ssh_host_"):
+                os.remove(full_path)
+
+    def execute(self):
+        if not self.is_replica:
+            self._symlink_mounted_site_components()
+        elif not NoteDbValidator(MNT_PATH).check():
+            LOG.info("NoteDB not ready. Initializing repositories.")
+            self._symlink_mounted_site_components()
+        self._symlink_configuration()
+
+        if os.path.exists(self.pid_file):
+            os.remove(self.pid_file)
+
+        self.plugin_installer.execute()
+
+        if self._needs_init():
+            if self.gerrit_config:
+                LOG.info("Existing gerrit.config found.")
+                dev_option = (
+                    "--dev"
+                    if self.gerrit_config.get(
+                        "auth.type", "development_become_any_account"
+                    ).lower()
+                    == "development_become_any_account"
+                    else ""
+                )
+            else:
+                LOG.info("No gerrit.config found. Initializing default site.")
+                dev_option = "--dev"
+
+            flags = f"--no-auto-start --batch {dev_option}"
+
+            command = f"java -jar /var/war/gerrit.war init {flags} -d {self.site}"
+
+            init_process = subprocess.run(
+                command.split(), stdout=subprocess.PIPE, check=True
+            )
+
+            if init_process.returncode > 0:
+                LOG.error(
+                    "An error occurred, when initializing Gerrit. Exit code: %d",
+                    init_process.returncode,
+                )
+                sys.exit(1)
+
+            self._remove_auto_generated_ssh_keys()
+            self._symlink_configuration()
+
+            if self.is_replica:
+                self._symlink_mounted_site_components()
+
+        get_reindexer(self.site, self.config).start(self.force_offline_reindex)
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/reindex.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/reindex.py
new file mode 100755
index 0000000..e5ec6df
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/reindex.py
@@ -0,0 +1,208 @@
+#!/usr/bin/python3
+
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import abc
+import enum
+import os.path
+import subprocess
+import sys
+
+import requests
+
+from ..helpers import git, log
+
+LOG = log.get_logger("reindex")
+MNT_PATH = "/var/mnt"
+INDEXES_PRIMARY = set(["accounts", "changes", "groups", "projects"])
+INDEXES_REPLICA = set(["groups"])
+
+
+class IndexType(enum.Enum):
+    LUCENE = enum.auto()
+    ELASTICSEARCH = enum.auto()
+
+
+class GerritAbstractReindexer(abc.ABC):
+    def __init__(self, gerrit_site_path, config):
+        self.gerrit_site_path = gerrit_site_path
+        self.index_config_path = f"{self.gerrit_site_path}/index/gerrit_index.config"
+        self.init_config = config
+
+        self.gerrit_config = git.GitConfigParser(
+            os.path.join(MNT_PATH, "etc/config/gerrit.config")
+        )
+        self.is_online_reindex = self.gerrit_config.get_boolean(
+            "index.onlineUpgrade", True
+        )
+        self.is_replica = self.gerrit_config.get_boolean("container.replica", False)
+
+        self.configured_indices = self._parse_gerrit_index_config()
+
+    @abc.abstractmethod
+    def _get_indices(self):
+        pass
+
+    def _parse_gerrit_index_config(self):
+        indices = {}
+        if os.path.exists(self.index_config_path):
+            config = git.GitConfigParser(self.index_config_path)
+            options = config.list()
+            for opt in options:
+                name, version = opt["subsection"].rsplit("_", 1)
+                ready = opt["value"].lower() == "true"
+                if name in indices:
+                    indices[name] = {
+                        "read": version if ready else indices[name]["read"],
+                        "latest_write": max(version, indices[name]["latest_write"]),
+                    }
+                else:
+                    indices[name] = {
+                        "read": version if ready else None,
+                        "latest_write": version,
+                    }
+        return indices
+
+    def _get_not_ready_indices(self):
+        not_ready_indices = []
+        for index, index_attrs in self.configured_indices.items():
+            if not index_attrs["read"]:
+                LOG.info("Index %s not ready.", index)
+                not_ready_indices.append(index)
+        index_set = INDEXES_REPLICA if self.is_replica else INDEXES_PRIMARY
+        not_ready_indices.extend(index_set.difference(self.configured_indices.keys()))
+        return not_ready_indices
+
+    def _indexes_need_update(self):
+        indices = self._get_indices()
+
+        if not indices:
+            return True
+
+        for index, index_attrs in self.configured_indices.items():
+            if (
+                index not in indices
+                or index_attrs["latest_write"] != indices[index]
+                or index_attrs["read"] != index_attrs["latest_write"]
+            ):
+                return True
+        return False
+
+    def reindex(self, indices=None):
+        LOG.info("Starting to reindex.")
+        command = f"java -jar /var/war/gerrit.war reindex -d {self.gerrit_site_path}"
+
+        if indices:
+            command += " ".join([f" --index {i}" for i in indices])
+
+        reindex_process = subprocess.run(
+            command.split(), stdout=subprocess.PIPE, check=True
+        )
+
+        if reindex_process.returncode > 0:
+            LOG.error(
+                "An error occurred, when reindexing Gerrit indices. Exit code: %d",
+                reindex_process.returncode,
+            )
+            sys.exit(1)
+
+        LOG.info("Finished reindexing.")
+
+    def start(self, is_forced):
+        if is_forced:
+            self.reindex()
+            return
+
+        if not self.configured_indices:
+            LOG.info("gerrit_index.config does not exist. Creating all indices.")
+            self.reindex()
+            return
+
+        not_ready_indices = self._get_not_ready_indices()
+        if not_ready_indices:
+            self.reindex(not_ready_indices)
+
+        if not self.is_online_reindex and self._indexes_need_update():
+            LOG.info("Not all indices are up-to-date.")
+            self.reindex()
+            return
+
+        LOG.info("Skipping reindexing.")
+
+
+class GerritLuceneReindexer(GerritAbstractReindexer):
+    def _get_indices(self):
+        file_list = os.listdir(os.path.join(self.gerrit_site_path, "index"))
+        file_list.remove("gerrit_index.config")
+        lucene_indices = {}
+        for index in file_list:
+            try:
+                (name, version) = index.split("_")
+                if name in lucene_indices:
+                    lucene_indices[name] = max(version, lucene_indices[name])
+                else:
+                    lucene_indices[name] = version
+            except ValueError:
+                LOG.debug("Ignoring invalid file in index-directory: %s", index)
+        return lucene_indices
+
+
+class GerritElasticSearchReindexer(GerritAbstractReindexer):
+    def _get_elasticsearch_config(self):
+        es_config = {}
+        gerrit_config = git.GitConfigParser(
+            os.path.join(self.gerrit_site_path, "etc", "gerrit.config")
+        )
+        es_config["prefix"] = gerrit_config.get(
+            "elasticsearch.prefix", default=""
+        ).lower()
+        es_config["server"] = gerrit_config.get(
+            "elasticsearch.server", default=""
+        ).lower()
+        return es_config
+
+    def _get_indices(self):
+        es_config = self._get_elasticsearch_config()
+        url = f"{es_config['server']}/{es_config['prefix']}*"
+        try:
+            response = requests.get(url)
+        except requests.exceptions.SSLError:
+            response = requests.get(url, verify=self.init_config.ca_cert_path)
+
+        es_indices = {}
+        for index, _ in response.json().items():
+            try:
+                index = index.replace(es_config["prefix"], "", 1)
+                (name, version) = index.split("_")
+                es_indices[name] = version
+            except ValueError:
+                LOG.debug("Found unknown index: %s", index)
+
+        return es_indices
+
+
+def get_reindexer(gerrit_site_path, config):
+    gerrit_config = git.GitConfigParser(
+        os.path.join(gerrit_site_path, "etc", "gerrit.config")
+    )
+    index_type = gerrit_config.get("index.type", default=IndexType.LUCENE.name)
+
+    if IndexType[index_type.upper()] is IndexType.LUCENE:
+        return GerritLuceneReindexer(gerrit_site_path, config)
+
+    if IndexType[index_type.upper()] is IndexType.ELASTICSEARCH:
+        return GerritElasticSearchReindexer(gerrit_site_path, config)
+
+    raise RuntimeError(f"Unknown index type {index_type}.")
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/validate_notedb.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/validate_notedb.py
new file mode 100644
index 0000000..aff9ce6
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/initializer/tasks/validate_notedb.py
@@ -0,0 +1,74 @@
+#!/usr/bin/python3
+# Copyright (C) 2018 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import subprocess
+import time
+
+from ..helpers import log
+
+LOG = log.get_logger("init")
+
+
+class NoteDbValidator:
+    def __init__(self, site):
+        self.site = site
+
+        self.notedb_repos = ["All-Projects.git", "All-Users.git"]
+        self.required_refs = {
+            "All-Projects.git": ["refs/meta/config", "refs/meta/version"],
+            "All-Users.git": ["refs/meta/config"],
+        }
+
+    def _test_repo_exists(self, repo):
+        return os.path.exists(os.path.join(self.site, "git", repo))
+
+    def _test_ref_exists(self, repo, ref):
+        command = f"git --git-dir {self.site}/git/{repo} rev-parse --verify {ref}"
+        git_show_ref = subprocess.run(
+            command.split(),
+            stdout=subprocess.PIPE,
+            universal_newlines=True,
+            check=False,
+        )
+
+        return git_show_ref.returncode == 0
+
+    def wait_until_valid(self):
+        for repo in self.notedb_repos:
+            LOG.info("Waiting for repository %s.", repo)
+            while not self._test_repo_exists(repo):
+                time.sleep(1)
+            LOG.info("Found %s.", repo)
+
+            for ref in self.required_refs[repo]:
+                LOG.info("Waiting for ref %s in repository %s.", ref, repo)
+                while not self._test_ref_exists(repo, ref):
+                    time.sleep(1)
+                LOG.info("Found ref %s in repo %s.", ref, repo)
+
+    def check(self):
+        for repo in self.notedb_repos:
+            if not self._test_repo_exists(repo):
+                LOG.info("Repository %s is missing.", repo)
+                return False
+            LOG.info("Found %s.", repo)
+
+            for ref in self.required_refs[repo]:
+                if not self._test_ref_exists(repo, ref):
+                    LOG.info("Ref %s in repository %s is missing.", ref, repo)
+                    return False
+                LOG.info("Found ref %s in repo %s.", ref, repo)
+        return True
diff --git a/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/main.py b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/main.py
new file mode 100755
index 0000000..b41cf3a
--- /dev/null
+++ b/charts/k8s-gerrit/container-images/gerrit-init/tools/gerrit-initializer/main.py
@@ -0,0 +1,93 @@
+#!/usr/bin/python3
+
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import argparse
+
+from initializer.tasks import download_plugins, init, reindex, validate_notedb
+from initializer.config.init_config import InitConfig
+
+
+def _run_download_plugins(args):
+    config = InitConfig().parse(args.config)
+    download_plugins.get_installer(args.site, config).execute()
+
+
+def _run_init(args):
+    config = InitConfig().parse(args.config)
+    init.GerritInit(args.site, config).execute()
+
+
+def _run_reindex(args):
+    config = InitConfig().parse(args.config)
+    reindex.get_reindexer(args.site, config).start(args.force)
+
+
+def _run_validate_notedb(args):
+    validate_notedb.NoteDbValidator(args.site).wait_until_valid()
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "-s",
+        "--site",
+        help="Path to Gerrit site",
+        dest="site",
+        action="store",
+        default="/var/gerrit",
+        required=True,
+    )
+    parser.add_argument(
+        "-c",
+        "--config",
+        help="Path to configuration file for init process.",
+        dest="config",
+        action="store",
+        required=True,
+    )
+
+    subparsers = parser.add_subparsers()
+
+    parser_download_plugins = subparsers.add_parser(
+        "download-plugins", help="Download plugins"
+    )
+    parser_download_plugins.set_defaults(func=_run_download_plugins)
+
+    parser_init = subparsers.add_parser("init", help="Initialize Gerrit site")
+    parser_init.set_defaults(func=_run_init)
+
+    parser_reindex = subparsers.add_parser("reindex", help="Reindex Gerrit indexes")
+    parser_reindex.add_argument(
+        "-f",
+        "--force",
+        help="Reindex even if indices are ready.",
+        dest="force",
+        action="store_true",
+    )
+    parser_reindex.set_defaults(func=_run_reindex)
+
+    parser_validate_notedb = subparsers.add_parser(
+        "validate-notedb", help="Validate NoteDB"
+    )
+    parser_validate_notedb.set_defaults(func=_run_validate_notedb)
+
+    args = parser.parse_args()
+    args.func(args)
+
+
+if __name__ == "__main__":
+    main()