diff --git a/core/dns-challenge-solver/Dockerfile b/core/dns-challenge-solver/Dockerfile
new file mode 100644
index 0000000..d1b6f9b
--- /dev/null
+++ b/core/dns-challenge-solver/Dockerfile
@@ -0,0 +1,6 @@
+FROM gcr.io/distroless/static:nonroot
+
+ARG TARGETARCH
+
+COPY dns-challenge-solver_${TARGETARCH} /dns-challenge-solver
+CMD ["/dns-challenge-solver"]
diff --git a/core/dns-challenge-solver/Makefile b/core/dns-challenge-solver/Makefile
new file mode 100644
index 0000000..545735b
--- /dev/null
+++ b/core/dns-challenge-solver/Makefile
@@ -0,0 +1,33 @@
+clean:
+	rm -f dns-challenge-solver*
+
+# TODO(gio): fix go path
+build:
+	/usr/local/go/bin/go build -o dns-challenge-solver *.go
+
+build_arm64: export CGO_ENABLED=0
+build_arm64: export GO111MODULE=on
+build_arm64: export GOOS=linux
+build_arm64: export GOARCH=arm64
+build_arm64:
+	/usr/local/go/bin/go build -o dns-challenge-solver_arm64 *.go
+
+build_amd64: export CGO_ENABLED=0
+build_amd64: export GO111MODULE=on
+build_amd64: export GOOS=linux
+build_amd64: export GOARCH=amd64
+build_amd64:
+	/usr/local/go/bin/go build -o dns-challenge-solver_amd64 *.go
+
+push_arm64: clean build_arm64
+	podman build --platform linux/arm64 --tag=giolekva/dns-challenge-solver:arm64 .
+	podman push giolekva/dns-challenge-solver:arm64
+
+push_amd64: clean build_amd64
+	podman build --platform linux/amd64 --tag=giolekva/dns-challenge-solver:amd64 .
+	podman push giolekva/dns-challenge-solver:amd64
+
+push: push_arm64 push_amd64
+	podman manifest create giolekva/dns-challenge-solver:latest giolekva/dns-challenge-solver:arm64 giolekva/dns-challenge-solver:amd64
+	podman manifest push giolekva/dns-challenge-solver:latest docker://docker.io/giolekva/dns-challenge-solver:latest
+	podman manifest rm giolekva/dns-challenge-solver:latest
diff --git a/core/dns-challenge-solver/go.mod b/core/dns-challenge-solver/go.mod
new file mode 100644
index 0000000..dea6f00
--- /dev/null
+++ b/core/dns-challenge-solver/go.mod
@@ -0,0 +1,106 @@
+module github.com/giolekva/pcloud/core/dns-challenge-solver
+
+go 1.18
+
+require (
+	github.com/cert-manager/cert-manager v1.13.2
+	k8s.io/apiextensions-apiserver v0.28.4
+	k8s.io/client-go v0.28.4
+)
+
+require (
+	github.com/NYTimes/gziphandler v1.1.1 // indirect
+	github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.0.0-20230305170008-8188dc5388df // indirect
+	github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/blang/semver/v4 v4.0.0 // indirect
+	github.com/cenkalti/backoff/v4 v4.2.1 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/coreos/go-semver v0.3.1 // indirect
+	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
+	github.com/evanphx/json-patch v5.6.0+incompatible // indirect
+	github.com/felixge/httpsnoop v1.0.3 // indirect
+	github.com/fsnotify/fsnotify v1.6.0 // indirect
+	github.com/go-logr/logr v1.2.4 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-logr/zapr v1.2.4 // indirect
+	github.com/go-openapi/jsonpointer v0.19.6 // indirect
+	github.com/go-openapi/jsonreference v0.20.2 // indirect
+	github.com/go-openapi/swag v0.22.3 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/google/cel-go v0.16.1 // indirect
+	github.com/google/gnostic-models v0.6.8 // indirect
+	github.com/google/go-cmp v0.5.9 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/google/uuid v1.3.1 // indirect
+	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0 // indirect
+	github.com/imdario/mergo v0.3.12 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_golang v1.16.0 // indirect
+	github.com/prometheus/client_model v0.4.0 // indirect
+	github.com/prometheus/common v0.44.0 // indirect
+	github.com/prometheus/procfs v0.10.1 // indirect
+	github.com/spf13/cobra v1.7.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/stoewer/go-strcase v1.2.0 // indirect
+	go.etcd.io/etcd/api/v3 v3.5.9 // indirect
+	go.etcd.io/etcd/client/pkg/v3 v3.5.9 // indirect
+	go.etcd.io/etcd/client/v3 v3.5.9 // indirect
+	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.45.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.44.0 // indirect
+	go.opentelemetry.io/otel v1.19.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.19.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.19.0 // indirect
+	go.opentelemetry.io/otel/metric v1.19.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.19.0 // indirect
+	go.opentelemetry.io/otel/trace v1.19.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.0.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.25.0 // indirect
+	golang.org/x/crypto v0.14.0 // indirect
+	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
+	golang.org/x/net v0.17.0 // indirect
+	golang.org/x/oauth2 v0.12.0 // indirect
+	golang.org/x/sync v0.3.0 // indirect
+	golang.org/x/sys v0.13.0 // indirect
+	golang.org/x/term v0.13.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
+	golang.org/x/time v0.3.0 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/genproto v0.0.0-20230803162519-f966b187b2e5 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20230803162519-f966b187b2e5 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230911183012-2d3300fd4832 // indirect
+	google.golang.org/grpc v1.58.3 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/api v0.28.4 // indirect
+	k8s.io/apimachinery v0.28.4 // indirect
+	k8s.io/apiserver v0.28.4 // indirect
+	k8s.io/component-base v0.28.4 // indirect
+	k8s.io/klog/v2 v2.100.1 // indirect
+	k8s.io/kms v0.28.4 // indirect
+	k8s.io/kube-aggregator v0.28.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20230905202853-d090da108d2f // indirect
+	k8s.io/utils v0.0.0-20230726121419-3b25d923346b // indirect
+	sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.1.2 // indirect
+	sigs.k8s.io/gateway-api v0.8.0 // indirect
+	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.3.0 // indirect
+	sigs.k8s.io/yaml v1.3.0 // indirect
+)
diff --git a/core/dns-challenge-solver/go.sum b/core/dns-challenge-solver/go.sum
new file mode 100644
index 0000000..954ddec
--- /dev/null
+++ b/core/dns-challenge-solver/go.sum
@@ -0,0 +1,318 @@
+cloud.google.com/go v0.110.6 h1:8uYAkj3YHTP/1iwReuHPxLSbdcyc+dSBbzFMrVwDR6Q=
+cloud.google.com/go/compute v1.23.0 h1:tP41Zoavr8ptEqaW6j+LQOnyBBhO7OkOMAGrgLopTwY=
+cloud.google.com/go/compute/metadata v0.2.3 h1:mg4jlk7mCAj6xXp9UJ4fjI9VUI5rubuGBW5aJ7UnBMY=
+github.com/NYTimes/gziphandler v1.1.1 h1:ZUDjpQae29j0ryrS0u/B8HZfJBtBQHjqw2rQ2cqUQ3I=
+github.com/NYTimes/gziphandler v1.1.1/go.mod h1:n/CVRwUEOgIxrgPvAQhUUr9oeUtvrhMomdKFjzJNB0c=
+github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.0.0-20230305170008-8188dc5388df h1:7RFfzj4SSt6nnvCPbCqijJi1nWCd+TqAT3bYCStRC18=
+github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.0.0-20230305170008-8188dc5388df/go.mod h1:pSwJ0fSY5KhvocuWSx4fz3BA8OrA1bQn+K1Eli3BRwM=
+github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a h1:idn718Q4B6AGu/h5Sxe66HYVdqdGu2l9Iebqhi/AEoA=
+github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
+github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
+github.com/benbjohnson/clock v1.3.0 h1:ip6w0uFQkncKQ979AypyG0ER7mqUSBdKLOgAle/AT8A=
+github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
+github.com/blang/semver/v4 v4.0.0 h1:1PFHFE6yCCTv8C1TeyNNarDzntLi7wMI5i/pzqYIsAM=
+github.com/blang/semver/v4 v4.0.0/go.mod h1:IbckMUScFkM3pff0VJDNKRiT6TG/YpiHIM2yvyW5YoQ=
+github.com/cenkalti/backoff/v4 v4.2.1 h1:y4OZtCnogmCPw98Zjyt5a6+QwPLGkiQsYW5oUqylYbM=
+github.com/cenkalti/backoff/v4 v4.2.1/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
+github.com/cert-manager/cert-manager v1.13.2 h1:LG8+OLvxtc49CSyfjW7zHSyvlt7JVaHgRGyhfdvPpkk=
+github.com/cert-manager/cert-manager v1.13.2/go.mod h1:AdfSU8muS+bj3C46YaD1VrlpXh672z5MeW/k1k5Sl1w=
+github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
+github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cncf/xds/go v0.0.0-20230607035331-e9ce68804cb4 h1:/inchEIKaYC1Akx+H+gqO04wryn5h75LSazbRlnya1k=
+github.com/coreos/go-semver v0.3.1 h1:yi21YpKnrx1gt5R+la8n5WgS0kCrsPp33dmEyHReZr4=
+github.com/coreos/go-semver v0.3.1/go.mod h1:irMmmIw/7yzSRPWryHsK7EYSg09caPQL03VsM8rvUec=
+github.com/coreos/go-systemd/v22 v22.5.0 h1:RrqgGjYQKalulkV8NGVIfkXQf6YYmOyiJKk8iXXhfZs=
+github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
+github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/emicklei/go-restful/v3 v3.11.0 h1:rAQeMHw1c7zTmncogyy8VvRZwtkmkZ4FxERmMY4rD+g=
+github.com/emicklei/go-restful/v3 v3.11.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
+github.com/envoyproxy/protoc-gen-validate v1.0.2 h1:QkIBuU5k+x7/QXPvPPnWXWlCdaBFApVqftFV6k087DA=
+github.com/evanphx/json-patch v5.6.0+incompatible h1:jBYDEEiFBPxA0v50tFdvOzQQTCvpL6mnFh5mB2/l16U=
+github.com/evanphx/json-patch v5.6.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
+github.com/felixge/httpsnoop v1.0.3 h1:s/nj+GCswXYzN5v2DpNMuMQYe+0DDwt5WVCU6CWBdXk=
+github.com/felixge/httpsnoop v1.0.3/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
+github.com/fsnotify/fsnotify v1.6.0 h1:n+5WquG0fcWoWp6xPWfHdbskMCQaFnG6PfBrh1Ky4HY=
+github.com/fsnotify/fsnotify v1.6.0/go.mod h1:sl3t1tCWJFWoRz9R8WJCbQihKKwmorjAbSClcnxKAGw=
+github.com/go-logr/logr v1.2.0/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ=
+github.com/go-logr/logr v1.2.4/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
+github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
+github.com/go-logr/zapr v1.2.4 h1:QHVo+6stLbfJmYGkQ7uGHUCu5hnAFAj6mDe6Ea0SeOo=
+github.com/go-logr/zapr v1.2.4/go.mod h1:FyHWQIzQORZ0QVE1BtVHv3cKtNLuXsbNLtpuhNapBOA=
+github.com/go-openapi/jsonpointer v0.19.6 h1:eCs3fxoIi3Wh6vtgmLTOjdhSpiqphQ+DaPn38N2ZdrE=
+github.com/go-openapi/jsonpointer v0.19.6/go.mod h1:osyAmYz/mB/C3I+WsTTSgw1ONzaLJoLCyoi6/zppojs=
+github.com/go-openapi/jsonreference v0.20.2 h1:3sVjiK66+uXK/6oQ8xgcRKcFgQ5KXa2KvnJRumpMGbE=
+github.com/go-openapi/jsonreference v0.20.2/go.mod h1:Bl1zwGIM8/wsvqjsOQLJ/SH+En5Ap4rVB5KVcIDZG2k=
+github.com/go-openapi/swag v0.22.3 h1:yMBqmnQ0gyZvEb/+KzuWZOXgllrXT4SADYbvDaXHv/g=
+github.com/go-openapi/swag v0.22.3/go.mod h1:UzaqsxGiab7freDnrUUra0MwWfN/q7tE4j+VcZ0yl14=
+github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 h1:tfuBGBXKqDEevZMzYi5KSi8KkcZtzBcTgAUUtapy0OI=
+github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
+github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
+github.com/golang-jwt/jwt/v4 v4.5.0 h1:7cYmW1XlMY7h7ii7UhUyChSgS5wUJEnm9uZVTGqOWzg=
+github.com/golang/glog v1.1.0 h1:/d3pCKDPWNnvIWe0vVUpNP32qc8U3PDVxySP/y360qE=
+github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE=
+github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
+github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
+github.com/google/btree v1.0.1 h1:gK4Kx5IaGY9CD5sPJ36FHiBJ6ZXl0kilRiiCj+jdYp4=
+github.com/google/cel-go v0.16.1 h1:3hZfSNiAU3KOiNtxuFXVp5WFy4hf/Ly3Sa4/7F8SXNo=
+github.com/google/cel-go v0.16.1/go.mod h1:HXZKzB0LXqer5lHHgfWAnlYwJaQBDKMjxjulNQzhwhY=
+github.com/google/gnostic-models v0.6.8 h1:yo/ABAfM5IMRsS1VnXjTBvUb61tFIHozhlYvRgGre9I=
+github.com/google/gnostic-models v0.6.8/go.mod h1:5n7qKqH0f5wFt+aWF8CW6pZLLNOfYuF5OpfBSENuI8U=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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diff --git a/core/dns-challenge-solver/main.go b/core/dns-challenge-solver/main.go
new file mode 100644
index 0000000..a08b6ef
--- /dev/null
+++ b/core/dns-challenge-solver/main.go
@@ -0,0 +1,193 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+
+	extapi "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/rest"
+
+	"github.com/cert-manager/cert-manager/pkg/acme/webhook/apis/acme/v1alpha1"
+	"github.com/cert-manager/cert-manager/pkg/acme/webhook/cmd"
+)
+
+const groupName = "dodo.cloud"
+
+func main() {
+	if groupName == "" {
+		panic("GROUP_NAME must be specified")
+	}
+	cmd.RunWebhookServer(groupName,
+		&pcloudDNSProviderSolver{},
+	)
+}
+
+type ZoneManager interface {
+	CreateTextRecord(domain, entry, txt string) error
+	DeleteTextRecord(domain, entry, txt string) error
+}
+
+type zoneControllerManager struct {
+	CreateAddr string
+	DeleteAddr string
+}
+
+type createTextRecordReq struct {
+	Domain string `json:"domain,omitempty"`
+	Entry  string `json:"entry,omitempty"`
+	Text   string `json:"text,omitempty"`
+}
+
+const contentTypeApplicationJSON = "application/json"
+
+func (m *zoneControllerManager) CreateTextRecord(domain, entry, txt string) error {
+	req := createTextRecordReq{domain, entry, txt}
+	var buf bytes.Buffer
+	if err := json.NewEncoder(&buf).Encode(req); err != nil {
+		return err
+	}
+	if resp, err := http.Post(m.CreateAddr, contentTypeApplicationJSON, &buf); err != nil {
+		return err
+	} else if resp.StatusCode != http.StatusOK {
+		var b strings.Builder
+		io.Copy(&b, resp.Body)
+		return fmt.Errorf("Create text record failed: %d %s", resp.StatusCode, b.String())
+	}
+	return nil
+}
+
+func (m *zoneControllerManager) DeleteTextRecord(domain, entry, txt string) error {
+	req := createTextRecordReq{domain, entry, txt}
+	var buf bytes.Buffer
+	if err := json.NewEncoder(&buf).Encode(req); err != nil {
+		return err
+	}
+	if resp, err := http.Post(m.DeleteAddr, contentTypeApplicationJSON, &buf); err != nil {
+		return err
+	} else if resp.StatusCode != http.StatusOK {
+		var b strings.Builder
+		io.Copy(&b, resp.Body)
+		return fmt.Errorf("Delete text record failed: %d %s", resp.StatusCode, b.String())
+	}
+	return nil
+}
+
+type pcloudDNSProviderSolver struct {
+	// If a Kubernetes 'clientset' is needed, you must:
+	// 1. uncomment the additional `client` field in this structure below
+	// 2. uncomment the "k8s.io/client-go/kubernetes" import at the top of the file
+	// 3. uncomment the relevant code in the Initialize method below
+	// 4. ensure your webhook's service account has the required RBAC role
+	//    assigned to it for interacting with the Kubernetes APIs you need.
+	client *kubernetes.Clientset
+}
+
+// customDNSProviderConfig is a structure that is used to decode into when
+// solving a DNS01 challenge.
+// This information is provided by cert-manager, and may be a reference to
+// additional configuration that's needed to solve the challenge for this
+// particular certificate or issuer.
+// This typically includes references to Secret resources containing DNS
+// provider credentials, in cases where a 'multi-tenant' DNS solver is being
+// created.
+// If you do *not* require per-issuer or per-certificate configuration to be
+// provided to your webhook, you can skip decoding altogether in favour of
+// using CLI flags or similar to provide configuration.
+// You should not include sensitive information here. If credentials need to
+// be used by your provider here, you should reference a Kubernetes Secret
+// resource and fetch these credentials using a Kubernetes clientset.
+type pcloudDNSProviderConfig struct {
+	CreateAddress string `json:"createAddress,omitempty"`
+	DeleteAddress string `json:"deleteAddress,omitempty"`
+}
+
+// Name is used as the name for this DNS solver when referencing it on the ACME
+// Issuer resource.
+// This should be unique **within the group name**, i.e. you can have two
+// solvers configured with the same Name() **so long as they do not co-exist
+// within a single webhook deployment**.
+// For example, `cloudflare` may be used as the name of a solver.
+func (c *pcloudDNSProviderSolver) Name() string {
+	return "pcloud-dns-solver"
+}
+
+// Present is responsible for actually presenting the DNS record with the
+// DNS provider.
+// This method should tolerate being called multiple times with the same value.
+// cert-manager itself will later perform a self check to ensure that the
+// solver has correctly configured the DNS provider.
+func (c *pcloudDNSProviderSolver) Present(ch *v1alpha1.ChallengeRequest) error {
+	fmt.Printf("Received challenge %+v\n", ch)
+	cfg, err := loadConfig(ch.Config)
+	if err != nil {
+		fmt.Printf("")
+		return err
+	}
+	zm := &zoneControllerManager{cfg.CreateAddress, cfg.DeleteAddress}
+	domain, entry := getDomainAndEntry(ch)
+	return zm.CreateTextRecord(domain, entry, ch.Key)
+}
+
+// CleanUp should delete the relevant TXT record from the DNS provider console.
+// If multiple TXT records exist with the same record name (e.g.
+// _acme-challenge.example.com) then **only** the record with the same `key`
+// value provided on the ChallengeRequest should be cleaned up.
+// This is in order to facilitate multiple DNS validations for the same domain
+// concurrently.
+func (c *pcloudDNSProviderSolver) CleanUp(ch *v1alpha1.ChallengeRequest) error {
+	cfg, err := loadConfig(ch.Config)
+	if err != nil {
+		return err
+	}
+	zm := &zoneControllerManager{cfg.CreateAddress, cfg.DeleteAddress}
+	domain, entry := getDomainAndEntry(ch)
+	return zm.DeleteTextRecord(domain, entry, ch.Key)
+}
+
+// Initialize will be called when the webhook first starts.
+// This method can be used to instantiate the webhook, i.e. initialising
+// connections or warming up caches.
+// Typically, the kubeClientConfig parameter is used to build a Kubernetes
+// client that can be used to fetch resources from the Kubernetes API, e.g.
+// Secret resources containing credentials used to authenticate with DNS
+// provider accounts.
+// The stopCh can be used to handle early termination of the webhook, in cases
+// where a SIGTERM or similar signal is sent to the webhook process.
+func (c *pcloudDNSProviderSolver) Initialize(kubeClientConfig *rest.Config, stopCh <-chan struct{}) error {
+	fmt.Println("Initialization start")
+	client, err := kubernetes.NewForConfig(kubeClientConfig)
+	if err != nil {
+		return err
+	}
+	c.client = client
+	fmt.Println("Initialization done")
+	return nil
+}
+
+// loadConfig is a small helper function that decodes JSON configuration into
+// the typed config struct.
+func loadConfig(cfgJSON *extapi.JSON) (pcloudDNSProviderConfig, error) {
+	cfg := pcloudDNSProviderConfig{}
+	// handle the 'base case' where no configuration has been provided
+	if cfgJSON == nil {
+		return cfg, nil
+	}
+	if err := json.Unmarshal(cfgJSON.Raw, &cfg); err != nil {
+		return cfg, fmt.Errorf("error decoding solver config: %v", err)
+	}
+
+	return cfg, nil
+}
+
+func getDomainAndEntry(ch *v1alpha1.ChallengeRequest) (string, string) {
+	// Both ch.ResolvedZone and ch.ResolvedFQDN end with a dot: '.'
+	entry := strings.TrimSuffix(ch.ResolvedFQDN, ch.ResolvedZone)
+	entry = strings.TrimSuffix(entry, ".")
+	domain := strings.TrimSuffix(ch.ResolvedZone, ".")
+	return domain, entry
+}