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https://github.com/marcel-dempers/docker-development-youtube-series.git
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updates to sealed secrets
This commit is contained in:
marcel-dempers
parent
655764b074
commit
84890e84c3
@ -4,7 +4,7 @@ Checkout the [Sealed Secrets GitHub Repo](https://github.com/bitnami-labs/sealed
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## Create a kubernetes cluster
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In this guide we we''ll need a Kubernetes cluster for testing. Let's create one using [kind](https://kind.sigs.k8s.io/) </br>
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In this guide we we'll need a Kubernetes cluster for testing. Let's create one using [kind](https://kind.sigs.k8s.io/) </br>
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```
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kind create cluster --name sealedsecrets --image kindest/node:v1.23.5
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@ -34,6 +34,15 @@ chmod +x ./kubectl
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mv ./kubectl /usr/local/bin/kubectl
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```
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### install helm
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```
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curl -o /tmp/helm.tar.gz -LO https://get.helm.sh/helm-v3.10.1-linux-amd64.tar.gz
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tar -C /tmp/ -zxvf /tmp/helm.tar.gz
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mv /tmp/linux-amd64/helm /usr/local/bin/helm
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chmod +x /usr/local/bin/helm
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```
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### test cluster access:
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```
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/work # kubectl get nodes
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@ -53,40 +62,52 @@ curl -L -o ./kubernetes/secrets/sealed-secrets/controller-v0.19.1.yaml https://g
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```
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### alternative install Helm
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### install using Helm
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TODO: cover helm https://github.com/bitnami-labs/sealed-secrets#helm-chart
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You can also install the controller using `helm`
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### install the controller
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```
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helm repo add sealed-secrets https://bitnami-labs.github.io/sealed-secrets
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helm search repo sealed-secrets --versions
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helm template sealed-secrets --version 2.7.0 -n kube-system sealed-secrets/sealed-secrets \
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> ./kubernetes/secrets/sealed-secrets/controller-helm-v0.19.1.yaml
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```
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With `helm template` we can explore the YAML and then replace the `helm template` with `helm install`
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to install the chart
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### install using YAML manifest
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```
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kubectl apply -f kubernetes/secrets/sealed-secrets/controller-v0.19.1.yaml
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```
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### Check the install
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### Check the installation
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The controller deploys to the `kube-system` namespace by default.
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```
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kubectl -n kube-system get pods
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```
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TODO: check the logs with `kubectl -n kube-system logs` command
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Check the logs of the sealed secret controller
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TODO: important logs
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```
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kubectl -n kube-system logs -l name=sealed-secrets-controller --tail -1
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```
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From the logs we can see that it writes the encryption key its going to use as a kubernetes secret </br>
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Example log:
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```
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2022/11/05 21:38:20 New key written to kube-system/sealed-secrets-keymwzn9
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2022/11/05 21:38:20 Certificate is
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-----BEGIN CERTIFICATE-----
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< cert content >
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-----END CERTIFICATE-----
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2022/11/05 21:38:20 HTTP server serving on :808
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```
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TODO: check our secret
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## Encryption keys
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```
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kubectl get secret -n kube-system sealed-secrets-keymwzn9 -o yaml
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kubectl -n kube-system get secrets
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kubectl -n kube-system get secret sealed-secrets-keygxlvg -o yaml
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```
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## Download KubeSeal
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@ -97,16 +118,11 @@ we'll want to download kubeseal from the assets section
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curl -L -o /tmp/kubeseal.tar.gz \
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https://github.com/bitnami-labs/sealed-secrets/releases/download/v0.19.1/kubeseal-0.19.1-linux-amd64.tar.gz
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apk add tar
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tar -xzf /tmp/kubeseal.tar.gz -C /tmp/
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chmod +x /tmp/kubeseal
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mv /tmp/kubeseal /usr/local/bin/
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```
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### run kubeseal
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We can now run `kubeseal --help`
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## Sealing a basic Kubernetes Secret
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@ -117,13 +133,18 @@ Looks at our existing Kubernetes secret YAML
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cat kubernetes/secrets/secret.yaml
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```
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Create a sealed secret using `stdin`
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If you run `kubeseal` you will see it pause and expect input from `stdin`. </br>
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You can paste your secret YAML and press CTRL+D to terminate `stdin`. </br>
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You will notive it writes a `sealedSecret` to `stdout`. </br>
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We can then automate this using `|` characters. </br>
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Create a sealed secret using `stdin` :
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```
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cat kubernetes/secrets/secret.yaml | kubeseal -o yaml > kubernetes/secrets/sealed-secrets/sealed-secret.yaml
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```
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Create a sealed secret using file
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Create a sealed secret using a YAML file:
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```
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kubeseal -f kubernetes/secrets/secret.yaml -o yaml > kubernetes/secrets/sealed-secrets/sealed-secret.yaml
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278
kubernetes/secrets/sealed-secrets/controller-helm-v0.19.1.yaml
Normal file
278
kubernetes/secrets/sealed-secrets/controller-helm-v0.19.1.yaml
Normal file
@ -0,0 +1,278 @@
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---
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# Source: sealed-secrets/templates/service-account.yaml
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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name: sealed-secrets
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namespace: kube-system
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labels:
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app.kubernetes.io/name: sealed-secrets
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helm.sh/chart: sealed-secrets-2.7.0
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app.kubernetes.io/instance: sealed-secrets
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app.kubernetes.io/managed-by: Helm
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app.kubernetes.io/version: v0.19.1
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---
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# Source: sealed-secrets/templates/cluster-role.yaml
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRole
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metadata:
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name: secrets-unsealer
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labels:
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app.kubernetes.io/name: sealed-secrets
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helm.sh/chart: sealed-secrets-2.7.0
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app.kubernetes.io/instance: sealed-secrets
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app.kubernetes.io/managed-by: Helm
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app.kubernetes.io/version: v0.19.1
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rules:
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- apiGroups:
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- bitnami.com
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resources:
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- sealedsecrets
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verbs:
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- get
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- list
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- watch
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- apiGroups:
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- bitnami.com
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resources:
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- sealedsecrets/status
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verbs:
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- update
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- apiGroups:
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- ""
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resources:
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- secrets
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verbs:
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- get
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- list
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- create
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- update
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- delete
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- watch
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- apiGroups:
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- ""
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resources:
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- events
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verbs:
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- create
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- patch
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---
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# Source: sealed-secrets/templates/cluster-role-binding.yaml
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRoleBinding
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metadata:
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name: sealed-secrets
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labels:
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app.kubernetes.io/name: sealed-secrets
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helm.sh/chart: sealed-secrets-2.7.0
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app.kubernetes.io/instance: sealed-secrets
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app.kubernetes.io/managed-by: Helm
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app.kubernetes.io/version: v0.19.1
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: ClusterRole
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name: secrets-unsealer
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subjects:
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- apiGroup: ""
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kind: ServiceAccount
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name: sealed-secrets
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namespace: kube-system
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---
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# Source: sealed-secrets/templates/role.yaml
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apiVersion: rbac.authorization.k8s.io/v1
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kind: Role
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metadata:
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name: sealed-secrets-key-admin
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namespace: kube-system
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labels:
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app.kubernetes.io/name: sealed-secrets
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helm.sh/chart: sealed-secrets-2.7.0
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app.kubernetes.io/instance: sealed-secrets
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app.kubernetes.io/managed-by: Helm
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app.kubernetes.io/version: v0.19.1
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rules:
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- apiGroups:
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- ""
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resourceNames:
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- sealed-secrets-key
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resources:
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- secrets
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verbs:
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- get
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- apiGroups:
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- ""
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resources:
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- secrets
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verbs:
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- create
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- list
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---
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# Source: sealed-secrets/templates/role.yaml
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apiVersion: rbac.authorization.k8s.io/v1
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kind: Role
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metadata:
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name: sealed-secrets-service-proxier
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namespace: kube-system
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labels:
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app.kubernetes.io/name: sealed-secrets
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helm.sh/chart: sealed-secrets-2.7.0
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app.kubernetes.io/instance: sealed-secrets
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app.kubernetes.io/managed-by: Helm
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app.kubernetes.io/version: v0.19.1
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rules:
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- apiGroups:
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- ""
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resourceNames:
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- sealed-secrets
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resources:
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- services
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verbs:
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- get
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- apiGroups:
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- ""
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resourceNames:
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- 'http:sealed-secrets:'
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- 'http:sealed-secrets:http'
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- sealed-secrets
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resources:
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- services/proxy
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verbs:
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- create
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- get
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---
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# Source: sealed-secrets/templates/role-binding.yaml
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apiVersion: rbac.authorization.k8s.io/v1
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kind: RoleBinding
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metadata:
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name: sealed-secrets-key-admin
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namespace: kube-system
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labels:
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app.kubernetes.io/name: sealed-secrets
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helm.sh/chart: sealed-secrets-2.7.0
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app.kubernetes.io/instance: sealed-secrets
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app.kubernetes.io/managed-by: Helm
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app.kubernetes.io/version: v0.19.1
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: Role
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name: sealed-secrets-key-admin
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subjects:
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- apiGroup: ""
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kind: ServiceAccount
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name: sealed-secrets
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namespace: kube-system
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---
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# Source: sealed-secrets/templates/role-binding.yaml
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apiVersion: rbac.authorization.k8s.io/v1
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kind: RoleBinding
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metadata:
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name: sealed-secrets-service-proxier
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namespace: kube-system
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labels:
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app.kubernetes.io/name: sealed-secrets
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helm.sh/chart: sealed-secrets-2.7.0
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app.kubernetes.io/instance: sealed-secrets
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app.kubernetes.io/managed-by: Helm
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app.kubernetes.io/version: v0.19.1
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: Role
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name: sealed-secrets-service-proxier
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subjects:
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- apiGroup: rbac.authorization.k8s.io
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kind: Group
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name: system:authenticated
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---
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# Source: sealed-secrets/templates/service.yaml
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apiVersion: v1
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kind: Service
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metadata:
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name: sealed-secrets
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namespace: kube-system
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labels:
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app.kubernetes.io/name: sealed-secrets
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helm.sh/chart: sealed-secrets-2.7.0
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app.kubernetes.io/instance: sealed-secrets
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app.kubernetes.io/managed-by: Helm
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app.kubernetes.io/version: v0.19.1
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spec:
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type: ClusterIP
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ports:
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- name: http
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port: 8080
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targetPort: http
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nodePort: null
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selector:
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app.kubernetes.io/name: sealed-secrets
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app.kubernetes.io/instance: sealed-secrets
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---
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# Source: sealed-secrets/templates/deployment.yaml
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: sealed-secrets
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namespace: kube-system
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labels:
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app.kubernetes.io/name: sealed-secrets
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helm.sh/chart: sealed-secrets-2.7.0
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app.kubernetes.io/instance: sealed-secrets
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app.kubernetes.io/managed-by: Helm
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app.kubernetes.io/version: v0.19.1
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spec:
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selector:
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matchLabels:
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app.kubernetes.io/name: sealed-secrets
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app.kubernetes.io/instance: sealed-secrets
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template:
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metadata:
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labels:
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app.kubernetes.io/name: sealed-secrets
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app.kubernetes.io/instance: sealed-secrets
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spec:
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securityContext:
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fsGroup: 65534
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serviceAccountName: sealed-secrets
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containers:
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- name: controller
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command:
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- controller
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args:
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- --update-status
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- --key-prefix
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- "sealed-secrets-key"
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image: docker.io/bitnami/sealed-secrets-controller:v0.19.1
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imagePullPolicy: IfNotPresent
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ports:
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- containerPort: 8080
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name: http
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livenessProbe:
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failureThreshold: 3
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initialDelaySeconds: 0
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periodSeconds: 10
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successThreshold: 1
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timeoutSeconds: 1
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httpGet:
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path: /healthz
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port: http
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readinessProbe:
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failureThreshold: 3
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initialDelaySeconds: 0
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periodSeconds: 10
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successThreshold: 1
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timeoutSeconds: 1
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httpGet:
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path: /healthz
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port: http
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resources:
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limits: {}
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requests: {}
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securityContext:
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readOnlyRootFilesystem: true
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runAsNonRoot: true
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runAsUser: 1001
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volumeMounts:
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- mountPath: /tmp
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name: tmp
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volumes:
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- name: tmp
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emptyDir: {}
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