Question
Adding kubernetes cluster to our private gitlab server
- Posted on October 17, 2018
- KubernetesAPIInitial Server SetupUbuntu 18.04
Asked by David Widman
Hello, we have a private gitlab server and I am trying to connect a DO kubernetes cluster to our CI/CD. On the setup page, I have the following fields:
Kubernetes cluster name API URL CA Certificate Token Project namespace (optional, unique)
From the config file generated from the DO kubernetes page, I have the cluster name and CA Certificate. What is the API URL and Token that I must use here?
Thanks, David
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I figured out how add a DigitalOcean Cluster to GitLab. The steps I took (set up your kubectl to use your DigitalOcean Cluster first):
create a new namespace
kubectl create namespace gitlabkubesandboxswitch to that new namespacekubectl config set-context $(kubectl config current-context) --namespace=gitlabkubesandboxcreate a service accountkubectl create -f - <<EOF apiVersion: v1 kind: ServiceAccount metadata: name: gitlab EOFmake the new service account cluster adminkubectl create clusterrolebinding gitlab-cluster-admin-binding --clusterrole=cluster-admin --serviceaccount=gitlabkubesandbox:gitlabdescribe the new service accountkubectl describe serviceAccounts gitlabget the secretkubectl describe secret [secret name found in the response form above]copy the token start the dashboardkubectl proxyopen the dashboard in your browser http://localhost:8001/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/ switch to the namespace “gitlabkubesandbox” go to secrets => the secret from aboveValues for GitLab: Kubernetes cluster name: whatever API URL: cluster server from the kubeconfig.yml CA Certificate: ca.crt from the Dashboard Token: token from the Dashboard Project namespace: gitlabkubesandbox Check RBAC-enabled when adding the Cluster to GitLab.
Done!
For installing Helm, described rights was not enough for me. I have to do this:
If you are getting a Kubernetes Error 401 it means your Token is incorrect as it was in my case. Here I was using a token from an API tab in the Dashboard BUT should really create the Token by command line like recommended. After generating a user and a token using kubectl commands and changing the Token the installation of Helm worked perfectly. Hope it helps!