i am working on integrating jenkins on Google Kubernetes. Want a pipeline for my project which will perform following steps:
I am familiar with above commands individually but i am new to this type of pipeline where i can run them but everytime jenkins try to teach me that you are in a container, not on kubernetes lol
I have a google cloud shell and i cannot directly install on that machine. So i have to somehow find a way to integrate jenkins to pass those commands directly to GKE environment.
i just want a proper step by step guide for anyone not familiar with how to achieve following points:
- Have GKE
- Have jenkins pod on it
- Know all commands to execute (docker, gcloud, kubectl, helm etc)
- Just need an integration between jenkins and GKE to utilize all above
Kindly bear me if i am unable to explain that much. Ask anything else you need to resolve this. Thank
If your Jenkins pod is running inside GKE, just go for accessing the api from a pod and wrap your last step into small python/go script.
If you prefer to use kubectl you could: set up correct rbac, for example (this one allow to list pods and servies):
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: list
rules:
- apiGroups: [""]
resources: ["services", "pods"]
verbs: ["get", "list"]
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: list
subjects:
- kind: ServiceAccount
name: default
namespace: default
roleRef:
kind: ClusterRole
name: svc-list
apiGroup: rbac.authorization.k8s.ioand then
kubectl run --restart=Never --rm -it ubuntu --image ubuntu:18.04{
apt-get update
apt-get install -y apt-transport-https curl gnupg
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
cat <<EOF | tee /etc/apt/sources.list.d/kubernetes.list
deb https://apt.kubernetes.io/ kubernetes-xenial main
EOF
apt-get update
apt-get install -y kubectl
}
kubectl get po,svc
NAME READY STATUS RESTARTS AGE
pod/ubuntu 1/1 Running 0 16m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 122d