OpenShift helm的安裝

1.安裝過程

下載addons的代碼

$ git clone https://github.com/jorgemoralespou/minishift-addons
$ cd minishift-addons

因為helm的tiller要求訪問gcr的地址，必然被牆，因此把地址替換成ericnie2017/tiller:latest 后建立

ericdeMacBook-Pro:helm ericnie$ cat helm.addon
# Name: helm
# Description: Installs helm

# Pull the image
echo "pull start"
docker pull lachlanevenson/k8s-helm:v2.8.1

echo "deploy start"
# Deploy helm
docker run --rm -v /home/docker:/root:z -v /var/lib/minishift/openshift.local.config:/var/lib/minishift/openshift.local.config:z --net=host --env KUBECONFIG=/var/lib/minishift/openshift.local.config/master/admin.kubeconfig --env HELM_HOST=localhost:8443 lachlanevenson/k8s-helm:v2.8.1 init --upgrade -i ericnie2017/tiller:latest  --skip-refresh

echo "deploy finish"

# Create serviceaccounts and add the permissions to it. Then make the deployment use it
oc create serviceaccount helm -n kube-system
oc patch deployment/tiller-deploy -p '{"spec":{"template":{"spec":{"serviceAccountName":"helm"}}}}' -n kube-system
oc adm policy add-cluster-role-to-user cluster-admin -z helm -n kube-system

# Expose helm as nodePort
oc expose deployment/tiller-deploy --target-port=tiller --type=NodePort --name=tiller -n kube-system

 

 

ericdeMacBook-Pro:add-ons ericnie$ minishift addons install helm
Addon 'helm' installed
ericdeMacBook-Pro:add-ons ericnie$ minishift addons apply helm
-- Applying addon 'helm':
"pull start".
"deploy start".
"deploy finish"....
Add into your ~/.bashrc this lines:

  eval "$(minishift oc-env)"
  export HELM_HOST="$(minishift ip):$(oc get svc/tiller -o jsonpath='{.spec.ports[0].nodePort}' -n kube-system --as=system:admin)"
  export MINISHIFT_ADMIN_CONTEXT="default/$(oc config view -o jsonpath='{.contexts[?(@.name=="minishift")].context.cluster}')/system:admin"

Initialize the helm client, if not done already

e.g.
  helm init -c

Search for an application:

e.g.
  helm search

And now deploy an application

e.g.
  helm version

To delete helm tiller
  oc delete sa/helm deployment/tiller-deploy svc/tiller -n kube-system --as=system:admin

以admin:admin登錄后看到tiller部署成功

 

2.客戶端安裝

設置環境變量

ericdeMacBook-Pro:~ ericnie$ export HELM_HOST="$(minishift ip):$(oc get svc/tiller -o jsonpath='{.spec.ports[0].nodePort}' -n kube-system --as=system:admin)"
ericdeMacBook-Pro:~ ericnie$   export MINISHIFT_ADMIN_CONTEXT="default/$(oc config view -o jsonpath='{.contexts[?(@.name=="minishift")].context.cluster}')/system:admin"
ericdeMacBook-Pro:~ ericnie$ echo $HELM_HOST
192.168.99.100:30417
ericdeMacBook-Pro:~ ericnie$ echo $MINISHIFT_ADMIN_CONTEXT
default/192-168-99-100:8443/system:admin

下載helm客戶端

去到網址,找到對應版本下載 

https://github.com/helm/helm/releases?after=v2.8.0

注意需要翻牆 :(

https://storage.googleapis.com/kubernetes-helm/helm-v2.8.1-darwin-amd64.tar.gz

下載然后解壓，加入.bash_profile

ericdeMacBook-Pro:~ ericnie$ cat .bash_profile
export CLICOLOR=1
#export PATH=/Users/ericnie/minishift/minishift-1.24.0-darwin-amd64:/Users/ericnie/minishift:$PATH
#export PATH="/Users/ericnie/.minishift/cache/oc/v3.10.0/darwin:$PATH"

export PATH=/Users/ericnie/bin:$PATH
export PATH="/Users/ericnie/.minishift/cache/oc/v3.9.31/darwin:/Users/ericnie/minishift/helm/darwin-amd64:$PATH"

export MINISHIFT_USERNAME=[e-mail]
export MINISHIFT_PASSWORD=Welcome1$

 

ericdeMacBook-Pro:~ ericnie$ helm version
Client: &version.Version{SemVer:"v2.8.1", GitCommit:"6af75a8fd72e2aa18a2b278cfe5c7a1c5feca7f2", GitTreeState:"clean"}
Server: &version.Version{SemVer:"v2.8.1", GitCommit:"6af75a8fd72e2aa18a2b278cfe5c7a1c5feca7f2", GitTreeState:"clean"}

能連上server,會顯示server的版本

 

3.驗證

helm create hello-svc

然后把deployment.yaml, service.yaml和values.yaml修改掉

ericdeMacBook-Pro:hello-svc ericnie$ cat templates/deployment.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: {{.Values.deployment_name}}
spec:
  replicas: {{.Values.replicas}}
  template:
    metadata:
      labels:
        tomcat-app: {{.Values.deployment_name}}
        version: "1"
    spec:
      containers:
      - name: {{.Values.deployment_name}}
        image: 172.30.1.1:5000/s2i-tomcat/openshift-tomcat:{{.Values.imageversion}}
        ports:
        - containerPort: {{.Values.port}}
          name: tomcatport

 

ericdeMacBook-Pro:hello-svc ericnie$ cat templates/service.yaml
apiVersion: v1
kind: Service
metadata:
  name: {{.Values.service_name}}
  labels:
    tomcat-app: hellotomcat
spec:
  ports:
  - port: {{.Values.port}}
    protocol: TCP
    targetPort: 8080
    name: http
  type: NodePort
  selector:
    tomcat-app: hellotomcat

 

ericdeMacBook-Pro:hello-svc ericnie$ cat values.yaml
replicas: 1
deployment_name: hellotomcat
service_name: hellotomcat
port: 8080
imageversion: latest

然后安裝

ericdeMacBook-Pro:hello-svc ericnie$ helm install ./ --namespace s2i-tomcat
NAME:   austere-mastiff
LAST DEPLOYED: Sat Oct 13 11:12:06 2018
NAMESPACE: s2i-tomcat
STATUS: DEPLOYED

RESOURCES:
==> v1/Service
NAME         TYPE      CLUSTER-IP      EXTERNAL-IP  PORT(S)         AGE
hellotomcat  NodePort  172.30.214.212  <none>       8080:30982/TCP  1s

==> v1beta1/Deployment
NAME         DESIRED  CURRENT  UP-TO-DATE  AVAILABLE  AGE
hellotomcat  1        0        0           0          0s

 

 

4.遇到的問題

minishift ip無法出來

ricdeMacBook-Pro:helm ericnie$ minishift ip
Error getting IP: ssh command error:
command : ip addr show
err     : exit status 255
output  :

 之前遇到過幾次，每次狀況不一樣，這次重新啟動以后就可以了。