jenkins X实践系列（3） —— jenkins X 安装拾遗

JadePeng

发布于 2019-05-25 17:34:54

8140

发布于 2019-05-25 17:34:54

文章被收录于专栏：JadePeng的技术博客JadePeng的技术博客

jx是云原生CICD，devops的一个最佳实践之一，目前在快速的发展成熟中。最近调研了JX，这里为第3篇，介绍下如何安装jenkins x。

前置条件

安装K8S
安装ceph集群（jx需要storage class创建pv）
申请一个域名（可选），可以修改hosts实现
helm
git私服

安装ceph集群

这里的服务器为centos 7。

使用官方的ceph-deploy安装即可，先安装ceph-deploy，然后每台机器安装运行环境

 pip install ceph-deploy
 export CEPH_DEPLOY_REPO_URL=http://mirrors.ustc.edu.cn/ceph/rpm-jewel/el7
 export CEPH_DEPLOY_GPG_URL=http://mirrors.ustc.edu.cn/ceph/keys/release.asc
 ceph-deploy install docker86-156 docker86-155 docker86-154

然后安装集群

ceph-deploy new docker86-156 docker86-155 docker86-154

修改配置文件

cat <<EOF >>ceph.conf
#osd_journal_size = 10000
public network = 192.168.86.0/24
osd_pool_default_size = 2
osd_pool_default_min_size = 1
osd_crush_chooseleaf_type = 1
osd_crush_update_on_start = true
max_open_files = 131072
osd pool default pg num = 128
osd pool default pgp num = 128
mon_pg_warn_max_per_osd = 0
mon clock drift allowed = 2
mon clock drift warn backoff = 30
mon_pg_warn_max_per_osd = 300
EOF

分发配置文件：

  ceph-deploy --overwrite-conf config push docker86-155 docker86-154 docker86-156

安装服务

ceph-deploy mon create-initial
ceph-deploy admin docker86-156 docker86-155 docker86-154

安装osd

ceph-deploy disk zap  docker86-156:sdb docker86-155:sdb docker86-154:sdb
ceph-deploy osd prepare docker86-156:sdb docker86-155:sdb docker86-154:sdb
ceph-deploy osd activate docker86-156:sdb1 docker86-154:sdb1

添加pool

ceph osd pool create k8smeta 128
ceph osd pool create k8sdata 128
ceph fs new k8s k8smeta k8sdata
ceph osd pool ls detail

K8S使用ceph

生成 Ceph secret

grep key /etc/ceph/ceph.client.admin.keyring |awk '{printf "%s", $NF}'|base64

假如得到: $SECRET==

在k8s创建Secret

cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: Secret
metadata:
  name: ceph-secret
  namespace: default
type: "kubernetes.io/rbd"  
data:
  key: $SECRET==
EOF

创建StorageClass

cat <<EOF | kubectl apply -f -
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
   name: ceph-web
provisioner: kubernetes.io/rbd
parameters:
  monitors: 192.168.86.156,192.168.86.155,192.168.86.154
  adminId: admin
  adminSecretName: ceph-secret
  adminSecretNamespace: default
  pool: rbd
  userId: admin
  userSecretName: ceph-secret
EOF

可以将ceph设为默认的storage class：

kubectl patch storageclass ceph-web -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'

安装git私服gitea(可选）

如果已经有git的，或者直接使用GitHub的跳过。

创建PV：

cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: PersistentVolume
metadata:
  name: cephfs-github-pv
  namespace: gitea
  labels:
    name: cephfs-github-pv
spec:
  capacity:
    storage: 200Gi
  accessModes:
    - ReadWriteMany
  cephfs:
    monitors: 
    - 192.168.86.156:6789
    path: /github
    user: admin
    secretRef:
      name: ceph-secret
    readOnly: false
  persistentVolumeReclaimPolicy: Retain
EOF

PVC

cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: cephfs-github-pvc
  namespace: gitea
spec:
  accessModes:
    - ReadWriteMany
  storageClassName: ""
  resources:
    requests:
      storage: 200Gi
  selector:
    matchLabels:
      name: cephfs-github-pv
EOF

gitea部署：

cat <<EOF | kubectl apply -f -
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: giteamysql
  namespace: gitea
spec:
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: giteamysql
    spec:
      containers:
      - image: gitea/gitea:latest
        imagePullPolicy: IfNotPresent
        name: gitea
        resources: {}
        volumeMounts:
        - name: ceph
          mountPath: /data 
      volumes:
        - name: ceph
          persistentVolumeClaim:
            claimName: cephfs-github-pvc
EOF

创建服务：

cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: Service
metadata:
  name: giteamysql-service
  namespace: gitea
  labels:
    app: charts
spec:
  ports:
    - port: 80
      targetPort: 3000 
  selector:
    app: giteamysql
  type: NodePort
EOF

创建ingress

cat <<EOF | kubectl apply -f -
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  annotations:
    nginx.ingress.kubernetes.io/proxy-body-size: "0"
    nginx.ingress.kubernetes.io/proxy-read-timeout: "600"
    nginx.ingress.kubernetes.io/proxy-send-timeout: "600"
    kubernetes.io/tls-acme: 'true'
  name: giteamysql-ingress
  namespace: gitea
spec:
  rules:
  - host: github.youdomain.com
    http:
      paths:
      - backend:
          serviceName: giteamysql-service
          servicePort: 80
        path: /
EOF

一切正常的话，打开github.youdomain.com，按提示进行安装，设置管理员密码即可。

安装好后创建一个token， $git_access_token

域名与tls

将域名的通配符，a记录到k8s集群。

申请TLS证书，使用certbot

 $ yum -y install yum-utils
$ yum-config-manager --enable rhui-REGION-rhel-server-extras rhui-REGION-rhel-server-optional
 $ sudo yum install certbot

然后申请

  certbot certonly --manual -d *.domain.com --email youmail@domain.com

这个会要求创建一个A记录，按提示创建即可。

一些OK的话，服务器/etc/letsencrypt/live/domain.com/ 会生成tls证书。

$ ll /etc/letsencrypt/live/iflyresearch.com/
total 4
lrwxrwxrwx. 1 root root  40 Oct 17 15:11 cert.pem -> ../../archive/iflyresearch.com/cert1.pem
drwxr-xr-x  2 root root  78 Nov 14 09:33 certs
lrwxrwxrwx. 1 root root  41 Oct 17 15:11 chain.pem -> ../../archive/iflyresearch.com/chain1.pem
lrwxrwxrwx. 1 root root  45 Oct 17 15:11 fullchain.pem -> ../../archive/iflyresearch.com/fullchain1.pem
lrwxrwxrwx. 1 root root  43 Oct 17 15:11 privkey.pem -> ../../archive/iflyresearch.com/privkey1.pem

要在k8s使用，需要创建secret：

kubectl create secret tls research-tls-secret --cert=cert.pem --key=./privkey.pem -n=kube-system

安装helm

jx依赖helm，需要先安装，可以参见本系列第一篇

安装jenkins X

先创建一个namespace：incubation

写入 ceph-secret：

cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: Secret
metadata:
  name: ceph-secret
  namespace: incubation
type: "kubernetes.io/rbd"  
data:
  key: $SECRET==
EOF

下载jx执行文件：

  wget https://github.com/jenkins-x/jx/releases/download/v1.3.380/jx-linux-amd64.tar.gz 
  tar xzv jx-linux-amd64.tar.gz  -C ~/.jx/bin
  export PATH=$PATH:~/.jx/bin
  echo 'export PATH=$PATH:~/.jx/bin' >> ~/.bashrc

然后执行安装命令：

jx install --external-ip=192.168.86.214 --namespace='incubation'  --git-provider-url='http://github.iflyresearch.com' --git-username='jqpeng' --git-api-token=' $git_access_token' --domain='iflyresearch.com'  --provider=kubernetes