在kubernetes中搭建harbor，并利用MinIO对象存储保存镜像文件

前言：此文档是用来在线下环境harbor利用MinIO做镜像存储的，至于那些说OSS不香吗？或者单机harbor的，不用看了。此文档对你没啥用，如果是采用单机的harbor连接集群MinIO，请看我的另一篇博文。

环境:

 应用版本：

helm v3.2.3
kubernetes 1.14.3
nginx-ingress 1.39.1
harbor 2.0
nginx 1.15.3
MinIO RELEASE.2020-05-08T02-40-49Z

### 这里就不讲解kubernetes集群怎么搭建了。我们kubernetes共享存储为了简单，采用的是nfs。我们先讲解一下怎么采用nfs做k8s持久存储。
### 注意执行主机，除了nfs-server是在94那台服务器执行了相关命令，其他的大部分是在master1上面执行

## 一、nfs-client-provisioner
### 1、在nfs-server安装nfs服务

yum -y install nfs-utils  rpcbind 
mkdir /nfs/data 
chmod 777 /nfs/data
echo '/nfs/data *(rw,no_root_squash,sync)' > /etc/exports 
exportfs -r
systemctl restart rpcbind && systemctl enable rpcbind
systemctl restart nfs && systemctl enable nfs
rpcinfo -p localhost
showmount -e 10.0.0.94　

### 2、在其他服务器安装nfs-client

yum install -y nfs-utils　　

### 3、在k8s-master1上安装nfs-client-provisioner 实现动态持久存储，nfs-client-provisioner 是一个Kubernetes的简易NFS的外部provisioner，本身不提供NFS

cd /usr/local/src && mkdir nfs-client-provisioner && cd nfs-client-provisioner

### 注意deployment.yaml文件中，IP对应的是nfs-server的，PATH路径对应的是nfs-server的/etc/exports的路径

cat > deployment.yaml << EOF
apiVersion: v1
kind: ServiceAccount
metadata:
name: nfs-client-provisioner
---
kind: Deployment
apiVersion: apps/v1
metadata:
  name: nfs-client-provisioner
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nfs-client-provisioner
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: nfs-client-provisioner
    spec:
      serviceAccount: nfs-client-provisioner
      containers:
      - name: nfs-client-provisioner
        image: quay-mirror.qiniu.com/external_storage/nfs-client-provisioner:latest
        volumeMounts:
        - name: nfs-client-root
          mountPath: /persistentvolumes
        env:
        - name: PROVISIONER_NAME
          value: fuseim.pri/ifs
        - name: NFS_SERVER
          value: 10.0.0.94
        - name: NFS_PATH
          value: /nfs/data
            volumes:
            - name: nfs-client-root
        nfs:
          server: 10.0.0.94
          path: /nfs/data
EOF

cat > rbac.yaml << EOF
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: nfs-client-provisioner-runner
rules:
- apiGroups: [""]
  resources: ["persistentvolumes"]
  verbs: ["get", "list", "watch", "create", "delete"]
- apiGroups: [""]
  resources: ["persistentvolumeclaims"]
  verbs: ["get", "list", "watch", "update"]
- apiGroups: [""]
  resources: ["endpoints"]
  verbs: ["get", "list", "watch", "create", "update", "patch"]
- apiGroups: ["storage.k8s.io"]
  resources: ["storageclasses"]
  verbs: ["get", "list", "watch"]
- apiGroups: [""]
  resources: ["events"]
  verbs: ["create", "update", "patch"]
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: run-nfs-client-provisioner
subjects:
- kind: ServiceAccount
  name: nfs-client-provisioner
  namespace: default
- kind: ServiceAccount
  name: nfs-client-provisioner
  namespace: kube-system
roleRef:
  kind: ClusterRole
  name: nfs-client-provisioner-runner
  apiGroup: rbac.authorization.k8s.io
---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: leader-locking-nfs-client-provisioner
rules:
- apiGroups: [""]
  resources: ["endpoints"]
  verbs: ["get", "list", "watch", "create", "update", "patch"]
---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: leader-locking-nfs-client-provisioner
subjects:
- kind: ServiceAccount
  name: nfs-client-provisioner
  # replace with namespace where provisioner is deployed
  namespace: default
roleRef:
  kind: Role
  name: leader-locking-nfs-client-provisioner
  apiGroup: rbac.authorization.k8s.io
EOF

　

cat > StorageClass.yaml << EOF
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: managed-nfs-storage
provisioner: fuseim.pri/ifs
parameters:
  archiveOnDelete: "false"
EOF

　　

kubectl apply -f deployment.yaml
kubectl apply -f rbac.yaml
kubectl apply -f StorageClass.yaml

### 稍等片刻，检查nfs-client-provisioner是否正常，出现下面的输出说明正常，如果不正常请检查上面的步骤，是否存在问题

kubectl get pods -n kube-system | grep nfs

nfs-client-provisioner-7778496f89-kthnj 1/1 Running 0 169m

## 二、安装helm3

cd /usr/local/src &&
wget https://get.helm.sh/helm-v3.2.3-linux-amd64.tar.gz &&
tar xf helm-v3.2.3-linux-amd64.tar.gz &&
cp linux-amd64/helm /usr/bin/ &&
helm version

## 三、安装nginx-controller-manager

helm repo add stable http://mirror.azure.cn/kubernetes/charts
helm pull stable/nginx-ingress &&
docker pull fungitive/defaultbackend-amd64 &&
docker tag fungitive/defaultbackend-amd64 k8s.gcr.io/defaultbackend-amd64:1.5 &&
helm template guoys nginx-ingress-*.tgz | kubectl apply -f -

## 四、安装MinIO
### 1、在准备的4台服务器安装minio Server，官方建议是准备最低4台服务器，并且是单独的磁盘空间存放minio数据

cd /usr/local/src &&
wget https://dl.min.io/server/minio/release/linux-amd64/minio &&
chmod +x minio && cp minio /usr/bin

cat > /etc/systemd/system/minio.service <<EOF
[Unit]
Description=Minio
Documentation=https://docs.minio.io
Wants=network-online.target
After=network-online.target
AssertFileIsExecutable=/usr/bin/minio

[Service]
EnvironmentFile=-/etc/minio/minio.conf
ExecStart=/usr/bin/minio server $ENDPOINTS

# Let systemd restart this service always
Restart=always
# Specifies the maximum file descriptor number that can be opened by this process
LimitNOFILE=65536
# Disable timeout logic and wait until process is stopped
TimeoutStopSec=infinity
SendSIGKILL=no
[Install]
WantedBy=multi-user.target
EOF

### 此处IP地址要与自己的机器地址对应或者采用域名，后缀是minio存储路径

mkdir -p /etc/minio

cat > /etc/minio/minio.conf <<EOF
MINIO_ACCESS_KEY=guoxy
MINIO_SECRET_KEY=guoxy321export
ENDPOINTS="http://10.0.0.91/minio http://10.0.0.92/minio http://10.0.0.93/minio http://10.0.0.94/minio"
EOF

systemctl daemon-reload && systemctl start minio && systemctl enable minio

### 2、在k8s-master1安装mc命令，并创建bucket harbor

cd /usr/local/src && 
wget https://dl.min.io/client/mc/release/linux-amd64/mc && 
chmod +x mc && cp mc /usr/bin/ && 
mc config host add minio "http://10.0.0.91:9000  http://10.0.0.92:9000 http://10.0.0.93:9000/  http://10.0.0.94:9000" guoxy guoxy321export && 
mc mb minio/harbor

## 五、在k8s中安装harbor

### 1、先在k8s中创建harbor要使用的TLS证书的secret，证书如果没有可以let's encrypt申请

kubectl create secret tls guofire.xyz --key privkey.pem --cert fullchain.pem

### 2、克隆harbor-helm

cd /usr/local/src && 
git clone -b 1.4.0 https://github.com/goharbor/harbor-helm

### 3、修改harbor-helm/values.yaml，由于内容太多了，我只把需要修改的内容贴出来

vim harbor-helm/values.yaml

### secretName对应刚刚创建的secret名称，core为harbor访问域名

      secretName: "guofire.xyz"
      core: harbor.guofire.xyz  
      notary: notary.guofire.xyz
externalURL: https://harbor.guofire.xyz

### 下面是nfs持久化存储

   persistentVolumeClaim:
     registry:           
      storageClass: "managed-nfs-storage"
      subPath: "registry"                
      storageClass: "managed-nfs-storage"
      subPath: "chartmuseum"            
      storageClass: "managed-nfs-storage"
      subPath: "jobservice"              
      storageClass: "managed-nfs-storage"
      subPath: "database"                
      storageClass: "managed-nfs-storage"
      subPath: "redis"                  
      storageClass: "managed-nfs-storage"
      subPath: "trivy"

### 这往下最重要，regionendpoint地址可以写nginx代理的地址和端口，我这里只写了minio Server其中一台

  imageChartStorage:
    disableredirect: true
    type: s3
    filesystem:
      rootdirectory: /storage
      #maxthreads: 100
    s3:
      region: us-west-1
      bucket: harbor
      accesskey: guoys!
      secretkey: guoys321export
      regionendpoint: http://10.0.0.92:9000
      encrypt: false
      secure: false
      v4auth: true
      chunksize: "5242880"
      rootdirectory: /
      redirect:
        disabled: false
    maintenance:
      uploadpurging:
        enabled: false
    delete:
      enabled: true

### 4、通过helm在k8s中安装harbor

helm install harbor harbor-helm/

### 5、最后稍等3、5分钟，查看harbor应用是否正常

kubectl get pods

### 出现下面类似的输出，基本上说明harbor已经正常启动

NAME                               READY   UP-TO-DATE   AVAILABLE   AGE
harbor-harbor-chartmuseum          1/1     1            1           13h
harbor-harbor-clair                1/1     1            1           13h
harbor-harbor-core                 1/1     1            1           13h
harbor-harbor-jobservice           1/1     1            1           13h
harbor-harbor-notary-server        1/1     1            1           13h
harbor-harbor-notary-signer        1/1     1            1           13h
harbor-harbor-portal               1/1     1            1           13h
harbor-harbor-registry             1/1     1            1           13h
zy-nginx-ingress-controller        1/1     1            1           32h
zy-nginx-ingress-default-backend   1/1     1            1           32h

## 六、安装nginx 4层转发，否则无法通过nginx-ingress访问harbor

### 1、由于nginx-ingress默认是LoadBalancer模式，在线下环境无法正常使用。我们需要改为NodePort

kubectl edit svc guoys-nginx-ingress-controller

### 修改.spec.type的值为NodePort，并保存

### 2、查看nginx-ingress-controller的nodeport端口，记住80和443对应的端口

kubectl get svc | grep 'ingress-controller'
guoys-nginx-ingress-controller NodePort 10.200.248.214 <none> 80:32492/TCP,443:30071/TCP 32h

### 3、安装nginx4层代理

yum install -y gcc make 
mkdir /apps 
cd /usr/local/src/
wget http://nginx.org/download/nginx-1.15.3.tar.gz
tar xf nginx-1.15.3.tar.gz
cd nginx-1.15.3
./configure --with-stream --without-http --prefix=/apps/nginx --without-http_uwsgi_module --without-http_scgi_module --without-http_fastcgi_module
make && make install

### 下面upstream中的端口一定要跟上面2步骤NodePort的相对应

cat > /apps/nginx/conf/nginx.conf <<EOF
worker_processes 1;

events {
worker_connections 1024;
}

stream {
log_format tcp '$remote_addr [$time_local] '
'$protocol $status $bytes_sent $bytes_received '
'$session_time "$upstream_addr" '
'"$upstream_bytes_sent" "$upstream_bytes_received" "$upstream_connect_time"';

upstream https_default_backend {
server 10.0.0.91:30071;
server 10.0.0.92:30071;
server 10.0.0.93:30071;
}

upstream http_backend {
server 10.0.0.91:32492;
server 10.0.0.92:32492;
server 10.0.0.93:32492;
}

server {
listen 443;
proxy_pass https_default_backend;
access_log logs/access.log tcp;
error_log logs/error.log;
}

server {
listen 80;
proxy_pass http_backend;
}

}
EOF

### 测试并启动nginx

/apps/nginx/sbin/nginx -t
/apps/nginx/sbin/nginx
echo '/apps/nginx/sbin/nginx' >> /etc/rc.local 

## 七、最后进行测试，推送镜像到harbor。成功后查看minio的harbor bucket是否存在docker目录。如果存在说明成

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