Kubernetes-5：搭建企业级私有仓库Harbor

搭建企业级私有仓库Harbor

安装需求

python版本 >= 2.7

Docker引擎版本 >= 1.10

docker-compose版本 >= 1.6.0

安装环境

一、Python安装

yum -y install python3

二、Docker上章节中已经安装，不再赘述

三、docker-compose安装

curl -L https://github.com/docker/compose/releases/download/1.18.0/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose

四、Harbor安装

## 因为docker 默认不允许http 方式推送镜像，所以要修改docker配置文件,添加以下行，每个k8s节点都要做
vim /etc/docker/daemon.json
...
{
　　"insecure-registries": ["https://hub.vfancloud.com"]
}
...

## 每个节点的hosts文件也必须添加此解析，包括你将要访问的windows主机
vim /etc/hosts
...
192.168.152.252 hub.vfancloud.com
...

## 下载harbor，curl和wget都太慢，直接迅雷下的，然后上传到服务器
curl -L https://github.com/goharbor/harbor/releases/download/v1.10.2/harbor-offline-installer-v1.10.2.tgz -o /usr/local/harbor-offline-installer-v1.10.2.tgz

## 解压，编辑配置文件
tar xvf harbor-offline-installer-v1.10.2.tgz
cd harbor/
vim harbor.yml
...
hostname: hub.vfancloud.com  #域名
http:  #协议及端口，若开启了https，则将http自动转发至https
  port: 

https:
  port:
  # The path of cert and key files for nginx
  certificate: /data/cert/server.crt  #证书位置
  private_key: /data/cert/server.key  #私钥位置

database: #数据库密码，可以修改
  password: root123

harbor_admin_password: Harbor12345  #harbor的admin密码
...

—————————————— 生成局域网证书 —————————————————
[root@kubenode2 ~]# mkdir -p /data/cert
[root@kubenode2 ~]# cd /data/cert/
# 生成私钥
[root@kubenode2 cert]# openssl genrsa -des3 -out server.key
Generating RSA private key,  bit long modulus ( primes)
.....................................+++++
...........................+++++
e is  (0x010001)
Enter pass phrase for server.key: 填写密码
Verifying - Enter pass phrase for server.key: 确认密码

# 创建csr证书请求
[root@kubenode2 cert]# openssl req -new -key server.key -out server.csr
Enter pass phrase for server.key:
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name ( letter code) [XX]:CN
State or Province Name (full name) []:BJ
Locality Name (eg, city) [Default City]:BJ
Organization Name (eg, company) [Default Company Ltd]:vfancloud
Organizational Unit Name (eg, section) []:vfancloud
Common Name (eg, your name or your server's hostname) []:hub.vfancloud.com
Email Address []:vfan8991@.com
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []:

# 去除私钥的连接密码，harbor是以Nginx当前端，若不去掉密码，则会请求https失败
[root@kubenode2 cert]# cp server.key server.key.org
[root@kubenode2 cert]# openssl rsa -in server.key.org -out server.key
Enter pass phrase for server.key.org:  输入私钥密码
writing RSA key  去除成功

# 证书签名
[root@kubenode2 cert]# openssl x509 -req -days  -in server.csr -signkey server.key -out server.crt
Signature ok
subject=C = CN, ST = BJ, L = BJ, O = vfancloud, OU = vfancloud, CN = hub.vfancloud.com, emailAddress = vfan8991@.com
Getting Private key 签名成功

# 赋予执行权限
[root@kubenode2 cert]# chmod +x ./*
————————————————— 证书生成完毕 —————————————————

[root@kubenode2 harbor]# ./install.sh
 ----Harbor has been installed and started successfully.----

[root@kubenode2 harbor]# docker ps
CONTAINER ID        IMAGE                                 COMMAND                  CREATED             STATUS                             PORTS                                         NAMES
1dcd38feb29d        goharbor/nginx-photon:v1.10.2         "nginx -g 'daemon of…"   34 seconds ago      Up 32 seconds (healthy)            0.0.0.0:80->8080/tcp, 0.0.0.0:443->8443/tcp   nginx
063509e49573        goharbor/harbor-jobservice:v1.10.2    "/harbor/harbor_jobs…"   34 seconds ago      Up 32 seconds (healthy)                                                          harbor-jobservice
1c37e61f9479        goharbor/harbor-core:v1.10.2          "/harbor/harbor_core"    35 seconds ago      Up 28 seconds (health: starting)                                                 harbor-core
cf7e7bd46982        goharbor/registry-photon:v1.10.2      "/home/harbor/entryp…"   39 seconds ago      Up 35 seconds (healthy)            5000/tcp                                      registry
977f5ca9214a        goharbor/redis-photon:v1.10.2         "redis-server /etc/r…"   39 seconds ago      Up 35 seconds (healthy)            6379/tcp                                      redis
86fdcb7b988b        goharbor/harbor-registryctl:v1.10.2   "/home/harbor/start.…"   39 seconds ago      Up 35 seconds (healthy)                                                          registryctl
8fc55f981c54        goharbor/harbor-db:v1.10.2            "/docker-entrypoint.…"   39 seconds ago      Up 35 seconds (healthy)            5432/tcp                                      harbor-db
10057d8629a0        goharbor/harbor-portal:v1.10.2        "nginx -g 'daemon of…"   39 seconds ago      Up 35 seconds (healthy)            8080/tcp                                      harbor-portal
8485731461d8        goharbor/harbor-log:v1.10.2           "/bin/sh -c /usr/loc…"   40 seconds ago      Up 38 seconds (healthy)            127.0.0.1:1514->10514/tcp                     harbor-log

测试访问Harbor

1、浏览器输入：https://hub.vfancloud.com/

2、登录，账号为admin，密码为harbor.yml中的 harbor_admin_password 的值

3、可以自己创建一些用户，或者上传一些镜像等

新建Pod测试

## 首先docker login登录仓库

[root@Centos8 rbac]# docker login hub.vfancloud.com
  Username: admin
  Password:

## 启动一个deployment
[root@Centos8 ~]# kubectl run nginx-deployment --image=hub.vfancloud.com/test/myapp:v1 --port= --replicas=
kubectl run --generator=deployment/apps.v1 is DEPRECATED and will be removed in a future version. Use kubectl run --generator=run-pod/v1 or kubectl create instead.
deployment.apps/nginx-deployment created

## 查看deployment
[root@Centos8 ~]# kubectl get deployment
NAME               READY   UP-TO-DATE   AVAILABLE   AGE
nginx-deployment   /                            8s

## 新建一个deployment会自动创建一个rs
[root@Centos8 ~]# kubectl get rs
NAME                          DESIRED   CURRENT   READY   AGE
nginx-deployment-5bc446d899                            74s

## 再来查看pod
[root@Centos8 ~]# kubectl get pod -o wide
NAME                                READY   STATUS    RESTARTS   AGE   IP           NODE          NOMINATED NODE   READINESS GATES
nginx-deployment-5bc446d899-ndd57   /     Running             81s   10.244.3.6   testcentos7   <none>           <none>

## 测试访问
[root@Centos8 ~]# curl 10.244.3.6
Hello MyApp | Version: v1 | <a href="hostname.html">Pod Name</a>
[root@Centos8 ~]# curl 10.244.3.6/hostname.html
nginx-deployment-5bc446d899-ndd57

## 添加副本数
[root@Centos8 ~]# kubectl scale --replicas= deployment/nginx-deployment
deployment.extensions/nginx-deployment scaled
[root@Centos8 ~]# kubectl get pod -o wide
NAME                                READY   STATUS              RESTARTS   AGE     IP           NODE          NOMINATED NODE   READINESS GATES
nginx-deployment-5bc446d899-jsgvf   /     Running                       37s     10.244.3.7   testcentos7   <none>           <none>
nginx-deployment-5bc446d899-lbsfp   /     ContainerCreating             7m32s   <none>       kubenode2     <none>           <none>
nginx-deployment-5bc446d899-v2lrx   /     ContainerCreating             37s     <none>       kubenode2     <none>           <none>

## 创建svc，实现自动的负载均衡
[root@Centos8 ~]# kubectl expose deployment nginx-deployment --port= --target-port=
service/nginx-deployment exposed

[root@Centos8 ~]# kubectl get svc
NAME               TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)     AGE
kubernetes         ClusterIP   10.96.0.1      <none>        /TCP     4d17h
nginx-deployment   ClusterIP   10.96.14.172   <none>        /TCP   7s

[root@Centos8 ~]# curl 10.96.14.172:/hostname.html
nginx-deployment-78d674b868-mqkqf
[root@Centos8 ~]# curl 10.96.14.172:/hostname.html
nginx-deployment-78d674b868-8jdhl
[root@Centos8 ~]# curl 10.96.14.172:/hostname.html
nginx-deployment-78d674b868-jcd42

## 可以使用ipvsadm -Ln来查看当前负载的ip地址
[root@Centos8 ~]# ipvsadm -Ln
TCP  10.96.14.172: rr
  -> 10.244.3.12:               Masq
  -> 10.244.3.13:               Masq
  -> 10.244.3.14:               Masq                     

测试外网访问

##修改svc TYPE，实现可以外网访问
[root@Centos8 ~]# kubectl edit svc nginx-deployment
service/nginx-deployment edited

[root@Centos8 ~]# grep type /tmp/kubectl-edit-1h3zf.yaml
type: NodePort   #修改此行

## 查看TYPE 已经修改为nodeport
[root@Centos8 ~]# kubectl get svc
NAME               TYPE        CLUSTER-IP    EXTERNAL-IP   PORT(S)           AGE
kubernetes         ClusterIP   10.96.0.1     <none>        /TCP           3d17h
nginx-deployment   NodePort    10.97.134.6   <none>        :/TCP   16m

## 修改完毕后，进入外网进行测试访问，还是访问不到，后来得知为iptables规则问题
## 将 FORWARD 链放行即可
[root@Centos8 ~]# iptables -P FORWARD ACCEPT

## 测试访问
[root@Centos8 ~]# curl 192.168.152.53:
Hello MyApp | Version: v1 | <a href="hostname.html">Pod Name</a>