K8s之创建Harbor私有镜像仓库（六）
注意此篇文章接上篇：K8s之Pod资源管理（五）
https://blog.csdn.net/JarryZho/article/details/104335059
搭建Harbor私有仓库
此时再开启一台新的虚拟机：CentOS 7-2 192.168.18.134（可以将网卡设置为静态IP）
`部署docker引擎`
[root@harbor ~]# yum install yum-utils device-mapper-persistent-data lvm2 -y
[root@harbor ~]# yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
[root@harbor ~]# yum install -y docker-ce
[root@harbor ~]# systemctl stop firewalld.service
[root@harbor ~]# setenforce 0
[root@harbor ~]# systemctl start docker.service
[root@harbor ~]# systemctl enable docker.service
`检查相关进程开启情况`
[root@harbor ~]# ps aux | grep docker
root 4913 0.8 3.6 565612 68884 ? Ssl 12:23 0:00 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
root 5095 0.0 0.0 112676 984 pts/1 R+ 12:23 0:00 grep --color=auto docker
`镜像加速服务`
[root@harbor ~]# tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://w1ogxqvl.mirror.aliyuncs.com"]
}
EOF
[root@harbor ~]# systemctl daemon-reload
[root@harbor ~]# systemctl restart docker
`网络优化部分`
[root@harbor ~]# echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf
[root@harbor ~]# service network restart
Restarting network (via systemctl): [ 确定 ]
[root@harbor ~]# systemctl restart docker
----------
[root@harbor ~]# mkdir /aaa
[root@harbor ~]# mount.cifs //192.168.0.105/rpm /aaa
Password for root@//192.168.0.105/rpm:
[root@harbor ~]# cd /aaa/docker/
[root@harbor docker]# cp docker-compose /usr/local/bin/
[root@harbor docker]# cd /usr/local/bin/
[root@harbor bin]# ls
docker-compose
[root@harbor bin]# docker-compose -v
docker-compose version 1.21.1, build 5a3f1a3
[root@harbor bin]# cd /aaa/docker/
[root@harbor docker]# tar zxvf harbor-offline-installer-v1.2.2.tgz -C /usr/local/
[root@harbor docker]# cd /usr/local/harbor/
[root@harbor harbor]# ls
common docker-compose.yml harbor.v1.2.2.tar.gz NOTICE
docker-compose.clair.yml harbor_1_1_0_template install.sh prepare
docker-compose.notary.yml harbor.cfg LICENSE upgrade
`配置Harbor参数文件`
[root@harbor harbor]# vim harbor.cfg
5 hostname = 192.168.18.134 #5行改为自己本机的IP地址
59 harbor_admin_password = Harbor12345 #此行为默认账号和密码不要忘记，登陆时要用
#修改完成后按Esc退出插入模式，输入:wq保存退出
[root@harbor harbor]# ./install.sh
......此处省略多行
Creating harbor-log ... done
Creating harbor-adminserver ... done
Creating harbor-db ... done
Creating registry ... done
Creating harbor-ui ... done
Creating nginx ... done
Creating harbor-jobservice ... done
✔ ----Harbor has been installed and started successfully.----
Now you should be able to visit the admin portal at http://192.168.18.134.
For more details, please visit https://github.com/vmware/harbor .
第一步：登录Harbor私有仓库
在宿主机浏览器地址栏中输入：192.168.18.134，输入默认的账户admin，密码Harbor12345，就可以点击登录
第二步：新建项目并设为私有
在项目界面点击"+项目"添加新项目，输入项目名称，点击创建，然后点击新项目左侧的三个小点，将项目设为私有
两个node节点配置连接私有仓库（注意后面的逗号要添加）
`node2节点`
[root@node2 ~]# vim /etc/docker/daemon.json
{
"registry-mirrors": ["https://w1ogxqvl.mirror.aliyuncs.com"], #末尾要有,
"insecure-registries":["192.168.18.134"] #添加这行
}
[root@node2 ~]# systemctl restart docker
`node2节点`
[root@node1 ~]# vim /etc/docker/daemon.json
{
"registry-mirrors": ["https://w1ogxqvl.mirror.aliyuncs.com"], #末尾要有,
"insecure-registries":["192.168.18.134"] #添加这行
}
[root@node1 ~]# systemctl restart docker
第三步：节点上登录harbor私有仓库
`node2节点：`
[root@node2 ~]# docker login 192.168.18.134
Username: admin #输入账户admin
Password: #输入密码：Harbor12345
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Login Succeeded #此时成功登录
`下载tomcat镜像并打标签推送：``
[root@node2 ~]# docker pull tomcat
......此处省略多行
Status: Downloaded newer image for tomcat:latest
docker.io/library/tomcat:latest
[root@node2 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
tomcat latest aeea3708743f 3 days ago 529MB
[root@node2 ~]# docker tag tomcat 192.168.18.134/project/tomcat #打标签的过程
[root@node2 ~]# docker push 192.168.18.134/project/tomcat #上传镜像
此时在harbor私仓界面就能看到推送上去的tomcat镜像
问题：如果我们想使用另一个节点node1去拉取私仓中的tomcar镜像就会出现error报错，提示被拒绝（也就是需要登陆）
[root@node1 ~]# docker pull 192.168.18.134/project/tomcat
Using default tag: latest
Error response from daemon: pull access denied for 192.168.18.134/project/tomcat, repository does not exist or may require 'docker login': denied: requested access to the resource is denied #提示出错，缺少仓库的凭据
`node1节点下载tomcat镜像`
[root@node1 ~]# docker pull tomcat:8.0.52
[root@node1 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
tomcat 8.0.52 b4b762737ed4 19 months ago 356MB
第四步：master1上操作
[root@master1 demo]# vim tomcat01.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: my-tomcat
spec:
replicas: 2
template:
metadata:
labels:
app: my-tomcat
spec:
containers:
- name: my-tomcat
image: docker.io/tomcat:8.0.52
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: my-tomcat
spec:
type: NodePort
ports:
- port: 8080
targetPort: 8080
selector:
app: my-tomcat
`创建`
[root@master1 demo]# kubectl create -f tomcat01.yaml
deployment.extensions/my-tomcat created
service/my-tomcat created
`查看资源`
[root@master1 demo]# kubectl get pods,deploy,svc
NAME READY STATUS RESTARTS AGE
pod/my-nginx-d55b94fd-kc2gl 1/1 Running 1 2d
pod/my-nginx-d55b94fd-tkr42 1/1 Running 1 2d
`pod/my-tomcat-57667b9d9-8bkns` 1/1 Running 0 84s
`pod/my-tomcat-57667b9d9-kcddv` 1/1 Running 0 84s
pod/mypod 1/1 Running 1 8h
pod/nginx-6c94d899fd-8pf48 1/1 Running 1 3d
pod/nginx-deployment-5477945587-f5dsm 1/1 Running 1 2d23h
pod/nginx-deployment-5477945587-hmgd2 1/1 Running 1 2d23h
pod/nginx-deployment-5477945587-pl2hn 1/1 Running 1 2d23h
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
deployment.extensions/my-nginx 2 2 2 2 2d
`deployment.extensions/my-tomcat` 2 2 2 2 84s
deployment.extensions/nginx 1 1 1 1 8d
deployment.extensions/nginx-deployment 3 3 3 3 2d23h
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.0.0.1 <none> 443/TCP 10d
service/my-nginx-service NodePort 10.0.0.210 <none> 80:40377/TCP 2d
`service/my-tomcat NodePort 10.0.0.86 <none> 8080:41860/TCP 84s`
service/nginx-service NodePort 10.0.0.242 <none> 80:40422/TCP 3d10h
#内部端口8080，对外端口41860
[root@master1 demo]# kubectl get ep
NAME ENDPOINTS AGE
kubernetes 192.168.18.128:6443,192.168.18.132:6443 10d
my-nginx-service 172.17.32.4:80,172.17.40.3:80 2d
`my-tomcat 172.17.32.6:8080,172.17.40.6:8080 5m29s`
nginx-service 172.17.40.5:80 3d10h
#此时my-tomcat被分配到了后面两个节点上去
验证：在宿主机浏览器中输入192.168.18.148:41860和192.168.18.145:41860这两个节点地址加对外暴露端口号，查看是否都可以访问tomcat的主页
`验证可以成功访问之后我们先把资源删除，后面使用私有仓库中的镜像进行创建`
[root@master1 demo]# kubectl delete -f tomcat01.yaml
deployment.extensions "my-tomcat" deleted
service "my-tomcat" deleted
问题处理：
`如果遇到处于Terminating状态的无法删除的资源`
[root@localhost demo]# kubectl get pods
NAME READY STATUS RESTARTS AGE
my-tomcat-57667b9d9-8bkns 1/1 `Terminating` 0 84s
my-tomcat-57667b9d9-kcddv 1/1 `Terminating` 0 84s
#这种情况下可以使用强制删除命令
`格式：kubectl delete pod [pod name] --force --grace-period=0 -n [namespace]`
[root@localhost demo]# kubectl delete pod my-tomcat-57667b9d9-8bkns --force --grace-period=0 -n default
warning: Immediate deletion does not wait for confirmation that the running resource has been terminated. The resource may continue to run on the cluster indefinitely.
pod "my-tomcat-57667b9d9-8bkns" force deleted
[root@localhost demo]# kubectl delete pod my-tomcat-57667b9d9-kcddv --force --grace-period=0 -n default
warning: Immediate deletion does not wait for confirmation that the running resource has been terminated. The resource may continue to run on the cluster indefinitely.
pod "my-tomcat-57667b9d9-kcddv" force deleted
[root@localhost demo]# kubectl get pods
NAME READY STATUS RESTARTS AGE
pod/mypod 1/1 Running 1 8h
pod/nginx-6c94d899fd-8pf48 1/1 Running 1 3d
pod/nginx-deployment-5477945587-f5dsm 1/1 Running 1 2d23h
pod/nginx-deployment-5477945587-hmgd2 1/1 Running 1 2d23h
pod/nginx-deployment-5477945587-pl2hn 1/1 Running 1 2d23h
第五步：node1上操作（之前登陆过Harbor仓库的节点）
我们需要先删除我们之前上传到私有仓库的额project/tomcat镜像
node2中之前打标签的镜像也需要删除：
[root@node2 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
192.168.18.134/project/tomcat latest aeea3708743f 3 days ago 529MB
[root@node2 ~]# docker rmi 192.168.18.134/project/tomcat
Untagged: 192.168.18.134/project/tomcat:latest
Untagged: 192.168.18.134/project/tomcat@sha256:8ffa1b72bf611ac305523ed5bd6329afd051c7211fbe5f0b5c46ea5fb1adba46
`镜像打标签`
[root@node2 ~]# docker tag tomcat:8.0.52 192.168.18.134/project/tomcat
`上传镜像到Harbor`
[root@node2 ~]# docker push 192.168.18.134/project/tomcat
#此时我们就可以在私有仓库中看到新上传的镜像了
`查看登陆凭据`
[root@node2 ~]# cat .docker/config.json
{
"auths": {
"192.168.18.134": { #访问的IP地址
"auth": "YWRtaW46SGFyYm9yMTIzNDU=" #验证
}
},
"HttpHeaders": { #头部信息
"User-Agent": "Docker-Client/19.03.5 (linux)"
}
`生成非换行形式的验证码`
[root@node2 ~]# cat .docker/config.json | base64 -w 0
ewoJImF1dGhzIjogewoJCSIxOTIuMTY4LjE4LjEzNCI6IHsKCQkJImF1dGgiOiAiWVdSdGFXNDZTR0Z5WW05eU1USXpORFU9IgoJCX0KCX0sCgkiSHR0cEhlYWRlcnMiOiB7CgkJIlVzZXItQWdlbnQiOiAiRG9ja2VyLUNsaWVudC8xOS4wMy41IChsaW51eCkiCgl9Cn0=
特别注意：此时下载次数为0，一会我们使用私有仓库中的镜像进行资源的创建，那么拉取的过程必定会下载镜像，应当数值会有变化
第六步：master1中创建安全组件的yaml文件
[root@master1 demo]# vim registry-pull-secret.yaml
apiVersion: v1
kind: Secret
metadata:
name: registry-pull-secret
data:
.dockerconfigjson: ewoJImF1dGhzIjogewoJCSIxOTIuMTY4LjE4LjEzNCI6IHsKCQkJImF1dGgiOiAiWVdSdGFXNDZTR0Z5WW05eU1USXpORFU9IgoJCX0KCX0sCgkiSHR0cEhlYWRlcnMiOiB7CgkJIlVzZXItQWdlbnQiOiAiRG9ja2VyLUNsaWVudC8xOS4wMy41IChsaW51eCkiCgl9Cn0=
type: kubernetes.io/dockerconfigjson
`创建secret资源`
[root@master1 demo]# kubectl create -f registry-pull-secret.yaml
secret/registry-pull-secret created
`查看secret资源`
[root@master1 demo]# kubectl get secret
NAME TYPE DATA AGE
default-token-pbr9p kubernetes.io/service-account-token 3 10d
`registry-pull-secret kubernetes.io/dockerconfigjson 1 25s`
[root@master1 demo]# vim tomcat01.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: my-tomcat
spec:
replicas: 2
template:
metadata:
labels:
app: my-tomcat
spec:
imagePullSecrets: #证书拉取的凭据
- name: registry-pull-secret #名称
containers:
- name: my-tomcat
image: 192.168.18.134/project/tomcat #镜像的下载位置做此修改
ports:
- containerPort: 80
......以下省略多行
#修改完成后按Esc退出插入模式，输入:wq保存退出
`创建tomcat01资源`
[root@master1 demo]# kubectl create -f tomcat01.yaml
deployment.extensions/my-tomcat created
service/my-tomcat created
[root@master1 demo]# kubectl get pods,deploy,svc,ep
NAME READY STATUS RESTARTS AGE
pod/my-nginx-d55b94fd-kc2gl 1/1 Running 1 2d1h
pod/my-nginx-d55b94fd-tkr42 1/1 Running 1 2d1h
`pod/my-tomcat-7c5b6db486-bzjlv` 1/1 Running 0 56s
`pod/my-tomcat-7c5b6db486-kw8m4` 1/1 Running 0 56s
pod/mypod 1/1 Running 1 9h
pod/nginx-6c94d899fd-8pf48 1/1 Running 1 3d1h
pod/nginx-deployment-5477945587-f5dsm 1/1 Running 1 3d
pod/nginx-deployment-5477945587-hmgd2 1/1 Running 1 3d
pod/nginx-deployment-5477945587-pl2hn 1/1 Running 1 3d
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
deployment.extensions/my-nginx 2 2 2 2 2d1h
`deployment.extensions/my-tomcat` 2 2 2 2 56s
deployment.extensions/nginx 1 1 1 1 8d
deployment.extensions/nginx-deployment 3 3 3 3 3d
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.0.0.1 <none> 443/TCP 10d
service/my-nginx-service NodePort 10.0.0.210 <none> 80:40377/TCP 2d1h
`service/my-tomcat` NodePort 10.0.0.235 <none> 8080:43654/TCP 56s
service/nginx-service NodePort 10.0.0.242 <none> 80:40422/TCP 3d11h
#对外端口为43654
NAME ENDPOINTS AGE
endpoints/kubernetes 192.168.18.128:6443,192.168.18.132:6443 10d
endpoints/my-nginx-service 172.17.32.4:80,172.17.40.3:80 2d1h
`endpoints/my-tomcat` 172.17.32.6:8080,172.17.40.6:8080 56s
endpoints/nginx-service 172.17.40.5:80 3d11h
接下来我们需要验证的就是资源加载没有任何问题的情况下，镜像资源是否来自我们的Harbor私有仓库呢？
这里就需要关注我们私有仓库中镜像的下载数了
结果：这时显示下载数由之前的0变为2，这就说明我们创建的两个资源镜像是从私有仓库中下载的！
我们再使用宿主机的浏览器验证192.168.18.148:43654和192.168.18.145:43654这两个节点地址还是可以访问tomcat的主页
