1. kubernetes 拉取私有镜像的测试

创建secret(创建方式有两钟,一种使用命令,第二种使用文件)

下面我的私有仓库如下:

  • reg.k8s.test.com
  • ureg.k8s.test.com

a. 修改docker/etc/docker/daemon.json文件

在所有的node节点中修改docker/etc/docker/daemon.json文件修改insecure-registries参数。必须包含上面上面私有仓库的地址:

{ "registry-mirrors": [ "https://registry.docker-cn.com"], "insecure-registries":["reg.k8s.test.com","ureg.k8s.test.com","uhub.service.ucloud.cn"] }

重启 docker 服务

systemctl restart docker

### 方法1. 使用文件生成secret

生成~/.docker/config.json配置文件

[root@ip-172-31-10-110 ~]# docker login reg.k8s.test.com Username: lvnian Password: <输入密码> 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 [root@ip-172-31-10-110 ~]# [root@ip-172-31-10-110 ~]# docker login ureg.k8s.test.com Username: lvnian Password: <输入密码> 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 [root@ip-172-31-10-110 ~]# ll ~/.docker/config.json -rw------- 1 root root 261 Nov 8 13:21 /root/.docker/config.json

测试密码是否成功,往私有仓库push images

[root@ip-172-31-10-110 ~]# docker pull nginx Using default tag: latest latest: Pulling from library/nginx f17d81b4b692: Pull complete 82dca86e04c3: Pull complete 046ccb106982: Pull complete Digest: sha256:d59a1aa7866258751a261bae525a1842c7ff0662d4f34a355d5f36826abc0341 Status: Downloaded newer image for nginx:latest [root@ip-172-31-10-110 ~]# docker tag nginx ureg.k8s.test.com/test/nginx [root@ip-172-31-10-110 ~]# docker push ureg.k8s.test.com/test/nginx The push refers to repository [ureg.k8s.test.com/test/nginx] ad9ac0e6043b: Pushed 6ccbee34dd10: Pushed 237472299760: Pushed latest: digest: sha256:427498d66ad8a3437939bb7ef613fe76458b550f6c43b915d8d4471c7d34a544 size: 948 [root@ip-172-31-10-110 ~]# docker tag nginx reg.k8s.test.com/test/nginx [root@ip-172-31-10-110 ~]# docker push reg.k8s.test.com/test/nginx The push refers to repository [reg.k8s.test.com/test/nginx] ad9ac0e6043b: Layer already exists 6ccbee34dd10: Layer already exists 237472299760: Layer already exists latest: digest: sha256:427498d66ad8a3437939bb7ef613fe76458b550f6c43b915d8d4471c7d34a544 size: 948

密码没问题
获取base64 -w 0 ~/.docker/config.json密文

[root@ip-172-31-10-110 ~]# base64 -w 0 ~/.docker/config.json ewoJImF1dGhjNWdlpHVnVaenB5Wld4aFFFeFdUa2xCVGtBeU1ERTMiCgkJfSwKCQkidXJlZy5rOHMueXVud2VpLnJlbGEubWUiOiB7CgkJCSJhdXRoIjogIloyRnZaM1Z2WkdWdVp6cHlaV3hoUUV4V1RrbEJUa0F5TURFMyIKCQl9Cgl9LAoJIkh0dHBIZWFkZXJzIjogewoJCSJVc2VyLUFnZW50IjogIkRvY2tlci1DbGllbnQvMTguMDYuMS1jZSAobGludXgpIgoJfQp9[root@ip-172-31-10-110 ~]# 

创建Secret

### vim secret.yaml apiVersion: v1 kind: Secret metadata: name: regsecret namespace: default data: .dockerconfigjson: ewoJImF1dGhjNWdlpHVnVaenB5Wld4aFFFeFdUa2xCVGtBeU1ERTMiCgkJfSwKCQkidXJlZy5rOHMueXVud2VpLnJlbGEubWUiOiB7CgkJCSJhdXRoIjogIloyRnZaM1Z2WkdWdVp6cHlaV3hoUUV4V1RrbEJUa0F5TURFMyIKCQl9Cgl9LAoJIkh0dHBIZWFkZXJzIjogewoJCSJVc2VyLUFnZW50IjogIkRvY2tlci1DbGllbnQvMTguMDYuMS1jZSAobGludXgpIgoJfQp9 type: kubernetes.io/dockerconfigjson

kubectl create -f secret.yaml \
kubectl describe Secret regsecret

创建deployment测试是否可以拉私有仓库的镜像

[root@ip-172-31-10-110 ~]# vim test.yaml apiVersion: extensions/v1beta1 kind: Deployment metadata: name: dentestreplce spec: replicas: 1 template: metadata: labels: name: dentestreplace spec: containers: - name: dentestreplace imagePullPolicy: Always image: ureg.k8s.test.com/rela_dev/logreport:latest imagePullSecrets: - name: regsecret
[root@ip-172-31-10-110 ~]# kubectl create -f test.yaml [root@ip-172-31-10-110 ~]# kubectl describe po/dentestreplce-6f788968fb-dr768 ... Volumes: default-token-tfmc8: Type: Secret (a volume populated by a Secret) SecretName: default-token-tfmc8 Optional: false QoS Class: BestEffort Node-Selectors: <none> Tolerations: <none> Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal Scheduled 57s default-scheduler Successfully assigned dentestreplce-6f788968fb-dr768 to 172.31.40.120 Normal SuccessfulMountVolume 57s kubelet, 172.31.40.120 MountVolume.SetUp succeeded for volume "default-token-tfmc8" Normal Pulling 57s kubelet, 172.31.40.120 pulling image "ureg.k8s.test.com/rela_dev/logreport:latest" Normal Pulled 15s kubelet, 172.31.40.120 Successfully pulled image "ureg.k8s.test.com/rela_dev/logreport:latest" Normal Created 15s kubelet, 172.31.40.120 Created container Normal Started 15s kubelet, 172.31.40.120 Started container [root@ip-172-31-10-110 ~]# 

查看结果,成功。上面是使用第一个私有仓库,第二个的测试也是一样。
注意,必须要确保私有仓库中本来就有ureg.k8s.test.com/rela_dev/logreport:latest这个image哦

另外一个私有参考也是一样这样测试即可。

方法2:

使用命令创建Secret
命令如下:

kubectl create secret docker-registry regsecret --docker-server=ureg.k8s.test.com --docker-username=lvnian --docker-password=LVNIAN@2017 --docker-email=lvnian@rela.me 

其中:

regsecret: 指定密钥的键名称, 可自行定义 --docker-server: 指定docker仓库地址 --docker-username: 指定docker仓库账号 --docker-password: 指定docker仓库密码 --docker-email: 指定邮件地址 -n : 命名空间,在那个命名空间创建,就只能在那个命名空间使用这个secret

其他步骤和上面的一样。