问题合集整理

Posted 2022-02-03 Zmac111

问题合集整理

• 一、Limux 虚拟机中重启网卡失败（centos7）
• 二、docker中容器启动时网卡没开启
• 三、安装docker私有仓库报错
• 四、docker登录私有仓库报错
• 五、清除镜像内存

一、Limux 虚拟机中重启网卡失败（centos7）

问题

[root@localhost ~]# systemctl restart network
Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.

解决办法

[root@localhost ~]# systemctl stop NetworkManager
[root@localhost ~]# systemctl disable NetworkManager
Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.
[root@localhost ~]# systemctl restart network
[root@localhost ~]# 

二、docker中容器启动时网卡没开启

问题

WARNING: IPv4 forwarding is disabled. Networking will not work.

解决办法

vim /etc/sysctl.conf   #添加  net.ipv4.ip_forward = 1
sysctl -p
net.ipv4.ip_forward = 1
systemctl restart docker    #重启docker
systemctl restart network   #重启网卡

三、安装docker私有仓库报错

问题

ERROR: for registry  Cannot create container for service registry: b'Conflict. The container name "/registry" is already in use by container "931086bb24de3f713c6350ff7c1fa4a0d55abb63ca1780432661ce2e1e20af12". You have to remove (or rename) that container to be able to reuse that name.'
ERROR: Encountered errors while bringing up the project.

解决办法

docker-compose down -v
docker rm 已有容器  # 删除所有容器
docker images | awk 'NR >=2 print $3' | xargs docker rmi  # 删除所有镜像
重新安装即可

四、docker登录私有仓库报错

问题

解决办法

[root@node01 ~]# systemctl daemon-reload
[root@node01 ~]# systemctl restart docker
[root@node01 ~]# docker login -u admin -p Harbor12345 https://hub.FENG.com
WARNING! Using --password via the CLI is insecure. Use --password-stdin.
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

五、清除镜像内存

[root@master ~]# free -m
              total        used        free      shared  buff/cache   available
Mem:           3935        1249         293          11        2393        2269
Swap:             0           0           0
[root@master ~]# cd demo
[root@master demo]# ls
my-deployment.yaml  nginx-deployment.yaml  nginx-service.yaml
[root@master demo]# echo 1 > /proc/sys/vm/drop_caches
[root@master demo]# echo 2 > /proc/sys/vm/drop_caches
[root@master demo]# echo 3 > /proc/sys/vm/drop_caches
[root@master demo]# free -m
              total        used        free      shared  buff/cache   available
Mem:           3935        1234        2210          11         491        2333
Swap:             0           0           0
[root@master demo]#