How to uninstall and reinstall docker-Docker-php.cn

How to uninstall and reinstall docker

Specific steps:

(Recommended video tutorial:Docker video tutorial)

Uninstall the old version of docker before reinstalling

rpm list installed|grep docker

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Or use this command

rpm -qa|grep docker //查看已经安装的docker安装包,列出入校内容 docker.x86_64 2:1.12.6-16.el7.centos @extras docker-client.x86_64 2:1.12.6-16.el7.centos @extras docker-common.x86_64 2:1.12.6-16.el7.centos @extra

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Delete respectively

yum -y remove docker.x86_64 yum -y remove docker-client.x86_64 yum -y remove docker-common.x86_64

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Delete the docker image

rm -rf /var/lib/docker

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Reinstall

yum update //确保yum包最新

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yum install -y yum-utils

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(recommended related tutorials:docker tutorial)

Check whether there is device-mapper-persistent-data package (rpm -qa|grep device-mapper-persistent-data, if so) There is no need to install it). If it is not installed, execute the command:

yum install -y device-mapper-persistent-data

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to check whether there is lvm2 package (rpm -qa|grep lvm2, if there is, there is no need to install it). If it is not installed, execute the command :

yum install -y lvm2

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yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo //注意,以上为设置yum源,从Docker官方地址下载安装包 yum list docker-ce --showduplicates | sort -r //查看仓库中所有的docker版本 yum install docker-ce(默认安装)或 yum install docker-ce-17.12.0.ce(注:17.12.0是版本号,可根据列表选择)

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Set docker to automatically start and start services after booting up

[root@localhost softs]# systemctl enable docker [root@localhost softs]# systemctl start docker

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