docker安装部署
一、docker的安装和部署
1.国内源安装docker-ce(在线安装)
1）配置流量转发（centos7 linux内核）
cat <<EOF > /etc/sysctl.d/docker.conf net.bridge.bridge-nf-call-ip6tables = 1 net.bridge.bridge-nf-call-iptables = 1 net.ipv4.conf.default.rp_filter = 0 net.ipv4.conf.all.rp_filter = 0 net.ipv4.ip_forward=1 EOF
2)加载修改内核的参数，配置文件，按下列命令顺序进行
[root@localhost ~]# modprobe br_netfilter
[root@localhost ~]# sysctl -p /etc/sysctl.d/docker.conf
3)下载docker
[root@docker ~]# yum remove docker #先删除旧的版本 > docker-ce \ > docker-ce-cli \ > docker-ce-rootless-extras \ > docker-scan-plugin \ > docker-client \ > docker-client-latest \ > docker-common \ > docker-latest \ > docker-latest-logrotate \ > docker-logrotate \ > docker-engine Loaded plugins: fastestmirror, langpacks No Match for argument: docker No Match for argument: docker-client No Match for argument: docker-client-latest No Match for argument: docker-common No Match for argument: docker-latest No Match for argument: docker-latest-logrotate No Match for argument: docker-logrotate No Match for argument: docker-engine No Packages marked for removal [root@docker ~]# yum install -y yum-utils #安装yum-utils，主要提供yum-config-manager命令 [root@docker ~]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo #下载并安装docker的仓库 Loaded plugins: fastestmirror, langpacks adding repo from: https://download.docker.com/linux/centos/docker-ce.repo grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo repo saved to /etc/yum.repos.d/docker-ce.repo #提示安装成功了 [root@docker ~]# yum list docker-ce --showduplicates | sort -r #查看可获取的docker版本 * updates: mirrors.ustc.edu.cn Loading mirror speeds from cached hostfile Loaded plugins: fastestmirror, langpacks Installed Packages * extras: mirrors.ustc.edu.cn * epel: hkg.mirror.rackspace.com docker-ce.x86_64 3:20.10.9-3.el7 docker-ce-stable docker-ce.x86_64 3:20.10.9-3.el7 @docker-ce-stable docker-ce.x86_64 3:20.10.8-3.el7 docker-ce-stable docker-ce.x86_64 3:20.10.7-3.el7 docker-ce-stable docker-ce.x86_64 3:20.10.6-3.el7 docker-ce-stable docker-ce.x86_64 3:20.10.5-3.el7 docker-ce-stable docker-ce.x86_64 3:20.10.4-3.el7 docker-ce-stable docker-ce.x86_64 3:20.10.3-3.el7 docker-ce-stable docker-ce.x86_64 3:20.10.2-3.el7 docker-ce-stable docker-ce.x86_64 3:20.10.1-3.el7 docker-ce-stable [root@docker ~]# yum install docker-ce docker-ce-cli containerd.io #直接安装最新的docker版本 [root@docker ~]# yum install docker-ce-20.10.9 docker-ce-cli-20.10.9 containerd.io #安装指定版本
4)启动docker
[root@docker ~]# systemctl start docker #启动docker [root@docker ~]# systemctl status docker | grep running #查看运行状态 Active: active (running) since Wed 2022-01-26 00:28:53 CST; 1min 25s ago [root@docker ~]# [root@docker ~]# systemctl enable docker #设置开机自启 Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service. [root@docker ~]#
5)设置镜像加速器
docker默认会从外国网站获取镜像，这样在网络不好的情况下镜像拉去得特别慢，所以设置docker从内网的镜像源拉取镜像。
[root@docker ~]# cat /etc/docker/daemon.json #设置镜像加速器 { "registry-mirrors": ["https://b9pmyelo.mirror.aliyuncs.com"] } [root@docker ~]# systemctl restart docker #重启docker [root@docker ~]# docker info |tail -5 #检查加速器配置是否成功 127.0.0.0/8 Registry Mirrors: https://b9pmyelo.mirror.aliyuncs.com/ #加速器配置成功，仓库已经是阿里云 Live Restore Enabled: false [root@docker ~]#
6)查看docker版本
docker -v
7)处理docker info告警信息
[root@docker ~]# docker info | tail WARNING: bridge-nf-call-iptables is disabled #有告警信息 WARNING: bridge-nf-call-ip6tables is disabled [root@docker ~]# vim /etc/sysctl.conf #打开sysctl.conf文件，添加下面两句 net.bridge.bridge-nf-call-ip6tables = 1 net.bridge.bridge-nf-call-iptables = 1 [root@docker ~]# sysctl -p #使配置生效，这时docker info就没有告警信息了
