【docker 安装-环境初始化】

1、YUM 源

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo

wget -O /etc/yum.repos.d/epel.repo https://mirrors.aliyun.com/repo/Centos-7.repo

yum install -y bash-completion vim lrzsz wget expect net-tools nc nmap tree dos2unix htop iftop iotop unzip telnet s1 psmisc nethogs glances bc ntpdate openldap-devel

注释：没有 htop iftop s1 nethogs glances 安装包、、原因不详

开启 Linux 内核流量转发

cat < /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

执行

[root@localhost ~]# sysctl -p /etc/sysctl.d/docker.conf
sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-ip6tables: 没有那个文件或目录
sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: 没有那个文件或目录
net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.all.rp_filter = 0
net.ipv4.ip_forward = 1

再执行

[root@localhost ~]# modprobe br_netfilter
modprobe: FATAL: Module br_netfilter not found.
再执行
yum install bridge-utils -y
echo br_netfilter > /etc/modules-load.d/br_netfilter.conf
modprobe br_netfilter

不知道咋回事就成了~~~嘿嘿

查看有yum源中有没有docker 的包

yum list docker-ce --showduplicates | sort -r

没有就添加yum 源

curl -o /etc/yum.repos.d/docker-ce.repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

curl -o /etc/yum.repos.d/Centos-7.repo https://mirrors.aliyun.com/repo/Centos-7.repo

更新缓存

[root@localhost yum.repos.d]# yum clean all && yum makecache

查看yum 源

[root@localhost yum.repos.d]# yum list docker-ce --showduplicates | sort -r

安装docker

yum install docker-ce-20.10.6 -y

卸载docker

yum remove -y docker-ce-20.10.6

配置docker 镜像加速器

[root@localhost etc]# mkdir -p /etc/docker
[root@localhost etc]# touch /etc/docker/daemon.json
[root@localhost etc]# cd docker/
[root@localhost docker]# ls
daemon.json
[root@localhost docker]# vim daemon.json
[root@localhost docker]# cat daemon.json
{
“registry-mirrors” : [
“https://8xpk5wnt.mirror.aliyuncs.com”
]
}
[root@localhost docker]#

启动 docker

systemctl daemon-reload
systemctl enable docker
systemctl restart docker

[root@localhost docker]# systemctl daemon-reload
[root@localhost docker]# systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/s ystemd/system/docker.service.
[root@localhost docker]# systemctl restart docker
[root@localhost docker]# ps -ef | grep docker
root 2824 1 1 22:54 ? 00:00:00 /usr/bin/dockerd -H fd:// --containerd=/run /containerd/containerd.sock
root 2994 2307 0 22:54 pts/0 00:00:00 grep --color=auto docker
[root@localhost docker]# ^C
[root@localhost docker]#

查看是否成功配置
出现以下内容则是配置成功

[root@localhost docker]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@localhost docker]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
[root@localhost docker]# docker version
Client: Docker Engine - Community
Version: 20.10.14
API version: 1.41
Go version: go1.16.15
Git commit: a224086
Built: Thu Mar 24 01:49:57 2022
OS/Arch: linux/amd64
Context: default
Experimental: true

Server: Docker Engine - Community
Engine:
Version: 20.10.6
API version: 1.41 (minimum version 1.12)
Go version: go1.13.15
Git commit: 8728dd2
Built: Fri Apr 9 22:43:57 2021
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.5.11
GitCommit: 3df54a852345ae127d1fa3092b95168e4a88e2f8
runc:
Version: 1.0.3
GitCommit: v1.0.3-0-gf46b6ba
docker-init:
Version: 0.19.0
GitCommit: de40ad0
[root@localhost docker]#