docker环境准备和安装
一、准备环境
1、查看系统和内核
[[email protected] ~]# cat /etc/redhat-release
CentOS Linux release 7.5.1804 (Core)
[[email protected] ~]# uname -r
3.10.0-862.el7.x86_64
2、修改内核，开启ipv4端口转发功能
[[email protected] ~]# vim /etc/sysctl.conf
net.ipv4.ip_forward = 1
二、安装yum源
[[email protected] ~]# wget -O /etc/yum.repos.d/docker-ce.repo https://mirrors.ustc.edu.cn/docker-ce/linux/centos/docker-ce.repo
–2020-08-09 13:26:18-- https://mirrors.ustc.edu.cn/docker-ce/linux/centos/docker-ce.repo
Resolving mirrors.ustc.edu.cn (mirrors.ustc.edu.cn)… 202.141.176.110, 2001:da8:d800:95::110
Connecting to mirrors.ustc.edu.cn (mirrors.ustc.edu.cn)|202.141.176.110|:443… connected.
HTTP request sent, awaiting response… 200 OK
Length: 2424 (2.4K) [application/octet-stream]
Saving to: ‘/etc/yum.repos.d/docker-ce.repo’
100%[===================================================================================================>] 2,424 --.-K/s in 0s2020-08-09 13:26:18 (473 MB/s) - ‘/etc/yum.repos.d/docker-ce.repo’ saved [2424/2424]
三、修改源下载地址
[[email protected] ~]# sed -i ‘s#download.docker.com#mirrors.tuna.tsinghua.edu.cn/docker-ce#g’ /etc/yum.repos.d/docker-ce.repo
四、安装开源版
[[email protected] ~]# yum install docker-ce -y
五、查看安装docker的版本
[[email protected] ~]# docker version
Client: Docker Engine - Community
Version: 19.03.12
API version: 1.40
Go version: go1.13.10
Git commit: 48a66213fe
Built: Mon Jun 22 15:46:54 2020
OS/Arch: linux/amd64
Experimental: false
六、启动docker并加入到开机启动
[[email protected] ~]# systemctl start docker
[[email protected] ~]# systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
七、docker启动后，会自动创建一个docker0的网桥
[[email protected] ~]# ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:18:ce:61:98 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
八、查看docker信息状态
[[email protected] ~]# docker info
Client:
Debug Mode: false
Server:
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 19.03.12
Storage Driver: overlay2
Backing Filesystem: xfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 7ad184331fa3e55e52b890ea95e65ba581ae3429
runc version: dc9208a3303feef5b3839f4323d9beb36df0a9dd
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 3.10.0-862.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 3.82GiB
Name: docker
ID: HEVW:LUD2:YLG5:DPRO:4SOW:SYOM:SNKM:B65D:TOCY:NC4X:4IN2:VU4R
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled