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Docker-基础入门以及安装

Docker-存储引擎管理

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docker 命令帮助

docker 是客户端命令,有很多子命令,可以用下面方法查看帮助

docker
man docker 
docker  --help
man docker-COMMAND
docker COMMAND --help
验证docker版本
[root@ubuntu1804 ~]#docker version
Client: Docker Engine - Community
 Version:           19.03.5
 API version:       1.40
 Go version:        go1.12.12
 Git commit:        633a0ea838
 Built:             Wed Nov 13 07:29:52 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.5
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.12
  Git commit:       633a0ea838
  Built:            Wed Nov 13 07:28:22 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.10
  GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
 runc:
  Version:          1.0.0-rc8+dev
  GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683
验证docker0网卡

在docker安装启动之后,默认会生成一个名称为docker0的网卡并且默认IP地址为172.17.0.1的网卡

#ubuntu18.04安装docker后网卡配置
[root@ubuntu1804 ~]#ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 00:0c:29:34:df:91 brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.100/24 brd 10.0.0.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe34:df91/64 scope link 
       valid_lft forever preferred_lft forever
4: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:d3:26:ed:4e brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
       valid_lft forever preferred_lft forever
    inet6 fe80::42:d3ff:fe26:ed4e/64 scope link 
       valid_lft forever preferred_lft forever

#CentOS 7.6 安装docker后网卡配置
[root@centos7 ~]#ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:ca:00:e4 brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.7/24 brd 10.0.0.255 scope global noprefixroute eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:feca:e4/64 scope link 
       valid_lft forever preferred_lft forever
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
    link/ether 02:42:d2:81:c2:e0 brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
       valid_lft forever preferred_lft forever

#CentOS 8.1 安装docker后网卡配置   
[root@centos8 ~]#ip a 
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 00:0c:29:4d:ef:3e brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.18/24 brd 10.0.0.255 scope global noprefixroute eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe4d:ef3e/64 scope link 
       valid_lft forever preferred_lft forever
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
    link/ether 02:42:f5:3e:65:b6 brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
       valid_lft forever preferred_lft forever
[root@centos8 ~]#route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         10.0.0.2        0.0.0.0         UG    100    0        0 eth0
10.0.0.0        0.0.0.0         255.255.255.0   U     100    0        0 eth0
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
验证docker 信息
[root@ubuntu1804 ~]#docker info
Client:
 Debug Mode: false     #client 端是否开启 debug

Server:
 Containers: 2   #当前 主机运行的容器总数
  Running: 0     #有几个容器是正在运行的
  Paused: 0      #有几个容器是暂停的
  Stopped: 2     #有几个容器是停止的
 Images: 4       #当前服务器的镜像数
 Server Version: 19.03.5   #服务端版本
 Storage Driver: overlay2  #正在使用的存储引擎
  Backing Filesystem: extfs   #后端文件系统,即服务器的磁盘文件系统
  Supports d_type: true  #是否支持 d_type
  Native Overlay Diff: true  #是否支持差异数据存储
 Logging Driver: json-file   #日志类型 
 Cgroup Driver: cgroupfs  #Cgr oups 类型
 Plugins:                  #插件
  Volume: local            #卷 
  Network: bridge host ipvlan macvlan null overlay # overlay 跨主机通信
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog  #日 志类型
 Swarm: inactive    #是否支持 swarm
 Runtimes: runc     #已安装的容器运行时
 Default Runtime: runc   #默认使用的容器运行时
 Init Binary: docker-init   #初始化容器的守护进程,即 pid 为 1的进程
 containerd version: b34a5c8af56e510852c35414db4c1f4fa6172339 #版本
 runc version: 3e425f80a8c931f88e6d94a8c831b9d5aa481657  #runc 版本
 init version: fec3683  #init 版本
 Security Options:   #安全选项
  apparmor     #安全模块,https://docs.docker.com/engine/security/apparmor/
  seccomp  #安全计算模块,即制容器操作,https://docs.docker.com/engine/security/seccomp/
   Profile: default  #默认的配置文件
 Kernel Version: 4.15.0-29-generic  #宿主机内核版本
 Operating System: Ubuntu 18.04.1 LTS  #宿主机操作系统
 OSType: linux    #宿主机操作系统类型
 Architecture: x86_64   #宿主机架构
 CPUs: 1    #宿主机 CPU 数量
 Total Memory: 962MiB   #宿主机总内存 
 Name: ubuntu1804.magedu.org #宿主机 hostname
 ID: IZHJ:WPIN:BRMC:XQUI:VVVR:UVGK:NZBM:YQXT:JDWB:33RS:45V7:SQWJ #宿主机 ID
 Docker Root Dir: /var/lib/docker  #宿主机关于docker数据的保存目录
 Debug Mode: false   #server 端是否开启 debug
 Registry: https://index.docker.io/v1/  #仓库路径
 Labels:
 Experimental: false  #是否测试版
 Insecure Registries:
  127.0.0.0/8  : #非安全的镜像仓库
 Registry Mirrors:
  https://si7y70hh.mirror.aliyuncs.com/   #镜像仓库
 Live Restore Enabled: false  #是否开启 活动重启 (重启dockerdocker-daemon 不关闭 容器 )

WARNING: No swap limit support  #系统警告 信息 (没有开启 swapswap资源限制 )

解决上述SWAP报警提示

[root@ubuntu1804 ~]# vim /etc/default/grub
GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=2
GRUB_DISTRIBUTOR=lsb_ release -i -s 2> /dev/null || echo Debian
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0 swapaccount=1"  #修改此行

[root@ubuntu1804 ~]# update-grub
[root@ubuntu1804 ~]# reboot

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Docker-基础入门以及安装

Docker-存储引擎管理

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