CentOS7 部署docker
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1.docker安装
CentOS7
yum
install
epel-release -y
yum
install
docker -y
[root@Docker ~]
# docker version
Client:
Version: 1.12.6
API version: 1.24
Package version: docker-1.12.6-61.git85d7426.el7.centos.x86_64
Go version: go1.8.3
Git commit: 85d7426
/1
.12.6
Built: Tue Oct 24 15:40:21 2017
OS
/Arch
: linux
/amd64
Server:
Version: 1.12.6
API version: 1.24
Package version: docker-1.12.6-61.git85d7426.el7.centos.x86_64
Go version: go1.8.3
Git commit: 85d7426
/1
.12.6
Built: Tue Oct 24 15:40:21 2017
OS
/Arch
: linux
/amd64
[root@Docker ~]
#
[root@Docker ~]
# docker info
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 1.12.6
Storage Driver: devicemapper
Pool Name: docker-253:0-270443527-pool
Pool Blocksize: 65.54 kB
Base Device Size: 10.74 GB
Backing Filesystem: xfs
Data
file
:
/dev/loop0
Metadata
file
:
/dev/loop1
Data Space Used: 11.8 MB
Data Space Total: 107.4 GB
Data Space Available: 102.8 GB
Metadata Space Used: 581.6 kB
Metadata Space Total: 2.147 GB
Metadata Space Available: 2.147 GB
Thin Pool Minimum Free Space: 10.74 GB
Udev Sync Supported:
true
Deferred Removal Enabled:
true
Deferred Deletion Enabled:
true
Deferred Deleted Device Count: 0
Data loop
file
:
/var/lib/docker/devicemapper/devicemapper/data
WARNING: Usage of loopback devices is strongly discouraged
for
production use. Use `--storage-opt dm.thinpooldev` to specify a custom block storage device.
Metadata loop
file
:
/var/lib/docker/devicemapper/devicemapper/metadata
Library Version: 1.02.107-RHEL7 (2015-10-14)
Logging Driver: journald
Cgroup Driver: systemd
Plugins:
Volume:
local
Network: host bridge overlay null
Swarm: inactive
Runtimes: docker-runc runc
Default Runtime: docker-runc
Security Options: seccomp
Kernel Version: 3.10.0-327.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
Number of Docker Hooks: 3
CPUs: 2
Total Memory: 1.954 GiB
Name: localhost.localdomain
ID: 7NNL:RVYC:M6QY:CP2P:5SNV:3N25:U45I:TUWG:Y4NK:7H4R:CN2B:3E67
Docker Root Dir:
/var/lib/docker
Debug Mode (client):
false
Debug Mode (server):
false
Registry: https:
//index
.docker.io
/v1/
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled
Insecure Registries:
127.0.0.0
/8
Registries: docker.io (secure)
CentOS6
yum
install
epel-release -y
yum
install
lxc libcgroup device-map* -y
yum
install
docker-io -y
[root@Docker ~]
# docker version
Client version: 1.7.1
Client API version: 1.19
Go version (client): go1.4.2
Git commit (client): 786b29d
/1
.7.1
OS
/Arch
(client): linux
/amd64
Server version: 1.7.1
Server API version: 1.19
Go version (server): go1.4.2
Git commit (server): 786b29d
/1
.7.1
OS
/Arch
(server): linux
/amd64
[root@Docker ~]
#
[root@Docker ~]
# docker info
Containers: 0
Images: 0
Storage Driver: devicemapper
Pool Name: docker-253:0-130626-pool
Pool Blocksize: 65.54 kB
Backing Filesystem: extfs
Data
file
:
/dev/loop0
Metadata
file
:
/dev/loop1
Data Space Used: 305.7 MB
Data Space Total: 107.4 GB
Data Space Available: 11.1 GB
Metadata Space Used: 729.1 kB
Metadata Space Total: 2.147 GB
Metadata Space Available: 2.147 GB
Udev Sync Supported:
true
Deferred Removal Enabled:
false
Data loop
file
:
/var/lib/docker/devicemapper/devicemapper/data
Metadata loop
file
:
/var/lib/docker/devicemapper/devicemapper/metadata
Library Version: 1.02.117-RHEL6 (2016-12-13)
Execution Driver: native-0.2
Logging Driver: json-
file
Kernel Version: 2.6.32-431.el6.x86_64
Operating System: <unknown>
CPUs: 1
Total Memory: 1.834 GiB
Name: localhost.localdomain
ID: SKZZ:TYST:LUEG:N66O:364P:7YRG:GQ3W:ODYR:G476:JSHB:I2HF:3A5W
说明：docker 默认的存储驱动类型为devicemapper，docker-ce 默认的存储驱动类型为overlay2。
2.搜索并下载nginx容器
[root@Docker ~]
# docker search nginx
[root@Docker ~]
# docker pull docker.io/nginx
3.将容器的80端映射到本机的8080
[root@Docker ~]
# docker run --name=nginx -itd -p8080:80 docker.io/nginx bash
或者
[root@Docker ~]
# docker run --name nginx -itd -p8080:80 docker.io/nginx /bin/bash
或者
[root@Docker ~]
# docker run --name=nginx -itd -p8080:80 docker.io/nginx
注：--privileged 给予管理员权限，--restart=always 容器随docker宿主机的启动而启动；CentOS7安装服务器后若使用systemctl工具启动创建容器时需要执行
/usr/sbin/init
或
/sbin/init
命令。
4.查看docker容器进程
[root@Docker ~]
# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
26ae21c8bddd docker.io
/nginx
"bash"
5 seconds ago Up 4 seconds 0.0.0.0:8080->80
/tcp
nginx
5.查看docker容器IP地址
[root@Docker ~]
# docker inspect 0a9db4be695b |grep -i ip
"HostIp"
:
""
,
"IpcMode"
:
""
,
"LinkLocalIPv6Address"
:
""
,
"LinkLocalIPv6PrefixLen"
: 0,
"HostIp"
:
"0.0.0.0"
,
"SecondaryIPAddresses"
: null,
"SecondaryIPv6Addresses"
: null,
"GlobalIPv6Address"
:
""
,
"GlobalIPv6PrefixLen"
: 0,
"IPAddress"
:
"172.17.0.2"
,
"IPPrefixLen"
: 16,
"IPv6Gateway"
:
""
,
"IPAMConfig"
: null,
"IPAddress"
:
"172.17.0.2"
,
"IPPrefixLen"
: 16,
"IPv6Gateway"
:
""
,
"GlobalIPv6Address"
:
""
,
"GlobalIPv6PrefixLen"
: 0,
[root@Docker ~]
#
6.浏览器访问测试：
http:
//IP
:8080
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7.登录进入容器中，更改默认的测试页面内容
[root@Docker ~]
# docker exec -it 0a9db4be695b /bin/bash
root@0a9db4be695b:/
# cd /usr/share/nginx/html/
root@0a9db4be695b:
/usr/share/nginx/html
# ls
50x.html index.html
root@0a9db4be695b:
/usr/share/nginx/html
# echo "<h1>www.hello.com</h1>"> index.html
root@0a9db4be695b:
/usr/share/nginx/html
# exit
exit
[root@Docker ~]
#
8.浏览器访问测试：
http:
//IP
:8080
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9.强制删除所有的虚拟机
[root@Docker ~]
# docker rm -f `docker ps -aq`
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本文转自 dengaosky 51CTO博客，原文链接：http://blog.51cto.com/dengaosky/2045168，如需转载请自行联系原作者
