CentOS6.X下Docker如何安装

小编给大家分享一下CentOS6.X下Docker如何安装，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！

[X] 一、禁用selinux

由于Selinux和LXC有冲突,所以需要禁用selinux.编辑/etc/selinux/config,设置两个关键变量.

SELINUX=disabledSELINUXTYPE=targeted

[X] 二、安装Fedora EPEL源

rpm -ivh ./epel-release-6-8.noarch.rpm  或者:  #yum install http://ftp.riken.jp/Linux/fedora/epel/6/x86_64/epel-release-6-8.noarch.rpm

[X] 三、添加hop5.repo源

cp ./hop5.repo /etc/yum.repos.d        或者:  #cd /etc/yum.repos.d        #wget http://www.hop5.in/yum/el6/hop5.repo

[X] 四、安装Docker

yum安装

[X] 升级带aufs模块的3.10内核((可选)

yum install kernel-ml-aufs kernel-ml-aufs-devel

1. 修改grub的主配置文件/etc/grub.conf，设置default=0，表示第一个title下的内容为默认启动的kernel（一般新安装的内核在第一个位置）。

2. 重启系统reboot now,

3. 然后执行uname -r,查看是否已经是3.10内核!

[root@localhost ~]# uname -r
3.10.5-3.el6.x86_64

4. 执行grep aufs /proc/filesystems,查看内核是否支持aufs!

[root@localhost ~]# grep aufs /proc/filesystems
nodev aufs

[X] 安装docker

yum install redhat-lsbyum install iptableschkconfig ip6tables offchkconfig iptables offservice ip6tables stopservice iptables stopyum install device-mapper-libsyum install libcgroup*yum install docker-io

如果报错:Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again

解决办法是编辑/etc/yum.repos.d/epel.repo，把基础的恢复，镜像的地址注释掉#baseurlmirrorlist改成baseurl#mirrorlist然后执行: yum clean all

============================================================================================================================================================================================================================================= Package                                                       Arch                                                  Version                                                       Repository                                           Size=============================================================================================================================================================================================================================================Installing: docker-io                                                     x86_64                                                1.2.0-3.el6                                                   epel                                                4.2 MInstalling for dependencies: lua-alt-getopt                                                noarch                                                0.7.0-1.el6                                                   epel                                                6.9 k lua-filesystem                                                x86_64                                                1.4.2-1.el6                                                   epel                                                 24 k lua-lxc                                                       x86_64                                                1.0.6-1.el6                                                   epel                                                 15 k lxc                                                           x86_64                                                1.0.6-1.el6                                                   epel                                                120 k lxc-libs                                                      x86_64                                                1.0.6-1.el6                                                   epel                                                248 kTransaction Summary=============================================================================================================================================================================================================================================Install       6 Package(s)Downloading Packages:(1/6): docker-io-1.2.0-3.el6.x86_64.rpm                                                                                                                                                                               | 4.2 MB     00:02(2/6): lua-alt-getopt-0.7.0-1.el6.noarch.rpm                                                                                                                                                                          | 6.9 kB     00:00(3/6): lua-filesystem-1.4.2-1.el6.x86_64.rpm                                                                                                                                                                          |  24 kB     00:00(4/6): lua-lxc-1.0.6-1.el6.x86_64.rpm                                                                                                                                                                                 |  15 kB     00:00(5/6): lxc-1.0.6-1.el6.x86_64.rpm                                                                                                                                                                                     | 120 kB     00:00(6/6): lxc-libs-1.0.6-1.el6.x86_64.rpm                                                                                                                                                                                | 248 kB     00:00---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

rpm手工安装:

先执行

rpm --nodeps -ev $(rpm -qa | grep -i 'device-mapper-libs-')rpm --nodeps -ev $(rpm -qa | grep -i 'device-mapper-')rpm --nodeps -ev $(rpm -qa | grep -i 'device-mapper-event-libs-')rpm --nodeps -ev $(rpm -qa | grep -i 'device-mapper-event-')rpm -ivh ./device-mapper-event-1.02.90-2.el6.x86_64.rpm ./device-mapper-event-libs-1.02.90-2.el6.x86_64.rpm ./device-mapper-1.02.90-2.el6.x86_64.rpm ./device-mapper-libs-1.02.90-2.el6.x86_64.rpm

再执行

rpm -ivh ./lxc-libs-1.0.6-1.el6.x86_64.rpmrpm -ivh ./lua-alt-getopt-0.7.0-1.el6.noarch.rpmrpm -ivh ./lua-filesystem-1.4.2-1.el6.x86_64.rpmrpm -ivh ./lua-lxc-1.0.6-1.el6.x86_64.rpmrpm -ivh ./lxc-1.0.6-1.el6.x86_64.rpm#6.4版本以下需要 rpm -ivh ./libcgroup-0.40.rc1-5.el6.x86_64.rpmrpm -ivh ./docker-io-1.3.2-2.el6.x86_64.rpm

[X] 五、初步验证docker

输入docker -h,如果有如下输出,就证明docker在形式上已经安装成功.

# docker -h Usage of docker:   -D=false: Enable debug mode   -H=[]: Multiple tcp://host:port or unix://path/to/socket to bind in daemon mode, single connection otherwise   -api-enable-cors=false: Enable CORS headers in the remote API   -b="": Attach containers to a pre-existing network bridge; use 'none' to disable container networking  -bip="": Use this CIDR notation address for the network bridge's IP, not compatible with -b   -d=false: Enable daemon mode   -dns=[]: Force docker to use specific DNS servers   -g="/var/lib/docker": Path to use as the root of the docker runtime   -icc=true: Enable inter-container communication   -ip="0.0.0.0": Default IP address to use when binding container ports   -iptables=true: Disable docker's addition of iptables rules   -p="/var/run/docker.pid": Path to use for daemon PID file  -r=true: Restart previously running containers   -s="": Force the docker runtime to use a specific storage driver   -v=false: Print version information and quit

[X] 六 、启动docker服务:

service docker start#docker -d -H unix:///var/run/docker.sock

[X] 七 、查找映象:

docker search 映象名字 从index.docker.io搜寻所需镜像. 去https://index.docker.io获取镜像相关的信息.

[X] 八 、进入 Docker 容器:

创建vi /bin/docker-enter.sh

#!/bin/shif [ -e $(dirname "$0")/nsenter ]; then  # with boot2docker, nsenter is not in the PATH but it is in the same folder  NSENTER=$(dirname "$0")/nsenterelse  NSENTER=nsenterfiif [ -z "$1" ]; then  echo "Usage: `basename "$0"` CONTAINER [COMMAND [ARG]...]"  echo ""  echo "Enters the Docker CONTAINER and executes the specified COMMAND."  echo "If COMMAND is not specified, runs an interactive shell in CONTAINER."else  PID=$(docker inspect --format "{{.State.Pid}}" "$1")  if [ -z "$PID" ]; then    exit 1  fi  shift  OPTS="--target $PID --mount --uts --ipc --net --pid --"  if [ -z "$1" ]; then    # No command given.    # Use su to clear all host environment variables except for TERM,    # initialize the environment variables HOME, SHELL, USER, LOGNAME, PATH,    # and start a login shell.    "$NSENTER" $OPTS su - root  else    # Use env to clear all host environment variables.    "$NSENTER" $OPTS env --ignore-environment -- "$@"  fifi

加上可执行chmod +x /bin/docker-enter.sh 运行docker-enter.sh ,这样就进入到指定的容器中!

[X] 附录:低版本的Redhat(6.3)可能要手动挂载cgroup

我们首选禁用cgroup对应服务cgconfig.

  service cgconfig stop # 关闭服务   chkconfig cgconfig off # 取消开机启动

然后挂载cgroup,可以命令行挂载

  mount -t cgroup none /cgroup  #仅本次有效

或者修改配置文件,编辑/etc/fstab,加入

none                    /cgroup                 cgroup  defaults        0 0

以上是"CentOS6.X下Docker如何安装"这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注行业资讯频道！