Docker的基础环境搭建

1.升级系统的内核

cd  /etc/yum.repos.d/
wget http://www.hop5.in/yum/el6/hop5.repo
yum install kernel-ml-aufs kernel-ml-aufs-devel  -y

default=0 set to 0 and check Centos
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
[[email protected] ~]# vim /etc/grub.conf 
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes tothis file
# NOTICE:  You have a /bootpartition.  This means that
#          all kernel andinitrd paths are relative to /boot/, eg.
#          root (hd0,0)
#          kernel/vmlinuz-version ro root=/dev/sda3
#          initrd/initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (3.10.5-3.el6.x86_64)
        root (hd0,0)
        kernel/vmlinuz-3.10.5-3.el6.x86_64 ro root=UUID=7b76340c-8d26-421c-b2bb-802770973f88rd_NO_LU
KS rd_NO_LVM.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16crashkernel=auto  KEYBOARDTYPE=pc KEY
TABLE=us rd_NO_DM rhgb quiet
        initrd/initramfs-3.10.5-3.el6.x86_64.img
title CentOS 6 (2.6.32-573.el6.x86_64)

然后重启
reboot
检查系统内核：
[[email protected] ~]# uname -r
3.10.5-3.el6.x86_64
查看内核是否支持aufs
[[email protected] ~]# grep aufs /proc/filesystems
nodev   aufs

2.关闭selinux

[[email protected] ~]# getenforce
Disabled
没有的话关闭selinux
sed -i ‘s/SELINUX=enforcing/SELINUX=disabled/‘ /etc/selinux/config

3.安装docker

在Fedora EPEL源中已经提供了docker-io包，下载安装epel：
rpm -ivh http://mirrors.sohu.com/fedora-epel/6/x86_64/epel-release-6-8.noarch.rpm
sed -i ‘s/^mirrorlist=https/mirrorlist=http/‘ /etc/yum.repos.d/epel.repo

4.yum 安装docker-io

yum -y install docker-io

5.启动Docker

[[email protected] ~]# service docker start
Starting cgconfig service:                                 [确定]
Starting docker:                                           [确定]
[[email protected] ~]#

6.查看docker的版本

[[email protected] ~]# 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
[[email protected] ~]#

7.查看Docker的日志

[[email protected] ~]# cat /var/log/docker
\n2016年 08月 02日星期二 17:08:53 CST\n
time="2016-08-02T17:08:53.628209179+08:00" level=info msg="Listening for HTTP on unix (/var/run/docker.sock)"
time="2016-08-02T17:08:53.765733247+08:00" level=warning msg="Running modprobe bridge nf_nat failed with message: insmod /lib/modules/3.10.5-3.el6.x86_64/kernel/net/llc/llc.ko \ninsmod /lib/modules/3.10.5-3.el6.x86_64/kernel/net/802/stp.ko \ninstall /sbin/modprobe --ignore-install bridge && /sbin/sysctl -q -w net.bridge.bridge-nf-call-arptables=0 net.bridge.bridge-nf-call-iptables=0 net.bridge.bridge-nf-call-ip6tables=0\ninsmod /lib/modules/3.10.5-3.el6.x86_64/kernel/net/bridge/bridge.ko \ninsmod /lib/modules/3.10.5-3.el6.x86_64/kernel/net/netfilter/nf_conntrack.ko \ninsmod /lib/modules/3.10.5-3.el6.x86_64/kernel/net/netfilter/nf_nat.ko \n, error: exit status 1"
time="2016-08-02T17:08:54.018750099+08:00" level=warning msg="Your kernel does not support swap memory limit."
time="2016-08-02T17:08:54.019550061+08:00" level=info msg="Loading containers: start."
 
time="2016-08-02T17:08:54.019778904+08:00" level=info msg="Loading containers: done."
time="2016-08-02T17:08:54.019801548+08:00" level=info msg="Daemon has completed initialization"
time="2016-08-02T17:08:54.019823924+08:00" level=info msg="Docker daemon" commit="786b29d/1.7.1" execdriver=native-0.2 graphdriver=aufs version=1.7.1
time="2016-08-02T17:10:12.131694594+08:00" level=info msg="GET /v1.19/version"
[[email protected] ~]#