CentOS7一键安装docker-ce 脚本

[root@danrtsey ~]#cat install_docker-ce_centos7.sh
#!/bin/bash
#
#********************************************************************
#script_name:         install_docker-ce_centos7.sh
#Author:              Danrtsey
#mail:                [email protected]
#attentions:
#********************************************************************
export PATH=$PATH
[ -f /etc/init.d/functions ]&& . /etc/init.d/functions

COLOR="echo -e \\033[1;31m"
END="\033[m"

###Check if user is root
UID=`id | cut -d\( -f1 | cut -d= -f2`
if [ $UID -ne 0 ]; then
    echo "Error: This script must be executed as root."
    exit 1
fi

###set the ip in hosts
hostsset() {
echo "############################   Ip&Hosts Configuration  #######################################"
hostname=`hostname`
ip=`ip a|grep 'inet '|grep -v '127.0.0.1'|awk '{print $2}'|awk -F '/' '{print $1}'`
for i in ${ip}
do
    a=`grep "${i}" /etc/hosts`
    if [ ! -n "${a}" ];then
        echo "${i} ${hostname}" >> /etc/hosts 
    else
        break
    fi
done
}

ntp() {
yum -y install ntp
systemctl enable ntpd
echo 'server ntp1.aliyun.com' >> /etc/ntp.conf
echo 'server ntp2.aliyun.com' >> /etc/ntp.conf
systemctl start ntpd
if [ $? != 0 ]; then
   errorExit 'ntp 启动未成功'
fi
  return 0
}

# 配置 系统参数
syspro() {
echo "################################################################################################"
echo "                                        修改系统参数                                             "
echo "################################################################################################"

if [ `getenforce` == "Enforcing" ];then
        setenforce 0
        sed -i "s@SELINUX=enforcing@SELINUX=disabled@g" /etc/selinux/config
    elif [ `getenforce` == "Permissive" ];then
        sed -i "s@SELINUX=permissive@SELINUX=disabled@g" /etc/selinux/config
        setenforce 0
    else
        continue
fi
echo 'LANG="en_US.UTF-8"' >> /etc/profile && source /etc/profile

cat >>/etc/security/limits.conf<<EOF
* soft nproc 65535
* hard nproc 65535
* soft nofile 65535
* hard nofile 65535
EOF

cat >> /etc/sysctl.conf<<EOF
net.ipv4.ip_forward=1
net.bridge.bridge-nf-call-iptables=1
net.ipv4.neigh.default.gc_thresh1=4096
net.ipv4.neigh.default.gc_thresh2=6144
net.ipv4.neigh.default.gc_thresh3=8192
kernel.shmmax = 4294967295
kernel.shmmni = 4096
kernel.shmall = 1048576
kernel.sem = 1010 129280 1010 128
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 4194304
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576
fs.file-max = 6815744
net.core.somaxconn = 1024
vm.overcommit_memory = 1
EOF
modprobe br_netfilter
sysctl -p
}

# 安装更新系统，并配置docker-ce源
dkrepo() {
echo "#######################  安装更新系统，并配置docker-ce源  ########################################"

#yum update -y
yum install -y yum-utils device-mapper-persistent-data lvm2 bash-completion
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo || { ${COLOR}"互联网连接失败，请检查网络配置!"${END};exit; }
yum clean all
yum makecache all
printf '\n'
mkdir /etc/docker
cat >>/etc/docker/daemon.json<<EOF
{
"registry-mirrors": ["https://yeuphhaz.mirror.aliyuncs.com"],
"log-driver": "json-file",
"log-opts": {
    "max-size": "100m",
    "max-file": "3"
    }
}
EOF

    if [ $? != 0 ]; then
       errorExit 'docker 源配置未成功'
    fi
    return 0
}

# 卸载、安装 docker-ce
uninstall() {
    yum -y remove docker \
      docker-client \
      docker-client-latest \
      docker-common \
      docker-latest \
      docker-latest-logrotate \
      docker-logrotate \
      docker-selinux \
      docker-engine-selinux \
      docker-engine \
      container*
}

install() {
echo "############################        安装 docker-ce       #######################################"
    yum -y install docker-ce docker-ce-selinux
    systemctl start docker
    docker version && ${COLOR}"Docker安装成功"${END} || ${COLOR}"Docker安装失败"${END}
    systemctl enable docker
    if [ $? != 0 ]; then
       errorExit 'docker-ce 安装未成功'
    fi
    return 0
}

# Display an error and exit
errorExit() {
    echo "$@" >&2
    exit 1
}

hostsset

ntp

syspro

dkrepo

uninstall

install