随着企业Docker容器越来越多，如果要靠手工去管理docker，肯定非常吃力，而且也不现实，这就需要我们把日常的操作变成自动化管理，通过脚本工具，将工作减轻到最小，解放运维人员，如下为企业Docker自动化部署脚本V1版本，如果需要更多其他的功能，可以自己定制和修改。
如下自动化管理脚本功能：
1）通过YUM自动安装Docker平台；
2）通过该脚本，可以自动配置桥接网络；
3）自动创建docker容器，基于centos操作系统；
4）自动收集创建好的Docker容器，集中管理；
5）通过PIPEWORK工具手动指定独立IP地址；
概要：该脚本能够自动安装并配置docker虚拟化及桥接网络，同时使用pipework这个软件来配置我们的容器IP，能够实现容器的一个简单的管理:
#!/bin/bash
#auto install docker and Create VM
#by jfedu.net wugk 2015-02-05
#Define PATH Varablies
#######################
IPADDR=`ifconfig |grep "Bcast"|awk '{print $2}'|cut -d: -f2|grep "192.168"|head -1`
GATEWAY=`route -n|grep "UG"|awk '{print $2}'|grep "192.168"|head -1`
IPADDR_NET=`ifconfig |grep "Bcast"|awk '{print $2}'|cut -d: -f2|grep "192.168"|head -1|awk -F. '{print $1"."$2"."$3"."}'`
LIST="/root/docker_vmlist.csv"
if [ -f /etc/init.d/docker ];then
sed -i -e '/^exec/d' -e '/^prog/aexec=\"/usr/bin/\$prog --storage-driver devicemapper --storage-opt dm.loopdatasize=2000G --storage-opt dm.loopmetadatasize=10G --storage-opt dm.fs=ext4 --storage-opt dm.basesize=40G\"' /etc/init.d/docker
fi
for i in `seq 1 253`;do ping -c 1 ${IPADDR_NET}${i} ;[ $? -ne 0 ]&& DOCKER_IPADDR="${IPADDR_NET}${i}" &&break;done >>/dev/null 2>&1
echo "##################"
echo -e "Dynamic get docker IP,The Docker IP address\n\n$DOCKER_IPADDR"
if [ ! -e /etc/sysconfig/network-scripts/ifcfg-eth0 ];then
echo -e "\033[32mThe ifcfg-eth0 Interface is not exist,Please exit or change scripts.\nYou can to exec\nsed -i \'s/eth0/eth0/g\' $0\033[0m"
exit 0
fi
NETWORK=(
HWADDR=`ifconfig eth0 |egrep "HWaddr|Bcast" |tr "\n" " "|awk '{print $5,$7,$NF}'|sed -e 's/addr://g' -e 's/Mask://g'|awk '{print $1}'`
IPADDR=`ifconfig eth0 |egrep "HWaddr|Bcast" |tr "\n" " "|awk '{print $5,$7,$NF}'|sed -e 's/addr://g' -e 's/Mask://g'|awk '{print $2}'`
NETMASK=`ifconfig eth0 |egrep "HWaddr|Bcast" |tr "\n" " "|awk '{print $5,$7,$NF}'|sed -e 's/addr://g' -e 's/Mask://g'|awk '{print $3}'`
GATEWAY=`route -n|grep "UG"|awk '{print $2}'`
)
if [ -z "$1" -o -z "$2" ];then
echo -e "\033[32m---------------------------------\033[0m"
echo -e "\033[32mPlease exec $0 CPU(C) MEM(G),example $0 4 8\033[0m"
exit 0
fi
#CPU=`expr $2 - 1`
#if [ ! -e /usr/bin/bc ];then
# yum install bc -y >>/dev/null 2>&1
#fi
CPU_ALL=`cat /proc/cpuinfo |grep processor|wc -l`
if [ ! -f $LIST ];then
CPU_COUNT=$1
CPU_1="0"
CPU1=`expr $CPU_1 + 0`
CPU2=`expr $CPU1 + $CPU_COUNT - 1`
if [ $CPU2 -gt $CPU_ALL ];then
echo -e "\033[32mThe System CPU count is $CPU_ALL,not more than it.\033[0m"
exit
fi
else
CPU_COUNT=$1
CPU_1=`cat $LIST|tail -1|awk -F"," '{print $4}'|awk -F"-" '{print $2}'`
CPU1=`expr $CPU_1 + 1`
CPU2=`expr $CPU1 + $CPU_COUNT - 1`
if [ $CPU2 -gt $CPU_ALL ];then
echo -e "\033[32mThe System CPU count is $CPU_ALL,not more than it.\033[0m"
exit
fi
fi
MEM_F=`echo $2 \* 1024|bc`
MEM=`printf "%.0f\n" $MEM_F`
DISK=40
USER=$3
REMARK=$4
ping $DOCKER_IPADDR -c 1 >>/dev/null 2>&1
if [ $? -eq 0 ];then
echo -e "\033[32m---------------------------------\033[0m"
echo -e "\033[32mThe IP address to be used,Please change other IP,exit.\033[0m"
exit 0
fi
if [ ! -e /etc/init.d/docker ];then
rpm -e epel-release --nodeps
rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
yum install docker-io -y
yum install device-mapper* -y
mkdir -p /export/docker/
cd /var/lib/ ;rm -rf docker ;ln -s /export/docker/ .
mkdir -p /var/lib/docker/devicemapper/devicemapper
#dd if=/dev/zero of=/var/lib/docker/devicemapper/devicemapper/data bs=1G count=0 seek=2000
/etc/init.d/docker start
sed -i -e '/^exec/d' -e '/^prog/aexec=\"/usr/bin/\$prog --storage-driver devicemapper --storage-opt dm.loopdatasize=2000G --storage-opt dm.loopmetadatasize=10G --storage-opt dm.fs=ext4 --storage-opt dm.basesize=40G\"' /etc/init.d/docker
if [ $? -ne 0 ];then
echo "Docker install error ,please check."
exit
fi
fi
cd /etc/sysconfig/network-scripts/
mkdir -p /data/backup/`date +%Y%m%d-%H%M`
yes|cp ifcfg-eth* /data/backup/`date +%Y%m%d-%H%M`/
if
[ -e /etc/sysconfig/network-scripts/ifcfg-br0 ];then
echo
else
cat >ifcfg-eth0 <<EOF
DEVICE=eth0
BOOTPROTO=none
${NETWORK[0]}
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
BRIDGE="br0"
${NETWORK[1]}
${NETWORK[2]}
${NETWORK[3]}
USERCTL=no
EOF
cat >ifcfg-br0 <<EOF
DEVICE="br0"
BOOTPROTO=none
${NETWORK[0]}
IPV6INIT=no
NM_CONTROLLED=no
ONBOOT=yes
TYPE="Bridge"
${NETWORK[1]}
${NETWORK[2]}
${NETWORK[3]}
USERCTL=no
EOF
/etc/init.d/network restart
fi
echo 'Your can restart Ethernet Service: /etc/init.d/network restart !'
echo '---------------------------------------------------------'
cd -
#######create docker container
service docker status >>/dev/null
if [ $? -ne 0 ];then
/etc/init.d/docker restart
fi
NAME="Docker_`echo $DOCKER_IPADDR|awk -F"." '{print $(NF-1)"_"$NF}'`"
#IMAGES=`docker p_w_picpaths|grep -v "REPOSITORY"|grep -v "none"|head -1|awk '{print $1}'`
IMAGES=`docker p_w_picpaths|grep -v "REPOSITORY"|grep -v "none"|grep "nginx"|head -1|awk '{print $1}'`
CID=$(docker run -itd --privileged --cpuset-cpus=${CPU1}-${CPU2} -m ${MEM}m --net=none --name=$NAME $IMAGES /bin/bash)
if [ -z $IMAGES ];then
echo "Plesae Download Docker Centos Images,you can to be use docker search centos,and docker pull centos6.5-ssh,exit 0"
if [ ! -f /export/jfedu_new_base_img_6.5_v83_nginx.tar ];then
echo "Please exec -it scp jfedu_new_base_img_6.5_v83_nginx.tar for docker server."
exit
fi
docker load --input /export/jfedu_new_base_img_6.5_v83_nginx.tar
fi
if [ ! -f /usr/local/bin/pipework ];then
yum install wget unzip zip -y
wget https://github.com/jpetazzo/pipework/archive/master.zip
unzip master
cp pipework-master/pipework /usr/local/bin/
chmod +x /usr/local/bin/pipework
rm -rf master
fi
ip netns >>/dev/null
if [ $? -ne 0 ];then
rpm -e iproute --nodeps
wget -c https://repos.fedorapeople.org/openstack/EOL/openstack-grizzly/epel-6/iproute-2.6.32-130.el6ost.netns.2.x86_64.rpm
rpm -ivh --nodeps --force iproute-2.6.32-130.el6ost.netns.2.x86_64.rpm
fi
pipework br0 $NAME $DOCKER_IPADDR/24@$IPADDR
docker ps -a |grep "$NAME"
if [ ! -e $LIST ];then
echo "编号,容器ID,容器名称,CPU,内存,硬盘,容器IP,宿主机IP,使用人,备注" >$LIST
fi
###################
NUM=`cat $LIST |grep -v CPU|tail -1|awk -F, '{print $1}'`
if [[ $NUM -eq "" ]];then
NUM="1"
else
NUM=`expr $NUM + 1`
fi
##################
echo -e "\033[32mCreate virtual client Successfully.\n$NUM `echo $CID|cut -b 1-12`,$NAME,$CPU1-$CPU2,${MEM}M,${DISK}G,$DOCKER_IPADDR,$IPADDR,$USER,$REMARK\033[0m"
if [ -z $USER ];then
USER="NULL"
REMARK="NULL"
fi
echo $NUM,`echo $CID|cut -b 1-12`,$NAME,$CPU1-$CPU2,${MEM}M,${DISK}G,$DOCKER_IPADDR,$IPADDR,$USER,$REMARK >>$LIST
rm -rf /root/docker_vmlist_*
iconv -c -f utf-8 -t gb2312 $LIST -o /root/docker_vmlist_`date +%H%M`.csv
脚本演示效果如下：
wKioL1ir93rhM-UoAABDH7Oy5Z8303.png
如上提示结果，有ERROR错误提示，是因为当前系统已经有重名的Docker，但是IP地址不同，可以通过修改脚本避免该问题！没有任何报错，则创建Docker成功！
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