编写SHELL脚本，自动实现Docker虚拟机分配，并且指定Docker CPU、内存、硬盘大小；
[code]
#!/bin/bash
#auto install docker and Create VM
#by wugk 2016-01-05
#Define PATH Varablies
IPADDR=`ifconfig |grep “broadcast”|awk ‘{print $2}’|cut -d: -f2|grep “192.168”|head -1`
GATEWAY=`route -n|grep “UG”|awk ‘{print $2}’|grep “192.168”|head -1`
DOCKER_IPADDR=$1
IPADDR_NET=`ifconfig |grep “broadcast”|awk ‘{print $2}’|cut -d: -f2|grep “192.168”|head -1|awk -F. ‘{print $1″.”$2″.”$3″.””xxx”}’`
#HWADDR=`ifconfig ens33 |egrep “HWaddr|broadcast” |tr “\n” ” “|awk ‘{print $5,$7,$NF}’|sed -e ‘s/addr://g’ -e ‘s/Mask://g’|awk ‘{print $1}’`
NETWORK=(
IPADDR=`ifconfig ens33 |egrep “HWaddr|broadcast” |awk ‘{print $2}’`
NETMASK=`ifconfig ens33 |egrep “HWaddr|broadcast” |tr “\n” ” “|awk ‘{print $4}’`
GATEWAY=`route -n|grep “UG”|awk ‘{print $2}’`
)
if [ -z “$1” -o -z “$2” -o -z “$3” -o -z “$4” ];then
echo -e “\033[32m———————————\033[0m”
echo -e “\033[32mPlease exec $0 IPADDR CPU(C) MEM(G) DISK(G),example $0 $IPADDR_NET 16 32 50\033[0m”
exit 0
fi
CPU=`expr $2 – 1`
if [ ! -e /usr/bin/bc ];then
yum install bc -y >>/dev/null 2>&1
fi
MEM_F=`echo $3 \* 1024|bc`
MEM=`printf “%.0f\n” $MEM_F`
DISK=$4
USER=$5
REMARK=$6
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 /lib/systemd/system/docker.service ];then
# 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
yum install docker -y
service docker start
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-ens33 /data/backup/`date +%Y%m%d-%H%M`/
if
[ -e /etc/sysconfig/network-scripts/ifcfg-br0 ];then
echo
else
cat >ifcfg-ens33 <<EOF
DEVICE=ens33
ONBOOT=yes
TYPE=Ethernet
BRIDGE=”br0″
EOF
cat >ifcfg-br0 <<EOF
DEVICE=”br0″
BOOTPROTO=static
${NETWORK[0]}
ONBOOT=yes
TYPE=”Bridge”
${NETWORK[1]}
${NETWORK[2]}
${NETWORK[3]}
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
service docker restart
fi
NAME=”Docker$$_`echo $DOCKER_IPADDR|awk -F”.” ‘{print $(NF-1)”_”$NF}’`”
IMAGES=`docker images|grep -v “REPOSITORY”|grep -v “none”|head -1|awk ‘{print $1}’`
CID=$(docker run -itd –cpuset-cpus=0-$CPU -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”
exit 0
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
rpm -ivh https://repos.fedorapeople.org/openstack/EOL/openstack-grizzly/epel-6/iproute-2.6.32-130.el6ost.netns.2.x86_64.rpm
fi
pipework br0 $NAME $DOCKER_IPADDR/24@$IPADDR
docker ps -a |grep “$NAME”
DEV=$(basename $(echo /dev/mapper/docker-*-$CID))
dmsetup table $DEV | sed “s/0 [0-9]* thin/0 $((${DISK}*1024*1024*1024/512)) thin/” | dmsetup load $DEV
dmsetup resume $DEV
resize2fs /dev/mapper/$DEV
docker start $CID
docker logs $CID
LIST=”docker_vmlist.csv”
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 docker_vmlist.csv |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 $2C ${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,${2}C,${MEM}M,${DISK}G,$DOCKER_IPADDR,$IPADDR,$USER,$REMARK >>$LIST
rm -rf docker_vmlist_*
iconv -c -f utf-8 -t gb2312 docker_vmlist.csv -o docker_vmlist_`date +%H%M`.csv
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