load balancer docker解决方案

zhu894532094

　　一.gbalancer_keepalived image创建和container创建
　　1.gbalancer_keepalived Dockerfile:

FROM letv:centos6 MAINTAINER yaofaliang RUN rpm -ivh http://pkg-repo.oss.letv.com/pkgs/centos6/letv-release.noarch.rpm RUN yum install cronie -y RUN yum install vim -y RUN yum install gbalancer -y RUN yum install keepalived -y EXPOSE 80 8000 2222 3333 USER root ADD ./init/init.sh /srv/mcluster/init/init.sh RUN chmod 755 /srv/mcluster/init/init.sh ENTRYPOINT /srv/mcluster/init/init.sh && /bin/bash

　　
　　2.在init目录下创建初始化脚本init.sh，内容如下：

cat > /etc/sysconfig/network-scripts/ifcfg-peth0 > /var/log/gbalancer.log       exit 1    fi    fi

　　
　　i.添加gbalancer的系统启动脚本

#!/bin/bash # # Description:  This shell script takes care of starting and stopping dennis # Hu Dennis created on Sep. 24th, 2010 # # Source function library . /etc/init.d/functions     #the service name  for example: dennis SNAME=gbalancer     #the full path and name of the daemon program #Warning: The name of executable file must be identical with service name PROG() {      /usr/bin/gbalancer --config=/etc/gbalancer/configuration.json &>/dev/null & }     kill_gbalancer() {     kill -9 `ps -ef | grep -v "grep" | grep "/usr/bin/gbalancer --config=/etc/gbalancer/configuration.json" | awk '{print $2}'` &>/dev/null }     # start function start() {     #check the daemon status first     if [ -f /var/lock/subsys/$SNAME ]     then         echo "$SNAME is already started!"         exit 0;     else         action "Starting $SNAME ..." PROG         [ $? -eq 0 ] && touch /var/lock/subsys/$SNAME         exit 0;     fi }     #stop function stop() {     echo -n "Stopping $SNAME ..."     kill_gbalancer     success     echo     rm -rf /var/lock/subsys/$SNAME }     case "$1" in start)   start   ;; stop)   stop   ;; reload|restart)   stop   start   ;; status)   status $SNAME   ;; *)   echo $"Usage: $0 {start|stop|restart|status}"   exit 1 esac

　　
　　g.启动keepalived和gbalancer服务：

service gbalancer start service keepalived start

　　k .通过vip访问webportal admin和webportal app查看是否可以提供服务。