keepalived+nginx+tomcat7+redis搭建高可用集群(一)
1、环境介绍
- Centos6.7 最小安装
- Keepalived-1.2.19
- Nginx-1.9.3
- Tomcat-7.0.57
- Redis-3.2.0
- Jdk1.7.0_79
- 虚拟机2台
- IP三个，分别为10.200.188.234,10.200.188.240,10.200.188.236。234和240为虚拟机ip，236为VIP
2、安装准备
测试环境是在公司内网搭建，公司网络又不好，采用默认的yum源很多包无法下载，因此采用了公司内部的yum，这里以国内阿里的yum源为例简单介绍如何替换默认的yum源。
[root@localhost bin]# cd /etc/yum.repos.d/
[root@localhost yum.repos.d]# ls
CentOS-Base.repo CentOS-Debuginfo.repo CentOS-fasttrack.repo CentOS-Media.repo CentOS-Vault.repo
[root@localhost yum.repos.d]# mv CentOS-Base.repo CentOS-Base.repo.backUp ##备份默认源
[root@localhost yum.repos.d]wget http://mirrors.aliyun.com/repo/Centos-6.repo
[root@localhost yum.repos.d]# yum clean all
[root@localhost yum.repos.d]# yum makecache由于linux采用最小安装,gcc等编译环境尚未安装
[root@localhost yum.repos.d] yum -y install gcc gcc-c++ automake autoconf libtool make3、软件安装
3.1 Jdk
[root@localhost softdir]# tar -xvf jdk1.7.0_79.tar.gz
[root@localhost softdir]# mv jdk1.7.0_79/ /usr/local/jdk7
##配置环境变量
[root@localhost local]# vim /etc/profile
#文件末尾添加如下内容
export JAVA_HOME=/usr/local/jdk7
export PATH=$PATH:$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JRE_HOME=$JAVA_HOME/jre
[root@localhost local]# source /etc/profile
[root@localhost local]# java -version
java version "1.7.0_79"
Java(TM) SE Runtime Environment (build 1.7.0_79-b15)
Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode)
3.2 Tomcat
[root@localhost softdir]# tar -xvf tomcat-7.0.57.tar.gz
[root@localhost softdir]# mv tomcat-7.0.57 /usr/local/tomcat7
##配置服务启动
[root@localhost local]# cd /etc/init.d/
[root@localhost init.d]# vim tomcat
1 #!/bin/bash
2 # description:Tomcat7 start stop restart
3 # processname:tomcat7
4 # chkconfig:234 20 80
5
6 JAVA_HOME=/usr/local/jdk7
7 export JAVA_HOME
8 export PATH=$PATH:$JAVA_HOME/bin:$PATH
9 CATALINA_HOME=/usr/local/tomcat7
10
11 case $1 in
12 start)
13 sh $CATALINA_HOME/bin/startup.sh
14 ;;
15 stop)
16 sh $CATALINA_HOME/bin/shutdown.sh
17 ;;
18 restart)
19 sh $CATALINA_HOME/bin/shutdown.sh
20 sh $CATALINA_HOME/bin/startup.sh
21 ;;
22 esac
23 exit 0
#：wq保存退出
[root@localhost init.d]# chkconfig --add tomcat
[root@localhost init.d]# service tomcat start
Using CATALINA_BASE: /usr/local/tomcat7
Using CATALINA_HOME: /usr/local/tomcat7
Using CATALINA_TMPDIR: /usr/local/tomcat7/temp
Using JRE_HOME: /usr/local/jdk7/jre
Using CLASSPATH: .:/usr/local/jdk/lib/dt.jar:/usr/local/java/lib/tools.jar:/usr/local/tomcat7/bin/bootstrap.jar:/usr/local/tomcat7/bin/tomcat-juli.jar
Tomcat started.3.3 Nginx
所需软件:pcre-8.36.tar.gzzlib-1.2.8.tar.gzopenssl-1.0.1c.tar.gznginx_upstream_check_module-master.tar.gznginx-1.9.3.tar.gz#pcre install
[root@localhost softdir]# tar -xvf pcre-8.36.tar.gz
[root@localhost softdir]# cd pcre-8.36
[root@localhost pcre-8.36]# ./configure
[root@localhost pcre-8.36]# make && make install
#zlib install
[root@localhost pcre-8.36]# cd ..
[root@localhost softdir]# tar zlib-1.2.8.tar.gz
[root@localhost softdir]# cd zlib-1.2.8
[root@localhost zlib-1.2.8]# ./configure
[root@localhost zlib-1.2.8]# make && make install
#openssl
[root@localhost zlib-1.2.8]# cd ..
[root@localhost softdir]# tar -xvf openssl-1.0.1c.tar.gz
[root@localhost softdir]# cd openssl-1.0.1c
[root@localhost openssl-1.0.1c]# ./configure
[root@localhost openssl-1.0.1c]# make && make install
#nginx
[root@localhost softdir]# tar -xvf nginx-1.9.3.tar.gz
[root@localhost softdir]# cd nginx-1.9.3
[root@localhost softdir]# ./configure --prefix=/usr/local/nginx \
--with-http_ssl_module \
--with-http_gzip_static_module \
--with-pcre=/usr/local/softdir/pcre-8.36 \
--with-zlib=/usr/local/softdir/zlib-1.2.8 \
--with-openssl=/usr/local/softdir/openssl-1.0.1c \
--with-http_stub_status_module \
--with-http_realip_module \
--add-module=/usr/local/softdir/nginx_upstream_check_module ##直接解压即可
[root@localhost nginx-1.9.3]# make && make install
[root@localhost softdir]# cd /usr/local/nginx/sbin
[root@localhost sbin]# ./nginx #启动服务
#也可以配置到 service启动 ,这里就不介绍了,只是简单的将sbin加入PATH
[root@localhost sbin]# vim /etc/profile
#末尾加上
export PATH=$PATH:/usr/local/nginx/sbin
[root@localhost sbin]# source /etc/profile3.4 Redis
所需软件：tcl-8.5.7-6.el6.x86_64.rpm、redis-3.2.0.tar.gz
[root@localhost sbin]# yum -y install tcl-8.5.7-6
[root@localhost softdir]# tar -xvf redis-3.2.0.tar.gz
[root@localhost softdir]# cd redis-3.2.0
[root@localhost redis-3.2.0]# make test
[root@localhost redis-3.2.0]# make MALLOC=libc
[root@localhost redis-3.2.0]# make PREFIX=/usr/local/redis install## 配置redis服务启动
[root@localhost redis-3.2.0]# mkdir /etc/redis
## redis启动配置文件
[root@localhost redis-3.2.0]# cp redis.conf /etc/redis/redis-6379.conf
## utils是在redis安装目录下
[root@localhost utils]# cp redis_init_script /etc/init.d/redis-6379
[root@localhost utils]# vim /etc/init.d/redis-6379
1 #!/bin/sh
2 # chkconfig:2345 80 90
3 # Simple Redis init.d script conceived to work on Linux systems
4 # as it does use of the /proc filesystem.
5
6 REDISPORT=6379
7 EXEC=/usr/local/redis/bin/redis-server
8 CLIEXEC=/usr/local/redis/bin/redis-cli
9
10 PIDFILE=/var/run/redis_${REDISPORT}.pid
11 CONF="/etc/redis/redis-${REDISPORT}.conf"
12
13 case "$1" in
14 start)
15 if [ -f $PIDFILE ]
16 then
17 echo "$PIDFILE exists, process is already running or crashed"
18 else
19 echo "Starting Redis server..."
20 $EXEC $CONF &
21 fi
22 ;;
23 stop)
24 if [ ! -f $PIDFILE ]
25 then
26 echo "$PIDFILE does not exist, process is not running"
27 else
28 PID=$(cat $PIDFILE)
29 echo "Stopping ..."
30 $CLIEXEC -p $REDISPORT -a "123456" shutdown
31 while [ -x /proc/${PID} ]
32 do
33 echo "Waiting for Redis to shutdown ..."
34 sleep 1
35 done
36 echo "Redis stopped"
37 fi
38 ;;
39 *)
40 echo "Please use start or stop as first argument"
41 ;;
42 esac
[root@localhost init.d]# chkconfig --add redis-6379
##启动服务
[root@localhost init.d]# service redis-6379 start3.5 Keepalived
所需软件：Keepalived-1.2.19.tar.gz，依赖包：
openssl、popt-devel
[root@localhost softdir]# yum -y install openssl
[root@localhost softdir]# yum -y install popt-devel
[root@localhost softdir]# tar -xvf keepalived-1.2.19.tar.gz
[root@localhost softdir]# cd keepalived-1.2.19
[root@localhost keepalived-1.2.19]# ./configure --prefix=/usr/local/keepalived
[root@localhost keepalived-1.2.19]# make && make install
[root@localhost keepalived-1.2.19]# mkdir /etc/keepalived
[root@localhost keepalived-1.2.19] cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
[root@localhost keepalived-1.2.19] cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
[root@localhost keepalived-1.2.19] cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/
[root@localhost keepalived-1.2.19] cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/