centos65 load balancing nginx session shared redis

1. Install JDK7

1. Query the installed jdk
rpm -qa|grep jdk
2. Uninstall the installed jdk
rpm -e --nodeps *****(Query What comes out...)
3. Upload the installation file jdk-7u79-linux-x64.rpm to /usr/java
cd /usr/java
4. Install
rpm -ivh jdk-7u79-linux -x64.rpm
5. Edit profile and add the following three lines
vim /etc/profile
export JAVA_HOME=/usr/java/jdk1.7.0_79
export PATH=$PATH:$JAVA_HOME/bin:$JAVA_HOME/jre /bin
export CLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$CLASSPATH
export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL
6. Make the configuration take effect immediately
source /etc/profile

2. Install nginx

1. Create a new file
touch /etc/yum.repos.d/nginx.repo
2. Edit the new file
vim /etc/yum.repos. d/nginx.repo
3. Copy the following content into it
[nginx]
name=nginx repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=0
enabled = 1le4. Make yum -yum -yinstall nginx
5. Start nginx
service nginx start
6. Test nginx
curl 127.0.0.1


II

1. Install tcl support

yum install tcl

2. Install gcc support
yum install -y gcc g++ gcc-c++ make
3. Download redis
wget http://download.redis. io/releases/redis-2.8.16
.tar.gz
4. Unzip tar xzf redis-2.8.16.tar.gz
5. Enter the directory
cd redis-2.8.16
6 .Install
makemake test
make install
7. Edit the redis.conf file and copy it to the etc directory

vim redis.confModify daemonize no to yes
cp redis.conf /etc
8. Since startup
Enter the directory
cd /etc/init.d

Create file
touch redis
Edit file
vim redis
Copy the following content into the file, save and exit
####### ###################chkconfig: 2345 10 90
#description: Start and Stop redis
PATH=/usr/local/bin:/sbin:/usr/ bin:/bin
REDISPORT=6379
EXEC=/usr/local/bin/redis-server
REDIS_CLI=/usr/local/bin/redis-cli

PIDFILE=/var/run/redis.pid
C/ etc/redis.conf" case "$1" in
start)
if [ -f $PIDFILE ]
then
echo "$PIDFILE exists, process is already running or crashed"
else
echo "Starting Redis server... "
                       $EXEC $CONF
                                                                                                                                                             ​
stop)
if [ ! -f $PIDFILE ]
Then
echo "$ pidfile does not exist, proces is not running"
else
pid = $ (cat $ pidfile)
echo "stopping ..."
$ redis_cli -P $ Redisport Shutdown
While [-x $ {pidfile }]
Doh Echo "WAITING for Redis to Shutdown ..."
Sleep 1
Done
Echo "Redis Stopped"
fi
;;
RESTART | Force-RELOAD)
$ {0} Stop
$ {0} start
; ;;
*)
echo "Usage: /etc/init.d/redis {start|stop|restart|force-reload}" >&2
exit 1
esac
######### #####################

9. Modify permissions

chmod +x /etc/init.d/redis

10. Start redis service

service redis start



11. Enter redis-cli for testing


set redis hello,redis+OKget redis$11

hello,redis

4. nginx configuration

1. Forgot where nginx is installed
where is nginx
2. Cut to the directory
cd /etc/nginx
3. Edit the configuration file
upstream www.test.com {
ip_hash;
server localhost:8080;
server localhost:9080;
}
server {
listen 80;
server_name www.test.com;
charset utf-8;
location / {
proxy_pass http://www .test.com;
          proxy_set_header                                                                                                proxy_send 5. Modify the hosts file

vim /etc/hosts

Add

127.0.0.1 www.test.com

5. Run two tomcat configurations on the same server

1. Modify profile

vim /etc/profileAdd the following content:

CATALINA_BASE=/mnt/apache-tomcat-01

[tomcat1 path]CATALINA_HOME=/mnt/apache-tomcat-01

export CATALINA_BASE CATALINA_HOME
CATALINA_2_BASE=/mnt/apache-tomcat-02

【tomcat2 path】
CATALINA_2_HOME=/mnt/apache-tomcat-02
export CATALINA_2_BASE
TOMCAT _HOME=/mnt/apache-tomcat-01 export TOMCAT_HOME
TOMCAT_2_HOME=/mnt/apache-tomcat-02
export TOMCAT_2_HOME
2. Make the configuration take effectsource /etc/profile
3. Copy two copies of tomcat, one of which No modification is required. The other copy needs to be modified as followsModify
server.xml<Server port="9005" shutdown="SHUTDOWN">
Port: 8005->9005<Connector port="9080 " maxHttpHeaderSize="8192"
Port: 8080->9080
<Connector port="9009" Port: 8009->9009

Modify startup.sh and
shutdown.sh Add the following content
export JAVA_HOME=/usr/java/jdk1.7.0_79export ATH=$PATH:$JAVA_HOME/binexport CLASSPATH=$JAVA_HOME/lib
export CATALINA_HOME=$CATALINA_2_HOMEexport CATALINA_BASE=$CATALINA_2_BASE
6. Session sharing


Add


<Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />

<Manager className= in the content. "com.orangefunction.tomcat.redissessions.RedisSessionManager"

host="localhost"

port="6379"

database="0"

maxInactiveInterval="60" />7. Test

Create a project and output the sessionID on the pageRefresh the page, ses sionID remains unchanged, which means The configuration is successful

You can enter the redis-cli console and use keys * to see the sessionID on the page

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