Nginx+tomcat7+redis for session sharing (single-point Redis)

This article mainly introduces the installation and configuration of Redis, Nginx and Tomcat have written a very detailed document, please refer to: http://francis905.blog.51cto.com/3048056/1716740

Lab Environment: 3 virtual machines (pc1:nginx1.6.3,pc2:tomcat7+redis2.6.13,pc3:tomcat7+redis2.6.13)

Experiment Objective: To realize session sharing through Redis

[Note] Brown is an extension of other materials that must be done

Cd/usr/local/src

Tar zxvf redis-2.6.13.tar.gz

CD redis-2.6.13

Make Prefix=/usr/local/redis Install

If make fails, the GCC is not installed in your system. Yum install-y gcc

After successful installation,/usr/loca/redis/bin will have these 5 files

[Email protected] redis-2.6.13]# ls/usr/local/redis/bin/

Redis-benchmark redis-check-aof redis-check-dump redis-cli redis-server

Redis-server:redis Server Daemon Startup program

Redis-cli:redis command-line operation tool. Of course, you can also use Telnet to operate on its plain text protocol.

Redis-benchmark:redis Performance testing tools to test the read and write performance of Redis in your system and in your configuration

REDIS-CHECK-AOF: Data Repair

Redis-check-dump: Check the Export tool

Here, if you do not start the script can be started directly:/usr/loca/redis/bin/redis-server

Cp/usr/local/src/redis-2.6.13/utils/redis_init_script/etc/init.d/redis//Copy startup script

[Email protected] redis-2.6.13]# chkconfig--add Redis

Redis service does not support Chkconfig

Vim/etc/init.d/redis

..................................................................................

#!/bin/sh

# chkconfig:2345 80 90//Resolution service does not support chkconfig issues

# simple Redis INIT.D script conceived to work on Linux systems

# as it does use of the/proc filesystem.

redisport=6379

Exec=/usr/local/redis/bin/redis-server//modify Path

CLIEXEC=/USR/LOCAL/REDIS/BIN/REDIS-CLI//modify Path

Pidfile=/var/run/redis_${redisport}.pid

conf= "/etc/redis/${redisport}.conf"

Case "$" in

Start

If [-F $PIDFILE]

Then

echo "$PIDFILE exists, process is already running or crashed"

Else

echo "Starting Redis server ..."

$EXEC $CONF &//Join & perform in the background

Fi

;;

Stop

if [!-F $PIDFILE]

Then

echo "$PIDFILE does not exist, process was not running"

Else

pid=$ (Cat $PIDFILE)

echo "Stopping ..."

$CLIEXEC-P $REDISPORT shutdown

While [-x/proc/${pid}]

Do

echo "Waiting for Redis to shutdown ..."

Sleep 1

Done

echo "Redis stopped"

Fi

;;

*)

echo "Please use Start or stop as first argument"

;;

Esac

..................................................................................

Copy the Redis configuration file to/etc/redis/${redisport}. conf

Mkdir/etc/redis

cp/usr/local/src/redis-2.6.13/redis.conf/etc/redis/6379. conf

Parse the configuration file that needs to define Redis yourself

mkdir/usr/local/redis/etc/

mkdir/usr/local/redis/var/

Vim/usr/local/redis/etc/redis.conf

.............................................................

Daemonize Yes

Pidfile/usr/local/redis/var/redis.pid

Port 6379

Timeout 300

LogLevel Debug

Logfile/usr/local/redis/var/redis.log

Databases 16

Save 900 1

Save 300 10

Save 60 10000

Rdbcompression Yes

Dbfilename Dump.rdb

dir/usr/local/redis/var/

AppendOnly No

Appendfsync always

.............................................................

Specify the configuration file when starting/usr/local/redis/bin/redis-server/usr/loca/redis/etc/redis.conf

conf the meaning of the main configuration parameters:

Daemonize: Whether to run daemon mode later

Pidfile:pid File Location

Port: Port number for listening

Timeout: Request time-out

Loglevel:log Information level

Logfile:log File Location

Databases: number of open databases

Save *: How often the snapshot is saved, the first * indicates how long, and the third * indicates how many times the write operation is performed. Snapshots are automatically saved when a certain number of writes are performed within a certain amount of time. You can set multiple conditions.

Rdbcompression: Whether to use compression

Dbfilename: Data Snapshot file name (only file name, excluding directory)

Dir: Save directory for Data snapshot (this is the directory)

AppendOnly: If the appendonlylog is turned on, each write will record a log, which will improve the data anti-risk ability, but affect the efficiency.

Appendfsync:appendonlylog How to sync to disk (three options, each write is forced to call Fsync, Fsync per second, do not call Fsync wait for the system to synchronize itself)

Chkconfig--add Redis

Chkconfig Redis on

Service Redis Start

Add the directory of the Redis command to the system parameter path

Vim/etc/profile

Export path= "$PATH:/usr/local/redis/bin"

Source/etc/profile

Start Redis

/usr/local/redis/bin/redis-server/usr/local/redis/etc/redis.conf

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Turn off Redis

REDIS-CLI shutdown

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Call the REDIS-CLI command test

[Email protected] redis-2.6.13]# REDIS-CLI

Redis 127.0.0.1:6379> Auth nihao123! Added validation to users

Ok

Redis 127.0.0.1:6379> Ping

PONG

Redis 127.0.0.1:6379> set foo bar

Ok

Redis 127.0.0.1:6379> get foo

"Bar"

Redis 127.0.0.1:6379> Keys "*"//See the session Information experiment results can be used for this test

2 ways to add user authentication to Redis

1. Modify the configuration file redis.conf

Vim/etc/redis/6379.conf

260 Requirepass nihao123! 260 refers to the line number

Service Redis Stop;start

2, through the Config command can set the password and get the current user password

1. Redis 127.0.0.1:6379[1]> Config set requirepass 123456

2. OK

3. Redis 127.0.0.1:6379[1]> config get requirepass

4.1) "Requirepass"

5.2) "123456"

[Note:] After setting the authentication password, the Redis service shutdown requires password verification before it can be closed, so the command is modified to:

Redis-cli–a 123456 shutdown

PS: Redis does not support TOMCAT8 until 2015-05-12, for details see official website: Https://github.com/jcoleman/tomcat-redis-session-manager

Configure the Context.xml file under the Conf directory for Tomcat:

1> Single Point Reids configuration

<!--

Jedis Save Session

-

<valve classname= "Com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve"/>

<manager classname= "Com.orangefunction.tomcat.redissessions.RedisSessionManager"

host= "localhost"//fill in the IP you want to designate as the Redis service

Port= "6379"

database= "0"

Maxinactiveinterval= "/>"

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2> Sentinel Cluster Configuration:

<!--Sentinel Configuration--

<valve classname= "Com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve"/>

<manager classname= "Com.orangefunction.tomcat.redissessions.RedisSessionManager"

Maxinactiveinterval= "60"

Sentinelmaster= "MyMaster"

Sentinels= "127.0.0.1:26379,127.0.0.1:26380,127.0.0.1:26381,127.0.0.1:26382"

/>

#集群配置没验证 follow-up documentation will do this.

[Note]: The session persistence setting is turned on by default from Tomcat6, the local session persistence can be turned off during the test, and in the Context.xml file under Tomcat's Conf directory, uncomment the following configuration:

<!--uncomment this to disable session persistence across Tomcat restarts-

<!--

<manager pathname= ""/>

-

Redis Exception Resolution: Jedis.exceptions.JedisDataException:ERR Client sent AUTH, but no password is set

Redis sets the access password through the property Requirepass, but when the client sends a AUTH request to the server, the service side returns the exception: ERR Client sent AUTH, but no password is set Comment out the Redis configuration file Requirepass.

Tomcat to easily see test results, write a new Java code

vim/usr/local/tomcat7/webapps/root/index.jsp

.........................................................................

<%@ page language= "java"%>

<body>

<table align= "centre" border= "1" >

<tr>

<td>session id</td>

<td><%= Session.getid ()%></td>

</tr>

<tr>

<td>created on</td>

<td><%= session.getcreationtime ()%></td>

</tr>

</table>

</body>

Sessionid:<%=session.getid ()%>

<br>

Sessionip:<%=request.getservername ()%>

<br>

Sessionport:<%=request.getserverport ()%>

<%

Out.println ("This tomcat server is 192.168.3.12");

%>

.........................................................................

#两台tomcat都是如此,, in order to differentiate the last IP address to modify their own

Configure Nginx Reverse proxy, refer to the URL mentioned at the beginning

Start Redis, Tomcat, Nginx

You can see the effect:

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This article is from the "Rookie Growth Road" blog, please be sure to keep this source http://francis905.blog.51cto.com/3048056/1720693

Nginx+tomcat7+redis for session sharing (single-point Redis)