Build jeesz distributed architecture-Redis distributed cache installation (single node)
Installation environment: CentOS 6.6
Redis version: redis-3.0 (because of Redis3.0 's features in clustering and performance improvement, rc version is a candidate for the official version. Please go to the official website to choose the latest version during installation)
User: root
Installation directory: / usr/local/redis
Let's make a detailed record of the Redis installation:
Compile and install the required packages:
# yum install gcc tcl
Reminder: download version 3.0 of Redis (the latest version of redis-3.0.0-rc5.tar.gz, please go to the official website to choose the latest version during installation)
# cd / usr/local/src
# wget https://github.com/antirez/redis/archive/3.0.0-rc5.tar.gz
Reminder: you can download the directory copy through the official website.
Create the installation directory:
# mkdir / usr/local/redis
Decompress:
# tar-zxvf 3.0.0-rc5.tar.gz
# mv redis-3.0.0-rc5 redis3.0
# cd redis3.0
Install (use PREFIX to specify the installation directory):
# make PREFIX=/usr/local/redis install
After the installation is complete, you can see that there is a bin directory in the / usr/local/redis directory, and in the bin directory is the command script for redis:
Redis-benchmark redis-check-aof redis-check-dumpredis-cli redis-server
Configure redis as a service:
According to the above steps, the startup script for Redis is: / usr/local/src/redis3.0/utils/redis_init_script
Copy the startup script to the / etc/rc.d/init.d/ directory and name it redis
# cp / usr/local/src/redis3.0/utils/redis_init_script/etc/rc.d/init.d/redis
Edit / etc/rc.d/init.d/redis and modify the configuration so that it can register as a service:
# vi/etc/rc.d/init.d/redis
#! / bin/sh
#
# Simple Redis init.d script conceived to work on Linux systems
# as it does use of the / proc filesystem.
REDISPORT=6379
EXEC=/usr/local/bin/redis-server
CLIEXEC=/usr/local/bin/redis-cli
PIDFILE=/var/run/redis_$ {REDISPORT} .pid
CONF= "/ etc/redis/$ {REDISPORT} .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
Fi
Stop)
If [!-f $PIDFILE]
Then
Echo "$PIDFILE does not exist, process is 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
Take a look at the above redis service script, focus on the attributes marked orange, and prepare for the following changes:
(1) add a line after the first line of the script as follows:
# chkconfig: 2345 80 90
Reminder: if you do not add the above, you will be prompted when registering for the service: service redis does not support chkconfig
(2) the REDISPORT port remains unchanged at 6379; (special note: the port name will be related to the following configuration file name)
(3) change EXEC=/usr/local/bin/redis-server to EXEC=/usr/local/redis/bin/redis-server
(4) change CLIEXEC=/usr/local/bin/redis-cli to CLIEXEC=/usr/local/redis/bin/redis-cli
(5) configuration file settings:
Create a redis profile directory
# mkdir / usr/local/redis/conf
Copy the redis configuration file / usr/local/src/redis3.0/redis.conf to the / usr/local/redis/conf directory and rename it to 6379.conf by port number
# cp / usr/local/src/redis3.0/redis.conf/usr/local/redis/conf/6379.conf
After making the above preparations, make the following adjustments to the CONF property:
Change CONF= "/ etc/redis/$ {REDISPORT} .conf" to CONF= "/ usr/local/redis/conf/$ {REDISPORT} .conf"
(6) change the command enabled by redis and execute it in the way of running in the background:
The function of $EXEC $CONF & # "&" is to transfer the service to run later.
The modified / etc/rc.d/init.d/redis service script is as follows:
#! / bin/sh
# chkconfig: 2345 80 90
#
# Simple Redis init.d script conceived to work on Linux systems
# as it does use of the / proc filesystem.
REDISPORT=6379
EXEC=/usr/local/redis/bin/redis-server
CLIEXEC=/usr/local/redis/bin/redis-cli
PIDFILE=/var/run/redis_$ {REDISPORT} .pid
CONF= "/ usr/local/redis/conf/$ {REDISPORT} .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 &
Fi
Stop)
If [!-f $PIDFILE]
Then
Echo "$PIDFILE does not exist, process is 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
After the above configuration operations are completed, Redis can be registered as a service:
# chkconfig-add redis
Open the corresponding port in the firewall
# vi / etc/sysconfig/iptables
Add:
-An INPUT-m state-- state NEW-m tcp-p tcp-- dport6379-j ACCEPT
Restart the firewall:
# service iptables restart
Modify the redis profile settings:
# vi / usr/local/redis/conf/6379.conf
Modify the configuration as follows
Change daemonize no to daemonize yes
Note: if you do not change to yes,pid file will not be generated, start, stop commands will not take effect (dependent on pid file)
Change pidfile / var/run/redis.pid to pidfile / var/run/redis_6379.pid
Start the Redis service
# service redis start
Add Redis to the environment variable:
# vi / etc/profile
Add the following at the end:
# # Redis env
Export PATH=$PATH:/usr/local/redis/bin
To make the configuration effective:
# source / etc/profile
Currently, you can directly use redis commands such as redis-cli:
# redis-cli
Turn off the Redis service
# service redis stop
Reminder: by default, Redis enables security authentication, and you can specify one through the requirepass of / usr/local/redis/conf/6379.conf
Verify password
Friends who are willing to know the framework technology or source code directly add QQ (2042849237)
More details of the source code reference source: click to open the website source source
