Installation and use of Redis

The demo sample recommended by Redis can be referenced in this course, "Dubbo-based Distributed system architecture Combat"

IP : 192.168.4.111

Environment: CentOS 6.6

Redis version: redis-3.0 (due to Redis3.0 's features in clustering and performance improvement, RC version is a candidate version of the official version, and will be released soon)

Installation directory:/usr/local/redis

User: Root

To compile and install the required packages:

# yum Install gcc tcl

Download Redis version 3.0 (currently the latest version of redis-3.0.0-rc5.tar.gz, please choose the most recent edition of the students at the time of installation)

# CD/USR/LOCAL/SRC

# wget https://github.com/antirez/redis/archive/3.0.0-rc5.tar.gz

To create the installation directory:

# Mkdir/usr/local/redis

Extract:

# TAR-ZXVF 3.0.0-rc5.tar.gz

# MV Redis-3.0.0-rc5 redis3.0

# CD redis3.0

Install (using prefix to specify the installation directory):

# Make Prefix=/usr/local/redis Install

After the installation is complete, you can see a bin directory under the/usr/local/redis directory, which is the Redis command script in the bin directory:

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

To configure Redis as a service:

By following the steps above, the Redis startup script 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 the/etc/rc.d/init.d/redis, modify the configuration so that it can be registered 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 "$" 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 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

Look at the Redis service script above and look at several attributes labeled orange to prepare for the following modifications:

(1) Add a line after the first line of the script as follows:

#chkconfig: 2345 80 90

(If you do not add the above, you will be prompted when registering the service: Service Redis does not support Chkconfig)

(2) The Redisport port remains 6379 unchanged; (Note that the port name is related to the following profile name)

(3) Exec=/usr/local/bin/redis-server changed to Exec=/usr/local/redis/bin/redis-server

(4) CLIEXEC=/USR/LOCAL/BIN/REDIS-CLI changed 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 profile/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 you have made the above preparations, make the following adjustments to the Conf attribute:

conf= "/etc/redis/${redisport}.conf" changed to conf= "/usr/local/redis/conf/${redisport}.conf"

(6) Change the Redis Open command to run in the background:

$EXEC $CONF & # "&" function is to move the service back to run

The contents of the modified/etc/rc.d/init.d/redis service script are:

#!/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 "$" 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 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

Once the above configuration operation is complete, you can register Redis as a service:

# chkconfig--add Redis

Open the corresponding port in the firewall

# Vi/etc/sysconfig/iptables

Add to:

-A input-m state--state new-m tcp-p TCP--dport 6379-j ACCEPT

To restart the firewall:

# Service Iptables Restart

To modify Redis configuration file settings:

# vi/usr/local/redis/conf/6379.conf

Modify the following configuration

Daemonize no change to > Daemonize Yes

Pidfile/var/run/redis.pid instead of > Pidfile/var/run/redis_6379.pid

Start Redis Service

# service Redis Start

To add Redis to an environment variable:

# Vi/etc/profile

At the end, add the following:

# # Redis Env

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

To make the configuration effective:

# Source/etc/profile

Redis commands such as REDIS-CLI can now be used directly:

Turn off Redis Services

# Service Redis Stop

By default, Redis turns on secure authentication, and you can specify a verification password through/usr/local/redis/conf/6379.conf's requirepass.

Installation and use of Redis