Detailed methods for CentOS 7.x installation and deployment of Memcached server

Operating system: CentOS 7.x 64 bit

Achieve purpose: install and deploy Memcached server

I. Firewall settings

CentOS 7.x uses firewall as the firewall by default, which is changed to iptables firewall here.

1. Close firewall:

Systemctl stop firewalld.service # stop firewall

Systemctl disable firewalld.service # prevents firewall from booting

2. Install iptables firewall

Yum install iptables-services # installation

Vi / etc/sysconfig/iptables # Editing Firewall profile

# sample configuration for iptables service

# you can edit this manually or use system-config-firewall

# please do not ask us to add additional ports/services to this default configuration

* filter

: INPUT ACCEPT [0:0]

: FORWARD ACCEPT [0:0]

: OUTPUT ACCEPT [0:0]

-An INPUT-m state-- state RELATED,ESTABLISHED-j ACCEPT

-An INPUT-p icmp-j ACCEPT

-An INPUT-I lo-j ACCEPT

-An INPUT-p tcp-m state-- state NEW-m tcp-- dport 22-j ACCEPT

-An INPUT-p tcp-m state-- state NEW-m tcp-- dport 11211-j ACCEPT

-An INPUT-j REJECT-- reject-with icmp-host-prohibited

-A FORWARD-j REJECT-- reject-with icmp-host-prohibited

COMMIT

: wq! # Save exit

Systemctl restart iptables.service # finally restart the firewall to make the configuration effective

Systemctl enable iptables.service # set the firewall to boot

/ usr/libexec/iptables/iptables.init restart # restart the firewall

2. Close SELINUX

Vi / etc/selinux/config

# SELINUX=enforcing # comment out

# SELINUXTYPE=targeted # comment out

SELINUX=disabled # increased

: wq! # Save exit

Setenforce 0 # makes the configuration effective immediately

III. System agreement

Software source code package location: / usr/local/src

Source package compilation installation location: / usr/local/ software name

Download the software package

1. Download libevent

Http://ftp.lfs-matrix.net/pub/blfs/conglomeration/libevent/libevent-2.0.22-stable.tar.gz

2. Download memcached

Http://memcached.org/files/memcached-1.4.34.tar.gz

Fifth, install the compilation kit

Yum install-y apr* autoconf automake bison bzip2 bzip2* cloog-ppl compat* cpp curl curl-devel fontconfig fontconfig-devel freetype freetype* freetype-devel gcc gcc-c++ gtk+-devel gd gettext gettext-devel glibc kernel kernel-headers keyutils keyutils-libs-devel krb5-devel libcom_err-devel libpng libpng-devel libjpeg* libsepol-devel libselinux-devel libstdc++-devel libtool* libgomp libxml2 libxml2-devel libXpm* libxml* libtiff libtiff* make mpfr ncurses* ntp openssl openssl-devel patch pcre-devel perl php-common php-gd policycoreutils telnet t1lib t1lib * nasm nasm* wget zlib-devel

6. Install and configure memcached

1. Install libevent

Cd / usr/local/src

Tar zxvf libevent-2.0.22-stable.tar.gz

Cd libevent-2.0.22-stable

. / configure-- prefix=/usr/local/libevent

Make

Make install

2. Install memcached

Cd / usr/local/src

Tar zxvf memcached-1.4.34.tar.gz

Cd memcached-1.4.34

. / configure-- enable-sasl-- prefix=/usr/local/memcached-with-libevent=/usr/local/libevent

Make

Make install

3. Test Memcached

Groupadd memcached # create a group

Useradd-g memcached memcached-s / bin/false # create an account

Ln-s / usr/local/memcached/bin/memcached / usr/local/bin/memcached # add soft connection

The command on the server side that starts Memcache is:

/ usr/local/memcached/bin/memcached-d-m 4096-u root-l 192.168.4.6-p 11211-c 1024-P / usr/local/memcached/memcached.pid

Or

/ usr/local/memcached/bin/memcached-d-m 4096-u memcached-l 192.168.4.6-p 11211-c 1024

Parameter description:

The-d option is to start a daemon

-m is the amount of memory allocated to Memcache, in MB, here is 4096MB

-u is the user running Memcache, such as root or memcached

-l is the IP address of the listening server. The IP address of the server is specified here, and all IP addresses of the default listening server are not set.

-p is the port on which Memcache snooping is set. Default is 11211.

The-c option is the maximum number of concurrent connections running. The default is 1024.

-P is the pid file set to save Memcache, / usr/local/memcached/memcached.pid

Boot automatically, add a line in / etc/rc.d/rc.local

/ usr/local/memcached/bin/memcached-d-m 4096-u root-l 192.168.4.6-p 11211-c 1024-P / usr/local/memcached/memcached.pid

You can also use the following command:

/ usr/local/memcached/bin/memcached-d-m 4096-p 11211-u memcached

When ip is not specified, all local ip addresses are listened to by default. Users had better choose non-root users, such as memcached.

Turn off the Memcached service

Cat / usr/local/memcached/memcached.pid # View process

Kill 22856 # end the process

Or

Killall memcached # end of service

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4. Set Memcached to boot.

Vi / etc/rc.d/init.d/memcached

#! / bin/sh

#

# memcached: MemCached Daemon

#

# chkconfig:-90 25

# description: MemCached Daemon

#

# Source function library.

. / etc/rc.d/init.d/functions

. / etc/sysconfig/network

MEMCACHED= "/ usr/local/memcached/bin/memcached"

Start ()

{

Echo-n $"Starting memcached:"

Daemon $MEMCACHED-u memcached-d-m 4096-p 11211-c 1024

Echo

}

Stop ()

{

Echo-n $"Shutting down memcached:"

Killproc memcached

Echo

}

[- f $MEMCACHED] | | exit 0

# See how we were called.

Case "$1" in

Start)

Start

Stop)

Stop

Restart | reload)

Stop

Start

Condrestart)

Stop

Start

*)

Echo $"Usage: $0 {start | stop | restart | reload | condrestart}"

Exit 1

Esac

Exit 0

: wq! # Save exit

Chmod 775 / etc/rc.d/init.d/memcached # gives file execution permissions

Chkconfig memcached on # set boot up

/ etc/rc.d/init.d/memcached start # launch

At this point, the deployment of Memcached server under Linux is complete.