Memcached服务安装
简介：Memcached 是一个高性能的分布式内存对象缓存系统，用于动态Web应用以减轻数据库负载。它通过在内存中缓存数据和对象来减少读取数据库的次数，从而提高动态、数据库驱动网站的速度。Memcached基于一个存储键/值对的hashmap。其守护进程（daemon ）是用C写的，但是客户端可以用任何语言来编写，并通过memcached协议与守护进程通信。
特点：
memcached作为高速运行的分布式缓存服务器，具有以下的特点。
· 协议简单
· 基于libevent的事件处理
· 内置内存存储方式
· memcached不互相通信的分布式
http://i2.运维网.com/images/blog/201809/21/024f67cb2aa3820f675be25486c31121.jpeg
具体实验：
实验环境：两台CentOS7.3系统完成（一台Memcached服务器，一台基于LAMP架构进行的Memcached API客户端）
Memcached服务器 IP：192.168.120.128
Memcached API客户端IP：192.168.120.135
**实验所需软件包：**
Memcached压缩包链接：https://pan.baidu.com/s/1pekiFGA0rv3XyM7KY58jUA
提取码：6uff
=========================memcached服务器端========================
# mkdir /abc
# mount.cifs //192.168.100.10/rhel7 /abc
Password for root@//192.168.100.10/rhel7:
# cd /abc/memcached/
# tar zxvf libevent-2.1.8-stable.tar.gz -C /opt/
# tar zxvf memcached-1.5.6.tar.gz -C /opt/
# cd /opt/
# yum install gcc gcc-c++ make -y
# cd libevent-2.1.8-stable/
# ./configure --prefix=/usr/local/libevent
# make && make install
# cd /opt/memcached-1.5.6/
# ./configure --prefix=/usr/local/memcached --with-libevent=/usr/local/libevent/
# make && make install
# ln -s /usr/local/memcached/bin/ /usr/local/bin/
# memcached -d -m 32m -p 11211 -u root
# netstat -ntap | grep memc
tcp 0 0 0.0.0.0:11211 0.0.0.0: LISTEN 58189/memcached
tcp6 0 0 :::11211 :::* LISTEN 58189/memcached
# systemctl stop firewalld.service
# setenforce 0
----------------------------数据操作--------------------------------------------------
# yum install telnet -y
# telnet 127.0.0.1 11211
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
add username 0 0 7
//不进行压缩和序列化标识 ，数据过期时间为永不过期 ，即将输入的字符串长度（0 0 7含义）
example //输入数据
get username //获取数据
VALUE username 0 7
example
gets username
VALUE username 0 7 1 //最后一位时更新因子会自增1
example
set username 0 0 10 //更新信息，若键名不存在，则自行添加
everything
replace username 0 0 8 //更新信息，若键名不存在，则报错
12345678
gets username
VALUE username 0 8 4
12345678
cas username 0 0 7 //检查更新，更新因子相等则更新否则返回EXISTS（不能更新）
logging
STORED
append username 0 0 7 //键值后追加数据
example
STORED
prepend username 0 0 2 //键值前追加数据
un
STORED
delecte username
flush_all //清除所有缓存数据
OK
stats //显示状态信息
quit //退出
=====================以下安装客户端--需要LAMP========================
第二台
# mkdir /abc
# mount.cifs //192.168.100.10/rhel7 /abc
# cd /abc/memcached/LAMP-php5.6/
# tar zxvf apr-1.6.2.tar.gz -C /opt/
# tar zxvf apr-util-1.6.0.tar.gz -C /opt/
# tar jxvf httpd-2.4.29.tar.bz2 -C /opt/
# mv apr-1.6.2/ httpd-2.4.29/srclib/apr
# mv apr-util-1.6.0/ httpd-2.4.29/srclib/apr-util
# yum -y install \
gcc \
gcc-c++ \
make \
pcre-devel \
expat-devel \
perl
# cd httpd-2.4.29
# ./configure \
--prefix=/usr/local/httpd \
--enable-so \
--enable-rewrite \
--enable-charset-lite \
--enable-cgi
# make && make install
# cp /usr/local/httpd/bin/apachectl /etc/init.d/httpd
# vim /etc/init.d/httpd
#chkconfig: 35 85 21 //第二行插入
# chkconfig --add httpd
# vim /usr/local/httpd/conf/httpd.conf
ServerName www.yun.com:80 //第197行
Listen 192.168.120.135:80 //第51行（注释第52行）
# ln -s /usr/local/httpd/conf/httpd.conf /etc/
# ln -s /usr/local/httpd/bin/ /usr/local/bin/
# apachectl -t
Syntax OK
# service httpd start
# netstat -ntap | grep 80
tcp 0 0 192.168.120.135:80 0.0.0.0: LISTEN 71464/httpd
------------------------------安装Mysql------------------------------------------
# yum install -y ncurses-devel autoconf cmake
# cd /abc/memcached/LAMP-php5.6/
# tar xzvf mysql-5.6.26.tar.gz -C /opt/
# cd /opt/mysql-5.6.26/
cmake\
-DCMAKE_INSTALL_PREFIX=/usr/local/mysql \
-DDEFAULT_CHARSET=utf8 \
-DDEFAULT_COLLATION=utf8_general_ci \
-DEXTRA_CHARSETS=all \
-DSYSCONFIDIR=/etc \
-DMYSQL_DATADIR=/home/mysql/ \
-DMYSQL_UNIX_ADDR=/home/mysql/mysql.sock
#make && make install
（等待很长时间）
# cp support-files/my-default.cnf /etc/my.cnf
cp：是否覆盖"/etc/my.cnf"？ yes
# cp support-files/mysql.server /etc/init.d/mysqld
# chmod 755 /etc/init.d/mysqld
# chkconfig --add /etc/init.d/mysqld
# chkconfigmysqld --level 235 on
# echo "PATH=$PATH:/usr/local/mysql/bin" >> /etc/profile
# source /etc/profile
# useradd -s /sbin/nologin mysql
# chown -R mysql:mysql /usr/local/mysql/
# /usr/local/mysql/scripts/mysql_install_db \
--user=mysql \
--ldata=/var/lib/mysql \
--basedir=/usr/local/mysql \
--datadir=/home/mysql
# ln -s /var/lib/mysql/mysql.sock/home/mysql/mysql.sock
# vim /etc/init.d/mysqld
basedir=/usr/local/mysql //第46行
datadir=/home/mysql //第47行
# service mysqld start
Starting MySQL. SUCCESS!
# netstat -anpt | grep 3306
tcp6 0 0 :::3306 :::* LISTEN 86823/mysqld
# mysqladmin -u root -p password "abc123"
Enter password:
# mysql -uroot -pabc123
------------------------------------------------以下安装PHP----------------------------
#yum -y install \
gd \
libpng \
libpng-devel \
pcre \
pcre-devel \
libxml2-devel \
libjpeg-devel
# cd /abc/memcached/LAMP-php5.6/
# tar xjvf php-5.6.11.tar.bz2 -C /opt/
# cd /opt/php-5.6.11/
#./configure \
--prefix=/usr/local/php5 \
--with-gd \
--with-zlib \
--with-apxs2=/usr/local/httpd/bin/apxs \
--with-mysql=/usr/local/mysql \
--with-config-file-path=/usr/local/php5 \
--enable-mbstring
# make && make install
# cp php.ini-development /usr/local/php5/php.ini
# ln -s /usr/local/php5/bin/ /usr/local/bin/
# ln -s /usr/local/php5/sbin/ /usr/local/sbin/
# vim /etc/httpd.conf
AddType application/x-httpd-php .php //第394行
AddType application/x-httpd-php-source .phps //第395行
DirectoryIndex index.html index.php //第256行
#vim /usr/local/httpd/htdocs/index.php
# mv index.html index.php
mv：是否覆盖"index.php"？ yes
# service httpd restart
# systemctl stop firewalld.service
# setenforce 0
在网页测试“http://192.168.120.135/index.php”
http://i2.运维网.com/images/blog/201809/21/fb52136e1bcfab178006a990207e3d7d.jpg
# vim index.php
# mysql -uroot -p
Enter password:
mysql> CREATE DATABASE sky;
Query OK, 1 row affected (0.00 sec)
mysql> GRANT all ON sky.* TO 'skyuser'@'%' IDENTIFIED BY 'admin123';
Query OK, 0 rows affected (0.12 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.09 sec)
# service httpd restart
在网页测试“http://192.168.120.135/index.php”
http://i2.运维网.com/images/blog/201809/21/7c0ee9f55492ddbc21351256a8e99eac.jpg
#测试php能否解析连接mysql
# cd /abc/memcached/
# tar zxvf memcache-2.2.7.tgz -C /opt/
# cd /opt/memcache-2.2.7/
# /usr/local/php5/bin/phpize //增加为PHP的模块后再对memcache进行配置
Configuring for:
PHP Api Version: 20131106
Zend Module Api No: 20131226
Zend Extension Api No: 220131226
# ./configure \
--enable-memcache \
--with-php-config=/usr/local/php5/bin/php-config
# make && make install
# vim /usr/local/php5/php.ini
extension_dir="/usr/local/php5/lib/php/extensions/no-debug-zts-20131226/" //第737行
extension=memcache.so //第738行
# cd /usr/local/httpd/htdocs/
# vim index.php
# service httpd restart
在网页测试“http://192.168.120.135/index.php”
http://i2.运维网.com/images/blog/201809/21/8b7868a7b373918860bb7c3898bc01cf.jpg
基础Memcached服务就搭建完毕了，下一篇将介绍Memcached群集服务。
页:
[1]