centos7下memcached的安装配置
2024-09-07 12:41:22 221人阅读
1.下载
官网
http://memcached.org/
memcached 依赖 libevent-devel
需要先安装libevent-devel
1 yum -y install libevent-devel
安装完毕
继续安装memcached
1 wget http://memcached.org/files/memcached-1.4.35.tar.gz
2
3 tar -zxvf memcached-1.4.35.tar.gz
4
5 cd memcached-1.4.35.tar.gz
6
7 ./configure && make && sudo make install
安装成功 ，可以在
1 /usr/local/bin
2 找到memcached
2.启动与关闭
1.启动服务端
1 /usr/local/bin/memcached -d -m 10 -u root -l 127.0.0.1 -p 12000 -c 256 -P /tmp/memcached.pid
说明：
1 -d选项是启动一个守护进程，
2 -m是分配给Memcache使用的内存数量，单位是MB，我这里是10MB，
3 -u是运行Memcache的用户，我这里是root，
4 -l是监听的服务器IP地址，如果有多个地址的话，我这里指定了服务器的IP地址127.0.0.1
5 -p是设置Memcache监听的端口，我这里设置了12000，最好是1024以上的端口，
6 -c选项是最大运行的并发连接数，默认是1024，我这里设置了256，按照你服务器的负载量来设定，
7 -P是设置保存Memcache的pid文件，我这里是保存在 /tmp/memcached.pid，
检查是否启动成功：
1 [root@localhost bin]# ps aux |grep memcached
2 apache 9949 0.0 0.4 324676 4104 ? Ssl 10:21 0:01 /usr/local/bin/memcached -d -m 10 -u apache -l 127.0.0.1 -p 12000 -c 256 -P /tmp/memcached.pid
3 root 10652 0.0 0.0 112648 960 pts/0 R+ 11:08 0:00 grep --color=auto memcached
2.结束memcached
1 # kill `cat /tmp/memcached.pid`
也可以启动多个守护进程，不过端口不能重复。
3.php中使用memcached
1.安装php-pecl-memcached
1 yum -y install php-pecl-memcached
2
3 添加模块到php
4 vim /etc/php.ini
5 添加
6
7 extension=memcached.so
![技术分享]()
看到这个，说明模块安装成功。
2.编写测试php
1 <?php
2 $m = new Memcached();
3 $m->addServer(‘localhost‘, 12000);
4 print_r($m->getVersion());
如果正常显示版本号
Array ( [localhost:12000] => 1.4.35 )
则php连接memcached成功
如果显示
Array ( [localhost:12000] => 255.255.255)
则连接失败
解决方法：
第一，注意开启memcached服务的时候 指定-u apache
第二，开启了SeLinux
运行
1 /usr/sbin/setsebool httpd_can_network_connect=1
ok,可以正常使用了。
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