centos7配置Memcached

Memcached是一套分布式的高速缓存系统，用于提高网站访问速度，尤为对于一些大型的、须要频繁访问数据库的网站，访问速度提高效果十分显著。

 

1.安装memcached

yum install memcached

yum install libmemcached

netstat -ntpl

systemctl status memcached

systemctl start memcached

netstat -ntupl

 

2.配置memcached只监听127.0.0.1

vim /etc/sysconfig/memcached 

  PORT="11211"

  USER="memcached"

  MAXCONN="1024"

  CACHESIZE="64"

  OPTIONS="-l 127.0.0.1 -U 0“   # -U 0 不启用UDP监听

 

systemctl restart memcached

netstat -ntpl

systemctl status memcached

 

3.检查memcached运行，能看到不少信息

memstat --servers="127.0.0.1"

 

4.配置memcached启用sasl

vim /etc/sysconfig/memcached

  PORT="11211"

  USER="memcached"

  MAXCONN="1024"

  CACHESIZE="64"

  OPTIONS="-l 127.0.0.1 -U 0 -S -vv"

 

systemctl restart memcached

netstat -ntpl

memstat --servers="127.0.0.1"

echo $?

 

5.安装cyrus SASL库

yum install cyrus-sasl-devel cyrus-sasl-plain

 

6.配置sasl

vim /etc/sasl2/memcached.conf

mech_list: plain

log_level: 5

sasldb_path: /etc/sasl2/memcached-sasldb2

 

cat /etc/sasl2/memcached.conf 

saslpasswd2 -a memcached -c -f /etc/sasl2/memcached-sasldb2 zeng

chown memcached:memcached /etc/sasl2/memcached-sasldb2 

systemctl restart memcached

netstat -ntpl

memstat --servers="127.0.0.1"

echo $?

memstat --servers="127.0.0.1" --username=zeng --password=redhat