centos7配置Memcached

Memcached是一套分散式的高速緩存系統，用於提升網站訪問速度，尤其對於一些大型的、需要頻繁訪問資料庫的網站，訪問速度提升效果十分顯著。

1.安裝memcached

yum install memcached

yum install libmemcached

netstat -ntpl

systemctl status memcached

systemctl start memcached

netstat -ntupl

2.配置memcached只監聽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 不啟用UDP監聽

systemctl restart memcached

netstat -ntpl

systemctl status memcached

3.檢查memcached運行，能看到很多信息

memstat --servers="127.0.0.1"

4.配置memcached啟用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.安裝cyrus SASL庫

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