Centos7 configuration memcached
Memcached is a distributed cache system used to speed up website access, especially for large websites that require frequent access to databases.
1. Install memcached
yum install memcached
yum install libmemcached
netstat -ntpl
systemctl status memcached
systemctl start memcached
netstat -ntupl
2. Configure memcached to listen only on 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 Do not enable UDP listening
systemctl restart memcached
netstat -ntpl
systemctl status memcached
3. Check memcached running, you can see a lot of information
memstat --servers="127.0.0.1"
4. configure memcached enable 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. Install cyrus SASL library
yum install cyrus-sasl-devel cyrus-sasl-plain
6. Configure 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
