author：headsen chen
date：2017-12-07 16:33:40
notice：This article is created by headsen chen ,and not allowed to copy,or you will counter law question.
install：
yum -y install epel-release
yum -y install redis
modify redis's control file：
vim /etc/redis.conf
bind 192.168.1.10 # just listen the real ip of localhost.
daemonize yes # redis can work in daemon states,and when machine is open and redis service is running.
start:
systemctl enable redis
systemctl start redis
manage:
[root@node1 tmp]# redis-cli -h 192.168.1.10
192.168.13.164:6379[6]> info # to show more detail of redis
...
# Keyspace
db6:keys=2,expires=0,avg_ttl=0 # db6 means database is 6 and keys=2 means in 6 has two keys
192.168.13.164:6379[6]> keys * # keys * show keys name
1) "nginx-log"
2) "system"
192.168.13.164:6379[6]> llen system # see system key information,means that has 121962 values in this key not read ,and when readed for all ,will change to 0
(integer) 121962
192.168.13.164:6379[6]> LINDEX system -1 # to see the latest message of system key
"{"message":"Dec 7 16:37:50 node1 elasticsearch: [2017-12-07 16:37:50,074][WARN ][monitor.jvm ] [node-1] [gc][young][80898][1132] duration [2.8s], collections [1]/[2.9s], total [2.8s]/[1.5m], memory [135.7mb]->[119.2mb]/[1015.6mb], all_pools {[young] [40.1mb]->[21.8mb]/[66.5mb]}{[survivor] [6.9mb]->[8.3mb]/[8.3mb]}{[old] [88.6mb]->[89.1mb]/[940.8mb]}","@version":"1","@timestamp":"2017-12-07T08:37:52.085Z","path":"/var/log/messages","host":"node1.com","type":"system"}"
192.168.13.164:6379[6]> quit # exit of redis managerment
[root@node1 tmp]#