CentOS 7
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Redis : Install
2016/07/20
 
Install Redis which is the In-memory Data structure store Software.
(generally called NoSQL or Key-Value Database)
[1] Install Redis.
# install from EPEL

[root@dlp ~]#
yum --enablerepo=epel -y install redis
[2] Configure basic settings for Redis.
[root@dlp ~]#
vi /etc/redis.conf
# line 45: listening port

port 6379
# line 64: listening interface

# localhost only by default

# if you'd like to connect from other Hosts,

# change to the own IP address or to 0.0.0.0

bind 127.0.0.1
# line 118: number of Databases

# database ID is is assgined from 0 to (setting value - 1)

databases 16
# line 142: save caching Datase on Disk

# the default settings below means like follows

# after 900 sec if at least 1 key changed

# after 300 sec if at least 10 keys changed

# after 60 sec if at least 10000 keys changed

# if you'd like to disable this function, comment out all lines fo "save ***" or specify [save ""]

save 900 1
save 300 10
save 60 10000
# line 392: authorization password

requirepass password
# line 501: alternative persistence mode ("yes" means enabled)

# if enabled, Redis loses high performance but get more safety

appendonly no
# line 531: if enabled "appendonly yes" when wirting data on Disk

# no means do not fsync by Redis (just let the OS flush the data)

# appendfsync always
appendfsync everysec
# appendfsync no
[root@dlp ~]#
systemctl start redis

[root@dlp ~]#
systemctl enable redis

[3] If you use Redis from other Hosts and also Firewalld is running, allow Redis port.
[root@dlp ~]#
firewall-cmd --add-port=6379/tcp --permanent

success
[root@dlp ~]#
firewall-cmd --reload

success
 
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