CentOS Stream 9
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Redis 6 : Install
2022/07/04
 
Install Redis which is the In-memory Data structure store Software.
[1] Install Redis.
[root@dlp ~]#
dnf -y install redis
[2] Configure basic settings for Redis.
[root@dlp ~]#
vi /etc/redis/redis.conf
# line 75 : listening interface
# localhost only by default
# if you'd like to connect from other Hosts,
# hange to the own IP address or set to [0.0.0.0]

127.0.0.1 -::1
# line 98 : listening port

port 6379
# line 259 : daemonize setting
# if you use Redis as service daemon, turn to [yes]

daemonize no
# line 329 : number of Databases
# database ID is assgined from 0 to (setting value - 1)

databases 16
# line 383 : 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 3600 1
# save 300 100
# save 60 10000
# line 904 : authentication password

requirepass password
# line 1254 : alternative persistence mode ("yes" means enabled)
# if enabled, Redis loses high performance but get more safety

appendonly no
# line 1283 : 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 enable --now redis

[3] If Firewalld is running and also you use Redis as a service Daemon, allow service.
[root@dlp ~]#
firewall-cmd --add-service=redis

success
[root@dlp ~]#
firewall-cmd --runtime-to-permanent

success
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