[gpp@goldpanpan src]$ 25342:C 14 Nov 11:08:48.118 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
25342:C 14 Nov 11:08:48.118 # Redis version=4.0.11, bits=64, commit=00000000, modified=0, pid=25342, just started
25342:C 14 Nov 11:08:48.118 # Warning: no config file specified, using the default config. In order to specify a config file use ./redis-server /path/to/redis.conf
25342:M 14 Nov 11:08:48.120 # Not listening to IPv6: unsupproted
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_.-`` `. `_. ''-._ Redis 4.0.11 (00000000/0) 64 bit
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( ' , .-` | `, ) Running in standalone mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 6379
| `-._ `._ / _.-' | PID: 25342
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|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
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|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
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25342:M 14 Nov 11:08:48.121 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
25342:M 14 Nov 11:08:48.121 # Server initialized
25342:M 14 Nov 11:08:48.121 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
25342:M 14 Nov 11:08:48.121 # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.
25342:M 14 Nov 11:08:48.121 * Ready to accept connections
警告一：
WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
解决：
[root@goldpanpan ~]# echo 511 >/proc/sys/net/core/somaxconn
[root@goldpanpan ~]# echo "net.core.somaxconn = 551" > /etc/sysctl.conf
警告二：
WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
解决：
[root@goldpanpan ~]# echo 1 > /proc/sys/vm/overcommit_memory
[root@goldpanpan ~]# echo "vm.overcommit_memory=1" >> /etc/sysctl.conf
警告三：
WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.
解决：
[root@goldpanpan ~]# echo never > /sys/kernel/mm/transparent_hugepage/enabled
[root@goldpanpan ~]# vim /etc/rc.local
if test -f /sys/kernel/mm/transparent_hugepage/enabled; then
echo never > /sys/kernel/mm/transparent_hugepage/enabled
fi
if test -f /sys/kernel/mm/transparent_hugepage/defrag; then
echo never > /sys/kernel/mm/transparent_hugepage/defrag
fi
centOS8下安装redis遇到的问题，在此记录一下；
参考博客：
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
本文链接：https://blog.csdn.net/qq_35364632/article/details/84063290 | 
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