redis启动警告解决

文章目录[x]
  1. 背景
  2. 解决方案

背景

最近在测试环境重启后,redis启动遇到了三个警告

第一个警告:The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
第二个警告: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.
第三个警告:you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix thisissue 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 thesetting after a reboot. Redis must be restarted after THP is disabled.

解决方案

第一个警告

echo 'echo 511 > /proc/sys/net/core/somaxconn' >> /etc/rc.local
source /etc/rc.local

第二个警告

echo "vm.overcommit_memory = 1" >> /etc/sysctl.conf
sysctl -p

第三个警告

echo 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' >> /etc/rc.local
source /etc/rc.local

其实redis已经做到很详细了,在报错中已经给出了详细的方案

 

详细参考

报错一:     http://blog.csdn.net/raintungli/article/details/37913765

报错二:     http://blog.csdn.net/whycold/article/details/21388455

报错三:     http://www.cnblogs.com/kerrycode/archive/2015/07/23/4670931.html

 

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