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