背景

最近在測試環境重啟后,redis啟動遇到了三個警告

第一個警告：The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
第二個警告：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.
第三個警告：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.

解決方案

第一個警告

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

第二個警告

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

第三個警告

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

其實redis已經做到很詳細了,在報錯中已經給出了詳細的方案

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詳細參考

報錯一: ??? http://blog.csdn.net/raintungli/article/details/37913765

報錯二:???? http://blog.csdn.net/whycold/article/details/21388455

報錯三:???? http://www.cnblogs.com/kerrycode/archive/2015/07/23/4670931.html

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轉載于:https://www.cnblogs.com/Nedved/p/10472430.html

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