解决redis Can't save in background: fork: Cannot allocate memory
2015-05-19 02:11
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前面启动Redis时，看到如下警告：
需要修改/etc/sysctl.conf文件：
末尾追加vm.overcommit_memory = 1
然后执行sysctl vm.overcommit_memory=1，使之生效：
[1958] 13 Aug 16:18:24 # 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.
需要修改/etc/sysctl.conf文件：
vim /etc/sysctl.conf
末尾追加vm.overcommit_memory = 1
然后执行sysctl vm.overcommit_memory=1，使之生效：
# sysctl vm.overcommit_memory=1 vm.overcommit_memory = 1
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