WARNING: soft rlimits too low
Mongo startup warnings
If you have just installed / started MongoDB for the first time, you might get a warning similar to the one below.
Server has startup warnings: 2015-02-02T10:41:46.200+0000 [initandlisten] 2015-02-02T10:41:46.200+0000 [initandlisten] ** WARNING: soft rlimits too low.
What are soft rlimits?
In a nutshell, the soft limits are value enforced by the kernel for the corresponding resource. The hard limit is a top end of range for the soft limit. It means that an unprivileged process may only set its soft limit to a value from the threshold from 0 up to the hard limit, and (irreversibly) lower its hard limit. A privileged process is on the other hand allowed to make arbitrary changes to either limit value.
How to fix "soft rlimits too low" warning
If you just want to fix problem temporarily increase soft limits by running:
ulimit -n 1024
Persisting the fix after the reboot (on yosemite)
Default ulimit is derived from
launchctl limit and even though user may change ulimit numbers, they can't exceed launchctl limit hard limits.
That is why it is good idea to create startup plist config.
Just wget this gist with command below or manualy create file '/Library/LaunchDaemons/my.startup.environment.plist' copying gist content.
sudo wget -O /Library/LaunchDaemons/limit.maxfiles.plist https://gist.github.com/rusticode/365f3489b5ed51574363/raw sudo wget -O /Library/LaunchDaemons/limit.maxproc.plist https://gist.github.com/rusticode/8b5482aaa8a7d8174f6c/raw
launchctl to load mongo jobs.
sudo launchctl load -w /Library/LaunchDaemons/limit.maxfiles.plist sudo launchctl load -w /Library/LaunchDaemons/limit.maxproc.plist
- ulimit command
- launchctl command
- mongod mac osx rlimits warning
- persisting ulimits on mac
- relationship between launchctl and ulimit
- no launchd conf on yosemity
- open files limit
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