Error: Dynamic MMap ran out of room in CentOS 7

If you’ve encountered the error «Error: Dynamic MMap ran out of room» on your CentOS 7 OS, don’t panic. This is a fairly common problem that can be easily resolved. Let’s figure out what this error is and how to fix it.

Causes of the «Error: Dynamic MMap ran out of room» error

This error usually occurs because the operating system cannot allocate enough memory for dynamic memory mapping (Dynamic MMap). This can happen for various reasons, such as having a large number of processes that use a lot of memory, or due to incorrect system parameter settings.

How to fix the «Error: Dynamic MMap ran out of room» error

There are several ways to solve this problem. One of them is to increase the dynamic memory limit in your system. To do this, run the following command:

This command will set a new value for the vm.max_map_count parameter, allowing your system to allocate more memory for Dynamic MMap. After that, reboot the system for the changes to take effect.

If this doesn’t help, try limiting the number of processes that can use Dynamic MMap. To do this, run the following command:

This command will set a limit on the number of open file descriptors for each process. After that, restart the necessary services or applications for the changes to take effect.

Conclusion

The «Error: Dynamic MMap ran out of room» error can be quite annoying, but as you can see, it can be easily fixed. Follow the instructions above and your CentOS 7 system will be up and running without any problems again. Good luck!