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After edited the /etc/security/limits.conf file to set the nofile parameter to unlimited, server got hanged . Can't login in via ssh. Tried to take console, issue with console. Will reboot of the VM will solve the login issue ?

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Running ulimit -n unlimited as superuser on Linux says: Operation not permitted. You need to boot into single user mode and fix your limits.conf back and specify some reasonable value, because Linux denies unlimited NOFILE.

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  • Curious. Will single-user mode ignore limits.conf?
    – Chris Davies
    Jul 22, 2016 at 23:00
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    Depends on how init system handles this. If it starts sulogin with ulimits from limits.conf then I think this is disastrous, but can be easily fixed with rebooting into plain single user with init=/bin/sh kernel parameter, which I always use. Then you will not be affected by bad limits.conf.
    – user140866
    Jul 23, 2016 at 4:21

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