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New View the Bug / Feature Tracker

[6.11.5] allocated PTY's not unallocated on close

By capino

· 2267 views
  • Solved
  • Minor

When using a webbrowser to open a docker container console, multiple pty's are allocated, but not all are unallocated on close.
This can lead to not being able to open a pty when the amount of allocated pty's gets to high with the following message: 

OCI runtime exec failed: exec failed: unable to start container process: open /dev/ptmx: no space left on device: unknown

 

A reboot is needed to free up the allocated PTY's

A workaround is to increase the max pty's by running:  

sysctl -w kernel.pty.max=8192


I have tested this in FireFox, Brave, Safari and Chrome.

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