Errors - accept4: too many open files

[pinootto]

Hello,

I installed OpenBazaar 2.0 beta on a VPS.

It seems to work, but in the log I see a lot of the following errors:

2017/10/05 05:39:30 http: Accept error: accept tcp4 0.0.0.0:9005: accept4: too many open files; retrying in 1s
2017/10/05 05:39:30 http: Accept error: accept tcp4 45.32.115.191:4002: accept4: too many open files; retrying in 1s
2017/10/05 05:39:30 http: Accept error: accept tcp6 [::]:9005: accept4: too many open files; retrying in 1s
2017/10/05 05:39:31 http: Accept error: accept tcp4 0.0.0.0:9005: accept4: too many open files; retrying in 1s
2017/10/05 05:39:31 http: Accept error: accept tcp4 45.32.115.191:4002: accept4: too many open files; retrying in 1s
2017/10/05 05:39:31 http: Accept error: accept tcp6 [::]:9005: accept4: too many open files; retrying in 1s
2017/10/05 05:39:32 http: Accept error: accept tcp4 0.0.0.0:9005: accept4: too many open files; retrying in 1s
2017/10/05 05:39:32 http: Accept error: accept tcp4 45.32.115.191:4002: accept4: too many open files; retrying in 1s
2017/10/05 05:39:32 http: Accept error: accept tcp6 [::]:9005: accept4: too many open files; retrying in 1s
2017/10/05 05:39:33 http: Accept error: accept tcp4 0.0.0.0:9005: accept4: too many open files; retrying in 1s
2017/10/05 05:39:33 http: Accept error: accept tcp4 45.32.115.191:4002: accept4: too many open files; retrying in 1s
2017/10/05 05:39:33 http: Accept error: accept tcp6 [::]:9005: accept4: too many open files; retrying in 1s
2017/10/05 05:39:34 http: Accept error: accept tcp4 0.0.0.0:9005: accept4: too many open files; retrying in 1s
2017/10/05 05:39:34 http: Accept error: accept tcp4 45.32.115.191:4002: accept4: too many open files; retrying in 1s
2017/10/05 05:39:34 http: Accept error: accept tcp6 [::]:9005: accept4: too many open files; retrying in 1s

How can I do?

Best regards
giovanni

[hoffmabc]

This is a pretty common error related to the VPS probably only allowing so many files to be opened by a process and since the peer to peer IPFS code opens many connections (each a file) it can overwhelm that limit quickly.

See: https://ubuntuforums.org/showthread.php?t=2315142

[pinootto]

Thank you, Brian.

I fixed the issue by increasing the limit for the number of open files.

In addition to your link, I also found this useful link:
https://easyengine.io/tutorials/linux/increase-open-files-limit/

I used the "Per-User Limit" solution, without the need to reboot the VPS.

I am a big fan of IPFS and OpenBazaar (actually all the decentralized systems).
I am sure that OpenBazaar will spread a lot and it will be very popular in the next few years.

Thank you for the awesome work!

[cpacia]

Just merged a PR to automatically raise the file descriptor limit which seems to be working. Hopefully we'll be able to put this issue behind us.

[pinootto]

Thanks.