[Merged by Bors] - Remove SIGPIPE handler #2558
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## Proposed Changes Remove the SIGPIPE handler added in #2486. We saw some of the testnet nodes running under `systemd` being stopped due to `journald` restarts. The systemd docs state: > If systemd-journald.service is stopped, the stream connections associated with all services are terminated. Further writes to those streams by the service will result in EPIPE errors. In order to react gracefully in this case it is recommended that programs logging to standard output/error ignore such errors. If the SIGPIPE UNIX signal handler is not blocked or turned off, such write attempts will also result in such process signals being generated, see signal(7). From https://www.freedesktop.org/software/systemd/man/systemd-journald.service.html ## Additional Info It turned out that the issue described in #2114 was due to `tee`'s behaviour rather than Lighthouse's, so the SIGPIPE handler isn't required for any current use case. An alternative to disabling it all together would be to exit with a non-zero code so that systemd knows to restart the process, but it seems more desirable to tolerate journald glitches than to restart frequently.
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Proposed Changes
Remove the SIGPIPE handler added in #2486.
We saw some of the testnet nodes running under
systemdbeing stopped due tojournaldrestarts. The systemd docs state:From https://www.freedesktop.org/software/systemd/man/systemd-journald.service.html
Additional Info
It turned out that the issue described in #2114 was due to
tee's behaviour rather than Lighthouse's, so the SIGPIPE handler isn't required for any current use case. An alternative to disabling it all together would be to exit with a non-zero code so that systemd knows to restart the process, but it seems more desirable to tolerate journald glitches than to restart frequently.