Mercurial > hg > nginx
comparison src/core/ngx_syslog.h @ 9225:1c9264603adc
Syslog: introduced ngx_syslog_send() error logging moderation.
Errors when logging to syslog are now logged at most once per second.
This ensures that persistent errors won't flood other logs, and spontaneous
errors, such as ENOBUFS as observed on BSD systems when syslogd cannot cope
with load, or EAGAIN as seen in similar situation on Linux, won't further
overload logging subsystem, leading to more errors.
Further, errors now can only trigger reconnects at most once per second.
This ensures that persistent errors, which cannot be fixed with reconnects,
don't trigger too much unneeded work.
Additionally, in case of connection errors, such as when syslogd is not
running, connection attempts are only made once per second.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Fri, 01 Mar 2024 05:42:12 +0300 |
parents | 8771d35d55d0 |
children |
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9224:c7c8354f99fa | 9225:1c9264603adc |
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19 ngx_connection_t conn; | 19 ngx_connection_t conn; |
20 | 20 |
21 ngx_log_t log; | 21 ngx_log_t log; |
22 ngx_log_t *logp; | 22 ngx_log_t *logp; |
23 | 23 |
24 time_t error_log_time; | |
25 time_t connect_error_time; | |
26 | |
24 unsigned busy:1; | 27 unsigned busy:1; |
25 unsigned nohostname:1; | 28 unsigned nohostname:1; |
26 } ngx_syslog_peer_t; | 29 } ngx_syslog_peer_t; |
27 | 30 |
28 | 31 |