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5 Commits
Author SHA1 Message Date
andreasandClaude Opus 4.8 f603ef9bd2 fix: declare plugin interval so stale data waits two full intervals 
The server inferred each plugin's collection interval from the gap between
the last two received PLG samples, then expired data at interval * 3. After
an outage this guess was wrong: the request_update re-send of collect-once
InfoPlugins produced two close samples, yielding a tiny inferred interval
that purged permanent info data minutes after recovery.

Clients now declare each plugin's interval in the PLG message (_interval).
The server uses it directly (from the first post-recovery sample), expiring
at interval * 3 so live data survives at least two full intervals; interval
0 marks collect-once InfoPlugins that never go stale. Legacy clients omit
the field and fall back to the previous inferred-gap behavior.

Adds _interval to all three clients: hbc, hbc_mini.py, hbc_mini.c.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
 2026-06-26 11:37:48 -04:00
woods 862a9cdea0 hbc_mini.c: make it work on NetBSD 
This fixes the numbers by using the correct MIB to match the struct.
 2026-06-02 13:42:11 -07:00
woods 9351938b15 hbc_mini.c: make it compile on NetBSD 
Use the public "struct uvmexp_sysctl" instead of "struct uvmexp".

The numbers from the memory_monitor are wonky, but it builds and runs.
 2026-06-02 12:05:42 -07:00
Andreas WredeandClaude Sonnet 4.6 588eb2a792 feat: retry DNS resolution indefinitely and add -4/-6 flags in hbc and hbc_mini.c 
Mirror the same changes from hbc_mini.py: retry host resolution with
exponential backoff (5s→60s) instead of exiting on DNS failure, and add
mutually exclusive -4 / -6 flags to restrict connections to IPv4 or IPv6.

In hbc (main.py) the retry sleep is interruptible via the shutdown_event.
In hbc_mini.c signal handlers are moved before the resolution loop so
SIGINT/SIGTERM can break the retry during startup.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-05-12 08:15:53 -04:00
andreasandClaude Sonnet 4.6 2df2ad18c9 scripts/c: add single-file C port of hbc_mini 
hbc_mini.c is a full port of scripts/hbc_mini.py requiring only zlib,
pthreads, and a C11 compiler. Supports Linux, FreeBSD, NetBSD, and
DragonFly BSD with platform-specific plugin backends:

  - cpu_monitor:    /proc/stat (Linux) or kern.cp_time sysctl (BSD)
  - memory_monitor: /proc/meminfo (Linux), vm.stats.vm.* (FreeBSD),
                    struct uvmexp (NetBSD)
  - network_monitor:/proc/net/dev (Linux) or getifaddrs()+if_data (BSD)
  - disk_monitor:   df -P (all platforms)
  - ping_monitor:   ping subprocess (all platforms)
  - nagios_runner:  shell commands with perfdata parsing (all platforms)
  - os_info:        uname() + /etc/os-release (Linux) or kern.osrelease (BSD)

Build: cc -O2 -o hbc_mini hbc_mini.c -lz -lpthread -lm

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-05-08 12:23:45 -04:00