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mod_persisthosts/mod_persisthosts.lua @ 4877:adc6241e5d16
mod_measure_process: Report the enforced limit
The soft limit is what the kernel actually enforces, while the hard
limit is is how far you can change the soft limit without privileges.
Unless the process dynamically adjusts the soft limit, knowing the hard
limit is not as useful as knowing the soft limit.
Reporting the soft limit and the number of in-use FDs allows placing
alerts on expressions like 'process_open_fds / process_max_fds >= 0.95'
author | Kim Alvefur <zash@zash.se> |
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date | Tue, 18 Jan 2022 18:55:20 +0100 |
parent | 2447:366fadb5c6e5 |
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-- mod_persisthosts module:set_global(); local set = require"util.set"; local stat = require"lfs".attributes; local resolve_relative_path = require"core.configmanager".resolve_relative_path; local vhost_path = module:get_option_string("persisthosts_path", "conf.d"); local path_pattern = resolve_relative_path(prosody.paths.config, vhost_path) .. "/%s.cfg.lua"; local original = set.new(); original:include(prosody.hosts); module:hook("host-activated", function(host) if not original:contains(host) then local path = path_pattern:format(host); if not stat(path) then local fh, err = io.open(path, "w"); if fh then fh:write(("VirtualHost%q\n"):format(host)); module:fire_event("host-persisted", { host = host, file = fh }); fh:close(); module:log("info", "Config file for host '%s' created", host); else module:log("error", "Could not open '%s' for writing: %s", path, err or "duno"); end else module:log("debug", "File '%s' existed already", path); end else module:log("debug", "VirtualHost '%s' existed already", host); end end);