mirror of
https://github.com/chatmail/relay.git
synced 2026-08-10 18:40:51 +00:00
holger krekel
fa5afadaaa
The default values are geared towards minimal-requirements server. If you have a big server, you will need to set chatmail.ini parameters.
27 lines
1.2 KiB
Bash
Executable File
27 lines
1.2 KiB
Bash
Executable File
#!/bin/bash
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#
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# Show current IMAP and SMTP connections on a chatmail relay,
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# to compare against the max_imap_connections and max_smtp_connections
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# settings in chatmail.ini. Run this on the relay itself.
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set -e
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# Count established TCP connections whose local port is one of the arguments.
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established() {
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filter=$(printf 'sport = :%s or ' "$@")
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ss -Htn state established "( ${filter% or } )" | wc -l
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}
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# doveadm prints a header line and then one line per logged-in user,
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# with that user's number of connections in the second column.
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sessions=$(doveadm who | awk 'NR > 1 { n += $2 } END { print n + 0 }')
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# Unless imap_compress is enabled, connections idle for
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# imap_hibernate_timeout are handed over to the imap-hibernate
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# process, so they cost no imap process while idle.
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active=$(pgrep -x imap | wc -l)
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printf 'imap %6d ports 143,993 (max_imap_connections)\n' "$(established 143 993)"
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printf ' %6d dovecot sessions, %d of them in an active imap process\n' "$sessions" "$active"
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printf 'submission %6d ports 465,587 (max_smtp_connections per port)\n' "$(established 465 587)"
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printf 'incoming %6d port 25 (from other relays, no chatmail.ini limit)\n' "$(established 25)"
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