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services: dovecot: Allow to set 'client-limit'.

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* doc/guix.texi (Mail Services): Update accordingly.
* gnu/services/mail.scm (service-configuration)[client-limit]: New field.
(dovecot-configuration)[services]: Set 'client-limit' to its correct default
value.
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Clément Lassieur 2018-11-10 15:14:28 +01:00
parent 005ec8d09c
commit 8d9bb4b4d0
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2 changed files with 32 additions and 5 deletions
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10
doc/guix.texi
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@ -14349,6 +14349,16 @@ Defaults to @samp{#t}.
@end deftypevr
@deftypevr {@code{service-configuration} parameter} non-negative-integer client-limit
Maximum number of simultaneous client connections per process. Once
this number of connections is received, the next incoming connection
will prompt Dovecot to spawn another process. If set to 0,
@code{default-client-limit} is used instead.
Defaults to @samp{0}.
@end deftypevr
@deftypevr {@code{service-configuration} parameter} non-negative-integer service-count
Number of connections to handle before starting a new process.
Typically the only useful values are 0 (unlimited) or 1. 1 is more

27
gnu/services/mail.scm
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@ -1,6 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 Andy Wingo <wingo@igalia.com>
;;; Copyright © 2017 Clément Lassieur <clement@lassieur.org>
;;; Copyright © 2017, 2018 Clément Lassieur <clement@lassieur.org>
;;; Copyright © 2017 Carlo Zancanaro <carlo@zancanaro.id.au>
;;; Copyright © 2017 Tobias Geerinckx-Rice <me@tobias.gr>
;;;
@ -290,6 +290,12 @@ the section name.")
"Listeners for the service. A listener is either an
@code{unix-listener-configuration}, a @code{fifo-listener-configuration}, or
an @code{inet-listener-configuration}.")
(client-limit
(non-negative-integer 0)
"Maximum number of simultaneous client connections per process. Once this
number of connections is received, the next incoming connection will prompt
Dovecot to spawn another process. If set to 0, @code{default-client-limit} is
used instead.")
(service-count
(non-negative-integer 1)
"Number of connections to handle before starting a new process.
@ -475,6 +481,7 @@ complex, customize the address and port fields of the
(list
(service-configuration
(kind "imap-login")
(client-limit 0)
(listeners
(list
(inet-listener-configuration (protocol "imap") (port 143) (ssl? #f))
@ -487,10 +494,15 @@ complex, customize the address and port fields of the
(inet-listener-configuration (protocol "pop3s") (port 995) (ssl? #t)))))
(service-configuration
(kind "lmtp")
(client-limit 1)
(listeners
(list (unix-listener-configuration (path "lmtp") (mode "0666")))))
(service-configuration (kind "imap"))
(service-configuration (kind "pop3"))
(service-configuration
(kind "imap")
(client-limit 1))
(service-configuration
(kind "pop3")
(client-limit 1))
(service-configuration (kind "auth")
;; In what could be taken to be a bug, the default value of 1 for
;; service-count makes it so that a PAM auth worker can't fork off
@ -501,10 +513,15 @@ complex, customize the address and port fields of the
;; is the default for all other services. As a hack, bump this value to
;; 30.
(service-count 30)
(client-limit 0)
(listeners
(list (unix-listener-configuration (path "auth-userdb")))))
(service-configuration (kind "auth-worker"))
(service-configuration (kind "dict")
(service-configuration
(kind "auth-worker")
(client-limit 1))
(service-configuration
(kind "dict")
(client-limit 1)
(listeners (list (unix-listener-configuration (path "dict")))))))
"List of services to enable. Available services include @samp{imap},
@samp{imap-login}, @samp{pop3}, @samp{pop3-login}, @samp{auth}, and