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MEDIUM: init: allow directory as argument of -f

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If -f argument is a directory add all the files (and only files) it
containes to the config files list.
These files are added in lexical order (respecting LC_COLLATE).
Only files with ".cfg" extension are added.
Only non hidden files (not prefixed with ".") are added.
Symlink are followed.
The -f order is still respected:

        $ tree -a rootdir
        rootdir
        |-- dir1
        ||-- .6.cfg
        ||-- 1.cfg
        ||-- 2
        ||-- 3.cfg
        ||-- 4.cfg -> 1.cfg
        ||-- 5 -> 1.cfg
        ||-- 7.cfg -> .
        |`-- dir4
        |`-- 8.cfg
        |-- dir2
        ||-- 10.cfg
        |`-- 9.cfg
        |-- dir3
        |`-- 11.cfg
        |-- link -> dir3/
        |-- root1
        |-- root2
        `-- root3

        $ ./haproxy -C rootdir -f root2 -f dir2 -f root3 -f dir1 \
                               -f link -f root1
        root2
        dir2/10.cfg
        dir2/9.cfg
        root3
        dir1/1.cfg
        dir1/3.cfg
        dir1/4.cfg
        link/11.cfg
        root1

This can be useful on systemd where you can't change the haproxy
commande line options on service reload.
This commit is contained in:
Maxime de Roucy
2016-05-13 23:52:56 +02:00
committed by Willy Tarreau
parent 0f503925f0
commit 379d9c7c14
3 changed files with 134 additions and 26 deletions
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8
doc/haproxy.1
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@@ -6,7 +6,7 @@ HAProxy \- fast and reliable http reverse proxy and load balancer
.SH SYNOPSIS
haproxy \-f <configuration\ file> [\-L\ <name>] [\-n\ maxconn] [\-N\ maxconn] [\-C\ <dir>] [\-v|\-vv] [\-d] [\-D] [\-q] [\-V] [\-c] [\-p\ <pidfile>] [\-dk] [\-ds] [\-de] [\-dp] [\-db] [\-dM[<byte>]] [\-m\ <megs>] [{\-sf|\-st}\ pidlist...]
haproxy \-f <configuration\ file|dir> [\-L\ <name>] [\-n\ maxconn] [\-N\ maxconn] [\-C\ <dir>] [\-v|\-vv] [\-d] [\-D] [\-q] [\-V] [\-c] [\-p\ <pidfile>] [\-dk] [\-ds] [\-de] [\-dp] [\-db] [\-dM[<byte>]] [\-m\ <megs>] [{\-sf|\-st}\ pidlist...]
.SH DESCRIPTION
@@ -33,8 +33,10 @@ instances without risking the system's stability.
.SH OPTIONS
.TP
\fB\-f <configuration file>\fP
Specify configuration file path.
\fB\-f <configuration file|dir>\fP
Specify configuration file or directory path. If the argument is a directory
the files (and only files) it containes are added in lexical order (respecting
LC_COLLATE) ; only non hidden files with ".cfg" extension are added.
.TP
\fB\-L <name>\fP