haproxy -v do not respect -q

[aqueos]

Detailed Description of the Problem

hi,

there is a lot of time where we need to know the version of haproxy but we have to play with regex to get it from the command line :)

 HAProxy version 2.4.25-1~bpo10+1 2023/12/16 - https://haproxy.org/
Status: long-term supported branch - will stop receiving fixes around Q2 2026.
Known bugs: http://www.haproxy.org/bugs/bugs-2.4.25.html
Running on: Linux 6.2.0-37-generic #38~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Nov  2 18:01:13 UTC 2 x86_64

logicaly haproxy -v -q should only output

2.4.25

but haproxy ignore the -q

Expected Behavior

-q should be taken in account and return only the version

Steps to Reproduce the Behavior

type haproxy -v and haproxy -v -q

Do you have any idea what may have caused this?

No response

Do you have an idea how to solve the issue?

add -q case in the -v code :D

What is your configuration?

haproxy 18 to 2.8

Output of haproxy -vv

not necessary

Last Outputs and Backtraces

No response

Additional Information

No response

[wtarreau]

Switched this to a feature request as you're requesting a change of behavior.

Interestingly you expect to see "2.4.25" being returned while most others would expect to see the full version, which is "2.4.25-1bpo10+1" in your case. I'm not for changing the default output format as it would break for basically all those who, like you, parse the output. But maybe we could add new "-v*" fields, e.g. -vq to display "2.4.25-1bpo10+1" and maybe -vqs to show the shorter version "2.4.25". These are just ideas on the top of my head, I haven't thought about this deeper.

[aqueos]

hi,

fine with me :)

About the revision number of debian if i want the package version i could use dpkg for that, here this is haproxy version.

I think the most intresting part for -vq ( or -vqq ;p) is the major/minor version because haproxy is feature compatible by major+minor version, so the shorter return could be the one returning the "feature version" like 2.2, 2.9 3.0 etc... corresponding to the feature and compatibility of it.

best regards,
Ghislain

[TimWolla]

Do you need to know the version or do you just need to know whether it is higher or lower than a given version? The latter is already possible via:

haproxy -cc "version_atleast(2.4)"

[wtarreau]

I agree with Tim here, when checking for compatibility, -cc is definitely the way to go. We're using it extensively in the regression tests now, that's super convenient.

[aqueos]

it does not seems to work for me in version less than 2.7 (i dont have all versions but...)

LXD_GUEST:root@:[~]: haproxy -v
HAProxy version 2.4.25-1~bpo11+1 2023/12/16 - https://haproxy.org/
Status: long-term supported branch - will stop receiving fixes around Q2 2026.
Known bugs: http://www.haproxy.org/bugs/bugs-2.4.25.html
Running on: Linux 6.6.17-060617-generic #202402161835 SMP PREEMPT_DYNAMIC Fri Feb 16 18:55:44 UTC 2024 x86_64

LXD_GUEST:root@:[~]: haproxy -cc "version_atleast(2.4)"
HAProxy version 2.4.25-1~bpo11+1 2023/12/16 - https://haproxy.org/
Status: long-term supported branch - will stop receiving fixes around Q2 2026.
Known bugs: http://www.haproxy.org/bugs/bugs-2.4.25.html
Running on: Linux 6.6.17-060617-generic #202402161835 SMP PREEMPT_DYNAMIC Fri Feb 16 18:55:44 UTC 2024 x86_64
Usage : haproxy [-f <cfgfile|cfgdir>]* [ -vdVD ] [ -n <maxconn> ] [ -N <maxpconn> ]
        [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]
        -v displays version ; -vv shows known build options.
        -d enters debug mode ; -db only disables background mode.
        -dM[<byte>] poisons memory with <byte> (defaults to 0x50)
        -V enters verbose mode (disables quiet mode)
        -D goes daemon ; -C changes to <dir> before loading files.
        -W master-worker mode.
        -Ws master-worker mode with systemd notify support.
        -q quiet mode : don't display messages
        -c check mode : only check config files and exit
        -n sets the maximum total # of connections (uses ulimit -n)
        -m limits the usable amount of memory (in MB)
        -N sets the default, per-proxy maximum # of connections (0)
        -L set local peer name (default to hostname)
        -p writes pids of all children to this file
        -de disables epoll() usage even when available
        -dp disables poll() usage even when available
        -dS disables splice usage (broken on old kernels)
        -dG disables getaddrinfo() usage
        -dR disables SO_REUSEPORT usage
        -dL dumps loaded object files after config checks
        -dr ignores server address resolution failures
        -dV disables SSL verify on servers side
        -dW fails if any warning is emitted
        -dD diagnostic mode : warn about suspicious configuration statements
        -sf/-st [pid ]* finishes/terminates old pids.
        -x <unix_socket> get listening sockets from a unix socket
        -S <bind>[,<bind options>...] new master CLI

[TimWolla]

it does not seems to work for me in version less than 2.7 (i dont have all versions but...)

It's available as of HAProxy 2.5.

[wtarreau]

Which means that if not supported, it's <2.5 hence possibly 2.4 for you :-)

[aqueos]

yes most of my installs are 2.4, i will jump to 2.8.
FYI i use the version in a puppet fact then use this fact to create the config file with a template and i was thinking it would be great if the "quiet" flag worked with -v so it just not look a bunch of grep |cut that could break anytime if the output format change :)