How to stop syncjob flooting syslog

M

mike2012

Renowned Member
Apr 29, 2015
42
1
73
Is there a posibility to stop the flooting of syslog when doing a syncjob with following lines
.
.
Dec 02 08:37:47 .... proxmox-backup-proxy[5327]: GET /chunk
Dec 02 08:37:47 .... proxmox-backup-proxy[5327]: download chunk "/mnt/datastore/......."
.
.

Package versions :
proxmox-backup: 2.3-1 (running kernel: 5.15.74-1-pve)
proxmox-backup-server: 2.3.1-1 (running version: 2.3.1)
pve-kernel-5.15: 7.2-14 pve-kernel-helper: 7.2-14
pve-kernel-5.13: 7.1-9 pve-kernel-5.11: 7.0-10
pve-kernel-5.15.74-1-pve: 5.15.74-1
pve-kernel-5.15.60-2-pve: 5.15.60-2
pve-kernel-5.13.19-6-pve: 5.13.19-15
pve-kernel-5.13.19-2-pve: 5.13.19-4
pve-kernel-5.11.22-7-pve: 5.11.22-12
pve-kernel-5.11.22-4-pve: 5.11.22-9
ifupdown2: 3.1.0-1+pmx3 libjs-extjs: 7.0.0-1
proxmox-backup-docs: 2.3.1-1
proxmox-backup-client: 2.3.1-1
proxmox-mini-journalreader: 1.3-1
proxmox-offline-mirror-helper: 0.5.0-1
proxmox-widget-toolkit: 3.5.3
pve-xtermjs: 4.16.0-1
smartmontools: 7.2-pve3 zfsutils-linux: 2.1.6-pve1
 
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To be precise: The sync job on host A (which pulls data from remote host B) does cause lots of proxmox-backup-proxy logging on host B, not on host A.

I have the same problem, because several servers sync data from a host about every 5-10 minutes, so on the host that data is being pulled from I get over 10 millions of lines weekly in each file /var/log/syslog, /var/log/messages, /var/log/user.log like this:

Code: 
Mar 27 07:12:02 myhost proxmox-backup-proxy[372948]: GET /chunk
Mar 27 07:12:02 myhost proxmox-backup-proxy[372948]: download chunk "/mnt/xxx/yyy/.chunks/4812/4812f61562bc33191f2b67fc4241ee7bdaace3bf6c80e908a609400d5e545419"

So this is the size of my logs:

Code: 
myhost:/var/log# treesize
8.5 GB .
3.1 GB ./journal
2.8 GB ./proxmox-backup
6.6 MB ./pve
389.0 KB ./pveproxy
165.0 KB ./apt
14.0 KB ./vzdump
...

with /bin/treesize being a small script

Bash: 
#/bin/sh
du -k --max-depth=1 --exclude=./{mnt,proc,sys,dev} | sort -nr | awk '
     BEGIN {
        split("KB,MB,GB,TB", Units, ",");
     }
     {
        u = 1;
        while ($1 >= 1024) {
           $1 = $1 / 1024;
           u += 1
        }
        $1 = sprintf("%.1f %s", $1, Units[u]);
        print $0;
     }
    '


In detail:

Code: 
myhost:/var/log# ls -l --sort=size
total 2723026
-rw-r----- 1 root     adm             1464480086 Apr  2 00:00 syslog.1
-rw-r----- 1 root     adm             1461321988 Apr  2 00:00 messages.1
-rw-r----- 1 root     adm             1453339684 Apr  2 00:00 user.log.1
-rw-r----- 1 root     adm              199448555 Apr  3 09:33 syslog
-rw-r----- 1 root     adm              190345787 Mar 12 00:00 syslog.4.gz
-rw-r----- 1 root     adm              189312770 Mar 12 00:00 messages.4.gz
-rw-r----- 1 root     adm              187180469 Mar 12 00:00 user.log.4.gz
-rw-r----- 1 root     adm              176000160 Mar 19 00:00 syslog.3.gz
-rw-r----- 1 root     adm              174973873 Mar 19 00:00 messages.3.gz
-rw-r----- 1 root     adm              173039564 Mar 26 00:00 syslog.2.gz
-rw-r----- 1 root     adm              172901808 Mar 19 00:00 user.log.3.gz
-rw-r----- 1 root     adm              172005297 Mar 26 00:00 messages.2.gz
-rw-r----- 1 root     adm              169877585 Mar 26 00:00 user.log.2.gz
-rw-r----- 1 root     adm              134262887 Apr  3 09:32 daemon.log
-rw-r----- 1 root     adm               65062269 Apr  3 09:33 messages
-rw-r----- 1 root     adm               63347347 Apr  2 17:44 user.log
-rw-r----- 1 root     adm               31611850 Aug 23  2022 syslog.6.gz
-rw-rw-r-- 1 root     utmp              18701432 Apr  3 09:32 lastlog
-rw-r----- 1 root     adm                9060203 Aug 22  2022 syslog.7.gz
-rw-r----- 1 root     adm                7984111 Apr  2 00:00 kern.log.1
-rw-r----- 1 root     adm                7983461 Apr  2 00:00 ufw.log.1
-rw-r----- 1 root     adm                3521684 Apr  2 00:00 auth.log.1
-rw-r----- 1 root     adm                2579205 Apr  2 00:00 daemon.log.1
-rw-r--r-- 1 root     root               2049472 Aug 28  2022 faillog
-rw-r----- 1 root     adm                1967061 Mar 19 00:00 ufw.log.3.gz
-rw-r----- 1 root     adm                1718463 Apr  3 09:33 kern.log
-rw-r----- 1 root     adm                1600728 Apr  3 09:33 ufw.log
-rw-r----- 1 root     adm                1001535 Mar  5 00:00 ufw.log.4.gz
-rw-r----- 1 root     adm                 992632 Mar 12 00:00 kern.log.4.gz
-rw-r----- 1 root     adm                 975374 Mar 19 00:00 kern.log.3.gz
-rw-r----- 1 root     adm                 963214 Mar 26 00:00 kern.log.2.gz
-rw-r----- 1 root     adm                 963214 Mar 26 00:00 ufw.log.2.gz
-rw-r----- 1 root     adm                 709293 Apr  3 09:33 auth.log
-rw-r----- 1 root     adm                 215852 Mar 26 00:00 daemon.log.2.gz
-rw-r----- 1 root     adm                 211768 Mar 19 00:00 daemon.log.3.gz
-rw-r----- 1 root     adm                 210477 Mar 12 00:00 daemon.log.4.gz
-rw-r----- 1 root     adm                 150873 Mar 26 00:00 auth.log.2.gz
-rw-r----- 1 root     adm                 150101 Mar 19 00:00 auth.log.3.gz
-rw-r----- 1 root     adm                 148793 Mar 12 00:00 auth.log.4.gz

myhost:/var/log# grep -c ".*" syslog.1
11714765
myhost:/var/log# grep -c "GET /chunk\|download chunk" syslog.1
11449872

myhost:/var/log# grep -c ".*" messages.1
11688043
myhost:/var/log# grep -c "GET /chunk\|download chunk" messages.1
11449872

myhost:/var/log# grep -c ".*" user.log.1
11657979
myhost:/var/log# grep -c "GET /chunk\|download chunk" user.log.1
11449872

(By the way: when checking out these big files in Windows I recomment LogExpert, because Notepad++ can't handle such big files at all.)

So as you can see /var/log/syslog, /var/log/messages and /var/log/user.log can each grow to over 1 GB in size for just 1 week of logging. Each contain the same GET /chunk and download chunk messages - and those lines make up 98% of their content.

I am not using nested Datastores, and I am not concerned about the size of /var/log/proxmox-backup as mentioned in https://forum.proxmox.com/threads/proxmox-backup-logs.98220/, but I care about syslog and the other 2 files mentioned, because I want to keep them small for being easily searchable.

Can anyone help me out here?
 
I guess the BackupReader used by sync should not set the debug flag ;) could you file an issue at bugzilla.proxmox.com ? thanks!
 
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yes, @ggoller sent a few patches - the scope got a bit bigger as he started reworking the whole server side logging infrastructure..
 
yes, the plan is to improve the control over what gets logged where/when, and expose the knobs to allow opt-in debug logs.
 
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Reactions: ggoller, VictorSTS and t0mz
Hello,

any news on this?

Seems to hit me too, running logcheck, now after upgrade to pve 8

(proxmox-backup-server:amd64/bookworm 3.1.2-1 uptodate)
 
Looks like it didn't make it into PBS v3.2 either?

I need to do something about this and am considering setting up either a dedicated server/VM/LXC and have PBS access the backup drives over the network or in case performance doesn't work out stop using PBS for the time being.
 
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