Pmgmirror could not create socket: Too many open files

A

AnNH

New Member
Mar 24, 2022
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0
1
Dear team,

We are facing pmgmirror error on Mail Proxmox Gateway as follows:

Code: 
root@pmg1:~# journalctl -u pmgmirror | tail -20
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg2' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=9;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg3' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=13;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg4' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=10;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg5' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=11;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg6' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=26;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg7' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=3;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg8' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=32;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg9' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=5;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg10' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=12;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg11' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=28;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg12' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=17;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg13' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=14;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
Mar 24 17:40:25 pmg8 pmgmirror[1203]: database sync 'pmg14' failed - DBI connect('dbname=Proxmox_ruledb;host=/run/pmgtunnel;port=6;','root',...) failed: could not create socket: Too many open files at /usr/share/perl5/PMG/DBTools.pm line 66.
......................
Mar 24 17:40:25 pmg8 pmgmirror[1203]: cluster synchronization finished  (31 errors, 0.01 seconds (files 0.00, database 0.01, config 0.00))

We have check log in /var/log/postgresql/postgresql-13-main.log only see this log when we change setting in pgsql config file in /etc/pmg/templates/, max connection, shared_buffer, max_files_per_process and restart services.

Code: 
2022-03-24 16:49:01.440 +07 [30468] LOG:  starting PostgreSQL 13.3 (Debian 13.3-1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 10.2.1-6) 10.2.1 20210110, 64-bit
2022-03-24 16:49:01.441 +07 [30468] LOG:  listening on IPv6 address "::1", port 5432
2022-03-24 16:49:01.441 +07 [30468] LOG:  listening on IPv4 address "127.0.0.1", port 5432
2022-03-24 16:49:01.444 +07 [30468] LOG:  listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
2022-03-24 16:49:01.456 +07 [30469] LOG:  database system was shut down at 2022-03-24 16:49:01 +07
2022-03-24 16:49:01.469 +07 [30468] LOG:  database system is ready to accept connections

My version:

root@pmg1:/etc/pmg/templates# pmgversion -v
proxmox-mailgateway-container: 7.0-1 (API: 7.0-8/36f2537c, running kernel: 5.4.157-1-pve)
pmg-gui: 3.0-5
clamav-daemon: 0.103.3+dfsg-0+deb11u1
ifupdown: residual config
ifupdown2: 3.1.0-1+pmx3
libarchive-perl: 3.4.0-1
libjs-extjs: 7.0.0-1
libjs-framework7: 4.4.7-1
libproxmox-acme-perl: 1.3.0
libproxmox-acme-plugins: 1.3.0
libpve-apiclient-perl: 3.2-1
libpve-common-perl: 7.0-10
libpve-http-server-perl: 4.0-2
libxdgmime-perl: 1.0-1
lvm2: not correctly installed
pmg-docs: 7.0-2
pmg-i18n: 2.5-1
pmg-log-tracker: 2.2.0-1
postgresql-13: 13.3-1
proxmox-mini-journalreader: 1.2-1
proxmox-spamassassin: 3.4.6-3
proxmox-widget-toolkit: 3.3-6
pve-xtermjs: 4.12.0-1
 
how many nodes are in your cluster? the mirroring does not really scale that well for many nodes. it's designed for a couple at max, not >10
 
Hi,

Thanks for your information,

Currently we have 32 nodes on the system.

Best regards !
 
as i said, running clusters this big is not really recommended or tested...
that said, you could try to increase the open file limit for that service

with
Code: 
systemctl edit pmgmirror.service
an editor opens, and you have to add
Code: 
[Service]
LimitNOFileSoft=4096

for 4 times the open file limit (the default is 1024)
you can ofc try to set it even higher...

after that you have to restart the service
 
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