I learned about `multips` and `multips_memory` today but found that I couldn’t use them for my purposes.
The main problem is that both of them depend on the process name. Let me illustrate the problem:
# ps -eo rss,comm ... 29908 /home/alex/farm 30836 /home/alex/farm 7596 /home/alex/farm 24156 /home/alex/farm ...
But I want to match on the command name:
# ps -eo rss,command ... 29908 /home/alex/farm/communitywiki2.pl 30836 /home/alex/farm/campaignwiki2.pl 7596 /home/alex/farm/emacswiki2.pl 24156 /home/alex/farm/oddmuse2.pl
Furthermore, I can’t rely on `awk` splitting and looking at `$2` because I want to match on the arguments as well. These three processes are distinct:
# ps -eo rss,command|grep gopher|grep -v grep 4008 /home/alex/perl5/perlbrew/perls/perl-5.26.1/bin/perl /home/alex/farm/gopher-server.pl --setsid --user=alex --group=alex --host=alexschroeder.ch --port=79 --log_level=3 --log_file=/home/alex/farm/finger-server.log --pid_file=/home/alex/farm/finger-server.pid --wiki=/home/alex/farm/wiki.pl --wiki_dir=/home/alex/alexschroeder --wiki_pages=alex --wiki_pages=About --wiki_pages=Contact 26240 /home/alex/perl5/perlbrew/perls/perl-5.26.1/bin/perl /home/alex/farm/gopher-server.pl --setsid --user=alex --group=alex --host=alexschroeder.ch --port=7443 --log_level=3 --log_file=/home/alex/farm/gopher-server-ssl.log --pid_file=/home/alex/farm/gopher-server-ssl.pid --wiki=/home/alex/farm/wiki.pl --wiki_dir=/home/alex/alexschroeder --wiki_pages=SiteMap --wiki_pages=About --wiki_pages=Gopher --menu=Moku_Pona_Updates --menu_file=/home/alex/.moku-pona/updates.txt --menu=Moku_Pona_Sites --menu_file=/home/alex/.moku-pona/sites.txt --wiki_cert_file=/var/lib/dehydrated/certs/alexschroeder.ch/fullchain.pem --wiki_key_file=/var/lib/dehydrated/certs/alexschroeder.ch/privkey.pem 19776 /home/alex/perl5/perlbrew/perls/perl-5.26.1/bin/perl /home/alex/farm/gopher-server.pl --setsid --user=alex --group=alex --host=alexschroeder.ch --port=70 --log_level=3 --log_file=/home/alex/farm/gopher-server.log --pid_file=/home/alex/farm/gopher-server.pid --wiki=/home/alex/farm/wiki.pl --wiki_dir=/home/alex/alexschroeder --wiki_pages=SiteMap --wiki_pages=About --wiki_pages=Gopher --menu=Moku_Pona_Updates --menu_file=/home/alex/.moku-pona/updates.txt --menu=Moku_Pona_Sites --menu_file=/home/alex/.moku-pona/sites.txt
That’s a Gopher server listening on ports 70 (Gohper), 79 (Finger), and 7443 (TLS Gopher).
Anyway, I made some changes.
For `multips` I got rid of the overly restricted regular expressions:
# diff /usr/share/munin/plugins/multips /etc/munin/plugins/alex_multips
8,9c8,9
< multips - Munin plugin to monitor number of processes. Which processes
< are configured in client-conf.d
---
> alex_multips - Munin plugin to monitor number of processes. Which
> processes are configured in client-conf.d
19,25c19,20
< [multips]
< env.names pop3d imapd sslwrap
< env.regex_imapd ^[0-9]* imapd:
< env.regex_pop3d ^[0-9]* pop3d:
<
< The regex parts are not needed if the name given in "names" can be
< used to grep with directly.
---
> [alex_multips]
> env.names perl6
26a22,23
> The regexp environment variables have been removed.
>
30,31c27
< configured regular expressions. The regular expressions are
< interpreted by "grep" (and not egrep or perl).
---
> command name.
80d75
< eval REGEX='"${regex_'$name'-\<'$name'\>}"'
84c79
< echo "$fieldname.info Processes matching this regular expression: /$REGEX/"
---
> echo "$fieldname.info Processes matching $name"
95d89
< eval REGEX='"${regex_'$name'-\<'$name'\>}"'
98c92
< $PGREP -f -l "$name" | grep "$REGEX" | wc -l
---
> $PGREP -f -l "$name" | wc -l
101c95
< /usr/ucb/ps auxwww | grep "$REGEX" | grep -v grep | wc -l
---
> /usr/ucb/ps auxwww | grep -v grep | wc -l
103c97
< ps auxwww | grep "$REGEX" | grep -v grep | wc -l
---
> ps auxwww | grep -v grep | wc -l
For `multips_memory` I got rid of the overly restricted regular expressions, but this time in the `awk` script at the end, and I use `command` instead of `comm` in the ps format.
# diff /usr/share/munin/plugins/multips_memory /etc/munin/plugins/alex_multips_memory 8c8 < multips_memory - Munin plugin to monitor memory usage of processes. Which --- > alex_multips_memory - Munin plugin to monitor memory usage of processes. Which 15c15 < ps -eo rss,comm --- > ps -eo rss,command 19c19 < You must specify what process names to monitor: --- > You must specify what commands to monitor: 21c21 < [multips_memory] --- > [alex_multips_memory] 28d27 < 42,43c41,43 < /etc/munin/plugins or /etc/opt/munin/plugins), eg. multips_memory_rss and < multips_memory_vsize as symlinks to multips_memory and configure them thus: --- > /etc/munin/plugins or /etc/opt/munin/plugins), eg. multips_memory_rss > and multips_memory_vsize as symlinks to alex_multips_memory and > configure them thus: 58d57 < 77,81d75 < Only the executable name is matched against (ps -eo comm)1, and it must < be a full string match to the executable base name, not substring, < unless you enter a name such as ".*apache" since RE meta characters in < the names are active. < 95a90,91 > Switching from comm to command by Alex Schroeder <alex@gnu.org> > 129,130d124 < eval REGEX='^$name