[MacPorts] #42474: munin: all plugins fail with "can't drop privileges: setrgid() not implemented at /opt/local/lib/perl5/site_perl/5.12.4/Munin/Node/OS.pm line 261"

[MacPorts]

#42474: munin: all plugins fail with "can't drop privileges: setrgid() not
implemented at /opt/local/lib/perl5/site_perl/5.12.4/Munin/Node/OS.pm line
261"
------------------------------+--------------------------------
 Reporter:  pierre.bauduin@…  |      Owner:  macports-tickets@…
     Type:  defect            |     Status:  new
 Priority:  Normal            |  Milestone:
Component:  ports             |    Version:  2.2.1
 Keywords:                    |       Port:
------------------------------+--------------------------------
 On a brand new iMac running MacOSX 10.9 "Mavericks", I clean installed the
 '''munin''' port.

 This port is the equivalent of the munin-node package on Debian. Basically
 it listens on port 4949 from the munin server. Commands from the munin
 server can be "list" to list all available plugins or "fetch <plugin>" to
 fetch a particular plugin. One can easily test the plugins by doing telnet
 127.0.0.1 4949 then fetch <plugin>

 == Problem ==
 All munin plugins fail with "#Bad exit":

 {{{
 telnet 127.0.0.1 4949
 Trying 127.0.0.1...
 Connected to localhost.
 Escape character is
 # munin node at albert
 list
 df df_inode http_loadtime if_en0 if_err_en0 load lpstat netstat ntp_offset
 processes users
 fetch load
 # Bad exit
 .
 fetch users
 # Bad exit
 .
 }}}

 Let's look what is going in the log file'''/opt/local/var/log/munin/munin-
 node.log''':

 {{{
 2014/02/12-17:30:06 [27043]     2014/02/12-17:30:06 [27061] Plugin 'users'
 Can't drop privileges: setruid() not implemented at
 /opt/local/lib/perl5/site_perl/5.12.4/Munin/Node/OS.pm line 261, <STDIN>
 line 19.\n. Bailing out.
 2014/02/12-17:30:06 [27043]     2014/02/12-17:30:06 [27063] Plugin
 'if_err_en0' Can't drop privileges: setruid() not implemented at
 /opt/local/lib/perl5/site_perl/5.12.4/Munin/Node/OS.pm line 261, <STDIN>
 line 21.\n. Bailing out.
 2014/02/12-17:30:06 [27043]     2014/02/12-17:30:06 [27065] Plugin 'df'
 Can't drop privileges: setruid() not implemented at
 /opt/local/lib/perl5/site_perl/5.12.4/Munin/Node/OS.pm line 261, <STDIN>
 line 23.\n. Bailing out.
 2014/02/12-17:30:06 [27043]     2014/02/12-17:30:06 [27067] Plugin
 'netstat' Can't drop privileges: setruid() not implemented at
 /opt/local/lib/perl5/site_perl/5.12.4/Munin/Node/OS.pm line 261, <STDIN>
 line 25.\n. Bailing out.
 2014/02/12-17:30:06 [27043]     2014/02/12-17:30:06 [27069] Plugin
 'lpstat' Can't drop privileges: setruid() not implemented at
 /opt/local/lib/perl5/site_perl/5.12.4/Munin/Node/OS.pm line 261, <STDIN>
 line 27.\n. Bailing out.
 2014/02/12-17:30:06 [27043]     2014/02/12-17:30:06 [27071] Plugin 'load'
 Can't drop privileges: setruid() not implemented at
 /opt/local/lib/perl5/site_perl/5.12.4/Munin/Node/OS.pm line 261, <STDIN>
 line 29.\n. Bailing out.
 }}}


 == Solution ==
 The problem is actually in file '''/opt/local/etc/munin/munin-
 node.conf'''.
 Just change the user and group to:

 {{{
 user munin
 group munin
 }}}

 Load and unload the munin-node plist:

 {{{
 sudo launchctl unload /Library/LaunchDaemons/org.macports.munin-node.plist
 sudo launchctl load /Library/LaunchDaemons/org.macports.munin-node.plist
 }}}

 ... and the munin plugins now run perfectly.


 {{{
 telnet 127.0.0.1 4949
 Trying 127.0.0.1...
 Connected to localhost.
 Escape character is
 # munin node at albert
 fetch cpu
 system.value 0
 user.value 1
 idle.value 99
 .
 fetch users
 tty.value 7
 pty.value 0
 pts.value 0
 X.value 0
 other.value 1
 .

 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/42474>
MacPorts <http://www.macports.org/>
Ports system for OS X