#!/usr/bin/env perl # IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html package xCAT_monitoring::snmpmon; BEGIN { $::XCATROOT = $ENV{'XCATROOT'} ? $ENV{'XCATROOT'} : '/opt/xcat'; } use lib "$::XCATROOT/lib/perl"; use IO::File; use xCAT::Utils; print "xCAT_monitoring::snmpmon loaded\n"; 1; #------------------------------------------------------------------------------- =head1 xCAT_monitoring:snmpmon =head2 Package Description xCAT monitoring plugin package to handle SNMP monitoring. =cut #------------------------------------------------------------------------------- #-------------------------------------------------------------------------------- =head3 start This function gets called by the monitorctrl module when xcatd starts. Arguments: None. Returns: (return code, message) =cut #-------------------------------------------------------------------------------- sub start { print "snmpmon::start called\n"; $noderef=shift; if ($noderef =~ /xCAT_monitoring::snmpmon/) { $noderef=shift; } # do not turn it on on the service node if (xCAT::Utils->isServiceNode()) { return (0, "");} # unless we are running on linux, exit. #unless($^O eq "linux"){ # exit; # } # check supported snmp package my $cmd; my @snmpPkg = `/bin/rpm -qa | grep snmp`; my $pkginstalled = grep(/net-snmp/, @snmpPkg); if ($pkginstalled) { my ($ret, $err)=configSNMP(); if ($ret != 0) { return ($ret, $err);} } else { return (1, "net-snmp is not installed") } return (0, "started") } #-------------------------------------------------------------------------------- =head3 configSNMP This function puts xcat_traphanlder into the snmptrapd.conf file and restarts the snmptrapd with the new configuration. Arguments: none. Returns: (return code, message) =cut #-------------------------------------------------------------------------------- sub configSNMP { my $cmd; # now move /usr/share/snmptrapd.conf to /usr/share/snmptrapd.conf.orig # if it exists. if (-f "/usr/share/snmp/snmptrapd.conf"){ # if the file exists and has references to xcat_traphandler then # there is nothing that needs to be done. `/bin/grep xcat_traphandler /usr/share/snmp/snmptrapd.conf > /dev/null`; # if the return code is 1, then there is no xcat_traphandler # references and we need to put them in. if($? >> 8){ # back up the original file. `/bin/cp -f /usr/share/snmp/snmptrapd.conf /usr/share/snmp/snmptrapd.conf.orig`; # if the file exists and does not have "authCommunity execute public" then add it. open(FILE1, "/usr/share/snmp/snmptrapd.conf.tmp"); my $found=0; while (readline(FILE1)) { if (/\s*authCommunity.*public/) { $found=1; if (!/\s*authCommunity\s*.*execute.*public/) { s/authCommunity\s*(.*)\s* public/authCommunity $1,execute public/; #modify it to have execute if found } } print FILE $_; } if (!$found) { print FILE "authCommunity execute public\n"; #add new one if not found } # now add the new traphandle commands: print FILE "traphandle default $::XCATROOT/sbin/xcat_traphandler\n"; close($handle); close(FILE); `mv -f /usr/share/snmp/snmptrapd.conf.tmp /usr/share/snmp/snmptrapd.conf`; } } else { # The snmptrapd.conf file does not exists # create the file: open($handle, ">/usr/share/snmp/snmptrapd.conf"); print $handle "authCommunity execute public\n"; print $handle "traphandle default $::XCATROOT/sbin/xcat_traphandler\n"; close($handle); } # TODO: put the mib files to /usr/share/snmp/mibs # get the PID of the currently running snmptrapd if it is running. # then stop it and restart it again so that it reads our new # snmptrapd.conf configuration file. Then the process chomp(my $pid= `/bin/ps -ef | /bin/grep snmptrapd | /bin/grep -v grep | /bin/awk '{print \$2}'`); print "pid=$pid here\n"; if($pid){ `/bin/kill -9 $pid`; } # start it up again! system("/usr/sbin/snmptrapd -m ALL"); # get the PID of the currently running snmpd if it is running. # if it's running then we just leave. Otherwise, if we don't get A PID, then we # assume that it isn't running, and start it up again! chomp(my $pid= `/bin/ps -ef | /bin/grep snmpd | /bin/grep -v grep | /bin/awk '{print \$2}'`); unless($pid){ # start it up again! system("/usr/sbin/snmpd"); } return (0, "started"); } #-------------------------------------------------------------------------------- =head3 stop This function gets called by the monitorctrl module when xcatd stops. Arguments: none Returns: (return code, message) =cut #-------------------------------------------------------------------------------- sub stop { print "snmpmon::stop called\n"; # do not turn it on on the service node if (xCAT::Utils->isServiceNode()) { return (0, "");} if (-f "/usr/share/snmp/snmptrapd.conf.orig"){ # copy back the old one `mv -f /usr/share/snmp/snmptrapd.conf.orig /usr/share/snmp/snmptrapd.conf`; } else { if (-f "/usr/share/snmp/snmptrapd.conf"){ # if the file exists, delete all entries that have xcat_traphandler my $cmd = "grep -v xcat_traphandler /usr/share/snmp/snmptrapd.conf "; $cmd .= "> /usr/share/snmp/snmptrapd.conf.unconfig "; `$cmd`; # move it back to the snmptrapd.conf file. `mv -f /usr/share/snmp/snmptrapd.conf.unconfig /usr/share/snmp/snmptrapd.conf`; } } # now check to see if the daemon is running. If it is then we need to resart or stop? # it with the new snmptrapd.conf file that will not forward events to RMC. chomp(my $pid= `/bin/ps -ef | /bin/grep snmptrapd | /bin/grep -v grep | /bin/awk '{print \$2}'`); print "pid=$pid\n"; if($pid){ `/bin/kill -9 $pid`; # start it up again! #system("/usr/sbin/snmptrapd"); } return (0, "stopped"); } #-------------------------------------------------------------------------------- =head3 supportNodeStatusMon This function is called by the monitorctrl module to check if SNMP can help monitoring and returning the node status. SNMP does not support this function. Arguments: none Returns: 1 =cut #-------------------------------------------------------------------------------- sub supportNodeStatusMon { return 0; } #-------------------------------------------------------------------------------- =head3 startNodeStatusMon This function is called by the monitorctrl module to tell SNMP to start monitoring the node status and feed them back to xCAT. SNMP does not have this support. Arguments: None. Returns: (return code, message) =cut #-------------------------------------------------------------------------------- sub startNodeStatusMon { return (1, "This function is not supported."); } #-------------------------------------------------------------------------------- =head3 stopNodeStatusMon This function is called by the monitorctrl module to tell SNMP to stop feeding the node status info back to xCAT. SNMP does not support this function. Arguments: none Returns: (return code, message) =cut #-------------------------------------------------------------------------------- sub stopNodeStatusMon { return (1, "This function is not supported."); } #-------------------------------------------------------------------------------- =head3 addNodes This function adds the nodes into the SNMP domain. Arguments: nodes --nodes to be added. It is a hash reference keyed by the monitoring server nodes and each value is a ref to an array of [nodes, nodetype, status] arrays monitored by the server. So the format is: {monserver1=>[['node1', 'osi', 'active'], ['node2', 'switch', 'booting']...], ...} verbose -- verbose mode. 1 for yes, 0 for no. Returns: none =cut #-------------------------------------------------------------------------------- sub addNodes { return 0; } #-------------------------------------------------------------------------------- =head3 removeNodes This function removes the nodes from the SNMP domain. Arguments: nodes --nodes to be removed. It is a hash reference keyed by the monitoring server nodes and each value is a ref to an array of [nodes, nodetype, status] arrays monitored by the server. So the format is: {monserver1=>[['node1', 'osi', 'active'], ['node2', 'switch', 'booting']...], ...} verbose -- verbose mode. 1 for yes, 0 for no. Returns: none =cut #-------------------------------------------------------------------------------- sub removeNodes { return 0; } #-------------------------------------------------------------------------------- =head3 processSettingChanges This function gets called when the setting for this monitoring plugin has been changed in the monsetting table. Arguments: none. Returns: 0 for successful. non-0 for not successful. =cut #-------------------------------------------------------------------------------- sub processSettingChanges { return 0; } #-------------------------------------------------------------------------------- =head3 getDiscription This function returns the detailed description of the plugin inluding the valid values for its settings in the monsetting tabel. Arguments: none Returns: The description. =cut #-------------------------------------------------------------------------------- sub getDescription { return " Description: snmpmon sets up the snmptrapd on the management server to receive SNMP traps for different nodes. It also sets the trap destination for Blade Center Managment Module, RSA II, IPMIs that are managed by the xCAT cluster. By default, the xCAT trap handler will log all events in the syslog and only email the critial and the warning events to the mail aliance called 'alerts'. You can use the settings to override the default behavior. Use command 'startmon snmpmon' to star monitoring and 'stopmon snmpmon' to stop it. The SNMP trap handler is disabled on the service node. Settings: ignore: specifies the events that will be ignored. It's a comma separated pairs of oid=value. For example, BLADESPPALT-MIB::spTrapAppType=4,BLADESPPALT-MIB::spTrapAppType=4. emailrsp: specifies the events that will get email notification.\n" }