bbd920a50c
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@636 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
304 lines
9.7 KiB
Perl
304 lines
9.7 KiB
Perl
#!/usr/bin/env perl
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# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
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package xCAT_monitoring::snmpmon;
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BEGIN
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{
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$::XCATROOT = $ENV{'XCATROOT'} ? $ENV{'XCATROOT'} : '/opt/xcat';
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}
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use lib "$::XCATROOT/lib/perl";
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use IO::File;
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print "xCAT_monitoring::snmpmon loaded\n";
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1;
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#-------------------------------------------------------------------------------
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=head1 xCAT_monitoring:snmpmon
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=head2 Package Description
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xCAT monitoring plugin package to handle SNMP monitoring.
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=cut
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#-------------------------------------------------------------------------------
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#--------------------------------------------------------------------------------
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=head3 start
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This function gets called by the monitorctrl module
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when xcatd starts.
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Arguments:
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monservers --A hash reference keyed by the monitoring server nodes
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and each value is a ref to an array of [nodes, nodetype, status] arrays
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monitored by the server. So the format is:
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{monserver1=>[['node1', 'osi', 'active'], ['node2', 'switch', 'booting']...], ...}
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Returns:
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(return code, message)
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=cut
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#--------------------------------------------------------------------------------
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sub start {
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print "snmpmon::start called\n";
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$noderef=shift;
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if ($noderef =~ /xCAT_monitoring::snmpmon/) {
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$noderef=shift;
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}
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# unless we are running on linux, exit.
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#unless($^O eq "linux"){
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# exit;
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# }
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# check supported snmp package
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my $cmd;
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my @snmpPkg = `/bin/rpm -qa | grep snmp`;
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my $pkginstalled = grep(/net-snmp/, @snmpPkg);
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if ($pkginstalled) {
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my ($ret, $err)=configSNMP();
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if ($ret != 0) { return ($ret, $err);}
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} else {
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return (1, "net-snmp is not installed")
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}
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return (0, "started")
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}
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#--------------------------------------------------------------------------------
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=head3 configSNMP
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This function puts xcat_traphanlder into the snmptrapd.conf file and
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restarts the snmptrapd with the new configuration.
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Arguments:
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none.
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Returns:
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(return code, message)
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=cut
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#--------------------------------------------------------------------------------
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sub configSNMP {
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my $cmd;
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# now move /usr/share/snmptrapd.conf to /usr/share/snmptrapd.conf.orig
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# if it exists.
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if (-f "/usr/share/snmp/snmptrapd.conf"){
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# if the file exists and has references to xcat_traphandler then
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# there is nothing that needs to be done.
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`/bin/grep xcat_traphandler /usr/share/snmp/snmptrapd.conf > /dev/null`;
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# if the return code is 1, then there is no xcat_traphandler
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# references and we need to put them in.
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if($? >> 8){
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# back up the original file.
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`/bin/cp -f /usr/share/snmp/snmptrapd.conf /usr/share/snmp/snmptrapd.conf.orig`;
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# if the file exists and does not have "authCommunity execute public" then add it.
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open(FILE1, "</usr/share/snmp/snmptrapd.conf");
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open(FILE, ">/usr/share/snmp/snmptrapd.conf.tmp");
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my $found=0;
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while (readline(FILE1)) {
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if (/\s*authCommunity.*public/) {
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$found=1;
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if (!/\s*authCommunity\s*.*execute.*public/) {
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s/authCommunity\s*(.*)\s* public/authCommunity $1,execute public/; #modify it to have execute if found
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}
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}
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print FILE $_;
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}
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if (!$found) {
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print FILE "authCommunity execute public\n"; #add new one if not found
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}
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# now add the new traphandle commands:
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print FILE "traphandle default $::XCATROOT/sbin/xcat_traphandler\n";
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close($handle);
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close(FILE);
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`mv -f /usr/share/snmp/snmptrapd.conf.tmp /usr/share/snmp/snmptrapd.conf`;
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}
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}
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else { # The snmptrapd.conf file does not exists
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# create the file:
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open($handle, ">/usr/share/snmp/snmptrapd.conf");
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print $handle "authCommunity execute public\n";
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print $handle "traphandle default $::XCATROOT/sbin/xcat_traphandler\n";
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close($handle);
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}
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# TODO: put the mib files to /usr/share/snmp/mibs
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# get the PID of the currently running snmptrapd if it is running.
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# then stop it and restart it again so that it reads our new
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# snmptrapd.conf configuration file. Then the process
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chomp(my $pid= `/bin/ps -ef | /bin/grep snmptrapd | /bin/grep -v grep | /bin/awk '{print \$2}'`);
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print "pid=$pid here\n";
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if($pid){
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`/bin/kill -9 $pid`;
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}
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# start it up again!
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system("/usr/sbin/snmptrapd -m ALL");
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# get the PID of the currently running snmpd if it is running.
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# if it's running then we just leave. Otherwise, if we don't get A PID, then we
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# assume that it isn't running, and start it up again!
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chomp(my $pid= `/bin/ps -ef | /bin/grep snmpd | /bin/grep -v grep | /bin/awk '{print \$2}'`);
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unless($pid){
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# start it up again!
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system("/usr/sbin/snmpd");
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}
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return (0, "started");
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}
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#--------------------------------------------------------------------------------
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=head3 stop
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This function gets called by the monitorctrl module when
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xcatd stops.
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Arguments:
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none
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Returns:
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(return code, message)
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=cut
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#--------------------------------------------------------------------------------
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sub stop {
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print "snmpmon::stop called\n";
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if (-f "/usr/share/snmp/snmptrapd.conf.orig"){
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# copy back the old one
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`mv -f /usr/share/snmp/snmptrapd.conf.orig /usr/share/snmp/snmptrapd.conf`;
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} else {
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if (-f "/usr/share/snmp/snmptrapd.conf"){
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# if the file exists, delete all entries that have xcat_traphandler
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my $cmd = "grep -v xcat_traphandler /usr/share/snmp/snmptrapd.conf ";
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$cmd .= "> /usr/share/snmp/snmptrapd.conf.unconfig ";
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`$cmd`;
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# move it back to the snmptrapd.conf file.
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`mv -f /usr/share/snmp/snmptrapd.conf.unconfig /usr/share/snmp/snmptrapd.conf`;
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}
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}
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# now check to see if the daemon is running. If it is then we need to resart or stop?
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# it with the new snmptrapd.conf file that will not forward events to RMC.
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chomp(my $pid= `/bin/ps -ef | /bin/grep snmptrapd | /bin/grep -v grep | /bin/awk '{print \$2}'`);
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print "pid=$pid\n";
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if($pid){
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`/bin/kill -9 $pid`;
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# start it up again!
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#system("/usr/sbin/snmptrapd");
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}
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return (0, "stopped");
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}
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#--------------------------------------------------------------------------------
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=head3 supportNodeStatusMon
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This function is called by the monitorctrl module to check
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if SNMP can help monitoring and returning the node status.
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SNMP does not support this function.
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Arguments:
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none
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Returns:
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1
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=cut
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#--------------------------------------------------------------------------------
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sub supportNodeStatusMon {
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print "snmpmon::supportNodeStatusMon called\n";
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return 0;
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}
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#--------------------------------------------------------------------------------
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=head3 startNodeStatusMon
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This function is called by the monitorctrl module to tell
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SNMP to start monitoring the node status and feed them back
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to xCAT. SNMP does not have this support.
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Arguments:
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monservers --A hash reference keyed by the monitoring server nodes
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and each value is a ref to an array of [nodes, nodetype, status] arrays
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monitored by the server. So the format is:
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{monserver1=>[['node1', 'osi', 'active'], ['node2', 'switch', 'booting']...], ...}
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Returns:
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(return code, message)
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=cut
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#--------------------------------------------------------------------------------
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sub startNodeStatusMon {
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print "snmpmon::startNodeStatusMon called\n";
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return (1, "This function is not supported.");
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}
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#--------------------------------------------------------------------------------
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=head3 stopNodeStatusMon
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This function is called by the monitorctrl module to tell
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SNMP to stop feeding the node status info back to xCAT.
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SNMP does not support this function.
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Arguments:
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none
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Returns:
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(return code, message)
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=cut
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#--------------------------------------------------------------------------------
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sub stopNodeStatusMon {
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print "snmpmon::stopNodeStatusMon called\n";
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return (1, "This function is not supported.");
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}
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#--------------------------------------------------------------------------------
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=head3 addNodes
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This function adds the nodes into the SNMP domain.
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Arguments:
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nodes --nodes to be added. It is a hash reference keyed by the monitoring server
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nodes and each value is a ref to an array of [nodes, nodetype, status] arrays monitored
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by the server. So the format is:
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{monserver1=>[['node1', 'osi', 'active'], ['node2', 'switch', 'booting']...], ...}
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verbose -- verbose mode. 1 for yes, 0 for no.
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Returns:
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none
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=cut
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#--------------------------------------------------------------------------------
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sub addNodes {
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my $noderef=shift;
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if ($noderef =~ /xCAT_monitoring::snmpmon/) {
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$noderef=shift;
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}
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print "snmpmon::addNodes get called\n";
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return 0;
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}
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#--------------------------------------------------------------------------------
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=head3 removeNodes
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This function removes the nodes from the SNMP domain.
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Arguments:
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nodes --nodes to be removed. It is a hash reference keyed by the monitoring server
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nodes and each value is a ref to an array of [nodes, nodetype, status] arrays monitored
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by the server. So the format is:
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{monserver1=>[['node1', 'osi', 'active'], ['node2', 'switch', 'booting']...], ...}
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verbose -- verbose mode. 1 for yes, 0 for no.
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Returns:
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none
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=cut
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#--------------------------------------------------------------------------------
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sub removeNodes {
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my $noderef=shift;
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if ($noderef =~ /xCAT_monitoring::snmpmon/) {
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$noderef=shift;
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}
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print "snmpmon::removeNodes called\n";
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return 0;
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}
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