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https://github.com/xcat2/xcat-core.git
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Added support for node status monitoring
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@99 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
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linggao
169
xCAT-server-2.0/usr/lib/xcat/monitoring/xcatmon.pm
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169
xCAT-server-2.0/usr/lib/xcat/monitoring/xcatmon.pm
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#!/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::xcatmon;
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#use xCAT::NodeRange;
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#use Socket;
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#use xCAT::Utils;
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use xCAT::GlobalDef;
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use xCAT::Utils;
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#caches the current node status. (serve1=>{active=>[node1,node3...], unreachable=>[node2, node4..]},....)
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$flag;
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1;
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#-------------------------------------------------------------------------------
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=head1 xCAT_monitoring:xcatmon
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=head2 Package Description
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This is a xCAT monitoring plugin. The only thing that this plug-in does is
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the node 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] arrays
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monitored by the server. So the format is:
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{monserver1=>[['node1', 'osi'], ['node2', 'switch']...], ...}
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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 "xcatmon.start\n";
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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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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 this product can help monitoring and returning the node status.
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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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return 1;
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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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the product to start monitoring the node status and feed them back
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to xCAT.
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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] arrays
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monitored by the server. So the format is:
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{monserver1=>[['node1', 'osi'], ['node2', 'switch']...], ...}
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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 "xcatmon.startNodeStatusMon\n";
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my $newentry="*/1 * * * * /usr/sbin/xcatnodemon >> /var/log/xcatmon.log";
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my ($code, $msg)=xCAT::Utils::add_cron_job($newentry);
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if ($code==0) { return (0, "started"); }
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else { return ($code, $msg); }
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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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the product to stop feeding the node status info back to xCAT.
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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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#TODO: turn off the node status monitoring.
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my $job="/usr/sbin/xcatnodemon";
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my ($code, $msg)=xCAT::Utils::remove_cron_job($job);
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if ($code==0) { return (0, "stopped"); }
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else { return ($code, $msg); }
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}
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#--------------------------------------------------------------------------------
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=head3 addNodes
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This function is called by the monitorctrl module when new nodes are added
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to the xCAT cluster. It should add the nodes into the product for monitoring.
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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] arrays monitored
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by the server. So the format is:
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{monserver1=>[['node1', 'osi'], ['node2', 'switch']...], ...}
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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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#print "xcatmon:addNodes called\n";
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#TODO: include the nodes into the product for monitoring.
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return;
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}
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#--------------------------------------------------------------------------------
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=head3 removeNodes
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This function is called by the monitorctrl module when nodes are removed
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from the xCAT cluster. It should remove the nodes from the product for monitoring.
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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] arrays monitored
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by the server. So the format is:
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{monserver1=>[['node1', 'osi'], ['node2', 'switch']...], ...}
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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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#print "xcatmon:removeNodes called\n";
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#TODO: remove the nodes from the product for monitoring.
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return;
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}
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103
xCAT-server-2.0/usr/sbin/xcatnodemon
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103
xCAT-server-2.0/usr/sbin/xcatnodemon
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@@ -0,0 +1,103 @@
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#!/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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use xCAT::Table;
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use xCAT::GlobalDef;
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require("/usr/lib/xcat/monitoring/monitorctrl.pm");
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#################################################################
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# This script is used as a cron job by the xCAT monitoring plug-in
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# to monitor the node status
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##################################################################
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($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst)=localtime(time);
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printf "%2d-%02d-%04d %02d:%02d:%02d: xcatnodemon started.\n", $mon+1,$mday,$year+1900,$hour,$min,$sec;
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#get saved node status from the nodelist table
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my %nodes_status_old=xCAT_monitoring::monitorctrl::getNodeStatus();
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#get a list of nodes
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my $tmp_node_active=$nodes_status_old{$::STATUS_ACTIVE};
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my $tmp_node_inactive=$nodes_status_old{$::STATUS_INACTIVE};
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my $tmp_node_unknown=$nodes_status_old{unknown};
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#print "active nodes: @$tmp_node_active\n";
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#print "inactive nodes: @$tmp_node_inactive\n";
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#print "unknown nodes: @$tmp_node_unknown\n";
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#get current node status
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my %nodes_status_new1=();
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if ($tmp_node_active) { %nodes_status_new1=pingNodeStatus(@$tmp_node_active);}
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my %nodes_status_new2=();
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if ($tmp_node_inactive) {%nodes_status_new2=pingNodeStatus(@$tmp_node_inactive);}
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my %nodes_status_new3=();
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if ($tmp_node_unknown) { %nodes_status_new3=pingNodeStatus(@$tmp_node_unknown);}
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my $changed1=$nodes_status_new1{$::STATUS_INACTIVE};
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my $changed2=$nodes_status_new2{$::STATUS_ACTIVE};
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my $changed3=$nodes_status_new3{$::STATUS_INACTIVE};
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my $changed4=$nodes_status_new3{$::STATUS_ACTIVE};
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my @changed_active=(@$changed2, @$changed4);
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my @changed_inactive=(@$changed1, @$changed3);
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print " switch to active: @changed_active\n";
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print " switch to inactive: @changed_inactive\n";
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my %node_status=();
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if (@changed_active>0) {
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$node_status{$::STATUS_ACTIVE}=\@changed_active;
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}
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if (@changed_inactive>0) {
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$node_status{$::STATUS_INACTIVE}=\@changed_inactive;
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}
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#only set the node status for the changed ones
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if (keys(%node_status) > 0) {
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xCAT_monitoring::monitorctrl::processNodeStatusChanges(\%node_status);
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}
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($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst)=localtime(time);
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printf "%2d-%02d-%04d %02d:%02d:%02d: xcatnodemon finished.\n\n", $mon+1,$mday,$year+1900,$hour,$min,$sec;
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#--------------------------------------------------------------------------------
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=head3 pingNodeStatus
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This function takes an array of nodes and returns their status using fping.
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Arguments:
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nodes-- an array of nodes.
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Returns:
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a hash that has the node status. The format is:
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{active=>[node1, node3,...], unreachable=>[node4, node2...]}
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=cut
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#--------------------------------------------------------------------------------
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sub pingNodeStatus {
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my @mon_nodes=@_;
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%status=();
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my @active_nodes=();
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my @inactive_nodes=();
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if ((@mon_nodes)&& (@mon_nodes > 0)) {
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#get all the active nodes
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#TODO how to decide the path of fping. how about AIX, does it support fping?
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my $nodes= join(' ', @mon_nodes);
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my $temp=`/usr/sbin/fping -a $nodes 2> /dev/null`;
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chomp($temp);
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@active_nodes=split(/\n/, $temp);
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#get all the inactive nodes by substracting the active nodes from all.
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my %temp2;
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if ((@active_nodes) && ( @active_nodes > 0)) {
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foreach(@active_nodes) { $temp2{$_}=1};
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foreach(@mon_nodes) {
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if (!$temp2{$_}) { push(@inactive_nodes, $_);}
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}
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}
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else {@inactive_nodes=@mon_nodes;}
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}
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$status{$::STATUS_ACTIVE}=\@active_nodes;
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$status{$::STATUS_INACTIVE}=\@inactive_nodes;
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return %status;
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}
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