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Go Back   Linux Archive > Redhat > Cluster Development

 
 
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Old 01-19-2009, 09:41 PM
Matthew Kent
 
Default add Intel Modular Server fencing agent based on ibmblade fence

---
fence/agents/intelmodular/Makefile | 4 +
fence/agents/intelmodular/fence_intelmodular.pl | 273 +++++++++++++++++++++++
2 files changed, 277 insertions(+), 0 deletions(-)
create mode 100644 fence/agents/intelmodular/Makefile
create mode 100644 fence/agents/intelmodular/fence_intelmodular.pl

diff --git a/fence/agents/intelmodular/Makefile b/fence/agents/intelmodular/Makefile
new file mode 100644
index 0000000..ba22926
--- /dev/null
+++ b/fence/agents/intelmodular/Makefile
@@ -0,0 +1,4 @@
+TARGET= fence_intelmodular
+
+include ../../../make/defines.mk
+include $(OBJDIR)/make/fencebuild.mk
diff --git a/fence/agents/intelmodular/fence_intelmodular.pl b/fence/agents/intelmodular/fence_intelmodular.pl
new file mode 100644
index 0000000..8d9546f
--- /dev/null
+++ b/fence/agents/intelmodular/fence_intelmodular.pl
@@ -0,0 +1,273 @@
+#!/usr/bin/perl
+
+# Intel Modular Server fencing based on fence_ibmblade.pl
+#
+# Tested with an Intel MFSYS25 using firmware package 2.6 Should work with an
+# MFSYS35 as well.
+#
+# Requires Net::SNMP
+#
+# Notes:
+#
+# The manual and firmware release notes says SNMP is read only. This is not
+# true, as per the MIBs that ship with the firmware you can write to
+# the bladePowerLed oid to control the servers.
+
+use Getopt::Std;
+use Net::SNMP;
+
+# Get the program name from $0 and strip directory names
+$_=$0;
+s/.*///;
+my $pname = $_;
+
+my $sleep_time = 5;
+my $snmp_timeout = 10;
+$opt_o = "reboot";
+$opt_u = 161;
+
+# from INTELCORPORATION-MULTI-FLEX-SERVER-BLADES-MIB.my that ships with
+# firmware updates
+my $oid_power = ".1.3.6.1.4.1.343.2.19.1.2.10.202.1.1.6"; # bladePowerLed
+
+# WARNING!! Do not add code bewteen "#BEGIN_VERSION_GENERATION" and
+# "#END_VERSION_GENERATION" It is generated by the Makefile
+
+#BEGIN_VERSION_GENERATION
+$RELEASE_VERSION="";
+$REDHAT_COPYRIGHT="";
+$BUILD_DATE="";
+#END_VERSION_GENERATION
+
+sub usage
+{
+ print "Usage:
";
+ print "
";
+ print "$pname [options]
";
+ print "
";
+ print "Options:
";
+ print " -a <ip> IP address or hostname of Intel Modular Server
";
+ print " -h usage
";
+ print " -c <community> SNMP Community
";
+ print " -n <num> Server number to disable
";
+ print " -o <string> Action: Reboot (default), On or Off
";
+ print " -u <udpport> UDP port to use (default: 161)
";
+ print " -q quiet mode
";
+ print " -t test power state
";
+ print " -V version
";
+
+ exit 0;
+}
+
+sub fail_usage
+{
+ ($msg)=@_;
+ print STDERR $msg."
" if $msg;
+ print STDERR "Please use '-h' for usage.
";
+ exit 1;
+}
+
+sub fail
+{
+ ($msg) = @_;
+ print $msg."
" unless defined $opt_q;
+ $t->close if defined $t;
+ exit 1;
+}
+
+sub version
+{
+ print "$pname $RELEASE_VERSION $BUILD_DATE
";
+ print "$REDHAT_COPYRIGHT
" if ( $REDHAT_COPYRIGHT );
+
+ exit 0;
+}
+
+sub get_options_stdin
+{
+ my $opt;
+ my $line = 0;
+ while( defined($in = <>) )
+ {
+ $_ = $in;
+ chomp;
+
+ # strip leading and trailing whitespace
+ s/^s*//;
+ s/s*$//;
+
+ # skip comments
+ next if /^#/;
+
+ $line+=1;
+ $opt=$_;
+ next unless $opt;
+
+ ($name,$val)=split /s*=s*/, $opt;
+
+ if ( $name eq "" )
+ {
+ print STDERR "parse error: illegal name in option $line
";
+ exit 2;
+ }
+
+ # DO NOTHING -- this field is used by fenced
+ elsif ($name eq "agent" ) { }
+
+ elsif ($name eq "ipaddr" )
+ {
+ $opt_a = $val;
+ }
+ elsif ($name eq "community" )
+ {
+ $opt_c = $val;
+ }
+
+ elsif ($name eq "option" )
+ {
+ $opt_o = $val;
+ }
+ elsif ($name eq "port" )
+ {
+ $opt_n = $val;
+ }
+ elsif ($name eq "udpport" )
+ {
+ $opt_u = $val;
+ }
+
+ # FIXME should we do more error checking?
+ # Excess name/vals will be eaten for now
+ else
+ {
+ fail "parse error: unknown option "$opt"";
+ }
+ }
+}
+
+# ---------------------------- MAIN --------------------------------
+
+if (@ARGV > 0) {
+ getopts("a:hc:n:qu:tV") || fail_usage ;
+
+ usage if defined $opt_h;
+ version if defined $opt_V;
+
+ fail_usage "Unknown parameter." if (@ARGV > 0);
+
+ fail_usage "No '-a' flag specified." unless defined $opt_a;
+ fail_usage "No '-n' flag specified." unless defined $opt_n;
+ fail_usage "No '-c' flag specified." unless defined $opt_c;
+ fail_usage "Unrecognised action '$opt_o' for '-o' flag"
+ unless $opt_o =~ /^(reboot|on|off)$/i;
+
+} else {
+ get_options_stdin();
+
+ fail "failed: no IP address" unless defined $opt_a;
+ fail "failed: no server number" unless defined $opt_n;
+ fail "failed: no SNMP community" unless defined $opt_c;
+ fail "failed: unrecognised action: $opt_o"
+ unless $opt_o =~ /^(reboot|on|off)$/i;
+}
+
+my ($snmpsess, $error) = Net::SNMP->session (
+ -hostname => $opt_a,
+ -version => "snmpv1",
+ -port => $opt_u,
+ -community => $opt_c,
+ -timeout => $snmp_timeout);
+
+if (!defined ($snmpsess)) {
+ printf("$RELEASE_VERSION ERROR: %s.
", $error);
+ exit 1;
+};
+
+# first check in what state are we now
+my $oid = $oid_power . "." . $opt_n;
+my $oid_val = "";
+my $result = $snmpsess->get_request (
+ -varbindlist => [$oid]
+);
+if (!defined($result)) {
+ printf("$RELEASE_VERSION ERROR: %s.
", $snmpsess->error);
+ $snmpsess->close;
+ exit 1;
+}
+
+if (defined ($opt_t)) {
+ printf ("$RELEASE_VERSION STATE: Server %d on %s returned %d
", $opt_n, $opt_a, $result->{$oid});
+ exit 1;
+};
+
+if ($opt_o =~ /^(reboot|off)$/i) {
+ if ($result->{$oid} == "0") {
+ printf ("$RELEASE_VERSION WARNING: Server %d on %s already down.
", $opt_n, $opt_a);
+ $snmpsess->close;
+ exit 0;
+ };
+} else {
+ if ($result->{$oid} == "2") {
+ printf ("$RELEASE_VERSION WARNING: Server %d on %s already up.
", $opt_n, $opt_a);
+ $snmpsess->close;
+ exit 0;
+ };
+};
+
+# excellent, now change the state
+if ($opt_o =~ /^reboot$/i) {
+ # reboot
+ $oid_val = "4";
+} elsif ($opt_o =~ /^on$/i) {
+ # power on
+ $oid_val = "2";
+} else {
+ # power down
+ $oid_val = "3";
+};
+
+$result = $snmpsess->set_request (
+ -varbindlist => [$oid, INTEGER, $oid_val]
+);
+
+if (!defined ($result)) {
+ printf("$RELEASE_VERSION ERROR: %s.
", $snmpsess->error);
+ $snmpsess->close;
+ exit 1;
+};
+
+# now, wait a bit and see if we have done it
+sleep($sleep_time);
+
+undef $result;
+$result = $snmpsess->get_request (
+ -varbindlist => [$oid]
+);
+
+if (!defined($result)) {
+ # this is a real error
+ printf("$RELEASE_VERSION ERROR: %s.
", $snmpsess->error);
+ $snmpsess->close;
+ exit 1;
+};
+
+if ($opt_o =~ /^(off)$/i) {
+ if ($result->{$oid} == "2") {
+ printf ("$RELEASE_VERSION ERROR: Server %d on %s still up.
", $opt_n, $opt_a);
+ $snmpsess->close;
+ exit 1;
+ };
+} else {
+ if ($result->{$oid} == "0") {
+ printf ("$RELEASE_VERSION ERROR: Server %d on %s still down.
", $opt_n, $opt_a);
+ $snmpsess->close;
+ exit 1;
+ };
+};
+
+# everything's a ok
+$snmpsess->close;
+
+printf ("$RELEASE_VERSION SUCCESS: Server %d on %s changed state to %s
", $opt_n, $opt_a, $opt_o) unless defined $opt_q;
+exit 0;
+
--
1.5.6.5
 

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