Add to that , you can shutdown , pause , start VMs via snmpset.
Here’s an explanation of how to install / use libvirt-snmp.
I just referred to http://wiki.libvirt.org/page/Libvirt-snmp#libvirt-snmp.
many thanks!
| # uname –ri 2.6.32-279.19.1.el6.x86_64 x86_64 # cat /etc/centos-release CentOS release 6.3 (Final) # /usr/libexec/qemu-kvm --version QEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2), Copyright (c) 2003-2008 Fabrice Bellard # libvirtd --version libvirtd (libvirt) 0.9.10 |
[ installation logs of libvirt-snmp including trial and error ]
download libvirt-snmp via git
| # git clone git://libvirt.org/libvirt-snmp.git |
| # ls libvirt-snmp/ AUTHORS INSTALL.1st NEWS autobuild.sh configure.ac libvirt-snmp.spec.in COPYING Makefile.am README autogen.sh docs src |
install some packages which are required to build libvirt-snmp.
| # yum install net-snmp-perl net-snmp net-snmp-utils net-snmp-devel libvirt-devel rpm-build -y |
build libvirt-snmp
| # cd libvirt-snmp/ |
| # ./autobuild.sh test -n "$1" && RESULTS=$1 || RESULTS=results.log : ${AUTOBUILD_INSTALL_ROOT=$HOME/builder} # Make things clean. test -f Makefile && make -k distclean || : rm -rf build mkdir build cd build MIBDIR=$AUTOBUILD_INSTALL_ROOT/share/snmp/mibs mkdir -p $MIBDIR ../autogen.sh --prefix=$AUTOBUILD_INSTALL_ROOT \ --with-mibdir=$MIBDIR ../autogen.sh: line 22: autoreconf: command not found |
need autoreconf command to build libvirt-snmp. install autoreconf via yum.
| # yum install -y autoconf |
run autobuild.sh again.
nn , error
| # ./autobuild.sh test -n "$1" && RESULTS=$1 || RESULTS=results.log : ${AUTOBUILD_INSTALL_ROOT=$HOME/builder} # Make things clean. test -f Makefile && make -k distclean || : rm -rf build mkdir build cd build MIBDIR=$AUTOBUILD_INSTALL_ROOT/share/snmp/mibs mkdir -p $MIBDIR ../autogen.sh --prefix=$AUTOBUILD_INSTALL_ROOT \ --with-mibdir=$MIBDIR Can't exec "aclocal": No such file or directory at /usr/share/autoconf/Autom4te/FileUtils.pm line 326. autoreconf: failed to run aclocal: No such file or directory |
I googled this error and this might be solved by installing automake.
install automake
| # yum install automake –y |
try again. okay.
| # ./autobuild.sh <snip> Wrote: /root/rpmbuild/RPMS/x86_64/libvirt-snmp-0.0.3-1.el6.root1358398204.x86_64.rpm Executing(%clean): /bin/sh -e /var/tmp/rpm-tmp.Sd7MN0 + umask 022 + cd /root/rpmbuild/BUILD + cd libvirt-snmp-0.0.3 + /bin/rm -rf /root/rpmbuild/BUILDROOT/libvirt-snmp-0.0.3-1.el6.root1358398204.x86_64 + exit 0 Executing(--clean): /bin/sh -e /var/tmp/rpm-tmp.SPQKCv + umask 022 + cd /root/rpmbuild/BUILD + rm -rf libvirt-snmp-0.0.3 + exit 0 # echo $? 0 # |
libvirt-snmp rpm package will be created under ~/rpmbuild/RPMS/<arch>/ directory.
| # ls ~/rpmbuild/RPMS/x86_64/ libvirt-snmp-0.0.3-1.el6.root1358398204.x86_64.rpm |
install libvirt-snmp via yum
| # yum --nogpgcheck localinstall ~/rpmbuild/RPMS/x86_64/libvirt-snmp-0.0.3-1.el6.root1358398204.x86_64.rpm –y <snip> Running Transaction Installing : libvirt-snmp-0.0.3-1.el6.root1358398204.x86_64 1/1 Verifying : libvirt-snmp-0.0.3-1.el6.root1358398204.x86_64 1/1 Installed: libvirt-snmp.x86_64 0:0.0.3-1.el6.root1358398204 Complete! |
check options
| # /usr/bin/libvirtMib_subagent --help /usr/bin/libvirtMib_subagent: invalid option -- '-' unknown option ? usage: libvirtGuestTable [-D<tokens>] [-f] [-L] [-M] [-H] [LISTENING ADDRESSES] -f Do not fork() from the calling shell. -DTOKEN[,TOKEN,...] Turn on debugging output for the given TOKEN(s). Without any tokens specified, it defaults to printing all the tokens (which is equivalent to the keyword 'ALL'). You might want to try ALL for extremely verbose output. Note: You can't put a space between the -D and the TOKENs. -H Display a list of configuration file directives understood by the agent and then exit. -M Run as a normal SNMP Agent instead of an AgentX sub-agent. -x ADDRESS connect to master agent at ADDRESS (default /var/agentx/master). -L Do not open a log file; print all messages to stderr. |
display configuration file directives to stderr.
| # /usr/bin/libvirtMib_subagent -H -L No log handling enabled - turning on stderr logging Warning: no access control information configured. It's unlikely this agent can serve any useful purpose in this state. Run "snmpconf -g basic_setup" to help you configure the libvirtGuestTable.conf file for this agent. Configuration directives understood: In libvirtGuestTable.conf and libvirtGuestTable.local.conf: authtrapenable 1 | 2 (1 = enable, 2 = disable) trapsink host [community] [port] trap2sink host [community] [port] informsink host [community] [port] trapsess [snmpcmdargs] host trapcommunity community-string v1trapaddress string agentuser userid <snip> |
a MIB file for libvirt-snmp
| # head -5 /usr/share/snmp/mibs/LIBVIRT-MIB.txt LIBVIRT-MIB DEFINITIONS ::= BEGIN -- -- libvirt.org MIB definition -- |
[ SNMP configuration ]
- snmp get and set configuration
| # cd /etc/snmp/ # cp snmpd.conf snmpd.conf.orig |
edit snmpd.conf like this:
| # egrep -v ^# /etc/snmp/snmpd.conf | grep -v ^$ com2sec notConfigUser default public group notConfigGroup v1 notConfigUser group notConfigGroup v2c notConfigUser view systemview included .1 access notConfigGroup "" any noauth exact systemview systemview none access MyRWGroup "" any noauth 0 all all all syslocation Unknown (edit /etc/snmp/snmpd.conf) syscontact Root <root@localhost> (configure /etc/snmp/snmp.local.conf) dontLogTCPWrappersConnects yes master agentx agentX Socket /var/agentx/master trap2sink localhost public |
start snmpd
| # /etc/init.d/snmpd restart |
run libvirtMib_subagent
| # LIBVIRT_DEFAULT_URI="qemu:///system" libvirtMib_subagent -f -L NET-SNMP version 5.5 AgentX subagent connected |
try snmpbuldwalk to confirm you can get info about libvrit.
| # snmpbulkwalk -v 2c -c public localhost -OX libvirtMIB -m all LIBVIRT-MIB::libvirtGuestName[STRING: bc90f9d2-7366-2c60-891b-23224db5538] = STRING: "centos6-64-1" LIBVIRT-MIB::libvirtGuestState[STRING: bc90f9d2-7366-2c60-891b-23224db5538] = INTEGER: running(1) LIBVIRT-MIB::libvirtGuestCpuCount[STRING: bc90f9d2-7366-2c60-891b-23224db5538] = Gauge32: 1 LIBVIRT-MIB::libvirtGuestMemoryCurrent[STRING: bc90f9d2-7366-2c60-891b-23224db5538] = Gauge32: 1024 LIBVIRT-MIB::libvirtGuestMemoryLimit[STRING: bc90f9d2-7366-2c60-891b-23224db5538] = Gauge32: 1024 LIBVIRT-MIB::libvirtGuestCpuTime[STRING: bc90f9d2-7366-2c60-891b-23224db5538] = Counter64: 119410000000 LIBVIRT-MIB::libvirtGuestRowStatus[STRING: bc90f9d2-7366-2c60-891b-23224db5538] = INTEGER: active(1) |
display snmp table
| # snmptable -m ALL -v 2c -c public -Cb localhost libvirtGuestTable SNMP table: LIBVIRT-MIB::libvirtGuestTable Name State CpuCount MemoryCurrent MemoryLimit CpuTime RowStatus "centos6-64-1" running 1 1024 1024 120270000000 active |
pause the VM “centos6-64-1” via snmpset.
before sending snmpset
| # virsh list --all Id Name State ---------------------------------------------------- 1 centos6-64-1 running |
pause the VM via snmp
| # snmpset -m ALL -v 2c -c public localhost libvirtGuestState.\'bc90f9d2-7366-2c60-891b-23224db5538\' = paused LIBVIRT-MIB::libvirtGuestState.'....sf,`...2$.U8' = INTEGER: paused(3) |
| # virsh list --all Id Name State ---------------------------------------------------- 1 centos6-64-1 paused |
run
| # snmpset -m ALL -v 2c -c public localhost libvirtGuestState.\'bc90f9d2-7366-2c60-891b-23224db5538\' = running LIBVIRT-MIB::libvirtGuestState.'....sf,`...2$.U8' = INTEGER: running(1) # virsh list --all Id Name State ---------------------------------------------------- 1 centos6-64-1 running |
shutdown
| # snmpset -m ALL -v 2c -c public localhost libvirtGuestState.\'bc90f9d2-7366-2c60-891b-23224db5538\' = shutdown |
| # virsh list --all Id Name State ---------------------------------------------------- - centos6-64-1 shut off |
start the VM via snmp
at first check UUID
| # snmpbulkwalk -v 2c -c public localhost -OX libvirtMIB -m all LIBVIRT-MIB::libvirtGuestName[STRING: bc90f9d2-7366-2c60-891b-23224db5538] = STRING: "centos6-64-1" |
start the VM
| # virsh list –all Id Name State ---------------------------------------------------- - centos6-64-1 shut off # snmpset -m ALL -v 2c -c public localhost libvirtGuestRowStat us.\'bc90f9d2-7366-2c60-891b-23224db5538\' = createAndGo LIBVIRT-MIB::libvirtGuestRowStatus.'....sf,`...2$.U8' = INTEGER: createAndGo(4) # virsh list --all Id Name State ---------------------------------------------------- 2 centos6-64-1 running |
- snmp trap configuration
| # cat /etc/snmp/snmptrapd.conf # Example configuration file for snmptrapd # # No traps are handled by default, you must edit this file! # # authCommunity log,execute,net public # traphandle SNMPv2-MIB::coldStart /usr/bin/bin/my_great_script cold authCommunity log test |
run snmptrapd with foreground
| # snmptrapd -f -Lo -c /etc/snmp/snmptrapd.conf --disableAuthorization=yes -m ALL NET-SNMP version 5.5 AgentX subagent connected NET-SNMP version 5.5 |
pause the VM
| # snmpset -m ALL -v 2c -c public localhost libvirtGuestState.\'bc90f9d2-7366-2c60-891b-23224db5538\' = paused LIBVIRT-MIB::libvirtGuestState.'....sf,`...2$.U8' = INTEGER: paused(3) |
| # snmptrapd -f -Lo -c /etc/snmp/snmptrapd.conf --disableAuthorization=yes -m ALL NET-SNMP version 5.5 AgentX subagent connected NET-SNMP version 5.5 2013-01-17 21::01:12 localhost.localdomain [UDP: [127.0.0.1]:43882->[127.0.0.1]]: DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (98514) 0:16:25.14 SNMPv2-MIB::snmpTrapOID.0 = OID: LIBVIRT-MIB::libvirtGuestNotif LIBVIRT-MIB::libvirtGuestName.0 = STRING: "centos6-64-1" LIBVIRT-MIB::libvirtGuestUUID.1 = STRING: bc90f9d2-7366-2c60-891b-23224db5538 LIBVIRT-MIB::libvirtGuestState.2 = INTEGER: paused(3) LIBVIRT-MIB::libvirtGuestRowStatus.3 = INTEGER: active(1) |
shutdown the VM
| # snmpset -m ALL -v 2c -c public localhost libvirtGuestState.\'bc90f9d2-7366-2c60-891b-23224db5538\' = shutdown LIBVIRT-MIB::libvirtGuestState.'....sf,`...2$.U8' = INTEGER: shutdown(4) |
trap message
| 2013-01-17 21::02:41 localhost.localdomain [UDP: [127.0.0.1]:43882->[127.0.0.1]]: DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (107358) 0:17:53.58 SNMPv2-MIB::snmpTrapOID.0 = OID: LIBVIRT-MIB::libvirtGuestNotif LIBVIRT-MIB::libvirtGuestName.0 = STRING: "centos6-64-1" LIBVIRT-MIB::libvirtGuestUUID.1 = STRING: bc90f9d2-7366-2c60-891b-23224db5538 LIBVIRT-MIB::libvirtGuestState.2 = INTEGER: shutdown(4) LIBVIRT-MIB::libvirtGuestRowStatus.3 = INTEGER: notInService(2) 2013-01-17 21::02:41 localhost.localdomain [UDP: [127.0.0.1]:43882->[127.0.0.1]]: DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (107414) 0:17:54.14 SNMPv2-MIB::snmpTrapOID.0 = OID: LIBVIRT-MIB::libvirtGuestNotif LIBVIRT-MIB::libvirtGuestName.0 = STRING: "centos6-64-1" LIBVIRT-MIB::libvirtGuestUUID.1 = STRING: bc90f9d2-7366-2c60-891b-23224db5538 LIBVIRT-MIB::libvirtGuestState.2 = INTEGER: shutoff(5) LIBVIRT-MIB::libvirtGuestRowStatus.3 = INTEGER: notInService(2) |
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