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diff --git a/doc/stonith/README.bladehpi b/doc/stonith/README.bladehpi new file mode 100644 index 0000000..3119ef7 --- /dev/null +++ b/doc/stonith/README.bladehpi @@ -0,0 +1,101 @@ + +STONITH module for IBM BladeCenter via OpenHPI +---------------------------------------------- + +Requirements: + Linux-HA bladehpi STONITH plugin requires OpenHPI 2.6+ + OpenHPI requires Net-SNMP 5.0+ + OpenHPI requires BladeCenter Management Module 1.08+ + +This STONITH module talks to IBM BladeCenters via SNMP through use of +the OpenHPI BladeCenter plugin (snmp_bc). For more information about +installing OpenHPI, setting up the BladeCenter SNMP agent, etc. please +visit http://www.openhpi.org/. Once OpenHPI is installed properly, +the STONITH plugin will automatically be built the next time Linux-HA +is built. + +Use the OpenHPI configuration file (i.e. /etc/openhpi/openhpi.conf) +to configure the BladeCenters of interest to STONITH. For example, +the following excerpt: + + plugin libsnmp_bc + + handler libsnmp_bc { + entity_root = "{SYSTEM_CHASSIS,1}" # Required + host = "9.254.253.252" # Required + community = "community" # Version 1 Required. + version = "3" # Required. SNMP protocol version (1|3) + security_name = "userid" # Version 3 Required. + passphrase = "userpass" # Version 3. Required if security_level is authNoPriv or authPriv. + auth_type = "MD5" # Version 3. Passphrase encoding (MD5|SHA) + security_level = "authNoPriv" # Version 3. (noAuthNoPriv|authNoPriv|authPriv) + } + +defines how to access the BladeCenter at 9.254.253.252 using SNMPV3 +with an ID/password of userid/userpass. The entity_root must be +passed to the STONITH bladehpi plugin as its single required parameter. +For example, to query the list of blades present in the BladeCenter +configured above, run: + + stonith -t bladehpi -p "{SYSTEM_CHASSIS,1}" -l + +which is the same as: + + stonith -t bladehpi "entity_root={SYSTEM_CHASSIS,1}" -l + +Use the BladeCenter Management Module web interface to set the Blade +Information to match "uname -n" for each blade in the cluster. For +example, with the BladeCeter configured above use a brower to access +http://9.254.253.252, login with userid/userpass, and then go to +Blade Tasks -> Configuration -> Blade Information, enter the proper +names, and select Save. Be aware that heartbeat must be restarted +before these changes take effect or, if using the OpenHPI daemon, +the daemon must be restarted. + +More than one BladeCenter can be placed in the OpenHPI configuration +file by using different numbers with the entity_root. For example, + + plugin libsnmp_bc + + handler libsnmp_bc { + entity_root = "{SYSTEM_CHASSIS,1}" # Required + host = "9.254.253.252" # Required + : + } + handler libsnmp_bc { + entity_root = "{SYSTEM_CHASSIS,2}" # Required + host = "9.254.253.251" # Required + : + } + +There is an optional parameter, soft_reset, that is true|1 if bladehpi +should use soft reset (power cycle) to reset nodes or false|0 if it +should use hard reset (power off, wait, power on); the default is +false. As an example, to override the default value the above stonith +command would become: + + stonith -t bladehpi -p "{SYSTEM_CHASSIS,1} true" -l + +which is the same as: + + stonith -t bladehpi "entity_root={SYSTEM_CHASSIS,1} soft_reset=true" -l + +The difference between the two is that a soft reset is much quicker +but may return before the node has been reset because bladehpi relies +on BladeCenter firmware to cycle the node's power, while a hard reset +is slower but guaranteed not to return until the node is dead because +bladehpi powers off the node, waits until it is off, then powers it +on again. + +NOTE: Set the OPENHPI_CONF environment variable to contain the +fully-qualified path of the OpenHPI configuration file, for example: + + export OPENHPI_CONF=/etc/openhpi/openhpi.conf + +NOTE: If OpenHPI is not configured with --disable-daemon before being +built and installed, make sure that the OpenHPI daemon is running +before using the bladehpi plugin. + +NOTE: If debugging of the environment is needed, configure OpenHPI +with --enable-debuggable and rebuild/reinstall, export +OPENHPI_DEBUG=YES, and run stonith commands with the -d option. |