diff options
Diffstat (limited to '')
| -rw-r--r-- | doc/stonith/README.dracmc | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/doc/stonith/README.dracmc b/doc/stonith/README.dracmc new file mode 100644 index 0000000..761f5ad --- /dev/null +++ b/doc/stonith/README.dracmc @@ -0,0 +1,87 @@ +dracmc-telnet - External stonith plugin for HAv2 (http://linux-ha.org/wiki) + Connects to Dell Drac/MC Blade Enclosure via a Cyclades + terminal server with telnet and switches power of named + blade servers appropriatelly. + +Description: + Dell offers the Drac/MC in their blade enclosures. The +Drac/MC can be accessed in different ways. One way to interface to it +is to connect the blade enclosure's Drac/MC serial port to a Cyclades +terminal server. You can then access the Drac/MC via telnet via the +Cyclades. Once logged in, you can use 'help' to show all available +commands. With the 'serveraction' command, you can control both +hard and soft resets as well as power to a particular blade. The +blades are named 'Server-X', where 'X' is a number which corresponds +to the blade number in the enclosure. This plugin allows using the +Drac/MC with stonith. It uses python's standards 'telnetlib' library +to log in and issue commands. The code is very similar to the original +ibmrsa-telnet plugin released by Andreas and was quite easy to +modify for this application. + One complication is that the Cyclades only allows one active +connection. If someone or something has a connection active, the +terminal server closes the new attempted connection. Since this +situation can be common, for example if trying to stonith two blades +or when the plugin is started by multiple cluster nodes, there is a +built in retry mechanism for login. On 10 retries, the code gives up +and throws. + When running this resource, it is best to not run it as a clone, +rather as a normal, single-instance resource. Make sure to create a +location constraint that excludes the node that is to be fenced. + +Required parameters: + nodename: The name of the server you want to touch on your network + cyclades_ip: The IP address of the cyclades terminal server + cyclades_port: The port for telnet to access on the cyclades (i.e. 7032) + servername: The DRAC/MC server name of the blade (i.e. Server-7) + username: The login user name for the DRAC/MC + password: The login password for the DRAC/MC + +Example configuration + +These are examples: you should adjust parameters, scores and +timeout values to fit your environment. + +crm shell: + + primitive fence_node1 stonith:external/dracmc-telnet \ + nodename=node1 cyclades_ip=10.0.0.1 cyclades_port=7001 \ + servername=Server-1 username=USERID password=PASSWORD \ + op monitor interval="200m" timeout="60s" + location loc-fence_node1 fence_node1 -inf: node1 + +XML: + +<?xml version="1.0" ?> +<cib> + <configuration> + <resources> + <primitive id="r_stonith-node01" class="stonith" type="external/dracmc-telnet" provider="heartbeat" resource_stickiness="0"> + <operations> + <op name="monitor" interval="200m" timeout="60s" prereq="nothing" id="r_stonith-node01-mon"/> + <op name="start" timeout="180" id="r_stonith-node01-start"/> + <op name="stop" timeout="180" id="r_stonith-node01-stop"/> + </operations> + <instance_attributes id="r_stonith-node01"> + <attributes> + <nvpair id="r_stonith-node01-nodename" name="nodename" value="node01"/> + <nvpair id="r_stonith-node01-cyclades_ip" name="cyclades_ip" value="192.168.0.1"/> + <nvpair id="r_stonith-node01-cyclades_port" name="cyclades_port" value="7032"/> + <nvpair id="r_stonith-node01-servername" name="servername" value="Server-7"/> + <nvpair id="r_stonith-node01-username" name="username" value="USERID"/> + <nvpair id="r_stonith-node01-password" name="password" value="PASSWORD"/> + <nvpair id="r_stonith-node01-type" name="type" value="dellblade"/> + </attributes> + </instance_attributes> + </primitive> + </resources> + <constraints> + <rsc_location id="r_stonith-node01_prefer_node02" rsc="r_stonith-node01"> + <rule id="r_stonith-node01_prefer_node02_rule" score="50"> + <expression attribute="#uname" id="r_stonith-node01_prefer_node02_expr" operation="eq" value="node02"/> + </rule> + </rsc_location> + </constraints> + + </configuration> +</cib> + |