RHEL 7 PaceMaker Fence Agent Options

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Operating Systems Linux Red Hat RHEL 7 PaceMaker Fence Agent Options
# 1  
RHEL 7 PaceMaker Fence Agent Options

my options are getting very limited very fast on what agent to use with my 2 Node RHEL 7 VM Cluster.

fence_vmware_soap "plug id"?

I have a ESX resource cluster of 7 blades being managed by a Vsphere 6.0 server. I found the blade that the Cluster VM(s) is housed on. WTF is the plug id (sorry for the frustration) being asked for on the command line for the fence_vmware_soap agent.

I have tried to use a iscsi target being presented by a external host, but as I have tried to use iscsiadm to discover the tartget, I get connection refused.

Cant use fence_scsi because the fence_scsi on VMware shared virtual disk does not support scsi-3.
# 2  
I don't see a plug id option? What fence-agent version are you using? This is the output from 4.0.11-27 of fence-agents-vmware-soap.x86_64.

# pcs stonith describe fence_vmware_soap
fence_vmware_soap - Fence agent for VMWare over SOAP API

fence_vmware_soap is an I/O Fencing agent which can be used with the virtual machines managed by VMWare products that have SOAP API v4.1+. 
Name of virtual machine (-n / port) has to be used in inventory path format (e.g. /datacenter/vm/Discovered virtual machine/myMachine). In the cases when name of yours VM is unique you can use it instead. Alternatively you can always use UUID to access virtual machine.

Stonith options:
  ipport: TCP/UDP port to use for connection with device
  notls: Disable TLS negotiation, force SSL 3.0
  ssl_secure: SSL connection with verifying fence device's certificate
  port (required): Physical plug number, name of virtual machine or UUID
  inet6_only: Forces agent to use IPv6 addresses only
  ipaddr (required): IP Address or Hostname
  inet4_only: Forces agent to use IPv4 addresses only
  passwd_script: Script to retrieve password
  passwd: Login password or passphrase
  ssl: SSL connection
  ssl_insecure: SSL connection without verifying fence device's certificate
  action (required): Fencing Action
  login (required): Login Name
  verbose: Verbose mode
  debug: Write debug information to given file
  version: Display version information and exit
  help: Display help and exit
  separator: Separator for CSV created by operation list
  power_wait: Wait X seconds after issuing ON/OFF
  login_timeout: Wait X seconds for cmd prompt after login
  power_timeout: Test X seconds for status change after ON/OFF
  delay: Wait X seconds before fencing is started
  shell_timeout: Wait X seconds for cmd prompt after issuing command
  retry_on: Count of attempts to retry power on
  priority: The priority of the stonith resource. Devices are tried in order of highest priority to lowest.
  pcmk_host_map: A mapping of host names to ports numbers for devices that do not support host names.
  pcmk_host_list: A list of machines controlled by this device (Optional unless pcmk_host_check=static-list).
  pcmk_host_check: How to determine which machines are controlled by the device.
  pcmk_delay_max: Enable random delay for stonith actions and specify the maximum of random delay

# 3  
Well, that's whats frustrating about Linux so far. The agent doesn't require it, but, the PaceMaker framework does. Finally had to submit a Support ticket to RHEL, and the Plug id is whats returned when you query the VM server, basically, the UUID of the VM residing on ESX server.
# 4  
Pacemaker is new in RHEL7 and is not well documented by Red Hat and the community site uses different commands/syntax so not much carries over cleanly. Pacemaker can be a pain to configure but it works very well once going and does the job it is designed to do very well. That being said, I haven't found a use case where I would use it on VM's.

Stonith/fencing is a vital part of pacemaker, but if you are just testing you can disable it and the resources will start without it.

pcs property set stonith-enabled=false

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