Add VMware fencing agent to HA samples

Author: Mihaela Blendea

media/features/high-availability/assign-user-to-role-vmware.png

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+# Configure STONITH With fence_vmare Fencing Agent
+
+>[!NOTE]
+>All examples of using fencing agent for vmware in [RHEL documentation](https://access.redhat.com/solutions/306233) are with `-ssl` option ( or `-z`). That “Default” behavior has changed from just checking any certificate to just signed certs that can be validated. Hence in testing use the `–ssl-insecure`. Can use default if you have a valid certificate.
+
+## Manually Test Fencing Device 
+
+The options that are passed in the example below have the following usage: `-a` is IP of Vsphere, `-l` is username, `-p` is password, `-n` is node name you want to fence. Can use `-v` as verbose mode to debug.
+
+```bash
+sudo cd /sbin
+sudo ./fence_vmware_soap -a 172.16.50.50  -l stonithuser -p 'MyStrongPassword1!' --ssl-insecure  --action status -n esxi-rhel7-c
+```
+Output:
+```bash
+/usr/lib/python2.7/site-packages/urllib3/connectionpool.py:769: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.org/en/latest/security.html
+Status: ON
+```
+
+## Create Fencing Agent Resource
+
+To create the resource run the following commands:
+```bash
+sudo pcs stonith create esxi-rhel7-c_fence fence_vmware_soap ipaddr=172.16.50.50 ssl_insecure=1 login=stonithuser passwd='MyStrongPassword1!' pcmk_host_list=esxi-rhel7-c
+```
+
+## Check Status
+
+Run the following commands to check the status of the cluster nodes and reources:
+```bash
+sudo pcs status
+```
+Sample output:
+```bash
+3 nodes and 5 resources configured
+…
+…
+Full list of resources:
+
+Master/Slave Set: ag_cluster-master [ag_cluster]
+     Masters: [ dl380g7-07 ]
+     Slaves: [ dl380g7-08 ]
+     Stopped: [ esxi-rhel7-c ]
+virtualip      (ocf::heartbeat:IPaddr2):       Started dl380g7-07
+esxi-rhel7-c_fence     (stonith:fence_vmware_soap):    Started dl380g7-08
+```
+
+## Testing
+
+```bash
+sudo pcs stonith fence esxi-rhel7-c
+```
+You can see it will turn the VM off and then back on:
+ ![Stonith action](../../../../../../media/features/high-availability/stonith-action.png "Stonith action")
+
+ ## VMware Permissions
+
+On VMware vSphere, in order to use limited set of permissions, create a specific user in ESXI to not use root:
+ ![Create user](../../../../../../media/features/high-availability/create-user-vmware.png "Create user")
+
+Created a Role with only subset of permissions:
+ ![Create role](../../../../../../media/features/high-availability/create-role-vmware.png "Create role")
+
+Tie the 2 together aka assign user to the role:
+ ![Assign user to role](../../../../../../media/features/high-availability/assign-user-to-role-vmware.png "Assign user to role")
+ ![Manage permissions](../../../../../../media/features/high-availability/manage-permissions1-vmware.png "Manage permissions")
+ ![Manage permissions](../../../../../../media/features/high-availability/manage-permissions2-vmware.png "Manage permissions")