[ovirt-users] Correct recovery procedure of the oVirt Hosted Engine 4.0

[aleksey.maksimov at it-kb.ru]

Well.
Then, in the case of conditions:

1) the vm is not available anymore due to storage corruption
2) an empty shared storage is available
3) engine backup exists
4) all VMs still running on the hosts in the cluster


The recovery plan will be like this (as I understand it):


1) On all the hosts (if they are still available):

# service ovirt-ha-broker stop
# service ovirt-ha-agent stop
# chkconfig --del ovirt-ha-broker
# chkconfig --del ovirt-ha-agent


2) On first host (if the original host is not available anymore, provision a new host from scratch and proceed on this new host):

  2.1) # hosted-engine --deploy

 ◾use same fqdn you had previously in the HE VM.
 ◾point to the new shared storage
 ◾provide the same admin password you used in previous setup
 ◾install the OS on the vm
 ◾confirm it has been installed

 on Hosted Engine VM:

  a) Install the ovirt-engine rpms on the vm but don't run engine-setup:
  # yum install http://resources.ovirt.org/pub/yum-repo/ovirt-release40.rpm
  # yum install epel-release
  # yum install ovirt-engine
  b) Restore the backup:
  # engine-backup --mode=restore --file=file_name --log=log_file_name --provision-db --provision-dwh-db --restore-permissions
  c) Run "engine-setup"

   2.2) Open Administration Portal and remove the all old hosts used for Hosted Engine

   2.3) Confirm that the engine has been installed (Return to the host and continue the hosted-engine deployment script by selecting option 1) and then finish the deploy.

   2.4) In Administration Portal activate new host


3) On all additional hosts run "hosted-engine --deploy".


Right?