Forum Discussion

Zahid_Haseeb's avatar
Zahid_Haseeb
Moderator
3 years ago

Failover Service Group(Parent) on Top of Parallel Service Group(Child)

ENVIRONMENT

Cluster Nodes = Two

Cluster Nodes OS = RHEL 7.8

Cluster Version = 7.4.2

One parallel service group (redis app is running on both nodes)

One failover service group (vip is running on one node)

DETAIL

We have two applications (Redis). Each running on both HA nodes and the service group is configured as parallel group. However we have also configured another service group resource of virtual ip as failover service group.on same HA nodes

QUERY.

We want to make parallel service group as child and failover service group as parent so in this case the vip will be assigned on any one HA node. in case from child service group (which is parallel) if the application fails, the VIP should trigger failover to another HA node.(We want to do this because we want to save failover time of redis application)

  • frankgfan's avatar
    frankgfan
    3 years ago

    My apology for overlooking the scenario. 

    You can set the service group dependency as "online local firm".

    With service group dependency "online local firm" , when the child service group (parallel) faults, "parent is taken offline. parent fails over to other system and depends on child instance there."

    Is this what you want?

3 Replies

Sort By
  • frankgfan's avatar
    frankgfan
    Moderator
    3 years ago

    One way to achieve your goal is to set the service group dependency as "online global soft" so that "Parent remains online if child faults on any system. If child cannot fail over to another system, parent remains online."

     

     

    • Zahid_Haseeb's avatar
      Zahid_Haseeb
      Moderator
      3 years ago

      No No bro. Child is Parallel(REDIS APP) and Parent is Failover(VIP) and VIP is assigned on one node. So in case Parallel resource faults on a node where the Failover(VIP) resource is online. The Failover(VIP) resource should trigger failover to the other Parallel resource node where the Parallel(REDIS APP) is online 

      • frankgfan's avatar
        frankgfan
        Moderator
        3 years ago

        My apology for overlooking the scenario. 

        You can set the service group dependency as "online local firm".

        With service group dependency "online local firm" , when the child service group (parallel) faults, "parent is taken offline. parent fails over to other system and depends on child instance there."

        Is this what you want?