Symantec Access Management

Expand all | Collapse all

Hi, if HCO configuration value has 3 polcyservers with Disabled Failover and Cluster failover Threshold Percent 70%.  Clusters contains 3 policyservers and Failover Threshold has 3. How this setup will work. Can load will be distributed eqally?

Ramakris

RamakrisJun 12, 2017 02:12 PM

  • 1.  Hi, if HCO configuration value has 3 polcyservers with Disabled Failover and Cluster failover Threshold Percent 70%.  Clusters contains 3 policyservers and Failover Threshold has 3. How this setup will work. Can load will be distributed eqally?

    Posted Jun 12, 2017 02:12 PM

    s



  • 2.  Re: Hi, if HCO configuration value has 3 polcyservers with Disabled Failover and Cluster failover Threshold Percent 70%.  Clusters contains 3 policyservers and Failover Threshold has 3. How this setup will work. Can load will be distributed eqally?
    Best Answer

    Posted Jun 12, 2017 04:57 PM

    This should answer your query:


    https://communities.ca.com/docs/DOC-231163972


    When clusters are configured

     

    The policy servers can be configured to work in groups or clusters. In this case, one can have groupings of policy servers which essentially means that suppose there are four policy servers (PS1,PS2,PS3,PS4) then one can have Cluster 1(PS1,PS2) and Cluster 2(PS3,PS4).

    The geographical conditions or some other factors can decide which policy server is to be grouped with which other server.

    Like if PS1 and PS2 lie in same geographic area then we can have cluster grouping both these PS.

     

    Now, when clusters are configured failover and load balancing mechanism will work in the following manner:

     

    The failover mechanism will happen between different clusters and load balancing mechanism will occur between policy servers inside a particular cluster.

    The failover between clusters will occur depending on the value of failover threshold. A cluster can fail-over to another cluster if the number of available policy servers in the cluster falls below a configurable threshold.

     

    Now, when the request comes, it would be served by Cluster 1(going by failover mechanism). Now, which PS in Cluster 1 will serve the request is determined dynamically by best server algorithm based on the performance capabilities of each policy server. As discussed above, load is dynamically distributed between policy servers in a cluster based on server response time.

     

    Now, agent will failover to Cluster 2, if number of active policy servers in Cluster 1 falls below the configured threshold value. The default failover threshold is zero, which means that all policy servers in Cluster 1 must fail before failover occurs to Cluster 2. Once failover occurs to Cluster 2, then the subsequent requests will be served by policy servers in Cluster 2.



  • 3.  Re: Hi, if HCO configuration value has 3 polcyservers with Disabled Failover and Cluster failover Threshold Percent 70%.  Clusters contains 3 policyservers and Failover Threshold has 3. How this setup will work. Can load will be distributed eqally?

    Posted Jun 15, 2017 07:38 AM

    Thank you so much. It's very helpful.