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MAS - Load Balance Algorithm

By Tinnokesh AP posted Wed November 05, 2025 07:23 PM

  

Key Purpose : Helps to manage and balance incoming traffic/load

Load Balance Algorithms :

  • Before Red Hat OpenShift Container Platform 4.10 : Three load-balancing algorithms are available
    • source
    • roundrobin
    • leastconn (Default)
  • Starting from Red Hat OpenShift Container Platform 4.10 : Four load-balancing algorithms are available
    • source
    • roundrobin
    • random (Default)
    • leastconn
How to customize for a specific route :
  • Use route annotations.
  • Please find the example as below to set the algorithm to leastconn
    Eg: oc annotate --overwrite route/example-route haproxy.router.openshift.io/balance=leastconn
Reference :
  • https://www.ibm.com/docs/en/masv-and-l/cd?topic=suite-configuring-haproxy-router
  • https://ibm-mas.github.io/mas-performance/mas/manage/bestpractice/#load-balancer
  • https://ibm-mas.github.io/mas-performance/mas/ocp/bestpractice/#load-balance-algorithm

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