How do I update the maximum number of connections to MariaDB database?

Solution Unverified - Updated -

Issue

  • OpenStack APIs behind HAProxy respond very slowly or fail and the max_connections value should be updated. How can I increase maximum connections on the MariaDB/Galera database server?

Environment

  • Red Hat Enterprise Linux Openstack Platform 5.
  • Red Hat Enterprise Linux Openstack Platform 6.
  • Red Hat Enterprise Linux Openstack Platform 7.
  • Red Hat Enterprise Linux Openstack Platform 8.
  • Red Hat Enterprise Linux Openstack Platform 9.

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