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Recovering the cluster from a failed controller node

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vedujoshi edited this page Apr 26, 2016 · 1 revision

In a 2n+1 Contrail controller HA setup, a single node failure can be accomodated.

For instance, a disk on one of the nodes may be bad. In such scenarios, you could re-install and bringup the same node( with a new disk, ofcourse) with the below steps The controller here does role of config, database, analytics/collector, webui, control-node

  • Install contrail-install-packages package and run /opt/contrail/contrail_packages/setup.sh
  • fab upgrade_kernel_node:"host_string" , and reboot the node
  • fab setup_interface_node:"host_string"
  • fab install_database_node:False,"host_string"
  • fab install_cfgm_node:"host_string"
  • fab install_collector_node:host_string
  • fab install_control_node:host_string
  • fab install_webui_node:host_string
  • fab setup_common_node:host_string
  • fab setup_contrail_keepalived
  • fab setup_rabbitmq_cluster
  • fab increase_limits_node:"host_string"
  • fab setup_database_node:"host_string"
  • fab setup_cfgm_node:"host_string"
  • fab setup_control_node:"host_string"
  • fab setup_collector_node:"host_string"
  • fab setup_webui_node:"host_string"

host_string above is of the form 'root@x.y.z.a'

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