Skip to content

Graceful Cluster Startup

Graceful Startup of an Openshift 4 Cluster

This SOP should be followed in the following scenarios:

  • Starting up an Openshift 4 cluster.
Steps

Prequisite steps:

Start the physical nodes :
  • Production uses adhoc-ipmi-poweron.yml playbook to stop/start/restart nodes : 
ansible-playbook playbooks/adhoc-ipmi-poweron.yml -l ocp-ci
  • Staging uses adhoc-seamicro-poweron.yml playbook to start the powered off seamicro compute nodes
ansible-playbook playbooks/adhoc-seamicro-poweron.yml # This will prompt for nodes, just use `ocp-ci` as group
Once the nodes have been started they must be uncordoned if appropriate
oc get nodes
NAME                       STATUS                     ROLES    AGE    VERSION
dumpty-n1.ci.centos.org    Ready,SchedulingDisabled   worker   77d    v1.18.3+6c42de8
dumpty-n2.ci.centos.org    Ready,SchedulingDisabled   worker   77d    v1.18.3+6c42de8
dumpty-n3.ci.centos.org    Ready,SchedulingDisabled   worker   77d    v1.18.3+6c42de8
dumpty-n4.ci.centos.org    Ready,SchedulingDisabled   worker   77d    v1.18.3+6c42de8
dumpty-n5.ci.centos.org    Ready,SchedulingDisabled   worker   77d    v1.18.3+6c42de8
kempty-n10.ci.centos.org   Ready,SchedulingDisabled   worker   106d   v1.18.3+6c42de8
kempty-n11.ci.centos.org   Ready,SchedulingDisabled   worker   106d   v1.18.3+6c42de8
kempty-n12.ci.centos.org   Ready,SchedulingDisabled   worker   106d   v1.18.3+6c42de8
kempty-n6.ci.centos.org    Ready,SchedulingDisabled   master   106d   v1.18.3+6c42de8
kempty-n7.ci.centos.org    Ready,SchedulingDisabled   master   106d   v1.18.3+6c42de8
kempty-n8.ci.centos.org    Ready,SchedulingDisabled   master   106d   v1.18.3+6c42de8
kempty-n9.ci.centos.org    Ready,SchedulingDisabled   worker   106d   v1.18.3+6c42de8

nodes=$(oc get nodes -o name  | sed -E "s/node\///")

for node in ${nodes[@]}; do oc adm uncordon $node; done
node/dumpty-n1.ci.centos.org uncordoned
node/dumpty-n2.ci.centos.org uncordoned
node/dumpty-n3.ci.centos.org uncordoned
node/dumpty-n4.ci.centos.org uncordoned
node/dumpty-n5.ci.centos.org uncordoned
node/kempty-n10.ci.centos.org uncordoned
node/kempty-n11.ci.centos.org uncordoned
node/kempty-n12.ci.centos.org uncordoned
node/kempty-n6.ci.centos.org uncordoned
node/kempty-n7.ci.centos.org uncordoned
node/kempty-n8.ci.centos.org uncordoned
node/kempty-n9.ci.centos.org uncordoned

oc get nodes
NAME                       STATUS   ROLES    AGE    VERSION
dumpty-n1.ci.centos.org    Ready    worker   77d    v1.18.3+6c42de8
dumpty-n2.ci.centos.org    Ready    worker   77d    v1.18.3+6c42de8
dumpty-n3.ci.centos.org    Ready    worker   77d    v1.18.3+6c42de8
dumpty-n4.ci.centos.org    Ready    worker   77d    v1.18.3+6c42de8
dumpty-n5.ci.centos.org    Ready    worker   77d    v1.18.3+6c42de8
kempty-n10.ci.centos.org   Ready    worker   106d   v1.18.3+6c42de8
kempty-n11.ci.centos.org   Ready    worker   106d   v1.18.3+6c42de8
kempty-n12.ci.centos.org   Ready    worker   106d   v1.18.3+6c42de8
kempty-n6.ci.centos.org    Ready    master   106d   v1.18.3+6c42de8
kempty-n7.ci.centos.org    Ready    master   106d   v1.18.3+6c42de8
kempty-n8.ci.centos.org    Ready    master   106d   v1.18.3+6c42de8
kempty-n9.ci.centos.org    Ready    worker   106d   v1.18.3+6c42de8
Resources