Verified on aws, clusterversion 4.11.0-0.nightly-2022-06-20-220209 Create pdb, scale machineset to 10, then delete machines, in 4.10 new machines can't be created and waiting for the other nodes to drain $ oc delete machine rugong-0621-nvx7c-worker-us-east-2cc-444q9 rugong-0621-nvx7c-worker-us-east-2cc-6mxp4 rugong-0621-nvx7c-worker-us-east-2cc-bt9s9 rugong-0621-nvx7c-worker-us-east-2cc-hb68b rugong-0621-nvx7c-worker-us-east-2cc-j85hs rugong-0621-nvx7c-worker-us-east-2cc-lrq8z rugong-0621-nvx7c-worker-us-east-2cc-md29j rugong-0621-nvx7c-worker-us-east-2cc-ndgr4 rugong-0621-nvx7c-worker-us-east-2cc-wkfhw machine.machine.openshift.io "rugong-0621-nvx7c-worker-us-east-2cc-444q9" deleted machine.machine.openshift.io "rugong-0621-nvx7c-worker-us-east-2cc-6mxp4" deleted machine.machine.openshift.io "rugong-0621-nvx7c-worker-us-east-2cc-bt9s9" deleted machine.machine.openshift.io "rugong-0621-nvx7c-worker-us-east-2cc-hb68b" deleted machine.machine.openshift.io "rugong-0621-nvx7c-worker-us-east-2cc-j85hs" deleted machine.machine.openshift.io "rugong-0621-nvx7c-worker-us-east-2cc-lrq8z" deleted machine.machine.openshift.io "rugong-0621-nvx7c-worker-us-east-2cc-md29j" deleted machine.machine.openshift.io "rugong-0621-nvx7c-worker-us-east-2cc-ndgr4" deleted machine.machine.openshift.io "rugong-0621-nvx7c-worker-us-east-2cc-wkfhw" deleted $ oc get machine [16:14:57] NAME PHASE TYPE REGION ZONE AGE rugong-0621-nvx7c-master-0 Running m6i.xlarge us-east-2 us-east-2a 7h45m rugong-0621-nvx7c-master-1 Running m6i.xlarge us-east-2 us-east-2b 7h45m rugong-0621-nvx7c-master-2 Running m6i.xlarge us-east-2 us-east-2c 7h45m rugong-0621-nvx7c-worker-us-east-2a-c5mzh Running m6i.large us-east-2 us-east-2a 7h41m rugong-0621-nvx7c-worker-us-east-2b-fdplx Running m6i.large us-east-2 us-east-2b 7h41m rugong-0621-nvx7c-worker-us-east-2c-qgnmj Running m6i.large us-east-2 us-east-2c 7h41m rugong-0621-nvx7c-worker-us-east-2cc-2phqt 52s rugong-0621-nvx7c-worker-us-east-2cc-444q9 Deleting m6i.large us-east-2 us-east-2c 7m56s rugong-0621-nvx7c-worker-us-east-2cc-4st7f Running m6i.large us-east-2 us-east-2c 15m rugong-0621-nvx7c-worker-us-east-2cc-5b4zp 53s rugong-0621-nvx7c-worker-us-east-2cc-6mxp4 Deleting m6i.large us-east-2 us-east-2c 7m56s rugong-0621-nvx7c-worker-us-east-2cc-b2lfg 51s rugong-0621-nvx7c-worker-us-east-2cc-bt9s9 Deleting m6i.large us-east-2 us-east-2c 7m56s rugong-0621-nvx7c-worker-us-east-2cc-dxh9l 54s rugong-0621-nvx7c-worker-us-east-2cc-f87h7 52s rugong-0621-nvx7c-worker-us-east-2cc-hb68b Running m6i.large us-east-2 us-east-2c 7m56s rugong-0621-nvx7c-worker-us-east-2cc-j85hs Running m6i.large us-east-2 us-east-2c 7m56s rugong-0621-nvx7c-worker-us-east-2cc-jh4w5 52s rugong-0621-nvx7c-worker-us-east-2cc-lrq8z Running m6i.large us-east-2 us-east-2c 7m56s rugong-0621-nvx7c-worker-us-east-2cc-m22w4 52s rugong-0621-nvx7c-worker-us-east-2cc-md29j Running m6i.large us-east-2 us-east-2c 7m56s rugong-0621-nvx7c-worker-us-east-2cc-n7l8s 53s rugong-0621-nvx7c-worker-us-east-2cc-ndgr4 Running m6i.large us-east-2 us-east-2c 7m56s rugong-0621-nvx7c-worker-us-east-2cc-wkfhw Running m6i.large us-east-2 us-east-2c 7m56s rugong-0621-nvx7c-worker-us-east-2cc-z29xb Deleting m6i.large us-east-2 us-east-2c 31m rugong-0621-nvx7c-worker-us-east-2cc-zxl6k 53s In 4.11.0-0.nightly-2022-06-20-220209 after this fix, machines can quickly be created without waiting for the other Nodes to drain $ oc delete machine zhsunaws-n52dn-worker-us-east-2c-2hxdj zhsunaws-n52dn-worker-us-east-2c-9slz7 zhsunaws-n52dn-worker-us-east-2c-cfxp4 zhsunaws-n52dn-worker-us-east-2c-kmmvc zhsunaws-n52dn-worker-us-east-2c-l4gjt zhsunaws-n52dn-worker-us-east-2c-qfg6h zhsunaws-n52dn-worker-us-east-2c-qmpg6 zhsunaws-n52dn-worker-us-east-2c-tq8br zhsunaws-n52dn-worker-us-east-2c-xjjs7 machine.machine.openshift.io "zhsunaws-n52dn-worker-us-east-2c-2hxdj" deleted machine.machine.openshift.io "zhsunaws-n52dn-worker-us-east-2c-9slz7" deleted machine.machine.openshift.io "zhsunaws-n52dn-worker-us-east-2c-cfxp4" deleted machine.machine.openshift.io "zhsunaws-n52dn-worker-us-east-2c-kmmvc" deleted machine.machine.openshift.io "zhsunaws-n52dn-worker-us-east-2c-l4gjt" deleted machine.machine.openshift.io "zhsunaws-n52dn-worker-us-east-2c-qfg6h" deleted machine.machine.openshift.io "zhsunaws-n52dn-worker-us-east-2c-qmpg6" deleted machine.machine.openshift.io "zhsunaws-n52dn-worker-us-east-2c-tq8br" deleted machine.machine.openshift.io "zhsunaws-n52dn-worker-us-east-2c-xjjs7" deleted $ oc get machine [16:14:18] NAME PHASE TYPE REGION ZONE AGE zhsunaws-n52dn-master-0 Running m6i.xlarge us-east-2 us-east-2a 7h9m zhsunaws-n52dn-master-1 Running m6i.xlarge us-east-2 us-east-2b 7h9m zhsunaws-n52dn-master-2 Running m6i.xlarge us-east-2 us-east-2c 7h9m zhsunaws-n52dn-worker-us-east-2a-hnd9s Running m6i.xlarge us-east-2 us-east-2a 7h7m zhsunaws-n52dn-worker-us-east-2b-7wn4t Running m6i.xlarge us-east-2 us-east-2b 7h7m zhsunaws-n52dn-worker-us-east-2c-29tdf Provisioning m6i.xlarge us-east-2 us-east-2c 20s zhsunaws-n52dn-worker-us-east-2c-2hxdj Deleting m6i.xlarge us-east-2 us-east-2c 7m50s zhsunaws-n52dn-worker-us-east-2c-46vqz Provisioning m6i.xlarge us-east-2 us-east-2c 20s zhsunaws-n52dn-worker-us-east-2c-8j5x5 Provisioned m6i.xlarge us-east-2 us-east-2c 21s zhsunaws-n52dn-worker-us-east-2c-94tb9 Provisioning m6i.xlarge us-east-2 us-east-2c 21s zhsunaws-n52dn-worker-us-east-2c-9slz7 Deleting m6i.xlarge us-east-2 us-east-2c 7m50s zhsunaws-n52dn-worker-us-east-2c-cfxp4 Deleting m6i.xlarge us-east-2 us-east-2c 7m50s zhsunaws-n52dn-worker-us-east-2c-cxtkq Provisioning m6i.xlarge us-east-2 us-east-2c 20s zhsunaws-n52dn-worker-us-east-2c-jwczk Deleting m6i.xlarge us-east-2 us-east-2c 31m zhsunaws-n52dn-worker-us-east-2c-kmmvc Deleting m6i.xlarge us-east-2 us-east-2c 7m50s zhsunaws-n52dn-worker-us-east-2c-l4gjt Deleting m6i.xlarge us-east-2 us-east-2c 7m50s zhsunaws-n52dn-worker-us-east-2c-ppz5t Running m6i.xlarge us-east-2 us-east-2c 14m zhsunaws-n52dn-worker-us-east-2c-qfg6h Deleting m6i.xlarge us-east-2 us-east-2c 7m50s zhsunaws-n52dn-worker-us-east-2c-qjbld Provisioned m6i.xlarge us-east-2 us-east-2c 21s zhsunaws-n52dn-worker-us-east-2c-qmpg6 Deleting m6i.xlarge us-east-2 us-east-2c 7m50s zhsunaws-n52dn-worker-us-east-2c-qrxcm Provisioned m6i.xlarge us-east-2 us-east-2c 21s zhsunaws-n52dn-worker-us-east-2c-sph5w Provisioning m6i.xlarge us-east-2 us-east-2c 22s zhsunaws-n52dn-worker-us-east-2c-tq8br Deleting m6i.xlarge us-east-2 us-east-2c 7m50s zhsunaws-n52dn-worker-us-east-2c-xjjs7 Deleting m6i.xlarge us-east-2 us-east-2c 7m50s zhsunaws-n52dn-worker-us-east-2c-xtpwj Provisioning m6i.xlarge us-east-2 us-east-2c 21s $ oc get event 17m Normal DrainProceeds machine/zhsunaws-n52dn-worker-us-east-2c-tq8br Node drain proceeds 17m Normal DrainRequeued machine/zhsunaws-n52dn-worker-us-east-2c-tq8br Node drain requeued: requeue in: 20s 17m Normal Deleted machine/zhsunaws-n52dn-worker-us-east-2c-tq8br Node "ip-10-0-223-164.us-east-2.compute.internal" drained 17m Normal DrainSucceeded machine/zhsunaws-n52dn-worker-us-east-2c-tq8br Node drain succeeded
Verified cluterversion: 4.11.0-0.nightly-2022-06-22-015220 Tested on gcp,azure,alicloud,ibm,vsphere,nutanix and osp, all works fine.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Important: OpenShift Container Platform 4.11.0 bug fix and security update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2022:5069