Description of problem: bootkube.sh is not re-entrant (and will not run properly) if it was stopped midway through running.
> Jul 23 18:02:39 bootstrap systemd: Stopped Bootstrap a Kubernetes cluster.
> Jul 23 18:02:46 bootstrap systemd: Started Bootstrap a Kubernetes cluster.
> Jul 23 18:03:01 bootstrap bootkube.sh: Starting etcd certificate signer...
> Jul 23 18:03:02 bootstrap bootkube.sh: error creating container storage: the container name "etcd-signer" is already in use by "01b3ece5e73cee6a197fdc641cd362a05e40c26611a9b2a230700ab26e614af1". You have to remove that container to be able to reuse that name.: that name is already in use
> Jul 23 18:03:02 bootstrap bootkube.sh: 01b3ece5e73cee6a197fdc641cd362a05e40c26611a9b2a230700ab26e614af1
> Jul 23 18:03:02 bootstrap systemd: bootkube.service: Main process exited, code=exited, status=125/n/a
> Jul 23 18:03:02 bootstrap systemd: bootkube.service: Failed with result 'exit-code'.
Version-Release number of selected component (if applicable): 4.1.x
How reproducible: 100%
Steps to Reproduce:
1. Start UPI install
2. SSH to bootstrap system
3. sudo systemctl stop bootkube.service
4. ### Debug install issue
5. sudo systemctl start bootkube.service
Actual results: See error above.
The bootkube.sh service should when started (clean up any previous invocations and restart) or (bypass things its already done - which it does in some cases).
Alternatively a bootkube_cleanup.sh script should be provided to run inbetween stop and start issue (and should be messaged to a user should bootkube.sh fail).
If the user wants to configure the bootstrap-host, the recommended mechanism is through ignition. But i think we will try to make bootkube re-entrant. updating priority because better method is available.
The reason for this needing to be re-entrant is not to make or adjust configurations.
Often times it's to complete or continue a failed install. For example a miss-condigured load balancer.
Pods will/can get out of sync and having a way to restart or continue the install process to complete an install over having to re-deploy a system can cave man hrs (given the installer only gives you ~24 hrs to complete the installer) the time pressure here can be too much for some customers.
bootkube.sh retries over and over but this appears to require a change to the inputs, without a clear usecase closing this