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* https://trello.com/c/TeaEB9fX/307-3-deprecate-node-evacuation
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* Added checks to make ci for yaml linting
* Modified y(a)ml files to pass lint checks
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In 3.3 one of our services lays down a systemd drop-in for configuring
Docker networking to use lbr0. In 3.4, this has been changed but the
file must be cleaned up manually by us.
However, after removing the file docker requires a restart. This had big
implications particularly in containerized environments where upgrade is
a very fragile series of upgrading and service restarts.
To avoid double docker restarts, and thus double service restarts in
containerized environments, this change does the following:
- Skip restart during docker upgrade, if it is required. We will restart
on our own later.
- Skip containerized service restarts when we upgrade the services
themselves.
- Clean shutdown of all containerized services.
- Restart Docker. (always, previously this only happened if it needed an
upgrade)
- Ensure all containerized services are restarted.
- Restart rpm node services. (always)
- Mark node schedulable again.
At the end of this process, docker0 should be back on the system.
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containerized.
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This reverts commit 1f2276fff1e41c1d9440ee8b589042ee249b95d7.
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Found bug syncing binaries to containerized hosts where if a symlink was
pre-existing, but pointing to the wrong destination, it would not be
corrected.
Switched to using oc adm instead of oadm.
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This can fail with a transient "object has been modified" error asking
you to re-try your changes on the latest version of the object.
Allow up to three retries to see if we can get the change to take
effect.
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This improves the situation further and prevents configuration changes
from accidentally triggering docker restarts, before we've evacuated
nodes. Now in two places, we skip the role entirely, instead of previous
implementation which only skipped upgrading the installed version.
(which did not catch config issues)
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