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Update upgrades.md

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Karol Chrapek 2018-09-13 15:50:42 +02:00
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@ -18,6 +18,11 @@ versions. Here are all version vars for each component:
* flannel_version
* kubedns_version
Please remember that some components upgrade depends on minimum installed version.
In example **calico version 2.6.5 upgrade to 3.1.1 is upgrading etcd store to etcdv3**.
The kubespray stack upgrade would failed when calico version is below 2.6.5. Please check
components' documentation and always upgrade test environment first.
#### Unsafe upgrade example
If you wanted to upgrade just kube_version from v1.4.3 to v1.4.6, you could
@ -86,7 +91,7 @@ for impact to user deployed pods.
A deployer may want to upgrade specific components in order to minimize risk
or save time. This strategy is not covered by CI as of this writing, so it is
not guaranteed to work.
not guaranteed to work.
These commands are useful only for upgrading fully-deployed, healthy, existing
hosts. This will definitely not work for undeployed or partially deployed