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PodTopology: add notes of possible changed default behavior 

Signed-off-by: Björn Svensson <bjorn.a.svensson@est.tech>
This commit is contained in:
Björn Svensson 2021-09-15 12:38:40 +02:00
parent 574997c97e
commit f160db17d6
1 changed files with 5 additions and 3 deletions
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8
content/en/docs/concepts/workloads/pods/pod-topology-spread-constraints.md
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@ -349,12 +349,14 @@ Also, the legacy `SelectorSpread` plugin, which provides an equivalent behavior,
is disabled.
{{< note >}}
The `PodTopologySpread` plugin does not score the nodes that don't have
the topology keys specified in the spreading constraints. This might result
in a different default behavior compared to the legacy `SelectorSpread` plugin when
using the default topology constraints.
If your nodes are not expected to have **both** `kubernetes.io/hostname` and
`topology.kubernetes.io/zone` labels set, define your own constraints
instead of using the Kubernetes defaults.
The `PodTopologySpread` plugin does not score the nodes that don't have
the topology keys specified in the spreading constraints.
{{< /note >}}
If you don't want to use the default Pod spreading constraints for your cluster,