18 lines
836 B
YAML
18 lines
836 B
YAML
---
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features:
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Now the fedora atomic Kubernetes driver can support rolling upgrade for k8s
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version change or the image change. User can call command
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`openstack coe cluster upgrade <cluster ID> <new cluster template ID>` to
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upgrade current cluster to the new version defined in the new cluster
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template. At this moment, only the image change and the kube_tag change
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are supported.
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issues:
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There is a known issue when doing image(operating system) upgrade for k8s
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cluster. Because when doing image change for a server resource, Heat will
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trigger the Nova rebuild to rebuild the instnace and there is no chance to
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call kubectl drain to drain the node, so there could be a very minior
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downtime when doing(starting to do) the rebuild and meanwhile a request
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is routed to that node.
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