Do not attempt to join Windows agents to memberlist cluster #5434
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Windows Nodes should not join the memberlist cluster as all features relying on it is not only supported on Windows. Currently an agent only runs the memberlist module and listen to the memberlist port when required so attempts to join Windows agents are destined to fail, leading to misleading error logs. This commit fixes it by ignoring Windows Nodes when joining agents. Signed-off-by: Quan Tian <qtian@vmware.com>
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antoninbas
reviewed
Aug 24, 2023
| func (c *Cluster) handleCreateNode(obj interface{}) { | ||
| node := obj.(*corev1.Node) | ||
| if !shouldJoinCluster(node) { |
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not worth it to have a filtered node informer based on the label, and avoid the calls to shouldJoinCluster? (or maybe not possible?)
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It's possible but may be not worth as other modules need all Nodes so an unfiltered node informer is required anyway. If we create a filtered node informer, it will create another connection to kube-apiserver and store a copy of linux nodes:
// NewFilteredNodeInformer constructs a new informer for Node type.
// Always prefer using an informer factory to get a shared informer instead of getting an independent
// one. This reduces memory footprint and number of connections to the server.
antoninbas
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Aug 25, 2023
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Windows Nodes should not join the memberlist cluster as all features relying on it is not only supported on Windows. Currently an agent only runs the memberlist module and listen to the memberlist port when required so attempts to join Windows agents are destined to fail, leading to misleading error logs.
This commit fixes it by ignoring Windows Nodes when joining agents.
Fixes #5431
Confirmed the error logs are gone in a mixed OS testbed.