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Wait for apiserver to become healthy before starting agent controllers

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It is possible that the apiserver may serve read requests but not allow
writes yet, in which case flannel will crash on startup when trying to
configure the subnet manager.

Fix this by waiting for the apiserver to become fully ready before
starting flannel and the network policy controller.

Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
This commit is contained in:
Brad Davidson 2021-02-26 10:37:27 -08:00 committed by Brad Davidson
parent 9b39c1c117
commit f970e49b7d
1 changed files with 4 additions and 0 deletions
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4
pkg/agent/run.go
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@ -35,6 +35,7 @@ import (
"k8s.io/client-go/kubernetes"
v1 "k8s.io/client-go/kubernetes/typed/core/v1"
"k8s.io/client-go/tools/clientcmd"
"k8s.io/controller-manager/app"
)
var (
@ -98,6 +99,9 @@ func run(ctx context.Context, cfg cmds.Agent, proxy proxy.Proxy) error {
if err != nil {
return err
}
app.WaitForAPIServer(coreClient, 30*time.Second)
if !nodeConfig.NoFlannel {
if err := flannel.Run(ctx, nodeConfig, coreClient.CoreV1().Nodes()); err != nil {
return err