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Report KCM as unhealthy if leader election is wedged.

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Feedback from lavalamp and deads2k.
Changed Check() logic to be central to LeaderElector.
Further changes, especially cleaning up the test code.
This commit is contained in:
Walter Fender
2018-11-12 18:45:21 -08:00
parent 5a84dffc75
commit 9c43ee6d6e
10 changed files with 324 additions and 13 deletions
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7
cmd/controller-manager/app/serve.go
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@@ -17,11 +17,10 @@ limitations under the License.
package app
import (
"github.com/prometheus/client_golang/prometheus"
"net/http"
goruntime "runtime"
"github.com/prometheus/client_golang/prometheus"
apiserverconfig "k8s.io/apiserver/pkg/apis/config"
genericapifilters "k8s.io/apiserver/pkg/endpoints/filters"
apirequest "k8s.io/apiserver/pkg/endpoints/request"
@@ -53,9 +52,9 @@ func BuildHandlerChain(apiHandler http.Handler, authorizationInfo *apiserver.Aut
}
// NewBaseHandler takes in CompletedConfig and returns a handler.
func NewBaseHandler(c *apiserverconfig.DebuggingConfiguration) *mux.PathRecorderMux {
func NewBaseHandler(c *apiserverconfig.DebuggingConfiguration, checks ...healthz.HealthzChecker) *mux.PathRecorderMux {
mux := mux.NewPathRecorderMux("controller-manager")
healthz.InstallHandler(mux)
healthz.InstallHandler(mux, checks...)
if c.EnableProfiling {
routes.Profiling{}.Install(mux)
if c.EnableContentionProfiling {