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c0ac25bfff
Readiness as no reasoning to be cluster scope because that is not how the k8s networking works for pods, all the pods to a deployment are not sharing the network in a singleton. Instead they are run as local scopes to themselves, with readiness failures the pod is potentially taken out of the network to be resolvable - this affects the distributed setup in myriad of different ways. Instead readiness should behave like liveness with local scope alone, and should be a dummy implementation. This PR all the startup times and overal k8s startup time dramatically improves. Added another handler called as `/minio/health/cluster` to understand the cluster scope health.
57 lines
1.7 KiB
Go
57 lines
1.7 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2018 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"context"
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"net/http"
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)
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// ClusterCheckHandler returns if the server is ready for requests.
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func ClusterCheckHandler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, w, "ClusterCheckCheckHandler")
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objLayer := newObjectLayerFn()
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// Service not initialized yet
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if objLayer == nil {
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writeResponse(w, http.StatusServiceUnavailable, nil, mimeNone)
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return
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}
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ctx, cancel := context.WithTimeout(ctx, globalAPIConfig.getReadyDeadline())
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defer cancel()
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if !objLayer.IsReady(ctx) {
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writeResponse(w, http.StatusServiceUnavailable, nil, mimeNone)
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return
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}
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writeResponse(w, http.StatusOK, nil, mimeNone)
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}
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// ReadinessCheckHandler Checks if the process is up. Always returns success.
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func ReadinessCheckHandler(w http.ResponseWriter, r *http.Request) {
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// TODO: only implement this function to notify that this pod is
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// busy, at a local scope in future, for now '200 OK'.
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writeResponse(w, http.StatusOK, nil, mimeNone)
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}
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// LivenessCheckHandler - Checks if the process is up. Always returns success.
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func LivenessCheckHandler(w http.ResponseWriter, r *http.Request) {
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writeResponse(w, http.StatusOK, nil, mimeNone)
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}
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