822eb5ddc7
This PR refactors object layer handling such that upon failure in sub-system initialization server reaches a stage of safe-mode operation wherein only certain API operations are enabled and available. This allows for fixing many scenarios such as - incorrect configuration in vault, etcd, notification targets - missing files, incomplete config migrations unable to read encrypted content etc - any other issues related to notification, policies, lifecycle etc
120 lines
2.9 KiB
Go
120 lines
2.9 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2019 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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"time"
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"github.com/minio/minio/cmd/logger"
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)
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const defaultMonitorNewDiskInterval = time.Minute * 10
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func initLocalDisksAutoHeal() {
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go monitorLocalDisksAndHeal()
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}
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// monitorLocalDisksAndHeal - ensures that detected new disks are healed
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// 1. Only the concerned erasure set will be listed and healed
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// 2. Only the node hosting the disk is responsible to perform the heal
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func monitorLocalDisksAndHeal() {
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// Wait until the object layer is ready
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var objAPI ObjectLayer
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for {
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objAPI = newObjectLayerWithoutSafeModeFn()
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if objAPI == nil {
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time.Sleep(time.Second)
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continue
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}
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break
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}
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sets, ok := objAPI.(*xlSets)
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if !ok {
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return
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}
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ctx := context.Background()
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var bgSeq *healSequence
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var found bool
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for {
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bgSeq, found = globalBackgroundHealState.getHealSequenceByToken(bgHealingUUID)
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if found {
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break
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}
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time.Sleep(time.Second)
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}
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// Perform automatic disk healing when a new one is inserted
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for {
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time.Sleep(defaultMonitorNewDiskInterval)
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localDisksToHeal := []Endpoint{}
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for _, endpoint := range globalEndpoints {
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if !endpoint.IsLocal {
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continue
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}
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// Try to connect to the current endpoint
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// and reformat if the current disk is not formatted
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_, _, err := connectEndpoint(endpoint)
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if err == errUnformattedDisk {
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localDisksToHeal = append(localDisksToHeal, endpoint)
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}
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}
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if len(localDisksToHeal) == 0 {
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continue
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}
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// Reformat disks
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bgSeq.sourceCh <- SlashSeparator
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// Ensure that reformatting disks is finished
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bgSeq.sourceCh <- nopHeal
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// Compute the list of erasure set to heal
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var erasureSetToHeal []int
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for _, endpoint := range localDisksToHeal {
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// Load the new format of this passed endpoint
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_, format, err := connectEndpoint(endpoint)
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if err != nil {
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logger.LogIf(ctx, err)
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continue
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}
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// Calculate the set index where the current endpoint belongs
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setIndex, _, err := findDiskIndex(sets.format, format)
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if err != nil {
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logger.LogIf(ctx, err)
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continue
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}
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erasureSetToHeal = append(erasureSetToHeal, setIndex)
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}
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// Heal all erasure sets that need
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for _, setIndex := range erasureSetToHeal {
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xlObj := sets.sets[setIndex]
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err := healErasureSet(ctx, setIndex, xlObj)
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if err != nil {
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logger.LogIf(ctx, err)
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}
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}
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}
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}
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