Details
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Bug
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Resolution: Fixed
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Major
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2.0.2, 2.0.3
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None
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4: Deliver Training, More 2.2
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1
Description
Description:
The Operator does not prevent bucket creation where the bucket shares the same `spec.name` which then leads to a rebalance loop.
Steps to re-create:
1) Create 2 buckets with the following:
apiVersion: couchbase.com/v2
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kind: CouchbaseBucket
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metadata:
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name: bucket-test
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labels:
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cluster: cb-bucket
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spec:
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name: travel-sample
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memoryQuota: 256Mi
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replicas: 2 |
ioPriority: low
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evictionPolicy: valueOnly
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conflictResolution: seqno
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enableFlush: false |
enableIndexReplica: true |
compressionMode: passive
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---
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apiVersion: couchbase.com/v2
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kind: CouchbaseBucket
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metadata:
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name: bucket-test2
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labels:
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cluster: cb-bucket
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spec:
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name: travel-sample
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memoryQuota: 256Mi
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replicas: 1 |
ioPriority: low
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evictionPolicy: valueOnly
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conflictResolution: seqno
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enableFlush: false |
enableIndexReplica: true |
compressionMode: passive
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---
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Note that because the spec.name is the same, only 1 bucket is created in the UI, but there are 2 bucket resources with different replicas numbers.
Problem
Because there is only 1 bucket, but the replicas config is different for the 2 bucket resources, this causes a rebalance loop
{"level":"info","ts":1608668413.5445578,"logger":"couchbaseutil","msg":"Rebalancing","cluster":"default/cb-example","progress":0} |
{"level":"info","ts":1608668417.5856192,"logger":"couchbaseutil","msg":"Rebalancing","cluster":"default/cb-example","progress":11.17074490238426} |
{"level":"info","ts":1608668421.5996935,"logger":"couchbaseutil","msg":"Rebalancing","cluster":"default/cb-example","progress":23.50740198470799} |
{"level":"info","ts":1608668425.6037364,"logger":"couchbaseutil","msg":"Rebalancing","cluster":"default/cb-example","progress":33.33333333333334} |
{"level":"info","ts":1608668429.61321,"logger":"cluster","msg":"Rebalance completed successfully","cluster":"default/cb-example"} |
{"level":"info","ts":1608668429.657344,"logger":"cluster","msg":"Reconcile completed","cluster":"default/cb-example"} |
{"level":"info","ts":1608668429.6791978,"logger":"cluster","msg":"Resource updated","cluster":"default/cb-example","diff":" strings.Join({\n \t... // 7 identical lines\n \t\"name: travel-sample\",\n \t`password: \"\"`,\n- \t\"replicas: 2\",\n+ \t\"replicas: 1\",\n \t\"type: couchbase\",\n \t\"\",\n }, \"\\n\")\n"} |
{"level":"info","ts":1608668429.684283,"logger":"cluster","msg":"Bucket updated","cluster":"default/cb-example","name":"travel-sample"} |
{"level":"info","ts":1608668430.24219,"logger":"couchbaseutil","msg":"Cluster status","cluster":"default/cb-example","balance":"unbalanced","rebalancing":false} |
{"level":"info","ts":1608668430.2422225,"logger":"couchbaseutil","msg":"Node status","cluster":"default/cb-example","name":"cb-example-0001","version":"6.5.1","class":"data_services","managed":true,"status":"active"} |
{"level":"info","ts":1608668430.2422285,"logger":"couchbaseutil","msg":"Node status","cluster":"default/cb-example","name":"cb-example-0002","version":"6.5.1","class":"data_services","managed":true,"status":"active"} |
{"level":"info","ts":1608668430.2422316,"logger":"couchbaseutil","msg":"Node status","cluster":"default/cb-example","name":"cb-example-0003","version":"6.5.1","class":"data_services","managed":true,"status":"active"} |
{"level":"info","ts":1608668434.0608795,"logger":"couchbaseutil","msg":"Rebalancing","cluster":"default/cb-example","progress":0} |
{"level":"info","ts":1608668438.0969598,"logger":"couchbaseutil","msg":"Rebalancing","cluster":"default/cb-example","progress":16.95932546071874} |
{"level":"info","ts":1608668442.107232,"logger":"couchbaseutil","msg":"Rebalancing","cluster":"default/cb-example","progress":31.41174175038058} |
{"level":"info","ts":1608668446.1163557,"logger":"cluster","msg":"Rebalance completed successfully","cluster":"default/cb-example"} |
{"level":"info","ts":1608668446.1664069,"logger":"cluster","msg":"Reconcile completed","cluster":"default/cb-example"} |
{"level":"info","ts":1608668446.1868594,"logger":"cluster","msg":"Resource updated","cluster":"default/cb-example","diff":" strings.Join({\n \t... // 7 identical lines\n \t\"name: travel-sample\",\n \t`password: \"\"`,\n- \t\"replicas: 1\",\n+ \t\"replicas: 2\",\n \t\"type: couchbase\",\n \t\"\",\n }, \"\\n\")\n"} |
{"level":"info","ts":1608668446.1911297,"logger":"cluster","msg":"Bucket updated","cluster":"default/cb-example","name":"travel-sample"} |
{"level":"info","ts":1608668447.1387665,"logger":"couchbaseutil","msg":"Cluster status","cluster":"default/cb-example","balance":"unbalanced","rebalancing":false} |
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We should not allow 2 buckets with the same `spec.name` to be created even though the `metadata.name` is different
Attachments
| For Gerrit Dashboard: K8S-1872 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 145793,4 | K8S-1872: Bucket Name Collisions | master | couchbase-operator | Status: MERGED | +2 | +1 |