Error Message: Unable to perform search query Index not found for query: graylog_8. Try recalculating your index ranges

Hi Team, Getting Following error,

Could you please help me to resolve this issue.

Indexes are also not showing

Logs from Graylog Server.log

“Incorrect HTTP method for uri [/graylog_*/_aliases] and method [GET], allowed: [PUT]”

at org.graylog2.indexer.cluster.jest.JestUtils.specificException(JestUtils.java:95) ~[graylog.jar:?]

at org.graylog2.indexer.cluster.jest.JestUtils.execute(JestUtils.java:57) ~[graylog.jar:?]

at org.graylog2.indexer.cluster.jest.JestUtils.execute(JestUtils.java:62) ~[graylog.jar:?]

at org.graylog2.indexer.indices.Indices.getIndexNamesAndAliases(Indices.java:308) ~[graylog.jar:?]

at org.graylog2.indexer.MongoIndexSet.getNewestIndexNumber(MongoIndexSet.java:151) ~[graylog.jar:?]

at org.graylog2.indexer.MongoIndexSet.getNewestIndex(MongoIndexSet.java:146) ~[graylog.jar:?]

at org.graylog2.indexer.rotation.strategies.AbstractRotationStrategy.rotate(AbstractRotationStrategy.java:61) ~[graylog.jar:?]

at org.graylog2.periodical.IndexRotationThread.checkForRotation(IndexRotationThread.java:113) ~[graylog.jar:?]

at org.graylog2.periodical.IndexRotationThread.lambda$doRun$0(IndexRotationThread.java:77) ~[graylog.jar:?]

at java.lang.Iterable.forEach(Iterable.java:75) [?:1.8.0_211]

at org.graylog2.periodical.IndexRotationThread.doRun(IndexRotationThread.java:73) [graylog.jar:?]

at org.graylog2.plugin.periodical.Periodical.run(Periodical.java:77) [graylog.jar:?]

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_211]

at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_211]

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_211]

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [?:1.8.0_211]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_211]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_211]

at java.lang.Thread.run(Thread.java:748) [?:1.8.0_211]

2019-08-13T03:39:22.024-04:00 INFO [IndexRetentionThread] Elasticsearch cluster not available, skipping index retention checks.

2019-08-13T03:39:22.032-04:00 ERROR [IndexRotationThread] Couldn’t point deflector to a new index

org.graylog2.indexer.ElasticsearchException: Couldn’t collect aliases for index pattern graylog_*

I guess you should check your Elasticsearch - because Graylog can’t connect to that and it looks like it is having issues.