# \[Elasticsearch 7.6\] How do I fix unassigned shards issue **URL:** \ **Category:** Elasticsearch\ **Created:** [April 19, 2020, 8:33am UTC](https://discuss.elastic.co/t/elasticsearch-7-6-how-do-i-fix-unassigned-shards-issue/228714 "2020-04-19T08:33:08Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Ahmed\_Abdulaleem](https://avatars.discourse-cdn.com/v4/letter/a/90ced4/32.png) [@Ahmed\_Abdulaleem](https://discuss.elastic.co/u/Ahmed_Abdulaleem)\ **Post date:** [April 19, 2020, 8:33am UTC](https://discuss.elastic.co/t/elasticsearch-7-6-how-do-i-fix-unassigned-shards-issue/228714/1 "2020-04-19T08:33:09Z")
Hello, I installed an elastic search cluster consists of 3 nodes. after data had been ingested to the cluster, the status of the cluster became yellow due to unassigned shards issue. ![image](https://us1.discourse-cdn.com/elastic/original/3X/6/0/6073d976036130233389d7b30a26f0bd7063b249.png) ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [April 19, 2020, 9:06am UTC](https://discuss.elastic.co/t/elasticsearch-7-6-how-do-i-fix-unassigned-shards-issue/228714/2 "2020-04-19T09:06:41Z")
Use the [cluster allocation explain API](https://www.elastic.co/guide/en/elasticsearch/reference/7.6/cluster-allocation-explain.html) to determine why it is not getting allocated. ---
**Author:** ![Ahmed\_Abdulaleem](https://avatars.discourse-cdn.com/v4/letter/a/90ced4/32.png) [@Ahmed\_Abdulaleem](https://discuss.elastic.co/u/Ahmed_Abdulaleem)\ **Post date:** [April 19, 2020, 1:32pm UTC](https://discuss.elastic.co/t/elasticsearch-7-6-how-do-i-fix-unassigned-shards-issue/228714/3 "2020-04-19T13:32:51Z")
Thank You @Christian_Dahlqvist i executed the api and the result was ![image](https://us1.discourse-cdn.com/elastic/original/3X/b/6/b6a26cf4e8bb0d03a188c5dc760a7f993ba5fd9c.png) have i delete this index to make cluster health status green ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [April 19, 2020, 2:09pm UTC](https://discuss.elastic.co/t/elasticsearch-7-6-how-do-i-fix-unassigned-shards-issue/228714/4 "2020-04-19T14:09:02Z")
What was the full explanation? ---
**Author:** ![Ahmed\_Abdulaleem](https://avatars.discourse-cdn.com/v4/letter/a/90ced4/32.png) [@Ahmed\_Abdulaleem](https://discuss.elastic.co/u/Ahmed_Abdulaleem)\ **Post date:** [April 20, 2020, 9:02am UTC](https://discuss.elastic.co/t/elasticsearch-7-6-how-do-i-fix-unassigned-shards-issue/228714/5 "2020-04-20T09:02:03Z")
Many Thanks @Christian_Dahlqvist please find all response { "index" : ".apm-agent-configuration", "shard" : 0, "primary" : false, "current\_state" : "unassigned", "unassigned\_info" : { "reason" : "INDEX\_CREATED", "at" : "2020-04-19T09:57:52.709Z", "last\_allocation\_status" : "no\_attempt" }, "can\_allocate" : "no", "allocate\_explanation" : "cannot allocate because allocation is not permitted to any of the nodes", "node\_allocation\_decisions" : [ { "node\_id" : "id1", "node\_name" : "server01", "transport\_address" : "ip01", "node\_attributes" : { "ml.machine\_memory" : "33567191040", "ml.max\_open\_jobs" : "20", "xpack.installed" : "true" }, "node\_decision" : "no", "weight\_ranking" : 1, "deciders" : [ { "decider" : "node\_version", "decision" : "NO", "explanation" : "cannot allocate replica shard to a node with version [7.6.1] since this is older than the primary version [7.6.2]" } ] }, { "node\_id" : "id2", "node\_name" : "server02", "transport\_address" : "ip02", "node\_attributes" : { "ml.machine\_memory" : "33567191040", "ml.max\_open\_jobs" : "20", "xpack.installed" : "true" }, "node\_decision" : "no", "weight\_ranking" : 2, "deciders" : [ { "decider" : "node\_version", "decision" : "NO", "explanation" : "cannot allocate replica shard to a node with version [7.6.1] since this is older than the primary version [7.6.2]" } ] }, { "node\_id" : "id03", "node\_name" : "server03", "transport\_address" : "ip03", "node\_attributes" : { "ml.machine\_memory" : "33567195136", "ml.max\_open\_jobs" : "20", "xpack.installed" : "true" }, "node\_decision" : "no", "weight\_ranking" : 3, "deciders" : [ { "decider" : "same\_shard", "decision" : "NO", "explanation" : "the shard cannot be allocated to the same node on which a copy of the shard already exists [[.apm-agent-configuration][0], node[id03], [P], s[STARTED], a[id=-........]]" } ] } ] } ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [April 20, 2020, 9:57am UTC](https://discuss.elastic.co/t/elasticsearch-7-6-how-do-i-fix-unassigned-shards-issue/228714/6 "2020-04-20T09:57:07Z")
You have mixed versions in your cluster which is interfering with the allocation. Please make sure all nodes are running EXACTLY the same version. ---
**Author:** ![Ahmed\_Abdulaleem](https://avatars.discourse-cdn.com/v4/letter/a/90ced4/32.png) [@Ahmed\_Abdulaleem](https://discuss.elastic.co/u/Ahmed_Abdulaleem)\ **Post date:** [April 20, 2020, 11:53am UTC](https://discuss.elastic.co/t/elasticsearch-7-6-how-do-i-fix-unassigned-shards-issue/228714/7 "2020-04-20T11:53:42Z")
Thank You @Christian_Dahlqvist i checked the three node 2 node with Elastisearch 7.6.1 version 1 node with Elastisearch 7.6.2 version Please can you advise me how can i fix this issue without make production down . where application is up running and it's critical situation ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [April 20, 2020, 12:13pm UTC](https://discuss.elastic.co/t/elasticsearch-7-6-how-do-i-fix-unassigned-shards-issue/228714/8 "2020-04-20T12:13:22Z")
Do a rolling upgrade to 7.6.2 ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [May 18, 2020, 12:19pm UTC](https://discuss.elastic.co/t/elasticsearch-7-6-how-do-i-fix-unassigned-shards-issue/228714/9 "2020-05-18T12:19:05Z")
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