# Primary shard is not active Timeout : \[1m\]

**URL:** <https://discuss.elastic.co/t/primary-shard-is-not-active-timeout-1m/151515>\
**Category:** Elasticsearch\
**Created:** [October 8, 2018, 8:03pm UTC](https://discuss.elastic.co/t/primary-shard-is-not-active-timeout-1m/151515 "2018-10-08T20:03:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![clgs](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/clgs/32/48363_2.png) [@clgs](https://discuss.elastic.co/u/clgs)\
**Post date:** [October 8, 2018, 8:03pm UTC](https://discuss.elastic.co/t/primary-shard-is-not-active-timeout-1m/151515/1 "2018-10-08T20:03:32Z")

</div>

Hello. Please tell me why this happens?  
We have three servers, all three masters, but we write only on one Server A.  
When Server B is disconnected, the cluster breaks up and Server A and Server C error:

```
server_a:9200 : blocked by: [SERVICE_UNAVAILABLE/2/no master];
and
server_a:9200 : primary shard is not active Timeout: [1m]

```

Then we decided to check and shut down the server C, and the same situation, the cluster collapsed, server A and server B did not respond. Why is this happening?

Configuration:

```
"version" : "5.6.4"

Server A:
node.master: true
node.data: true
node.ingest: false
discovery.zen.ping.unicast.hosts: ["B", "C"]
discovery.zen.minimum_master_nodes: 2

Server B
node.master: true
node.data: true
node.ingest: false
discovery.zen.ping.unicast.hosts: ["C", "A"]
discovery.zen.minimum_master_nodes: 2

Server C
node.master: true
node.data: true
node.ingest: false
discovery.zen.ping.unicast.hosts: ["A", "B"]
discovery.zen.minimum_master_nodes: 2
```

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [November 5, 2018, 8:03pm UTC](https://discuss.elastic.co/t/primary-shard-is-not-active-timeout-1m/151515/2 "2018-11-05T20:03:37Z")

</div>

Closed on November 5, 2018, 8:03pm UTC

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