# ECE Deployment within 2 Zones failed: "Plan change failed: Failed to validate cluster health/prerequisites."

**URL:** <https://discuss.elastic.co/t/ece-deployment-within-2-zones-failed-plan-change-failed-failed-to-validate-cluster-health-prerequisites/287807>\
**Category:** Elastic Cloud Enterprise (ECE)\
**Created:** [October 27, 2021, 2:00pm UTC](https://discuss.elastic.co/t/ece-deployment-within-2-zones-failed-plan-change-failed-failed-to-validate-cluster-health-prerequisites/287807 "2021-10-27T14:00:09Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![Icaka](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/icaka/32/89902_2.png) [@Icaka](https://discuss.elastic.co/u/Icaka)\
**Post date:** [October 27, 2021, 2:00pm UTC](https://discuss.elastic.co/t/ece-deployment-within-2-zones-failed-plan-change-failed-failed-to-validate-cluster-health-prerequisites/287807/1 "2021-10-27T14:00:09Z")

</div>

Hi,

I've spin up new ECE cluster with 6 VMs (2 Controll Plane, 2 Allocators for Hot data and 2 Allocators for Warm data) as half of them are in Zone-1 others in Zone-2 repectively per roles.  
I've setup tags for all my Allocators such as default:true/false, highstorage:true/false. Then I've modified respectively **Instance configurations** for **data.default** mathing only "Hot" allocators and **data.highstorage** to match tags only on "Warm" allcoators. Everytime I've tried to create new deployment it failed on Elasticsearch "Plan successful" step with "_Plan change failed: Failed to validate cluster health/prerequisites._". Detailed error:

```auto
{
  "caused_by": "no.found.constructor.validation.ValidationException: 1. 
Could not ensure capacity allocation for [a56957bfd025492e930a309e7dc03e81] result
 was [{\"type\":\"capacity_by_zone\",\"allocated_instances\":3,
\"mappings\":[{\"key\":\"InstanceConfigurationId(data.default)\",\"mapping\":
{\"invalid\":false,\"logical_to_concrete\":{},\"concrete_to_logical\":{}}}],
\"required_capacity\":{},\"failed_instances\":[{\"instance_name\":
\"not-created-yet\", \"instance_configuration_id\":\"master\",
\"logical_zone_name\": \"tiebreaker\",\"instance_capacity\":1024,
\"type\":\"other\", \"rejections\":{}},{\"instance_name\":
\"not-created-yet\",\"instance_configuration_id\":\"data.default\",
\"logical_zone_name\":\"zone-0\",\"instance_capacity\":2048,\"type\":\"other\",
\"rejections\":{}},{\"instance_name\":\"not-created-yet\",\"instance_configuration_id\":\"data.default\",
\"logical_zone_name\":\"zone-1\",\"instance_capacity\":2048,
\"type\":\"other\",\"rejections\":{}}]}]"
}

```

I have more than 13GB+ RAM 200GB+ storage free on each VM and even when I configure the smallest ES within 2 Zones it failed, when setting only 1 Zone all good. I've tried to create custom Deployment Template providing edited **Instance configurations** for Hot and Warm data without success as well.

Will be happy to give some ideas or solution to my issue.  
Thanks in advance,  
Hristo.

---

<div class="post-metadata">

**Author:** ![Icaka](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/icaka/32/89902_2.png) [@Icaka](https://discuss.elastic.co/u/Icaka)\
**Post date:** [November 2, 2021, 7:44am UTC](https://discuss.elastic.co/t/ece-deployment-within-2-zones-failed-plan-change-failed-failed-to-validate-cluster-health-prerequisites/287807/2 "2021-11-02T07:44:24Z")

</div>

Someone already face this issue?

---

<div class="post-metadata">

**Author:** ![Daniel\_Battaglia](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/daniel_battaglia/32/49649_2.png) [@Daniel\_Battaglia](https://discuss.elastic.co/u/Daniel_Battaglia)\
**Post date:** [November 2, 2021, 12:06pm UTC](https://discuss.elastic.co/t/ece-deployment-within-2-zones-failed-plan-change-failed-failed-to-validate-cluster-health-prerequisites/287807/3 "2021-11-02T12:06:52Z")

</div>

> [@Icaka](#):
>
> ```auto
> "instance_configuration_id\":\"master\",
> \"logical_zone_name\": \"tiebreaker\"
> 
> ```

I think what is happening is ECE is trying to inject a "tiebreaker" node with instance configuration type "master" since 2 node clusters are not a safe quorum, and it does not have anywhere to allocate this based on the template. [High availability | Elastic Cloud Enterprise Reference [3.6] | Elastic](https://www.elastic.co/guide/en/cloud-enterprise/current/ece-ha.html)

---

<div class="post-metadata">

**Author:** ![Icaka](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/icaka/32/89902_2.png) [@Icaka](https://discuss.elastic.co/u/Icaka)\
**Post date:** [November 4, 2021, 1:28pm UTC](https://discuss.elastic.co/t/ece-deployment-within-2-zones-failed-plan-change-failed-failed-to-validate-cluster-health-prerequisites/287807/4 "2021-11-04T13:28:36Z")

</div>

Hi Daniel,

I must agree that, this is the issue. Just to be clear, In order to have 2 zones ECE cluster and deployments, I need 3 zones, where last 3rd zone could container only 1 node for Master/tierbreaker to provide quorum if one zone failed? So every deployment with 2 Zones should have Allocators in 3 zones and that 3rd zone allocator should be tagged to be only "master" in Instance configuration? I don't get how to set deployment, 2 zones for data, and need more than 6 nodes to "activate" master node:

> Master nodes  
> Dedicated master nodes will be automatically added once you reach 6 Elasticsearch nodes across all zones.

Thanks for your assistance!  
Hristo.

---

<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 18, 2021, 1:29pm UTC](https://discuss.elastic.co/t/ece-deployment-within-2-zones-failed-plan-change-failed-failed-to-validate-cluster-health-prerequisites/287807/5 "2021-11-18T13:29:18Z")

</div>

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.