# No alive nodes found in your cluster
**URL:** https://discuss.elastic.co/t/no-alive-nodes-found-in-your-cluster/272216
**Category:** Elasticsearch
**Created:** [May 5, 2021, 4:45pm UTC](https://discuss.elastic.co/t/no-alive-nodes-found-in-your-cluster/272216 "2021-05-05T16:45:35Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@chrisan](https://discuss.elastic.co/u/chrisan)
#### Post date: [May 5, 2021, 4:45pm UTC](https://discuss.elastic.co/t/no-alive-nodes-found-in-your-cluster/272216/1 "2021-05-05T16:45:35Z")
I'm on Ubuntu 20.04 with Elasticsearch 7.10.2 (though this has happened in previous minor versions too)
We have a PHP script that runs every night using 7.12.0 of the PHP SDK where it re-indexes live documents and deletes old documents no longer considered live in our CMS. The basic loop is
for each company
- re-index live stuff
- delete old stuff
Every so often, maybe every 5-7 days one of the nights we will see an error of "No alive nodes found in your cluster" after trying to do a delete
```auto
$deleteCompanyParams = [
'refresh' => true,
'index' => "{$company->slug}_{$company->id}",
'body' => [
'query' => [
'terms' => [
'publication_id' => array_values($oldPublicationIds->toArray())
]
]
]
];
$client->deleteByQuery($deleteCompanyParams);
```
Any ideas on what can cause this sporadic behavior?
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [May 6, 2021, 12:10am UTC](https://discuss.elastic.co/t/no-alive-nodes-found-in-your-cluster/272216/2 "2021-05-06T00:10:32Z")
Is there anything matching that time in your Elasticsearch master logs that might provide a hint?
---
### Author:  [@chrisan](https://discuss.elastic.co/u/chrisan)
#### Post date: [May 6, 2021, 10:49am UTC](https://discuss.elastic.co/t/no-alive-nodes-found-in-your-cluster/272216/3 "2021-05-06T10:49:32Z")
Hmm, I see I have more digging to do.
```auto
[2021-05-05T08:00:00,365][INFO][o.e.n.Node] [prod.v2.elasticsearch] stopping ...
[2021-05-05T08:00:00,551][INFO][o.e.x.w.WatcherService] [prod.v2.elasticsearch] stopping watch service, reason [shutdown initiated]
```
Looks like `unattended-upgrades` began then.
Thank you and sorry to clog up the forums needlessly!
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [June 3, 2021, 10:50am UTC](https://discuss.elastic.co/t/no-alive-nodes-found-in-your-cluster/272216/4 "2021-06-03T10:50:30Z")
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