# Any guideline about updating elasticsearch cluster

**URL:** <https://discuss.elastic.co/t/any-guideline-about-updating-elasticsearch-cluster/9244>\
**Category:** Elasticsearch\
**Created:** [October 4, 2012, 6:22pm UTC](https://discuss.elastic.co/t/any-guideline-about-updating-elasticsearch-cluster/9244 "2012-10-04T18:22:28Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Jae](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jae/32/791_2.png) [@Jae](https://discuss.elastic.co/u/Jae)\
**Post date:** [October 4, 2012, 6:22pm UTC](https://discuss.elastic.co/t/any-guideline-about-updating-elasticsearch-cluster/9244/1 "2012-10-04T18:22:28Z")

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Hi

I am updating elasticsearch cluster from 0.19.9 to 0.19.10. Minor version  
update is not the main reason of cluster update but I installed  
elasticsearch as a daemon tool process.

I am updating one by one. After restarting elasitcsearch, I am waiting  
until the cluster health status is turning to green from yellow but it's  
taking too long. I've waited more than 20 minutes, but it's still yellow.

Is there any guideline about cluster update?

Thank you  
Best, Jae

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**Author:** ![ppearcy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ppearcy/32/980_2.png) [@ppearcy](https://discuss.elastic.co/u/ppearcy)\
**Post date:** [October 6, 2012, 6:13am UTC](https://discuss.elastic.co/t/any-guideline-about-updating-elasticsearch-cluster/9244/2 "2012-10-06T06:13:08Z")

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Hi,  
I believe this is to be expected. The documents in each shard replica are  
kept in sync, however, the underlying index files will get out of sync.  
When a node is restarted, it starts syncing the any index files that are  
out of sync. See here for more details:  
[https://groups.google.com/forum/?fromgroups=#!topic/elasticsearch/XaVunruPg7M](https://groups.google.com/forum/?fromgroups=#!topic/elasticsearch/XaVunruPg7M)

It would be nice to be able to lock the cluster during upgrades, which  
would still allow searches, but any index operations would be rejected  
which would avoid needing to sync over all the files.

Best Regards,  
Paul

On Thursday, October 4, 2012 12:22:28 PM UTC-6, Jae wrote:

> Hi
> 
> I am updating elasticsearch cluster from 0.19.9 to 0.19.10. Minor version  
> update is not the main reason of cluster update but I installed  
> elasticsearch as a daemon tool process.
> 
> I am updating one by one. After restarting elasitcsearch, I am waiting  
> until the cluster health status is turning to green from yellow but it's  
> taking too long. I've waited more than 20 minutes, but it's still yellow.
> 
> Is there any guideline about cluster update?
> 
> Thank you  
> Best, Jae

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 3:09am UTC](https://discuss.elastic.co/t/any-guideline-about-updating-elasticsearch-cluster/9244/3 "2017-07-06T03:09:54Z")

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Closed on July 6, 2017, 3:09am UTC