Elasticsearch 8.11.3 Upgrade Needed

In need of an experienced Elasticsearch expert to upgrade our current 7.x Elasticsearch version to 8.11.3. This need arises mainly due to:

- Interest in newer features offered in the 8.11.3 version
- Improvement of Elasticsearch error handling
- Steps to upgrade process effectively

Expectedly, having hands-on experience with Elasticsearch, understanding its upgrade process, and familiarity with its new features is crucial. Demonstrable proficiency in handling Elasticsearch errors is highly desirable. Your bid should include a tentative timeline for the task.


Before upgarde

1. check cluster health and if red make it green or yellow. If cluster is in red status it might be many scenerio
2. snapshot of elasticsearch
3. check elasticsearch version
4. while doing upgarde disable shards is neccessary or not


After upgarde

1. check elasticsearch cluster health if green and all shards are assigned properly. if red/yellow then what neccessary things required to change cluster status as green.
2. check elasticsearch version
3. enable shards allocation
4. restore snapshot of elasticsearch data
5. master not discover issue and any data loss should not come