Hi,
First it is not the first time i am sharing the issues that i am encountering and hopefully this time somebody will help me with that !!!
So i have an ELK cluster that is running on premise on a rancher k8s based on 3 VMs with the following resources: 32 RAM and 8 CPU and unlimited storage ( volume mount).
The cluster is created to save automation python logs that are directed to Logstash APP already structured using logstash_async module. Every python script creating new unique index and its logs will create new indices with same index created which could be hundred of logs.
I deployed logstash ( 3 replicas),elasticsearch(3 replicas) and kibana(1 replica) using Helm Charts ( I can share them if needed).
I did not configure anything in any chart something that related to shards.
The application working fine for a period of time let's say one month and then everything starts to break mainly in the elasticsearch pods:
total shards, but this cluster currently has [3000]/[3000] maximum shards open;"}}}}
> 7/28/2021 6:09:42 PM [2021-07-28T15:09:42,731][WARN ][logstash.outputs.elasticsearch][main] Could not index event to Elasticsearch. {:status=>400, :action=>["index", {:_id=>nil, :_index=>"qascreencapture-1627484927937893928", :routing=>nil, :_type=>"_doc"}, #<LogStash::Event:0x34f50dc7>], :response=>{"index"=>{"_index"=>"qascreencapture-1627484927937893928", "_type"=>"_doc", "_id"=>nil, "status"=>400, "error"=>{"type"=>"validation_exception", "reason"=>"Validation Failed: 1: this action would add [2] total shards, but this cluster currently has [3000]/[3000] maximum shards open;"}}}}
I fixed that by the following :curl -XPUT -H 'Content-Type: application/json' 'IP-OF-ELASTIC-SERVER:9200/_cluster/settings' -d '{ "persistent" : {"cluster.max_shards_per_node" : 5000}}'
I am pretty sure that this is not the way to correct to do that and there some other solutions that i need here your suggestions. Then after that everything worked well till i got new errors related to JVM and HEAP but mainly related to the change i made with shards.
Please help me.
10x,
Dawoods