Showing status : Red and request timeout after 3000ms

[irobot678 (meNotHuman)]

HI ,
i am new to elk stack and i have no idea why i am getting the following error in kibana and after few webpage refreshes it working again.

and also if i try to search the keyword its taking lot of time it never happend like this before and im so clueless about it .

please help me solve it.

[Christian_Dahlqvist]

Kibana depends on Elasticsearch for processing so if it is slow it can be that your Elasticsearch cluster is overloaded. What is the output of the _cat/health API?

[irobot678 (meNotHuman)]

thanks @Christian_Dahlqvist for replying in a short time

today its fine and working
here is the output of _cat/health :
1559724725 08:52:05 escluster green 7 2 502 251 0 0 0 0 - 100.0%

but on that particular day all of sudden the kibana displayed status : red

by default the heapsize will be 1GB right ? but why its showing 297.74 mb

is this problem solves if i just increase the heap size ? can you please update me