问题
I am dealing with CRDs and creating Custom resources. I need to keep lots of information about my application in the Custom resource. As per the official doc, etcd works with request up to 1.5MB. I am hitting errors something like
"error": "Request entity too large: limit is 3145728"
I believe the specified limit in the error is 3MB. Any thoughts around this? Any way out for this problem?
回答1:
- The
"error": "Request entity too large: limit is 3145728"is probably the default response from kubernetes handler for objects larger than 3MB, as you can see here at L305 of the source code:
expectedMsgFor1MB := `etcdserver: request is too large`
expectedMsgFor2MB := `rpc error: code = ResourceExhausted desc = trying to send message larger than max`
expectedMsgFor3MB := `Request entity too large: limit is 3145728`
expectedMsgForLargeAnnotation := `metadata.annotations: Too long: must have at most 262144 bytes`
The ETCD has indeed a 1.5MB limit for processing a file and you will find on ETCD Documentation a suggestion to try the
--max-request-bytesflag but it would have no effect on a GKE cluster because you don't have such permission on master node.But even if you did, it would not be ideal because usually this error means that you are consuming the objects instead of referencing them which would degrade your performance.
I highly recommend that you consider instead these options:
- Determine whether your object includes references that aren't used;
- Break up your resource;
- Consider a volume mount instead;
There's a request for a new API Resource: File (orBinaryData) that could apply to your case. It's very fresh but it's good to keep an eye on.
If you still need help let me know.
来源：https://stackoverflow.com/questions/60468110/kubernetes-object-size-limitations