Nginx – could not build optimal variables_hash

configurationnginxwarning

For quite some time now nginx gives me this warning:

nginx: [warn] could not build optimal variables_hash, you should increase either variables_hash_max_size: 1024 or variables_hash_bucket_size: 64; ignoring variables_hash_bucket_size

However in the http block of my config I have this:

http {
  # More config...

  variables_hash_max_size 1024;
  variables_hash_bucket_size 64;

  # More config...
}

(Increasing to higher values doesn't solve it either! Also I ran nginx -T and checked if these keys were set to a different value, which they were not!)
How do I solve this?

(If required I will post more of the config. I'm just not sure which parts are relevant.)

Best Answer

You mentioned...

and checked if these keys were set to a different value, which they were not!

Was that just spot-checking that declarative, or did you grep the config files? I would do the latter to ensure it isn't declared somewhere else as well.

Paste the results of nginx -V.

Do you have any extra modules enabled? How high a value did you try? It's possible that you either have modules adding to the variable weight or you have a lot (or lengthy values) declared.

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