1361440 - (bmo-cloud-migration) BMO Cloud Ops Migration

Status: RESOLVED FIXED

(bugzilla.mozilla.org :: General, enhancement)

Description

[Dylan Hardison [:dylan] (he/him)]

I'd like to split the tasks that relate to *allowing* BMO to run in cloud services from the work of actually running it in cloud services. This nicely decouples work that I (or the B-Team Irregulars) can do from the work that needs work on the cloud-services side.

So this tracking bug is to keep track of those tasks, starting with the containerization bug 1361439

Comment 1

[Dylan Hardison [:dylan] (he/him)]

This isn't a bug per se, but please make sure the nginx in front of our webheads allows HTTP header fields to be at least 8k.
nginx defaults to 4k, and apache to 8k, and ... we hit that number under normal conditions.

The limit for *all* the headers together is larger than that number too, c.f. apache 2.2 docs.

Comment 2

[Bob Micheletto [:bobm]]

(In reply to Dylan Hardison [:dylan] (he/him) from comment #1)

> The limit for *all* the headers together is larger than that number too,
> c.f. apache 2.2 docs.

Sounds like we will need to tweak both the large_client_header_buffers and client_max_body_size settings.  What's the largest reasonable body size we should support from clients?  Default is 1MB.  Are you aware of any production stats we can use to tune these parameters?  

The documentation for those settings live here:
http://nginx.org/en/docs/http/ngx_http_core_module.html#large_client_header_buffers
http://nginx.org/en/docs/http/ngx_http_core_module.html#client_max_body_size

Comment 3

[Bob Micheletto [:bobm]]

(In reply to Bob Micheletto [:bobm] from comment #2)
> (In reply to Dylan Hardison [:dylan] (he/him) from comment #1)
 
> The documentation for those settings live here:
> http://nginx.org/en/docs/http/ngx_http_core_module.
> html#large_client_header_buffers
> http://nginx.org/en/docs/http/ngx_http_core_module.html#client_max_body_size

Looks like the default is 8k.  What should we use for a client_max_body_size?

Comment 4

[Dylan Hardison [:dylan] (he/him)]

client body should be 10240 * 1024 bytes. That value is from data/params (or /editparams.cgi)
and is directly related to the mysql max packet size.

In other words, if nginx client body is smaller, Bugzilla maxattachmentsize and mysql max_packet_size should all agree.

Comment 5

[Mark Côté [:mcote]]

Follow up work depends on this bug, not the other way around.

Comment 6

[Mark Côté [:mcote]]

The migration completed on 2018/03/24.