AWS python Flask EB .ebextensions .conf file is not working

Question

.conf file

files:
  "/etc/nginx/conf.d/01_proxy.conf":
    mode: "000644"
    owner: root
    group: root
    content: |
      client_max_body_size 200M;

container_commands:                         
  01_reload_nginx:                           
    command: "sudo nginx -s reload"

I have put this file in all possible folders:

.ebextensions
|-- 01_nginx.conf
|
|--nginx
   |--01_nginx.conf
   |--conf.d
      |--01_nginx.conf

when I check the log, the first message is

2020/07/31 18:23:59.603405 [INFO] Finished executing the config set Infra-EmbeddedPostBuild.

then

2020/07/31 18:23:59.603427 [INFO] Executing instruction: CleanEbExtensions

In theory when.ebextensions is cleant the custom commands should already have been executed, but they are not (when I connect via ssh to the server no file has been created as well as if I try to upload files, the server responds with a 413).

I have also tried modifying the nginx.conf file in /etc/nginx/ but it is reset everytime I update the code. All the /etc/nginx/ directory seems to be reset because I have also tried to put a "000_custom.conf" file in "/etc/nginx/conf.d/", but with no results.

Edit: I'd like to point out that if I modify nginx.conf in "/etc/nginx/" on the server and I do a "sudo nginx -s reload" it works till the next code build.

Answer 1

The likely reason why your nginx config does not work is that you are using current version of EB which is based on Amazon Linux 2 (AL2). However, your nginx config files are for AL1, which is old.

For AL2, nginx settings should be in .platform , not in .ebextentions as shown in the docs .

Therefore, you could try creating file .platform/nginx/conf.d/mynginx.conf with the content of:

client_max_body_size 200M;