How to disable cache?

[agostop]

So many error log like "1235 mkdir() "/var/cache/nginx/proxy_temp/9/58" failed (28: No space left on device) while reading upstream",
I must remove the container that can reslove it.

Are there have some environment variables to control this?

[buchdag]

Hi.

Could you please provide a bit more context on this issue ?

• what version of nginx-proxy are you using ?
• what is your nginx-proxy setup ? Could you provide a docker compose file ?
• "I must remove the container that can reslove it." : which container are you talking about ?
• "are there have some environment variables to control this?" : to control what ? 🤔

[agostop]

@buchdag
thank you for reply.

what version of nginx-proxy are you using ?
I'm using the latest version of nginx-proxy.

what is your nginx-proxy setup ? Could you provide a docker compose file ?
I use nginx-proxy with acme-companion, I really like this combination, the compose file like blow:

services:
  nginx-proxy:
    image: nginxproxy/nginx-proxy
    container_name: nginx-proxy
    ports:
      - "20443:443"
    volumes:
      # The vhost and conf volumes are only required
      # if you plan to obtain standalone certificates
      - ./vhost:/etc/nginx/vhost.d
      # - conf:/etc/nginx/conf.d
      - ./html:/usr/share/nginx/html
      - ./certs:/etc/nginx/certs:ro
      - /var/run/docker.sock:/tmp/docker.sock:ro
    networks:
      - docker_internal

  acme-companion:
    image: nginxproxy/acme-companion
    container_name: nginx-proxy-acme
    environment:
      DEFAULT_EMAIL: someone@email.com
      ACME_CHALLENGE: DNS-01
      ACMESH_DNS_API_CONFIG: |-
          DNS_API: dns_cf
          CF_Token: xxx
          CF_Zone_ID: xxx
          CF_Account_ID: xxx
    volumes_from:
      - nginx-proxy
    volumes:
      - ./certs:/etc/nginx/certs:rw
      - ./acme:/etc/acme.sh
      - /var/run/docker.sock:/var/run/docker.sock:ro
    networks:
      - docker_internal

"I must remove the container that can reslove it." : which container are you talking about ?
I often use this to provide file download service, after a while, my server's disk will be full. After my investigation, it was caused by the nginx-proxy container, I found the volumn of nginx-proxy using 80% disk space, so I used 'docker-compose stop nginx-proxy && docker-compose rm nginx-proxy && docker-compose up -d', then disk usage has returned to normal.

"are there have some environment variables to control this?" : to control what ?
I mean, is there an environment variable that can control this disk cache function?

[buchdag]

Looks like the culprit in your case is proxy_buffering.

It was enabled by default a while back because nginx strongly discourage disabling it for most use cases.

There is no builtin environment variable to enable or disable proxy buffering but you can easily do this at the proxy of virtual host level with custom configurations.

Just mount a file ending in .conf inside /etc/nginx/conf.d, containing the following:

proxy_buffering off;

and proxy buffering will be disabled at the proxy level.

[agostop]

okay, emmm, have you considered implementing this functionality using built-in environment variable?

Looks like the culprit in your case is proxy_buffering.

It was enabled by default a while back because nginx strongly discourage disabling it for most use cases.

There is no builtin environment variable to enable or disable proxy buffering but you can easily do this at the proxy of virtual host level with custom configurations.

Just mount a file ending in .conf inside /etc/nginx/conf.d, containing the following:

proxy_buffering off;
and proxy buffering will be disabled at the proxy level.

[buchdag]

As there is already a way to do it, no that's not planned.