Instalação VPS na Hostinger com Stack LEMP Ubuntu 24.04 LTS e CloudPanel

Installation
1

Eu tenho 3 sites em Drupal 7 que usam PHP Generic e Varnish. O stack LEMP usa NGINX.
Quero instalar o Discourse como fórum para um de meus sites.
Instalei o docker, o discourse, configurei o subdomínio e o /etc/nginx/sites-enabled/forum.linguagemclipper.com.br.conf
Criei os certificados.
Após a instalação tenho: The provided host name is not valid for this server.
Deu vários erros referente ao uso de mesma porta.
Creio que preciso consertar o meu .conf e o meu app.yml, já fiz vários testes com ajuda do chatgpt, já rodei o ./discourse-doctor
Não sei mais o que fazer…
Meu .conf:

server {
    listen 80;
    listen [::]:80;
    server_name forum.linguagemclipper.com.br;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;
    listen [::]:443 ssl;
    http2 on;
    http3 off;
    server_name forum.linguagemclipper.com.br;

    ssl_certificate     /etc/letsencrypt/live/forum.linguagemclipper.com.br/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/forum.linguagemclipper.com.br/privkey.pem;

    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;

    location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto https;
    }
}

E meu app;yml:

templates:
  - "templates/postgres.template.yml"
  - "templates/redis.template.yml"
  - "templates/web.template.yml"
  ## Uncomment the next line to enable the IPv6 listener
  #- "templates/web.ipv6.template.yml"
  - "templates/web.ratelimited.template.yml"
  ## Uncomment these two lines if you wish to add Lets Encrypt (https)
#  - "templates/web.ssl.template.yml"
#  - "templates/web.letsencrypt.ssl.template.yml"

## which TCP/IP ports should this container expose?
## If you want Discourse to share a port with another webserver like Apache or nginx,
## see https://meta.discourse.org/t/17247 for details
expose:
- "8080:80"   # http interno do Discourse mapeado para porta 8080
#  - "3000:80"   # http
#  - "4433:443"  # https

params:
  db_default_text_search_config: "pg_catalog.english"

  ## Set db_shared_buffers to a max of 25% of the total memory.
  ## will be set automatically by bootstrap based on detected RAM, or you can override
  db_shared_buffers: "2048MB"

  ## can improve sorting performance, but adds memory usage per-connection
  db_work_mem: "40MB"

  ## Which Git revision should this container use? (default: tests-passed)
  #version: tests-passed

env:
  LC_ALL: en_US.UTF-8
  LANG: en_US.UTF-8
  LANGUAGE: en_US.UTF-8
  DISCOURSE_DEFAULT_LOCALE: pt_BR

  # O HTTPS está forçado, mesmo sem usar SSL interno
  DISCOURSE_FORCE_HTTPS: true

  ## How many concurrent web requests are supported? Depends on memory and CPU cores.
  ## will be set automatically by bootstrap based on detected CPUs, or you can override
  UNICORN_WORKERS: 4

Alguns erros:

+ /usr/bin/docker run --shm-size=512m -d --restart=always -e LANG=en_US.UTF-8 -e RAILS_ENV=production -e UNICORN_WORKERS=4 -e UNICORN_SIDEKIQS=1 -e RUBY_GC_HEAP_GROWTH_MAX_SLOTS=40000 -e RUBY_GC_HEAP_INIT_SLOTS=400000 -e RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR=1.5 -e DISCOURSE_DB_SOCKET=/var/run/postgresql -e DISCOURSE_DB_HOST= -e DISCOURSE_DB_PORT= -e LC_ALL=en_US.UTF-8 -e LANGUAGE=en_US.UTF-8 -e DISCOURSE_DEFAULT_LOCALE=pt_BR -e DISCOURSE_FORCE_HTTPS=true -e DISCOURSE_HOSTNAME=forum.linguagemclipper.com.br -e DISCOURSE_DEVELOPER_EMAILS=anderson@linguagemclipper.com.br -e DISCOURSE_SMTP_ADDRESS=smtppro.zoho.com -e DISCOURSE_SMTP_PORT=587 -e DISCOURSE_SMTP_USER_NAME=anderson@linguagemclipper.com.br -e 'DISCOURSE_SMTP_PASSWORD=Clavis75!' -e DISCOURSE_SMTP_ENABLE_START_TLS=true -e LETSENCRYPT_ACCOUNT_EMAIL=anderson@linguagemclipper.com.br -h srv801054-app -e DOCKER_HOST_IP=172.17.0.1 --name app -t -p 8080:80 -v /var/discourse/shared/standalone:/shared -v /var/discourse/shared/standalone/log/var-log:/var/log --mac-address 02:cd:20:6d:ed:a7 local_discourse/app /sbin/boot
f221ba6dc911301795806390816be38e78c26b71d94773c814f057817b88a776
docker: Error response from daemon: driver failed programming external connectivity on endpoint app (a5dc4c7ba846ccf556189495ce62e040cea87a62cf47e44fef76b4364fcb9e4a): Error starting userland proxy: listen tcp4 0.0.0.0:8080: bind: address already in use.

root@srv801054:/var/discourse# docker ps -a
CONTAINER ID   IMAGE                              COMMAND                  CREATED          STATUS                    PORTS     NAMES
18cc215795b4   local_discourse/app                "/sbin/boot"             22 minutes ago   Created                             app
7cc7772ec84d   discourse/base:2.0.20250226-0128   "/bin/bash -c '/usr/…"   22 hours ago     Exited (0) 22 hours ago             frosty_mendeleev
fb3ce2afb5a7   discourse/base:2.0.20250226-0128   "/bin/bash -c '/usr/…"   22 hours ago     Exited (0) 22 hours ago             determined_greider

root@srv801054:/var/discourse# sudo ss -ltnp | grep :8080
LISTEN 0      511          0.0.0.0:8080       0.0.0.0:*    users:(("nginx",pid=885962,fd=26),("nginx",pid=885961,fd=26),("nginx",pid=674485,fd=26))
LISTEN 0      511             [::]:8080          [::]:*    users:(("nginx",pid=885962,fd=27),("nginx",pid=885961,fd=27),("nginx",pid=674485,fd=27))
root@srv801054:/var/discourse# sudo lsof -i :8080
COMMAND      PID   USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
cache-mai 400747 vcache   26u  IPv4 4374453      0t0  TCP localhost:45054->localhost:http-alt (ESTABLISHED)
nginx     674485   root   26u  IPv4 3106797      0t0  TCP *:http-alt (LISTEN)
nginx     674485   root   27u  IPv6 3106798      0t0  TCP *:http-alt (LISTEN)
nginx     885961   root   26u  IPv4 3106797      0t0  TCP *:http-alt (LISTEN)
nginx     885961   root   27u  IPv6 3106798      0t0  TCP *:http-alt (LISTEN)
nginx     885961   root   44u  IPv4 4374454      0t0  TCP localhost:http-alt->localhost:45054 (ESTABLISHED)
nginx     885962   root   26u  IPv4 3106797      0t0  TCP *:http-alt (LISTEN)
nginx     885962   root   27u  IPv6 3106798      0t0  TCP *:http-alt (LISTEN)
root@srv801054:/var/discourse#
3

Looks like something else is using that port. Try another port? After you change the port in the app.yml, you can

./launcher destroy app;./launcher start app

instead of doing a whole rebuild.

4

DISCOURSE INSTALADO, MAS NÃO ENVIA EMAILS

Mudei a porta do discourse no app.yml para 8888 e no vhost do Cloudpanel também, depois parei o NGINX para recompilar o discourse e deu certo.
Reativei o NGINX e tanto os sites quanto o discourse continuaram no ar.
O problema é que o discourse não está enviando emails nem a pau, precisamos do email de ativação de conta.
Já mudei as portas e não adiantou.
No mesmo servidor eu instalei o Mailcow dentro de um docker e está funcionando normalmente, tanto envio como recebo emails.

5

Looks like you’re doing some creative, cool stuff on your server! Note that we only are able to provide support here if you use the official install instructions. Please take a look and try again following the instructions, which also provides troubleshooting steps.

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