chore: update staging branch with current changes
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@@ -132,6 +132,10 @@
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- **[workflow-troubleshooting.md](reference/workflow-troubleshooting.md)** - Workflow Troubleshooting
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- **[quick-start.md](guides/quick-start.md)** - Troubleshooting Quick Reference
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### Staging-Probleme
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- **[staging-502-nginx-phpfpm.md](troubleshooting/staging-502-nginx-phpfpm.md)** - Staging 502 Bad Gateway: Nginx kann nicht zu PHP-FPM verbinden
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### Test-Dokumentation
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- **[test-results.md](tests/test-results.md)** - Test Ergebnisse
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@@ -174,7 +178,8 @@
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1. **[quick-start.md](guides/quick-start.md)** - Quick Troubleshooting
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2. **[workflow-troubleshooting.md](reference/workflow-troubleshooting.md)** - Workflow-Probleme
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3. Stack-spezifische READMEs f?r Details
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3. **[staging-502-nginx-phpfpm.md](troubleshooting/staging-502-nginx-phpfpm.md)** - Staging 502 Fehler (Nginx/PHP-FPM)
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4. Stack-spezifische READMEs f?r Details
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---
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169
deployment/docs/troubleshooting/staging-502-nginx-phpfpm.md
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169
deployment/docs/troubleshooting/staging-502-nginx-phpfpm.md
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# Staging 502 Bad Gateway - Nginx PHP-FPM Connection Issue
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## Problem
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Staging-Server zeigt **502 Bad Gateway** Fehler auf `https://staging.michaelschiemer.de/`.
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Nginx-Fehlerlog zeigt:
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```
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connect() failed (111: Connection refused) while connecting to upstream,
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client: 172.21.0.4, server: _, request: "GET / HTTP/1.1",
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upstream: "fastcgi://127.0.0.1:9000"
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```
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## Ursache
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**Root Cause:** Nginx versucht, sich mit PHP-FPM auf `127.0.0.1:9000` (localhost) zu verbinden, aber PHP-FPM l?uft in einem **separaten Docker-Container** (`staging-app`).
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### Technische Details
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1. **Nginx-Konfiguration:** Es gibt zwei Nginx-Konfigurationsdateien:
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- `/etc/nginx/conf.d/default.conf` ? Korrekt: verwendet `upstream php-upstream { server staging-app:9000; }`
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- `/etc/nginx/sites-available/default` ? Falsch: verwendet `upstream php-upstream { server 127.0.0.1:9000; }`
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2. **Nginx Include-Ordnung:** `nginx.conf` inkludiert:
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```nginx
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include /etc/nginx/sites-enabled/*; # Wird ZULETZT geladen
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include /etc/nginx/conf.d/*.conf; # Wird ZUERST geladen
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```
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Da `sites-enabled/default` **nach** `conf.d/default.conf` geladen wird, **?berschreibt** sie die korrekte Konfiguration.
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3. **Container-Architektur:**
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- `staging-nginx` Container: L?uft Nginx
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- `staging-app` Container: L?uft PHP-FPM auf Port 9000
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- Beide Container sind im `staging-internal` Docker-Netzwerk
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## L?sung
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### Sofort-Fix (Manuell)
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```bash
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cd ~/deployment/stacks/staging
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# Fix upstream in sites-available/default
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docker compose exec -T staging-nginx sed -i '/upstream php-upstream {/,/}/s|server 127.0.0.1:9000;|server staging-app:9000;|g' /etc/nginx/sites-available/default
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# Reload nginx
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docker compose restart staging-nginx
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```
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Oder mit Ansible:
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```bash
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ansible-playbook -i deployment/ansible/inventory/production.yml deployment/ansible/playbooks/fix-sites-available-default.yml
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```
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### Permanente L?sung
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Das Entrypoint-Script in `deployment/stacks/staging/docker-compose.yml` (Zeilen 181-192) wurde erweitert, um das Problem **automatisch beim Container-Start** zu beheben:
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```bash
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# Fix nginx upstream configuration - sites-enabled/default overrides conf.d/default.conf
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if [ -f "/etc/nginx/sites-available/default" ]; then
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echo "?? [staging-nginx] Fixing PHP-FPM upstream configuration..."
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# Replace in upstream block
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sed -i '/upstream php-upstream {/,/}/s|server 127.0.0.1:9000;|server staging-app:9000;|g' /etc/nginx/sites-available/default || true
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sed -i '/upstream php-upstream {/,/}/s|server localhost:9000;|server staging-app:9000;|g' /etc/nginx/sites-available/default || true
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# Replace any direct fastcgi_pass references too
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sed -i 's|fastcgi_pass 127.0.0.1:9000;|fastcgi_pass php-upstream;|g' /etc/nginx/sites-available/default || true
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sed -i 's|fastcgi_pass localhost:9000;|fastcgi_pass php-upstream;|g' /etc/nginx/sites-available/default || true
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echo "? [staging-nginx] PHP-FPM upstream fixed"
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fi
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```
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## Diagnose-Schritte
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Wenn das Problem erneut auftritt:
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### 1. Pr?fe Nginx Error Logs
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```bash
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cd ~/deployment/stacks/staging
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docker compose logs --tail=50 staging-nginx | grep -i "502\|error\|upstream"
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```
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Oder direkt im Container:
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```bash
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docker compose exec -T staging-nginx tail -100 /var/log/nginx/error.log
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```
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**Erwartete Fehlermeldung bei diesem Problem:**
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```
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connect() failed (111: Connection refused) while connecting to upstream,
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upstream: "fastcgi://127.0.0.1:9000"
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```
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### 2. Pr?fe PHP-FPM Status
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```bash
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# Container-Status
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docker compose ps staging-app staging-nginx
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# PHP-FPM l?uft?
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docker compose exec -T staging-app netstat -tlnp | grep 9000
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# Oder:
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docker compose exec -T staging-app ss -tlnp | grep 9000
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```
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### 3. Pr?fe Upstream-Konfiguration
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```bash
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# Welche upstream-Definition wird verwendet?
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docker compose exec -T staging-nginx grep -A 3 "upstream php-upstream" /etc/nginx/sites-available/default
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docker compose exec -T staging-nginx grep -A 3 "upstream php-upstream" /etc/nginx/conf.d/default.conf
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# Welche fastcgi_pass Direktiven gibt es?
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docker compose exec -T staging-nginx grep "fastcgi_pass" /etc/nginx/sites-available/default
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docker compose exec -T staging-nginx grep "fastcgi_pass" /etc/nginx/conf.d/default.conf
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```
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**Erwartetes Ergebnis (korrekt):**
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```
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upstream php-upstream {
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server staging-app:9000;
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}
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```
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**Fehlerhaft (zeigt Problem):**
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```
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upstream php-upstream {
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server 127.0.0.1:9000; # ? FALSCH
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}
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```
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### 4. Teste Verbindung von Nginx zu PHP-FPM
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```bash
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# Kann nginx sich mit staging-app:9000 verbinden?
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docker compose exec -T staging-nginx curl -v http://staging-app:9000 2>&1 | head -20
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# Oder teste direkt mit FastCGI (wenn cgi-fcgi installiert ist)
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docker compose exec -T staging-nginx sh -c "echo -e 'REQUEST_METHOD=GET\nSCRIPT_FILENAME=/var/www/html/public/index.php\n' | cgi-fcgi -bind -connect staging-app:9000"
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```
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### 5. Vollst?ndige Diagnose mit Ansible
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```bash
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ansible-playbook -i deployment/ansible/inventory/production.yml \
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deployment/ansible/playbooks/diagnose-staging-502.yml
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```
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## Verwandte Dateien
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- **Docker Compose Config:** `deployment/stacks/staging/docker-compose.yml`
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- **Nginx Config (korrekt):** `deployment/stacks/staging/nginx/conf.d/default.conf`
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- **Nginx Config (problem):** `/etc/nginx/sites-available/default` (im Container)
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- **Diagnose-Playbooks:**
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- `deployment/ansible/playbooks/diagnose-staging-502.yml`
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- `deployment/ansible/playbooks/fix-sites-available-default.yml`
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## Verhindern in Zukunft
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1. **Entrypoint-Script:** Das Entrypoint-Script behebt das Problem automatisch beim Container-Start
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2. **Image-Build:** Idealerweise sollte die `sites-available/default` Datei im Docker-Image bereits korrekt konfiguriert sein
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3. **Alternativ:** Entferne `sites-available/default` komplett und verwende nur `conf.d/default.conf`
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## Siehe auch
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- [Staging Stack README](../../stacks/staging/README.md)
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- [Nginx Configuration](../../stacks/staging/nginx/conf.d/default.conf)
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- [Troubleshooting Overview](../README.md)
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