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Assessment of Nginx Configuration:

This Nginx configuration is largely correct and robust for Odoo's longpolling and WebSockets. Here are the key points:

• Separate Upstreams (odoo17, odoo17chat): This is a clean way to define the main Odoo application and its longpolling backend.
• Correct Ports: 1700 for main Odoo and 8072 for chat are correctly passed to the upstreams.
• Essential Headers: X-Forwarded-Host, X-Forwarded-For, X-Forwarded-Proto, X-Real-IP are set for Odoo's Proxy Mode.
  • Note on X-Real-IP: If using Cloudflare, X-Real-IP $remote_addr; might pass Cloudflare's IP. For the actual client IP, it's often better to use proxy_set_header X-Real-IP $http_cf_connecting_ip; if Cloudflare is sending that header, or use Nginx's real_ip module. However, the provided config is standard without Cloudflare specifics.
• WebSocket Headers (Upgrade, Connection): These are correctly included in the location /longpolling block.
• proxy_http_version 1.1;: This is CRUCIAL for Nginx when proxying WebSockets, ensuring the HTTP/1.1 protocol upgrade works correctly. This is a common fix for real-time issues.
• Timeouts: proxy_read_timeout, proxy_connect_timeout, proxy_send_timeout are set to 720s (12 minutes), which is generous and helps prevent premature disconnections for long-lived WebSocket connections.

Potential Minor Improvement for location /longpolling: The X-Forwarded-For and Host headers are already set in the main server block. While repeating them in location /longpolling is harmless, they are generally inherited. The Upgrade and Connection headers are the unique ones for this block.

"Do I need to adjust any Odoo settings for WebSockets to work properly?"

Yes, Odoo's odoo.conf needs to be correctly configured to work with this Nginx setup.

Assessment of Odoo odoo.conf settings:

• http_port = 1700: This matches the odoo17 upstream in Nginx. Correct.
• longpolling_port = 8072: This matches the odoo17chat upstream in Nginx. Correct.
• proxy_mode = True: This is CRUCIAL for Odoo to correctly interpret the X-Forwarded-* headers from Nginx.
• workers = 2: This enables multi-worker mode, which is good for production.
• dbfilter = ^%h$: Correct for hostname-based multi-database setups.

Missing/Recommended Odoo Settings from your own troubleshooting journey (especially for Odoo 18):

Based on your recent successful troubleshooting, the following settings in odoo.conf are highly recommended for Odoo 18 stability and real-time performance:

• Resource Limits:
  • limit_memory_hard = 2415919104 (e.g., ~2.25 GB per worker)
  • limit_memory_soft = 2013265920 (e.g., ~1.87 GB per worker)
  • limit_request = 8192
  • limit_time_cpu = 360
  • limit_time_real = 3600
  • limit_time_real_cron = 120 (Crucial for preventing cron timeouts)
• WebSocket/Longpolling Specifics:
  • websocket_keep_alive_timeout = 600 (Helps maintain long-lived connections)
  • websocket_rate_limit_burst = 10
  • websocket_rate_limit_delay = 0.2
• Session Storage (to prevent FileNotFoundError):
  • session_store = db (You already have this)
  • session_dir = False (Crucial to add, prevents Odoo from trying to write session files to disk when using session_store = db)
• XML-RPC Configuration (for external integrations):
  • xmlrpc = True
  • xmlrpc_interface = 0.0.0.0
  • xmlrpc_port = 8069
  • xmlrpcs = True
  • xmlrpcs_interface = 0.0.0.0
  • xmlrpcs_port = 8071

                        ✅
                        
        
 This worked for me!
                        
                    
[options]
admin_passwd = ############
addons_path = /mnt/extra-addons,/usr/lib/python3/dist-packaes/odoo/addons
session_store = db
session_dir = False
limit_memory_hard = 2415919104
limit_memory_soft = 2013265920
limit_request = 8192
limit_time_cpu = 360
limit_real_time = 3600
limit_time_real_cron = 120
longpolling_port=8072
;logfile = /var/log/odoo/odoo-server.log
;logrotate = True
;log_level = debug
http_port =
;http_timeout = 1800
max_cron_threads = 2
workers = 5
websocket_keep_alive_timeout = 600
websocket_rate_limit_burst = 10
websocket_rate_limit_delay = 0.2
xmlrpc = True
xmlrpc_interface =
xmlrpc_port = 8069
xmlrpcs = True
xmlrpcs_interface =
xmlrpcs_port = 8071
proxy_mode = True
dbfilter = ^%h$

Conclusion:

The Nginx configuration is well-structured for longpolling. The Odoo odoo.conf is also good, but adding the specific limit_ and websocket_ parameters (especially session_dir = False and limit_time_real_cron) from your recent Odoo 18 troubleshooting will significantly improve stability and ensure real-time chat functions reliably.