Issue with worker_connections limits in Nginx+
Hello Nginx Community, We are using Nginx+ for our Load Balancer and have encountered a problem where the current worker_connections limit is insufficient. I need our monitoring system to check the current value of worker_connections for each Nginx worker process to ensure that the active worker_connections are below the maximum allowed. The main issue is that I cannot determine the current number of connections for each Nginx worker process. In my test configuration, I set worker_connections to 28 (which is a small value used only for easily reproducing the issue). With 32 worker processes, the total capacity should be 32 * 28 = 896 connections. Using the /api/9/connections endpoint, we can see the total number of active connections: { "accepted": 2062055, "dropped": 4568, "active": 9, "idle": 28 } Despite the relatively low number of active connections, the log file continually reports that worker_connections are insufficient. Additionally, as of Nginx+ R30, there is an endpoint providing per-worker connection statistics (accepted, dropped, active, and idle connections, total and current requests). However, the reported values for active connections are much lower than 28: $ curl -s http://<some_ip>/api/9/workers | jq | grep active "active": 2, "active": 0, "active": 1, "active": 2, "active": 1, "active": 1, "active": 0, "active": 0, "active": 3, "active": 0, "active": 0, "active": 0, "active": 2, "active": 2, "active": 0, "active": 1, "active": 0, "active": 0, "active": 0, "active": 0, "active": 0, "active": 0, "active": 0, "active": 2, "active": 1, "active": 2, "active": 1, "active": 0, "active": 1, "active": 0, "active": 0, "active": 1, Could you please help us understand why the active connections are reported as lower than the limit, yet we receive logs indicating that worker_connections are not enough? Thank you for your assistance.
Nginx Reverse Proxy issue for port other than 81
I have a backend tomcat application which runs on port 8080 with IP 192.168.29.141. I am trying to reverse proxy using Nginx for which I have created the below configuration file: upstream tomcat{ server 192.168.29.141:8080; } server { #listen 192.168.122.28:80; listen 192.168.122.28:81; server_name tomcat; location / { proxy_pass http://tomcat; } } When I load the page on browser, the page is distorted and I get below error in Browser console: "Unsafe attempt to load URL http://tomcat/o/classic-theme/images/clay/icons.svg from frame with URL http://tomcat:81/. Domains, protocols and ports must match." But when I run the nginx on port 80 instead of port 81, everything works fine. Is there anything I am missing in configurations for port other than 80 ? My Nginx Server IP: 192.168.122.28 Browser screenshot when hit the URL as http://tomcat:81
Convert Nginx rule to F5 irule
Hi Team, I need some help in converting the below NGINX Rule to F5 iRule. 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 $scheme; # WebSocket specific proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection "upgrade";
Config NGINX to F5
Hi everyone, I have VS. NGINX require script to implement at F5 profile but i dont know where I must config at F5 configuration. Here the NGINX requirement : client_max_body_size 5000M; client_body_buffer_size 5000M; client_body_timeout 4024; client_header_timeout 3024; Where I must config that NGINX requirement to the VS in F5 ??? Using profile or irules ?? How to set up ? Thanks
Nginx is only redirecting to port 8080
I have a .net 8 solution multiple APIs and I'm using docker and Nginx to host the application. please find below the full details: Dockerfile FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base WORKDIR /app EXPOSE 8080 FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build ARG BUILD_CONFIGURATION=Release ... FROM build AS publish ARG BUILD_CONFIGURATION=Release RUN dotnet publish "xxx.Api/xxx.Api.csproj" -c Release -o /app/publish /p:UseAppHost=false FROM base AS final WORKDIR /app COPY --from=publish /app/publish . ENTRYPOINT ["dotnet", "xxx.Api.dll"] launchsettings.json "Docker": { "commandName": "Docker", "launchBrowser": true, "launchUrl": "{Scheme}://{ServiceHost}:{ServicePort}/swagger", "publishAllPorts": true, "useSSL": true, "sslPort": 4430, "httpPort": 8080 } nginx.conf worker_processes auto; events { worker_connections 1024; } http{ server { listen 80; server_name domain; port_in_redirect off; location /api1 { rewrite /api1(.*) $1 break; proxy_pass http://api1:8080; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection 'upgrade'; proxy_set_header Host $host; proxy_cache_bypass $http_upgrade; } location /api2 { rewrite /api2(.*) $1 break; proxy_pass http://api2:8081; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection 'upgrade'; proxy_set_header Host $host; proxy_cache_bypass $http_upgrade; } } docker-compose version: '3.4' services: nginx: image: nginx ports: - 80:80 volumes: - ./nginx.conf:/etc/nginx/nginx.conf:ro depends_on: - api1 - api2 api1: image: ${DOCKER_REGISTRY-}api1:latest container_name: api1 build: context: . dockerfile: api1.Api/Dockerfile ports: - "8080:8080" api2: image: ${DOCKER_REGISTRY-}api2:latest container_name: api2 build: context: . dockerfile: api2.API/Dockerfile ports: - "8081:8081" API1 that uses port 8080 loads normally but API2 that uses 8081 get error 502 gateway error. If I switch the port on those same projects than API2 loads normally and API1 stops loading. I've been trying all kinds of stuff over last 2 days and nothing seems to work. Those same projects with the same configuration were working perfectly when I was using .net 6 with the same nginx version, but when I upgraded the project to .net 8 it broke. I need your help and suggestions. Anything will be helpfull.
Amplify fpm connections metric is misleading or incorrect
Hi, I have nginx and php-fpm monitoring in amplify. Recently I created a dashboard to analyze incoming requests, fpm connections and their correlation. I realized that "fpm.conn.accepted" chart without specifying pool (meaning all pools) displays bigger and sometimes 10x bigger numbers in comparison to if display the chart by specifying all pools to show each value separately and sum of them. I'd expect the sum of all pools to be equal to the first chart but it is not. Screenshot:https://prnt.sc/I_lWhkSDye3I As you can see the blue lines are far from being equal or close to each other.does nginx (1.20 or newer) re-resolve DNS for proxy_pass?
Consider this nginx config snippet: location ^~ /_example/ { proxy_pass https://example.com/_example/; proxy_set_header Host my-site; } Assuming "example.com" DNS TTL is set to 60 seconds - will nginx re-resolve DNS after 60 seconds? Or does it only resolve the name on startup? I'm finding different info around the internet: - it will re-resolve only in the commercial nginx plus - it will re-resolve only in newer nginx releases; in older ones, one need to make some workarounds - it will only resolve once on startup and never againHow to rewrite a path to a backend service dropping the prefix and passing the remaining path?
Hello, I am not sure whether my posting is appropriate in this area, so please delete it if there is a violation of posting rules... This must be a common task, but I cannot figure out how to do the following fanout rewrite in our nginx ingress: http://abcccc.com/httpbin/anything-> /anything (the httpbin backend service) When I create the following ingress with a path of '/' and send the query, I receive a proper response. curl -I -k http://abczzz.com/anything apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: mikie-ingress namespace: mikie spec: ingressClassName: nginx rules: - host: abczzz.com http: paths: - path: / pathType: Prefix backend: service: name: httpbin-service port: number: 8999 What I really need is to be able to redirect to different services off of this single host, so I changed the ingress to the following, but the query always fails with a 404. Basically, I want the /httpbin to disappear and pass the path onto the backend service, httpbin. curl -I -k http://abczzz.com/httpbin/anything apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: mikie-ingress namespace: mikie annotations: nginx.ingress.kubernetes.io/rewrite-target: /$2 spec: ingressClassName: nginx rules: - host: abczzz.com http: paths: - path: /httpbin(/|$)(.*) pathType: Prefix backend: service: name: httpbin-service port: number: 8999 Thank you for your time and interest, Mike
