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[GH-ISSUE #3345] Faulty proxy_host config file causes boot loop with "double read ssl 443" #2250
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starred/nginx-proxy-manager-NginxProxyManager#2250
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Originally created by @Haui1112 on GitHub (Nov 23, 2023).
Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/3345
Checklist
jc21/nginx-proxy-manager:latestdocker image?Describe the bug
An error in one proxy host file in the advanced section causes the whole app to boot loop:
listen 443 ssl http2;
listen [::]:443 ssl http2;
even commenting them out gets reversed on reboot for some reason. I had to fully remove the lines to keep that from happening.
Nginx Proxy Manager Version
2.10.4
To Reproduce
Steps to reproduce the behavior:
Expected behavior
npm should just ignore the doubled line or at least kill the one host instead of downing the whole system behind it.
Screenshots
Operating System
Ubuntu 22.04.3 -> Docker Compose
Additional context
Fallback_error.log
2023/11/22 20:15:13 [error] 10849#10849: 92907 open() "/var/www/html/robots.txt" failed (2: No such file or directory), client: .222.253.12, server: localhost-nginx-proxy-manager, request: "GET /robots.txt HTTP/1.1", host: ""
2023/11/22 22:46:11 [warn] 11251#11251: 512 worker_connections are not enough, reusing connections
2023/11/22 22:46:11 [alert] 11251#11251: 122878 512 worker_connections are not enough while connecting to upstream, client: 127.0.0.1, server: localhost-nginx-proxy-manager, request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:80/favicon.ico", host: ""
2023/11/22 22:53:25 [error] 11251#11251: 123929 open() "/var/www/html/.env" failed (2: No such file or directory), client: .236.231.176, server: localhost-nginx-proxy-manager, request: "GET /.env HTTP/1.1", host: ""
2023/11/22 23:27:08 [error] 11392#11392: 128790 open() "/var/www/html/.env" failed (2: No such file or directory), client: .16.38.88, server: localhost-nginx-proxy-manager, request: "GET /.env HTTP/1.1", host: ""
2023/11/22 23:39:22 [warn] 11392#11392: 512 worker_connections are not enough, reusing connections
2023/11/22 23:39:22 [alert] 11392#11392: 512 worker_connections are not enough
2023/11/22 23:39:22 [error] 11393#11393: 131593 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 127.0.0.1, server: localhost-nginx-proxy-manager, request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:80/favicon.ico", host: ""
2023/11/23 01:06:19 [error] 11607#11607: 145973 open() "/var/www/html/robots.txt" failed (2: No such file or directory), client: 35.217.99.157, server: localhost-nginx-proxy-manager, request: "GET /robots.txt HTTP/1.1", host: "federation.matrix..com"
2023/11/23 01:41:35 [error] 11699#11699: 150478 "/var/www/html/HNAP1/index.html" is not found (2: No such file or directory), client: 94.228.162.87, server: localhost-nginx-proxy-manager, request: "POST /HNAP1/ HTTP/1.1", host: "*:80"
2023/11/23 02:00:01 [alert] 10157#10157: *1688 open socket #49 left in connection 22
2023/11/23 02:00:01 [alert] 10157#10157: *1686 open socket #44 left in connection 47
2023/11/23 02:00:01 [alert] 10157#10157: aborting
2023/11/23 02:00:04 [alert] 10111#10111: worker process 10157 exited on signal 9
@Geczy commented on GitHub (Jan 6, 2024):
https://github.com/NginxProxyManager/nginx-proxy-manager/issues/2388#issuecomment-1807353881 https://github.com/NginxProxyManager/nginx-proxy-manager/issues/1912
@redtripleAAA commented on GitHub (Feb 29, 2024):
Getting the same issue here
2024/02/29 05:27:44 [alert] 255#255: *3618 512 worker_connections are not enough while connecting to upstream, client: 127.0.0.1, server: localhost-nginx-proxy-manager, request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:80/favicon.ico", host: "domain", referrer: "http://domain/"@github-actions[bot] commented on GitHub (Sep 8, 2024):
Issue is now considered stale. If you want to keep it open, please comment 👍
@github-actions[bot] commented on GitHub (Sep 10, 2025):
Issue was closed due to inactivity.