Why can't PiHole connect with my nginx reverse proxy? I log into https://dns.thearknet.me/admin and it defaults back to HTTP.
All of my other servers can get HTTPS using the Nginx server and certificate. Just not Pi-Hole.
I know it's just a setting issue that most people already know how to resolve. I have tried all the ones I could including changing location to /admin and adding additional flags. Here is my config. I do not know what relevant logs to check.
#DNS server { listen 80; server_name dns.thearknet.me; return 301 https://$host$request_uri; } server { listen 443 ssl; server_name dns.thearknet.me; ssl_certificate /etc/letsencrypt/live/thearknet.me/fullchain.pem; ssl_certificate_key /etc/letsencrypt/live/thearknet.me/privkey.pem; include /etc/letsencrypt/options-ssl-nginx.conf; ssl_dhparam /etc/letsencrypt/dhparams.pem; location / { proxy_pass http://10.0.1.2:80; 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; proxy_set_header X-Forwarded-Host $server_name; add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always; } } Traditional log files don't exist
root@REVERSEPROXY:~# cat /var/log/nginx/access.log cat: /var/log/nginx/access.log: No such file or directory root@REVERSEPROXY:~# cat /var/log/nginx/error.log cat: /var/log/nginx/error.log: No such file or directory I reboot the server each time.
EDIT
I found the logs
cat /etc/nginx/nginx.conf 2025/11/26 14:52:46 [warn] 289#289: could not build optimal proxy_headers_hash, you should increase either proxy_headers_hash_max_size: 512 or proxy_headers_hash_bucket_size: 64; ignoring proxy_headers_hash_bucket_size 2025/11/26 14:53:56 [warn] 228#228: could not build optimal proxy_headers_hash, you should increase either proxy_headers_hash_max_size: 512 or proxy_headers_hash_bucket_size: 64; ignoring proxy_headers_hash_bucket_size 2025/11/26 14:53:56 [warn] 289#289: could not build optimal proxy_headers_hash, you should increase either proxy_headers_hash_max_size: 512 or proxy_headers_hash_bucket_size: 64; ignoring proxy_headers_hash_bucket_size Added 2 lines to /etc/nginx/nginx.conf
proxy_headers_hash_max_size 1024; proxy_headers_hash_bucket_size 128; Rebooted. Nothing changes
PS C:\WINDOWS\System32> Invoke-Webrequest https://dns.thearknet.me Invoke-Webrequest : The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. At line:1 char:1 + Invoke-Webrequest https://dns.thearknet.me + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebException + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand nginx -v nginx version: openresty/1.27.1.2 
nginx -Vcommand? The question as a whole is off-topic on Server Fault (you might have better luck on Super User).nginx -Vcommand output, not thenginx -v. I asked this to help you find the location of the nginx logs; it's not relevant anymore anyway since you've already found them (most likely in the/usr/local/openresty/nginx/logsdirectory since you are using OpenResty bundle rather than vanilla nginx). The PowerShellcurlisn'tcurlat all; the output you've shown isn't of much help.