nginx and php-fpm configuration errors

Moving an nginx install from Ubuntu 14.04 to 18.04 and upgrading to more recent versions of nginx, php, php-fpm, I ran into this error in my nginx config:

2020/02/28 04:45:47 [crit] 11784#11784: *1 connect() to unix:/var/run/php7.2-fpm.sock failed (2: No such file or directory) while connecting to upstream, client: 192.168.x.x, server: , request: "GET /index.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php7.2-fpm.sock:", host: "10.x.x.x"

The “No such file or directory” error is talking about the nginx connection to the php7.2-fpm.sock, rather than the file the GET request is for.

On closer look at where the .sock file is located, this was a subtle error to find and fix, but the fix was simple as I was pointing to the wrong path.

In my nginx default config, I had this line (migrating from a config for an older nginx and pphp-fpm version, this is where it was before):

fastcgi_pass unix:/var/run/php7.2-fpm.sock;

… I was missing a /php/ dir in the path, so changing to the correct path was the fix:

fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;

nginx ssl cert error:

When you concatenated your SSL .crt intermediate and root certs together, it’s likely you ended up with lines line this:


To fix this, manually edit to insert a newline between the end and begin like this, and you should be all set:


apt-get errors building Ubuntu based Docker images from old images

Turns out if you have an older base image downloaded locally and you try to rebuild your own image based on it a couple of years later, you could get errors running apt-get in your own Dockerfiles. I just got errors like this rebuilding an image that I first created 2 years ago:

Err trusty-updates/main libcurl3 amd64 7.35.0-1ubuntu2.14
404  Not Found [IP: 80]
Get:16 trusty-updates/main ca-certificates all 20170717~14.04.1 [167 kB]
Err trusty-updates/main krb5-locales all 1.12+dfsg-2ubuntu5.3
404  Not Found [IP: 80]
Get:17 trusty/main libsasl2-modules amd64 2.1.25.dfsg1-17build1 [64.3 kB]
Err trusty-security/main libcurl3 amd64 7.35.0-1ubuntu2.14
  404  Not Found [IP: 80]
Err trusty-security/main openssl amd64 1.0.1f-1ubuntu2.23
  404  Not Found [IP: 80]
Err trusty-security/main curl amd64 7.35.0-1ubuntu2.14
  404  Not Found [IP: 80]
Fetched 1375 kB in 7s (175 kB/s)
E: Failed to fetch  404  Not Found [IP: 80]

If you delete the base ubuntu image you have cached locally, and try again, you’ll pull down a latest image, and now your build should continue as expected.