package nginx-light 1.6.2-5ubuntu3.1 failed to install/upgrade - postinstallation script failed due to bad configuration directive in left over configuration files from prior installation tasks

[Bernhard Nikola]

only tried to install ...

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: nginx-light 1.6.2-5ubuntu3.1
ProcVersionSignature: Ubuntu 3.19.0-25.26-generic 3.19.8-ckt2
Uname: Linux 3.19.0-25-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
Date: Wed Jul 29 00:32:29 2015
DuplicateSignature: package:nginx-light:1.6.2-5ubuntu3.1:Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
ErrorMessage: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
InstallationDate: Installed on 2015-07-19 (10 days ago)
InstallationMedia: Lubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.7ubuntu4.1
SourcePackage: nginx
Title: package nginx-light 1.6.2-5ubuntu3.1 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
UpgradeStatus: No upgrade log present (probably fresh install)

[Thomas Ward (teward)]

Your apt history shows the following:

Start-Date: 2015-07-19 20:43:33
Commandline: /usr/sbin/synaptic
Install: ... nginx- core:amd64 (1.6.2-5ubuntu3, automatic), ... nginx-common:amd64 (1.6.2-5ubuntu3, automatic), nginx:amd64 (1.6.2-5ubuntu3), ...
Upgrade: tzdata:amd64 (2015c-1, 2015d-0ubuntu0.15.04)
End-Date: 2015-07-19 20:45:30

...

Start-Date: 2015-07-29 00:29:54
Commandline: /usr/sbin/synaptic
Remove: nginx-core:amd64 (1.6.2-5ubuntu3.1), nginx-common:amd64 (1.6.2-5ubuntu3.1), nginx:amd64 (1.6.2-5ubuntu3.1)
End-Date: 2015-07-29 00:29:58

Start-Date: 2015-07-29 00:32:21
Commandline: /usr/sbin/synaptic
Install: nginx-common:amd64 (1.6.2-5ubuntu3.1, automatic), nginx:amd64 (1.6.2-5ubuntu3.1), nginx-light:amd64 (1.6.2-5ubuntu3.1)

On July 19th: you installed the `nginx` metapackage, which installed nginx-common and nginx-core. Ten days later, on the 29th, you removed nginx-core, nginx-common, and nginx. You then installed nginx-common, nginx-light, and nginx.

With the bug, this is the error you are failing to install with (i.e. the service can't start because of - see the SystemctlStatusFull_Nginx.txt.txt attachment):

Jul 29 20:08:06 nn nginx[976]: nginx: [emerg] open() "/etc/nginx/fastcgi.config" failed (2: No such file or directory) in /etc/nginx/sites-enabled/default:49
Jul 29 20:08:06 nn nginx[976]: nginx: configuration file /etc/nginx/nginx.conf test failed

This indicates that somewhere in your configuration, an `include` was added to include the `fastcgi.config` file. However, that file doesn't exist even in a standard installation. It's actually called 'fastcgi.conf'.

Also, when you 'remove' a package, it doesn't actually erase the configuration files - it just removes the binary executables, so it left whatever configurations you had intact.

This is not a bug in the nginx package. This is an issue with the configuration file being left behind (it is NOT removed during an `apt-get remove` or a 'Remove package' command from Synaptic, only when you say 'Completely Remove' or run `apt-get remove --purge` to totally remove the package AND configuration files) having an incorrect configuration argument.

I can only surmise that during the ten days you had nginx-core installed, you messed around with the configuration files and mistyped the include line in the default sites-available file. This is, however, not a bug.

[Thomas Ward (teward)]

If you wish to replace everything with a default install, do the following commands. ***Make sure that you back up anything you want to keep from /etc/nginx or /usr/share/nginx/html***:

sudo apt-get purge nginx nginx-light nginx-full nginx-extras nginx-common
sudo apt-get install nginx nginx-light nginx-common

This will purge all the existing configuration files and any of the nginx flavors, and then reinstall then with defaults.

[Bernhard Nikola (bnikola)]

Hello Thomas,

thx for the answer(s).

The -misstyped- file was really

fastcgi.config, cos i tool from the internet, and there are much configurations possible, everyone makes one - lol.

Now NGINX (1.9.1.1) is running, thx.

Greetings
Bernhard

.......................

Am 29.07.2015 um 22:22 schrieb Thomas Ward:
> If you wish to replace everything with a default install, do the
> following commands. ***Make sure that you back up anything you want to
> keep from /etc/nginx or /usr/share/nginx/html***:
>
> sudo apt-get purge nginx nginx-light nginx-full nginx-extras nginx-common
> sudo apt-get install nginx nginx-light nginx-common
>
>
> This will purge all the existing configuration files and any of the nginx flavors, and then reinstall then with defaults.
>