Wsrtjtyk

I have version 3.3.5 and want to upgrade to 3.3.11. The following script was used:

#Step 1 Copy the whole data directory of arango to another location, basically a backup



cp -R /var/lib/arangodb3 /folder



#Step 2 Stop the current running process



service arangodb3 stop



#Step 3 Installing new ArangoDB, adding the key and stuff (the below is for 16.04 Ubuntu)



curl -OL https://download.arangodb.com/arangodb33/xUbuntu_16.04/Release.key

sudo apt-key add - < Release.key

sudo apt-get install apt-transport-https



sudo apt-get update

read -p "Enter the version zou want to upgrade to (For example 3.3.5)" version

sudo apt-get install arangodb3=$version



#Step 4 Start the process again with auto-upgrade option on

service arangodb3 start --database.auto-upgrade

At the end of step 3. when install the arango version this error pop up

Setting up nginx-core (1.10.3-0ubuntu0.16.04.3) ...

Job for nginx.service failed because the control process exited with error code. See "systemctl status nginx.service" and "journalctl -xe" for details.

invoke-rc.d: initscript nginx, action "start" failed.

● nginx.service - A high performance web server and a reverse proxy server

   Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)

   Active: failed (Result: exit-code) since Do 2018-11-22 11:07:07 CET; 8ms ago

  Process: 16614 ExecStart=/usr/sbin/nginx -g daemon on; master_process on; (code=exited, status=1/FAILURE)

  Process: 16610 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=0/SUCCESS)

 Main PID: 1328 (code=exited, status=0/SUCCESS)



Nov 22 11:07:05 SB28 nginx[16614]: nginx: [emerg] listen() to [::]:80, backlog 511 failed (98: Address already in use)

Nov 22 11:07:06 SB28 nginx[16614]: nginx: [emerg] listen() to 0.0.0.0:80, backlog 511 failed (98: Address already in use)

Nov 22 11:07:06 SB28 nginx[16614]: nginx: [emerg] listen() to [::]:80, backlog 511 failed (98: Address already in use)

Nov 22 11:07:06 SB28 nginx[16614]: nginx: [emerg] listen() to 0.0.0.0:80, backlog 511 failed (98: Address already in use)

Nov 22 11:07:06 SB28 nginx[16614]: nginx: [emerg] listen() to [::]:80, backlog 511 failed (98: Address already in use)

Nov 22 11:07:07 SB28 nginx[16614]: nginx: [emerg] still could not bind()

Nov 22 11:07:07 SB28 systemd[1]: nginx.service: Control process exited, code=exited status=1

Nov 22 11:07:07 SB28 systemd[1]: Failed to start A high performance web server and a reverse proxy server.

Nov 22 11:07:07 SB28 systemd[1]: nginx.service: Unit entered failed state.

Nov 22 11:07:07 SB28 systemd[1]: nginx.service: Failed with result 'exit-code'.

dpkg: error processing package nginx-core (--configure):

 subprocess installed post-installation script returned error exit status 1

Setting up arangodb3 (3.3.11) ...

Database files are up-to-date.

Errors were encountered while processing:

 nginx-core

E: Sub-process /usr/bin/dpkg returned an error code (1)

An nginx error.My question is what is the role of nginx here in the upgrading of arango? (It seemed that arango cannot start it own nginx)

The problem has nothing to do with nginx. Your arangodb installation did not finish correctly as it seems. As a consequence systemctl deamon-reload errored ... Please run

sudo dpkg-reconfigure arangodb3

and update your question with the output, please.