Question

I have a remote server with Ubuntu OS. I am using putty to run commands on server. I installed OpenLink open source Virtuoso on it.

Now when I start the server using following commands:

To start the server you have two steps

1. Go to cd /usr/local/virtuoso-opensource/var/lib/virtuoso/db
2. then type /usr/local/virtuoso-opensource/bin/virtuoso-t -f &

The server starts successfully and I am able to access conductor and stuff, but as soon as I close my putty session, the Virtuoso server also shuts down. I am also running tomcat and LAMP on that machine. Those two still keep on running but strangely Virtuoso shuts down.

How can I make stay running even when i disconnect from my putty session?

Answer 1

The -f argument makes the Virtuoso instance run in the +foreground even though the process has been put in the background (by the trailing ampersand, &), and it is tied to your login session.

You can get similar output effects, without the binding to your login session, with the -d or +debug argument.

You can also start the instance without the stdout feedback, with the +loglevel as set in the virtuoso.ini file (default loglevel is 5), by leaving off both -d and -f arguments.

So the two commands to execute become:

1. cd /usr/local/virtuoso-opensource/var/lib/virtuoso/db
2. /usr/local/virtuoso-opensource/bin/virtuoso-t

Now, that db directory is not where I’d expect to find it, so the guide you’re following may need some additional correction. You may find (my employer) OpenLink Software’s guide more helpful.

For future reference, OpenLink Software has several paths to support, with Virtuoso and otherwise, such as the Virtuoso Users mailing list, or our Support site, or our own Support forums, or the IRC channel #openlink-virtuoso on Freenode (irc://chat.freenode.net/#openlink-virtuoso).