My Server Configuration



These were the steps that I went through to configure my server after installing Ubuntu.  (just to help remember)

Installing SSH

My first requirement for a server is that I be able to get to it from my laptop.  SSH will allow me to both open remote terminal sessions and copy files from nautilus.

I simply installed this ssh metapackage from the Software Center.

My first attempt to connect brought me this message:


@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.

This was because I was reinstalling my server, and I had connected to the previous installation with my laptop.  The fix was easy (it was actually in the message):

ssh-keygen -R israel

To set it up to where I could connect without a password, I ran this command:

ssh-copy-id israel

Printing

I have an HP printer, so I chose to install the HPLIP Toolbox from the Software Center.

I could launch it through ssh with the command “hp-toolbox”.  Then, I chose the Setup Device option off the Device menu for my printer.

I selected USB:

Then, I selected the device:

Then, I entered the information about the printer:

This added, the printer.  Next, I made it the default printer:

To make the printer accessible over the network, I had to tweak the cups configuration.  I edited the /etc/cups/cupsd.conf.  I added a Listen line with the machine’s hostname.

I also turned “Browsing” on to make it easier to discover the printer.

To make the network name resolve correctly, I removed this line from /etc/hosts:

Finally, I restarted the cups service with the command:

sudo service cups restart

That gave me some access, but I still had issues.  Then, I found an easier way to do it.  I ran the the printer configuration:

system-config-printer

On the printer dialog, there is a Server > Settings option.

There, I checked the sharing options to open things up for my private network.

Java Installation

I have a personal application that I use at home, and Java is a requirement for that.  I took the easy route and installed Java using Web Upd8′s method.  That just meant running these three commands:

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer

I confirmed that it installed with:


skp@israel:~$ java -version
java version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b55)
Java HotSpot(TM) Client VM (build 24.0-b22, mixed mode)
skp@israel:~$ javac -version
javac 1.8.0-ea

Finally, I needed to add a mysql user.  I don’t need to install mysql because it’s embedded into my application, but I do need the user.  I used this command:

useradd -r mysql

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