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1.1 Mac Mini versionsThe recommended configuration of a workshop server is:These instructions have been tested on the following models:When you have Linux running, you can determine your model using sudo dmidecode -s system-product-nameFor more information on the different models of Mac Mini see: This is the most powerful server we have found for its size, especially considering that the PSU is internal. 5 Troubleshooting post installation problemsThese notes describe the installation of Ubuntu 14.04 on a Mac Mini. The most interesting part of the article is quoted below: I also found a good (now-defunct) MSKB article 165721 titled How To Ejecting Removable Media in Windows NT/Windows 2000/Windows XP.

When you see 'Configuring network with DHCP' press ENTER to cancel. You may get a choice of boot icons - the USB key will be 'EFI boot'.After this you should get a menu of Ubuntu options: Install Ubuntu ServerSelect 'Install Ubuntu Server' and proceed as normal, choosing country, language and keyboard layout.If you are using the USB-to-ethernet adapter for your external Internet connection, then you will be prompted for the primary network interface: eth0: Broadcom Corporation NetXtreme BCM57765 Gigabit Ethernet PCIeChoose the one which is your ethernet uplink (i.e. Connect ethernet uplink - using the USB-to-ethernet adapter if you have one.Power on and hold the alt/option key while it is starting. Img.dmgSudo dd if=ubuntu-12.04.3-server-amd64.img.dmg of=/dev/rdiskN bs=1mInsert the CD-ROM or flash disk into the Mac Mini, and connect the keyboard and screen. /dev/disk2Sudo dd if=ubuntu-14.04-server-amd64.iso of=/dev/rdiskN bs=1mTo install older versions of Ubuntu you need to use a Mac which is running OSX and follow these instructions hdiutil convert -format UDRW -o ubuntu-12.04.3-server-amd64.img ubuntu-12.04.3-server-amd64.iso# Note: the output filename may be.

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If you see a screen that the install has detected a mounted partition select Yes to unmount the partition before continuing. If you are going to be travelling around the world you should not accept the local timezone, and instead scroll down to 'UTC' at the very end of the worldwide list. Full name for the new user: NSRC instructor Hostname: kit or whatever unique identifier for this setup

Use HTTP proxy? Check with your instructors whether there is a local cache you should use to speed up installation. Amount of volume group to use for guided partitioning: 50G (This will give about 31G root and 16G swap, but these are easy to grow later if required)The partitioning generated should look something like this: LVM VG hostname-vg, LV root as ext4Partition #1 of SCSI1 (0,0,0) (sda) as EFIbootPartition #2 of SCSI1 (0,0,0) (sda) as ext2 'Write changes to disk and configure LVM?' Yes 'Select disk to partition' SCSI1 (0,0,0) sda

Use the space bar to toggle selections.Installation is complete: hit Enter, then unplug CD-ROM or USB stick when the screen goes black.Your Mac should be up and running - login as user nsrc.Use ifconfig -a to find its external IP address, and you should be able to ssh into it from outside. Software to install: select only 'OpenSSH server'. No automatic updates (you don't want changes in the middle of a workshop)

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# pvmove -n swap_1 /dev/sda3 /dev/sdbOptionally, you could also reduce its size. # lvcreate -size 300G -stripes 2 -stripesize 4096 -name data -vgTo see which physical volume(s) each logical volume is using: # lvs -a -o +devices# lvs -a -o name,lv_size,devices 4.2 Optimise the swap volumeYou can move the swap volume to the second disk, which helps balance the usage slightly. Choosing a large stripe size ensures that smaller reads and writes hit only a single disk. By creating a 'striped' volume, half of the extents will be on each disk this increases performance by dividing the read and write load between the disks. It helps when locating the machine without a monitor.Since all the following commands need to be done as root, get a root shell: $ sudo -sThe second hard drive can now be made available for storing data.The simplest way to do this is to make the whole second drive an LVM physical volume, and add it to our volume group.First, check your current volume group name: # vgsLook under the first column 'VG': if it was created by the Ubuntu installer it will be something like ' -vg'.Label your second drive as a physical volume, and add it to the volume group: # pvcreate /dev/sdbNow check your work: # pvs # should show both /dev/sda3 and /dev/sdb as physical volumes# vgs # The '#PV' (number of physical volumes) and VSize/VFree should increaseAlternatively you could choose to partition it in the same way as the first drive, and it might be possible to boot off this drive if the first one fails - but you'd almost certainly have lost your OS installation anyway.Now let's create a new logical volume and mount it under /data.

You can see that neither eth0 or eth1 are configured by doing: $ ifconfigTo fix this, as root, at the command line prompt type: # vi /etc/network/interfacesMake sure the file looks like this: auto loNow to bring up both interfaces with their new configurations do: # ifup eth0Wait a few seconds for the script to complete then type: # ifconfigTo see that your network is now configured. # swapoff -aWARNING: Reducing active logical volume to 4.00 GiBTHIS MAY DESTROY YOUR DATA (filesystem etc.)Do you really want to reduce swap_1? : yReducing logical volume swap_1 to 4.00 GiBLogical volume swap_1 successfully resizedFinally enable the swap partitions again # swapon -a# free # should have 4GB of swap space 4.3 Configure the internal network interfaceWe purposely did not configure our network interfaces during installation so that the installation would go faster and we could configure out interfaces as we want now. If you don't intend to use hibernate functionality you can reduce it to (say) 4GB, as you never want your machine to go this far into swap anyway.

4.4 Update all packagesNow that our base operating system is installed we need to pull down a list of current versions of available packages and then download and install the packages.Let's first see what version of the Linux kernel we are running: $ uname -aRemember this and see if you have a newer kernel version once we are finished with this exercise.