====== Install Ubuntu 18.04.5 ======
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===== Starting the installation =====

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Download Ubuntu 18 here: [[https://releases.ubuntu.com/18.04.5/|https://releases.ubuntu.com/18.04.5/]]
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mount the downloaded Ubuntu 18.04.5 .iso file
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reboot your system
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select a language (english is fine)
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{{:linux:ubuntu:pasted:20210830-142222.png}}
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select "Install Ubuntu Server"
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{{:linux:ubuntu:pasted:20210830-142325.png}}
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===== Configuration =====
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==== Select your language ====
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==== Configure the keyboard ====
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{{:linux:ubuntu:pasted:20210830-125147.png}}
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press y
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{{:linux:ubuntu:pasted:20210830-125155.png}}
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select yes if you have "ö"
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{{:linux:ubuntu:pasted:20210830-125226.png}}
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press "ö"
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select no for the weird e
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==== Configure the network ====
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select your primary network interface
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{{:linux:ubuntu:pasted:20210830-125642.png}}
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enter your hostname
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==== Set up users and passwords ====
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enter the full name for the first user
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enter the username
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enter a complex password
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==== Configure the clock ====
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if the autoselected timezone is correct select yes, otherwise select no and chose the correct location
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==== Partition disks ====
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if you had a server before, select unmount partitions
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select "Manual" and then set up LVs (LVM)
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select your disk
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partition the disk -1GB space (for /boot)
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select "Primary"
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select "Beginning"
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set use as "physical volume for LVM" and select "Done setting up the partition"
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select the "1 GB FREE SPACE"
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select "Create a new partition"
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continue with the 1 GB
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again choose "Primary"
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set "Ext4" and mount point "/boot", you can also set the label as "/boot"
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select "Configure the Logical Volume Manager"
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select "Create volume group"
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choose a name for your VG
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and place it on your correct partition
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{{:linux:ubuntu:pasted:20210830-140500.png}}
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select "Create logical volume"
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{{:linux:ubuntu:pasted:20210830-135908.png}}
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select your VG
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choose a name for your LV
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then select the size (if you have the chance to extent your PV/VG, you should create a 10GB root and some fitting /etc /var /home mounts as well. in my case I cannot extent it so I chose to use all on /)
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{{:linux:ubuntu:pasted:20210830-140529.png}}
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select your new LV
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set "XFS" and the mountpoint "/"
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it should look like this now, if so, write changes to disk
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{{:linux:ubuntu:pasted:20210830-140747.png}}
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===== OS Installation =====
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==== Proxy ====
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during the next loadingscreens you will be asked for a proxy, if you dont have one leave it blank, otherwise insert your proxyip
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==== Configuring tasksel ====
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select "No automatic updates" otherwise your OS will install updates without your interaction
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==== Software selection ====
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choose "OpenSSH server", you can install the other software later
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{{:linux:ubuntu:pasted:20210830-141617.png}}
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==== Select and install software ====
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wait..
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{{:linux:ubuntu:pasted:20210830-141802.png}}
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==== Install the GRUB boot loader on a hard disk ====
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select "yes"
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{{:linux:ubuntu:pasted:20210830-141941.png}}
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==== Finish the installation ====
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Yay!
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===== After the installation =====
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eject the disk/ iso
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reboot your machine
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fully update your OS
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configure your network interface, sudoers, ssh and consider fail2ban
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[[linux:general:network|Network]]
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[[linux:general:sudoers|Sudoers]]
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[[linux:general:ssh|SSH]]
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[[linux:ubuntu:fail2ban|Fail2Ban]]