Installation of Ubuntu 18.04 LTS on solid state drive for fishfish

20180530~20180602

Followed instructions from this answer:

Shrunk /dev/sdf2 from 2.67 TiB to 851.93 GiB using GParted. The commands used by GParted are:

# Check file system on /dev/sdf2 to errors and (if possible) fix them
e2fsck -f -y -v -C 0 '/dev/sdf2'
    
# Shrink file system
resize2fs -p '/dev/sdf2/' 893310976K

Attempted to copy filesystem to new solid state drive with GParted.
- However, couldn’t figure out how to copy the Master Boot Record, so operation was aborted.
Installed fresh Ubuntu 18.04 LTS on new solid state drive with a USB stick
1. Booted the system from the USB stick, with both the solid state drive and the old filesystem inserted
2. Double-clicked on Install Ubuntu 18.04 LTS on the desktop
3. Chose English (US) for keyboard layout
4. Chose Normal installation and Download updates while installing Ubuntu, but not “Install third-party software for graphics and Wi-Fi hardware and additional media formats” (default settings)
5. Upon the message: “This computer currently has Ubuntu 16.04.4 LTS on it. What would you like to do?”, chose “Something Else”
6. Under installation type, chose the solid state drive (identified with the Disks utility), /dev/sdb ATA Crucial_CT1050MAX (1.1 TB) for the “device for boot loader installation”
7. However, things got complicated, has the partitioning had to be manual. Therefore, system was rebooted with the old filesystem removed.
8. This time, upon the message: “This computer currently has no deteting operating systems on it. What would you like to do?”, chose “Erase disk and install Ubuntu” and clicked “Continue” for “Write changes to disk”
9. For “Where are you?” (time zone settings), maintained the default “New York”
10. For “Who are you?” (user setting), used “Adam Lu” for “Your name” and “fishfish” for “Your computer’s name”
11. After the “Installation Complete” message shows up, clicked “Restart Now”
12. After reboot, clicked “Set Up Livepath”
  - Set up Ubuntu Single Sign-On Account
13. Updated Ubuntu and restarted
The /etc/fstab file
- Inserted other drives one by one and verified they were detected with the Disks utility. Rebooted and made sure they were still detected
- Made directories (with root) for all the media drives:
```
sudo mkdir /media/shareX
...
sudo mkdir /media/EEG_2016-
```
- Modified the /etc/fstab file accordingly, consulting the previous setting backup_etc_fstab_fishfish.log
Set up the firewall (ufw)
- By default the firewall is disabled:
```
sudo ufw status
```
  shows:
  
  Status: inactive
- Enable the firewall:
```
sudo ufw enable
```
  shows:
  
  Firewall is active and enabled on system startup
Installed Webmin per these instructions:
- Edited the file /etc/apt/sources.list
```
sudo vi /etc/apt/sources.list
```
  Added this line:
```
deb http://download.webmin.com/download/repository sarge contrib
```
- Next, added the Webmin PGP key so that fishfish will trust the new repository:
```
wget http://www.webmin.com/jcameron-key.asc
sudo apt-key add jcameron-key.asc
```
- Next, updated repositories and install Webmin:
```
sudo apt-get update
sudo apt-get install webmin
```
- The file jcameron-key.asc is saved in `~/Settings_Linux/Upgrade
Rebooted and checked that all drives are mounted properly
Ran the following under /media/adamX/Settings_Linux:
```
bash setup_dotfiles.sh adam
bash setup_binfiles
```
Installed SSH server per these instructions:
1. Installed tasksel
```
  sudo apt install tasksel  
```
2. Used tasksel to install the openssh-server
```
  sudo tasksel install openssh-server
```
3. Rebooted
Network
- Installed the net-tools package for ifconfig:
```
sudo apt-get install net-tools
```
- Ran ifconfig and discovered that the IP has changed to 128.143.17.146!
- Added IP addresses to the ufw firewall with add_IP.sh or with sudo ufw allow proto tcp from XXX.XXX.XX.XX to any port 10000 according to the file ufw_IPs_fishfish.md
- Used MobaXTerm to verify that ssh worked
- Webmin was successfully accessed at https://128.143.17.146:10000/
- Installed Samba server per these instructions:
  1. Use tasksel to install the samba-server
    sudo tasksel install samba-server
  2. On Webmin, clicked on Convert Users to convert existing Unix users to a Samba user
  3. For each file share, changed Security and Access Control settings:
    - Changed Writable to Yes
    - Add LabFolks and Collaborators to Read only groups or Read/write groups
    - Added specific users to Read only users or Read/write users
  4. For each file share, changed File Permissions settings:
    - Changed New Unix file mode to 775
    - Changed New Unix directory mode to 775
  5. Changed User Synchronization settings
    - Clicked Yes for all, including: Add a Samba user when a Unix user is added , Change the Samba user when a Unix user is changed and Delete the Samba user when a Unix user is deleted
- Updated User/Group settings with Webmin to be consistent with old fishfish
  - Changed User ID for adam to 1006
  - Added Group LabFolks with ID 1001
  - Added Group Collaborators with ID 1004
    - Added adam to Webmin users
  - Changed root password to my password (not sure if there is a default password or not) by sudo bash, then passwd
  - Added mark to Webmin users
  - Added the rest of the users according the user ID in the old /etc/passwd file. Only the users in the file user_accounts_fishfish.md were added
  - Made all user passwords the same as the lab computer password
  - Created a script setup_homedir.sh under /media/adamX/Settings_Linux and applied it to all users after logging in with the uniform password.
  - Clicked Yes for Force change at next login? for all users except adam

Set up desktop files

   # Set up desktop files under /usr/share/applications
   bash setup_desktopfiles.sh
     
   # Set up desktop files under each home directory
   bash setup_all_desktopfiles.sh

Generated public keys:

Generated a public key for fishfish and placed it on chalkboard & rivanna with these instructions:

# Generate ssh public key
ssh-keygen
       
# Copy the public key to chalkboard
ssh-copy-id -i ~/.ssh/id_rsa.pub adam@128.143.16.133
       
# Copy the public key to rivanna
ssh-copy-id -i ~/.ssh/id_rsa.pub al4ng@rivanna.hpc.virginia.edu

Did the same for chalkboard on fishfish and rivanna

Created the folder /home/Matlab and restored everything from the lab GitHub site with commands such as:
```
   git clone https://github.com/blabuva/Marks_Functions.git
```
Updated settings for combine_all_current_notebooks.sh
- Created the folders /home/grads, /home/undergrads
- Changed ownership to adam:LabFolks and permissions to 775
Updated /etc files:
- Used vimdiff to compare the current /etc files with those under ~/Settings_Linux/backup_settings/old_fishfish
- Environmental variables are now updated in /etc/bash.bashrc