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ubuntu_18_notes

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ubuntu_18_notes [2021/02/21 11:04]
juckins created
ubuntu_18_notes [2021/05/17 16:05] (current)
juckins
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 ==== VirtualBox running Ubuntu 18 Notes ==== ==== VirtualBox running Ubuntu 18 Notes ====
 +
 +__20 Jul 2020__
 +
 +Updated VirtualBox to 6.1.12 and Ubuntu 18 would not login after MATE authentication screen (just got black screen).  Went into /opt/VBoxGuestAdditions-6.1.8 and uninstalled the Guest Additions.  Rebooted, logged in correctly.  Then installed latest version of GuestAdditions.  Rebooted again, logged in and all worked correctly.
 +
 +If restarting makes the screen go black again, use CTRL-F in VirtualBox 2 times, and that restores it.
 +
 +__Other Notes__
 +
 +[[https://linuxize.com/post/how-to-install-teamviewer-on-ubuntu-18-04/|TeamViewer installation]]
 +
 +[[https://linuxconfig.org/how-to-install-lamp-ubuntu-18-04-bionic-beaver-linux-apache-mysql-php|LAMP on Ubuntu 18.04]]
 +
 +[[http://howtoubuntu.org/how-to-install-lamp-on-ubuntu|General LAMP install]]
 +
 +[[https://help.ubuntu.com/stable/ubuntu-help/net-firewall-on-off.html|Firewall settings]]
 +
 +[[https://askubuntu.com/questions/44418/how-to-enable-root-login|Enabling root]] (or use sudo -i)
 +
 +Release info:  
 +<code>
 +lsb_release -a
 +</code>
 +
 +View installed kernels:
 +<code>
 +# dpkg --list | grep linux-image
 +</code>
 +
 +Remove old kernels:
 +
 +  * https://code.launchpad.net/~jarnos/linux-purge/+git/linux-purge
 +    * # linux-purge -s
 +    * # linux-purge
 +    * # linux-purge -m
 +  * https://www.pontikis.net/blog/remove-old-kernels-debian-ubuntu (deprecated)
 +
 +[[https://packages.ubuntu.com/search?keywords=openconnect|Searching for Ubuntu Packages and versions]]
 +
 +View installed packages:
 +<code>
 +# apt list --installed
 +# dpkg --get-selections | grep -v deinstall |grep unifi
 +</code>
 +
 +Remove installed package:
 +<code>
 +# dpkg -r package_name
 +</code>
 +
 +
 +----
 +
 +Ubuntu 18.04 LTS
 +  * After initial login, change preferences in terminal and remove undesired favorites
 +  * [[https://websiteforstudents.com/how-to-install-ubuntu-16-04-17-10-18-04-guest-machines-on-virtualbox/|VirtualBox installation notes]]
 +  * Allow Virtualbox guest additions:
 +<code>
 +sudo apt update
 +sudo apt install build-essential gcc make perl
 +sudo apt install vim
 +sudo apt install gnome-software
 +sudo apt install openssh-server
 +reboot
 +</code>
 +
 +  * [[https://linuxconfig.org/how-to-install-mate-desktop-on-ubuntu-18-04-bionic-beaver-linux|Install MATE Desktop link #1]]
 +  * [[https://www.hiroom2.com/2018/05/06/ubuntu-1804-mate-en/|Install MATE Desktop link #2]]
 +  * [[Install UniFi on Ubuntu|Install UniFi on Ubuntu]]
 +
 +__12 Sep 2019__
 +
 +[[https://hostadvice.com/how-to/configure-apache-with-tls-ssl-certificate-on-ubuntu-18/|Configure Apache HTTPS on Ubuntu 18]]
 +
 +__26 Jan 2019__
 +
 +Logging into Desktop GUI only gives a blank screen:
 +  * Final fix was to do CTRL-F to toggle VirtualBox between fullscreen mode
 +  * Tried updating VirtualBox Guest Additions to v5.2-5.2.24 but no change
 +  * Tried updating packages using commands below
 +
 +Use these commands to update packages, as it allows interactive use to answer questions:
 +<code>
 +sudo apt update
 +sudo apt upgrade
 +sudo apt --with-new-pkgs upgrade
 +</code>
 +
 +Very slow using Ubuntu GUI now:
 +  * Enable 3D acceleration in VirtualBox settings
 +  * Allocate 128MB video RAM
 +  * Restart and test
 +  * Also see these links:
 +    * [[https://thomas.vanhoutte.be/miniblog/guide-speed-up-ubuntu-virtualbox/|Speeding up Ubuntu]]
 +    * [[https://www.linuxbabe.com/virtualbox/speed-up-ubuntu-virtualbox]]
 +
 +Check that 3D acceleration is supported:
 +
 +  sudo apt install nux-tools
 +  /usr/lib/nux/unity_support_test -p
 +
 +
 +Installing mysql:
 +
 +<code>
 +sudo apt install mysql-client-core-5.7   
 +sudo apt install mysql-server
 +sudo /usr/bin/mysql_secure_installation
 +</code>
 +
 +Then login like this:
 +  sudo mysql -u root -p
 +  
 +Login with a non-root user like this:
 +  mysql -u username -p
 +  
 +See notes at [[https://www.digitalocean.com/community/tutorials/how-to-install-mysql-on-ubuntu-18-04]] for setting up a new user
 +
 +Other SQL commands/testing:
 +
 +
 +  CREATE USER 'username'@'localhost' IDENTIFIED BY 'password';
 +  GRANT ALL PRIVILEGES ON *.* TO 'username'@'localhost' IDENTIFIED BY 'password';
 +  CREATE DATABASE dbname;
 +  SET PASSWORD FOR 'username'@'localhost' = PASSWORD('password');
 +  
 +To allow logins to mysql via adminer:
 +
 +https://serverfault.com/questions/1001274/adminer-denied-acces-for-user
 +
 +  # su -
 +  # mysql -u root -p 
 +  > ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'YOUR_PASSWORD';
 +  # systemctl restart mysql
 +  # systemctl restart apache2.service
 +  
 +To upgrade MySQL v5.7 to 8.x follow [[https://www.javacodemonk.com/upgrade-mysql-from-5-7-to-8-on-ubuntu-18-04-bd9b5e46|this link]]
 +
 +To fix this locale error upon login:
 +
 +<code>
 +-bash: warning: setlocale: LC_ALL: cannot change locale (en_US)
 +</code>
 +
 +run the following:
 +  
 +  sudo locale-gen en_US
 +  locale -a
 +  
 +and confirm you see en_US now.  See [[https://ubuntuforums.org/showthread.php?t=1675347&page=2]] for more info.
ubuntu_18_notes.1613923497.txt.gz ยท Last modified: 2021/02/21 11:04 by juckins