Christopher Juckins

9 December 2020

• Updated to CentOS Linux release 8.3.2011
• Booting into new kernel kept failing
  • complained /boot ext4 filesystem was unknown
• Booted into previous kernel OK
• Did "rpm -qa |grep kernel | sort" and looked for all the latest versions

kernel-4.18.0-240.1.1.el8_3.x86_64
kernel-core-4.18.0-240.1.1.el8_3.x86_64
kernel-devel-4.18.0-240.1.1.el8_3.x86_64
kernel-headers-4.18.0-240.1.1.el8_3.x86_64
kernel-modules-4.18.0-240.1.1.el8_3.x86_64
kernel-modules-extra-4.18.0-240.1.1.el8_3.x86_64
kernel-tools-4.18.0-240.1.1.el8_3.x86_64
kernel-tools-libs-4.18.0-240.1.1.el8_3.x86_64

Then reinstalled all of them using:

dnf reinstall kernel-4.18.0-240.1.1.el8_3.x86_64 kernel-core-4.18.0-240.1.1.el8_3.x86_64 kernel-devel-4.18.0-240.1.1.el8_3.x86_64 kernel-headers-4.18.0-240.1.1.el8_3.x86_64 kernel-modules-4.18.0-240.1.1.el8_3.x86_64 kernel-modules-extra-4.18.0-240.1.1.el8_3.x86_64 kernel-tools-4.18.0-240.1.1.el8_3.x86_64 kernel-tools-libs-4.18.0-240.1.1.el8_3.x86_64 

Rebooted into new kernel, working OK.

15 October 2020

• For centos8-vtatdb2-l, selinux seems to have gotten messed up
  • Tried a new VM by cloning centos8-minimal and immediately disabling selinux, rebooting
• mod_security was giving httpd errors and permission denied
  • Try disabling this and then testing httpd stuff

29 September 2020

• Create new VM and install CentOS 8 minimal
  • download iso from https://www.centos.org/download/
  • modify hostname
  • modify disk partitions if needed
  • For 'Display' settings, do not check "Enable 3D Acceleration" as it may prevent MATE environment from appearing
• Boot up VM and login
• Use ifconfig to determine its IP address
• Open a terminal window and ssh into it
• set up local account .bashrc and ssh stuff; same for root
• su to root
• mkdir /root/bin
• Copy contents of dnf installer bash script (CentOS 8) to a .bash script
• Run script and pipe output to a log file
• When complete, check for errors and make adjustments
• Reboot

Other modifications

• Try different theme, like "TraditionalOK"
• Disable screensaver
• Install MATE using https://copr.fedorainfracloud.org/coprs/stenstorp/MATE/
  • Other discussion at https://centosfaq.org/centos/centos-8-mate/
• Download password gorilla from https://gorilla.dp100.com/downloads/
• Install PHP 7.4 following https://www.tecmint.com/install-php-on-centos-8/
• Install perl-HTML-TableExtract.noarch (saved on host linux in /root/downloads_centos8)
  • needed for AT&T broadband gateway usage script
  • used perl-HTML-TableExtract-2.11-4.el7.noarch.rpm and tested OK
• Install perl-Math-Round (saved on host linux in /root/downloads_centos8)
  • needed for AT&T broadband gateway usage script
  • used perl-Math-Round-0.06-1.el6.rf.x86_64.rpm and tested OK
• Install perl-List-Compare (saved on host linux in /root/downloads_centos8)
  • not sure where it's needed (if at all?)
  • used perl-List-Compare-0.37-1.el6.rf.noarch.rpm but not tested
• If needed:
  • install DCV Viewer
  • dnf install pidgin
  • dnf install x2goclient

TO DO

• Install X2Go

IGNORE LIST

• Look at GNOME Shell Extensions
  • Dash to Panel
  • Installing extensions
• Figure out NUX repo issues
• Customize GNOME Classic with the links:
  • tips 1
  • tips 2
  • tips 3
  • Try to replicate MATE look & feel in GNOME classic
    • use gnome-tweaks to make adjustments
• System language seems to be British (Colours)