Differences

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--- centos_8_migration_notes [2020/09/30 11:52] – juckins
+++ centos_8_migration_notes [2020/10/08 08:30] – juckins
@@ Line 7: / Line 7: @@
   * Disable WiFi LAN connection with ''# nmcli radio wifi off''
   * [[https://unix.stackexchange.com/questions/152691/how-to-disable-beep-sound-in-linux-centos-7-command-line|Disable bell]]
-May 2020:
-  * System randomly reboots when KVM toggles back and forth from Dell XPS 8930 (running CentOS 7 as 'tidewater') and HP Pavilion P7-1240
-  * Noticed monitoring emails not being sent from tidewater; postfix not running and won't start. mysql error.
-  * yum reinstall <mysql_package> that was failing
-  * postfix started
-  * Other trouble...had to completely uninstall PHP
-  * Reinstall PHP - that is v5.4
-  * Then upgrade to REMI php v7.4
-  * Look in the bash setup script to install the needed php files
-  * Restore /etc/php.ini from a local VM
-  * restart httpd service
-  * yum update had many instances of 'empty files'....it fixed itself
-  * ldconfig gave errors for 2 more things
-    * yum reinstall oniguruma5
-    * yum reinstall oniguruma
-  * reboot system, came up cleanly
-  * may need to check if mysql connection limit needs to be increased
-December 2016:
-  * VM machine #1 failed to boot into kernel-3.10.0-514.2.2.el7.x86_64
-    * Yum had hung up when updating open-vm-tools and I did a ''CTRL-C'' (bad move)
-    * Booting machine into previous kernel had no network connection; rebooting once again got network up
-    * RPM database completely hosed; had to erase this VM and restore from backup
-  * VM machine #2 was a clone of a test CentOS 7 VM (v7.2.1511) and it got stuck on trying to update ''open-vm-tools-10.0.5-2.el7.x86_64''
-    * cancelled by CTRL-C
-    * had to install "yum-utils" and run ''yum-complete-transaction''
-    * yum then failed because transaction size changed
-    * ran ''package-cleanup --dupes''
-    * ran ''package-cleanup --problems''
-    * ran ''package-cleanup --cleandupes''
-    * Still a mess, ran ''yum check'' and too many errors to fix
-    * Erased VM
-  * VM machine #3 was clone of test CentOS 7 VM (v7.2.1511)
-    * tried to remove open-vm-tools - hung up so aborted attempt
-  * VM machine #4 test was clone of test CentOS 7 VM (v7.2.1511)
-    * ''yum update --exclude=open-vm-tools*''
-    * machine updated and booted into new kernel normally
-    * ran ''yum -y update''
-      * stalled again
-      * ''top -d 2'' showed high CPU usage for process "vmware-checkvm"
-      * **did ''ps -ef |grep vmware''**
-      * **saw this process: ''root      3186  3182 97 17:08 pts/0    00:07:55 /usr/bin/vmware-checkvm''**
-      * **issued ''kill 3186'' and the yum update completed**
-  * Primary machine updated OK
-    * Virtual Box VMs would not start
-    * Had to run as root ''/sbin/rcvboxdrv setup''
-June 2016:
-  * Primary system migrated
-May 2016:
-  * Xfce Power Manager icon appeared in task bar
-    * Might be a way to configure screen blanking
-April 2016:
-  * NUX repository needed for rdesktop
-    * https://www.certdepot.net/rhel7-install-nux-repository/
-    * xfreerdp doesn't always authenticate to Windows 7 hosts
-February 2016:
-  * High CPU usage for vmtoolsd process
-    * removed open-vm-tools-desktop
-    * rebooted; open-vm-tools still remained but did not use high CPU
-Restarting Services: http://www.putorius.net/2014/07/restarting-services-in-red-hat-7-or.html
 For migrating a system from a different OS, take note of this info first:
@@ Line 358: / Line 291: @@
   * Best to run the script by establishing SSH connection to box from a different machine.
   * Pipe output to log file and tail the log file
-  * [[Yum installer bash script (CentOS7)|Copy this source to a .bash and run as root]]
+  * [[yum_installer_bash_script_centos8|dnf installer bash script (CentOS 8)]]
 [[install_configure_cpan|CPAN packages]] to install: