centos_7_migration_notes
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centos_7_migration_notes [2022/05/18 09:29] – juckins | centos_7_migration_notes [2023/12/14 10:10] – juckins | ||
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RHEL5/6/7 Cheatsheet: {{: | RHEL5/6/7 Cheatsheet: {{: | ||
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+ | [[https:// | ||
+ | |||
+ | 14 Dec 2023 (for Dell XPS 8930 tower): | ||
+ | * Updated kernel from kernel-3.10.0-1160.102.1.el7.x86_64 to kernel-3.10.0-1160.105.1.el7.x86_64 | ||
+ | * Attempted to rebooted machine but after the BIOS splash screen, only got a blank screen with blinking cursor in upper-left corner | ||
+ | * Restarted machine using the power button but had same condition | ||
+ | * Restarted once again but at the BIOS splash screen selected F12 | ||
+ | * For boot options, chose Boot from Hard Drive and list of kernels appeared | ||
+ | * Chose latest kernel and machine was OK | ||
+ | * After machine was running, did another restart and machine powered up with no issues | ||
+ | |||
+ | 23 Oct 2023 (for Dell XPS 8930 tower) | ||
+ | * Updated kernel from kernel-3.10.0-1160.99.1.el7.x86_64 to kernel-3.10.0-1160.102.1.el7.x86_64 and then machine would not boot, just blank screen with blinking cursor in upper-left corner | ||
+ | * Powered off machine, unplugged the USB peripheral cables | ||
+ | * Unplugged power cable for 30 seconds | ||
+ | * Rebooted and used F12 to go into BIOS Boot Options | ||
+ | * Tried to boot to Hard Drive but that immediately failed with error 'press any key to reboot' | ||
+ | * After that, the machine booted up OK and the normal selection of kernels appeared | ||
Other fixes: | Other fixes: | ||
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* '' | * '' | ||
* Updated / | * Updated / | ||
- | * '' | + | |
- | * //Note that 800 worked, but 818 seems to be the absolute limit// | + | |
- | | + | back_log = 1024 (Note that OS limit is in /proc/sys/ |
+ | | ||
+ | thread_handling = pool-of-threads | ||
+ | |||
+ | Then do: '' | ||
* Other commands to check and modify on mariadb server: | * Other commands to check and modify on mariadb server: | ||
- | * '' | ||
- | * Do that command inside phpMyAdmin logged in as root | ||
* '' | * '' | ||
* '' | * '' | ||
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* '' | * '' | ||
* '' | * '' | ||
+ | * See https:// | ||
* Also check python3 coding best practices for opening/ | * Also check python3 coding best practices for opening/ | ||
+ | * I have noted that opening and closing the database connection only once in the python script helps reduce database " | ||
* [[https:// | * [[https:// | ||
* import MySQLdb | * import MySQLdb |
centos_7_migration_notes.txt · Last modified: 2023/12/14 10:10 by juckins