it is very simple
install hwe kernel
For Ubuntu 20.04 LTS use following command
apt install linux-generic-hwe-20.04
For Ubuntu 22.04 LTS use following command
apt install linux-generic-hwe-22.04
Attention HWE kernel only 6 months of support, after this you get a new one. Look at this page https://ubuntu.com/about/release-cycle#ubuntu-kernel-release-cycle
it works fine when you have the correct configuration , watch the screenshot
Jenkins sometimes a little bit strange but it works at is.
you have addes a new ssh key and you got following error “you have requested strict checking”
Under configuration “Global Security” scroll down and choose what you need
look a the screen snipet, this config works well.
zypper remove package
will not work you got an error like this
In case ‘exmaple’ is not a typo it’s probably not a built-in command, but provided as a subcommand or plug-in (see ‘zypper help subcommand’).
In this case a specific package providing the subcommand needs to be installed first. Those packages are often named ‘zypper-exmaple’ or ‘zypper-exmaple’.
solution is
zypper remove -u package
In the good old days you are used ifdown and ifup and so you can bring up a network interface. Now you have systemd and you should use networkctl
networkctl list => show all interfaces
networkctl down eht0
shutdown interface
networkctl up eht0
bring up interface
https://manpages.ubuntu.com/manpages/kinetic/en/man1/networkctl.1.html
the last day I have this error very often on my old 6.7 VMware environment.
shutdown your vm, remove all network cards / nic => save
edit settins add new network cards /nic
dmidecode | grep--color -i serial
how to install manually
https://www.tecmint.com/install-apache-tomcat-on-debian-10/
but we want to compile itself and build a deb package
we need java and ant
apt-get install ant
Choose your version as source code https://github.com/apache/tomcat/tags in our example we use 9.0.64
extract the folder and you can run /usr/bin/ant in the extraced tomcat folder after a frew seconds you can find your compiled tomcat under the folder /output/build
apt build-dep tomcat9
dpkg-buildpackage -rfakeroot -b -uc -us
MariaDB and MySQL sometimes realy strange. The last time I had offen dumps between sql server versions. you must not use my pipe for compression this is optional.
mysqldump –events –routines –triggers –single-transaction –default-character-set=utf8mb4 –opt database.dump | gzip > database.sql.gz
If you are need some stresstest for your MySQL server you can use mysqslap. I offen use this command
mysqlslap --auto-generate-sql --concurrency=100 --iterations=200
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