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database backup store mysql datapase pass in /root/.my.cnf so our script can access it. Chmod 600 –> is the way to go [client] user=root password=crazypass backup one user database mysqldump --add-drop-table --databases yourdatabasename > /home/<username>/backups/db/$(/bin/date +\%Y-\%M-\%D).sql.bak backup all databases ...

some commands that are usefull systemctl # list all units / services systemctl list-unit-files # manipulate service systemctl status | start | enable | restart | stop service # start/stop the service at boot systemctl enable | disable service # check the defined targets systemctl list-units --type=target journalctl # general log viewin...

ssh tunneling ssh -L 1234:localhost:8080 remoteuser@remoteserver.net cypher problem sudo cat /etc/ssh/ssh_config --> uncomment this part # Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc --> and add: sudo vim ~/.ssh/config Host 192.168.0.3 KexAlgorithms +diffie-hellman-group1-sha1 HostKeyAlgorithms +ssh-ds...

vagrant I’m using mac m1 and some things like vmware currently work funny. In multy vm setup I needed to run the first machine with “vagrant up” and then uncomment other two machines to avoid the problem being stuck on assigning address or key generation. and yes….I’m playing with this so.. ;-) “Vagrant” File # -*- mode: ruby -*- # vi...