preallocation=metadata – allocates the space required by the metadata but doesn’t allocate any space for the data. This is the quickest to provision but the slowest for guest writes. Read the article: https://www.jamescoyle.net/how-to/181…
model=virtio virtualport_type=openvswitch explained here: https://www.mankier.com/1/virt-instal…
How to fix QEMU KVM virtual machine network configuration through the xml
Issue with a type direct in QEMU KVM network configuration explained
Manual for virt-install command:
https://www.mankier.com/1/virt-install#Networking_Options
How to install QEMU KVM and configure virtual machine in openSUSE 15.4
How to setup and configure OpenvSwitch in Debian 11
The script which will do everything for you: https://github.com/sysadmin-info/openvswitch/blob/main/ovs-debian.sh
Download it to the server, chmod +x ovs-debian.sh and run ./ovs-debian.sh
How to setup and configure OpenvSwitch in openSUSE 15.4
The script which will do everything for you: https://github.com/sysadmin-info/openvswitch/blob/main/ovs-suse.sh
Download it to the server, chmod +x ovs-suse.sh and run ./ovs-suse.sh
Troubleshooting slow network communication or Connection Timeouts in Linux
Commands used:
ifconfig, netstat, ss, ip, ethtool, iperf3
Bandwidth delay product:
https://en.wikipedia.org/wiki/Bandwidth-delay_product
Round Trip Time:
https://en.wikipedia.org/wiki/Round-trip_delay
Detailed ssh configuration with RSA keys explained.
In this video I described ssh configuration and how to generate RSA keys and how to put them into authorized_keys. Step by step explanation.
Script that is doing everything for you:
https://github.com/sysadmin-info/sshd-configurator/blob/main/sshd-config.sh
Genpasswd:
https://github.com/sysadmin-info/sshd-configurator/blob/main/genpasswd