Update readme.md

docs/libvirt/readme.md

@@ -3,6 +3,67 @@
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 # libvirt
+## install
+
+```Bash
+$su root
+```
+```Bash
+# dnf install qemu-kvm libvirt virt-install virt-viewer
+```
+```Bash
+for drv in qemu network nodedev nwfilter secret storage interface; do systemctl start virt${drv}d{,-ro,-admin}.socket; done
+```
+
+
+***validate:***
+```Bash
+# virt-host-validate
+```
+> -  *If all virt-host-validate checks return a PASS value, your system is prepared for creating VMs.*
+>    - **see the red hat guide [Chapter 2. Enabling virtualization](https://access.redhat.com/documentation/de-de/red_hat_enterprise_linux/9/html/configuring_and_managing_virtualization/assembly_enabling-virtualization-in-rhel-9_configuring-and-managing-virtualization)** for troubleshooting**
+
+**setupt the virtual NIC**
+- check if it was installed before:
+```Bash
+# ifconfig
+```
+>```
+>enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
+>        inet 192.168.2.100  netmask 255.255.255.0  broadcast 192.168.2.255
+>...
+>```
+
+```Bash
+# sudo nmcli conn add type bridge con-name br0 ifname br0
+# sudo nmcli conn add type ethernet slave-type bridge con-name bridge-br0 ifname enp2s0 master br0
+# sudo nmcli conn up br0
+```
+
+>```
+>Verbindung »br0« (02c66e55-068d-4aca-a03b-1559b32917cd) erfolgreich hinzugefügt.
+>Verbindung »bridge-br0« (0cdcc86e-76dd-48e4-9c94-ebb2b68d7f55) erfolgreich hinzugefügt.
+>Verbindung wurde erfolgreich aktiviert (master waiting for slaves) (Aktiver D-Bus-Pfad: /org/freedesktop/NetworkManager/ActiveConnection/27)
+>```
+- ***we assign an ip:***
+```Bash
+# sudo nmcli conn modify br0 ipv4.addresses "192.168.200.100/24" ipv4.method manual
+# sudo nmcli conn up br0
+```
+>```
+>Verbindung wurde erfolgreich aktiviert (master waiting for slaves) (Aktiver D-Bus-Pfad: /org/freedesktop/NetworkManager/ActiveConnection/28)
+>```
+
+**add a host mapping**
+> - edit the `/etc/hosts` file and add a mapping for our libvirt service
+>```Bash
+>... 
+>192.168.2.100 cc.speedport.ip     # NIC`s main Ip used for this mapping - remember we had range of 100 
+>192.168.200.100 kvm.mapping.com   # mapping for the virtual NIC we just created called br0
+>```
+
+
+
 
 
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