Virsh net-edit: Difference between revisions
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* [[virsh#Commands|virsh]] | * [[virsh#Commands|virsh]] | ||
* [[KVM_Virtual_Networking_Concepts#The_DNS_and_DHCP_Server|Virtual Network Concepts]] | * [[KVM_Virtual_Networking_Concepts#The_DNS_and_DHCP_Server|Virtual Network Concepts]] | ||
* [[Linux_Virtualization_Operations#Virtualization_Host_Network_Operations|Linux Virtualization Operations]] | |||
* [[virsh net-update]] | |||
=Overview= | =Overview= | ||
Used to edit the virtual | Used to edit the configuration of the specified [[KVM_Virtual_Networking_Concepts#Virtual_Network|virtual network]]. | ||
<pre> | <pre> | ||
virsh net-edit <virtual-network-name> | |||
</pre> | </pre> | ||
Configuration changes applied with virsh net-edit modify [[KVM_Virtual_Networking_Concepts#The_DNS_and_DHCP_Server|DNS and DHCP server's (dnsmasq)]] configuration file /var/lib/libvirt/dnsmasq/default.conf. | The command brings the specified network configuration in the default editor, allowing it to be edited: | ||
<pre> | |||
<network> | |||
<name>default</name> | |||
<uuid>49a07631-ea20-4741-89ea-b0faa7b42d19</uuid> | |||
<forward mode='nat'/> | |||
<bridge name='virbr0' stp='on' delay='0'/> | |||
<mac address='52:54:00:15:ef:87'/> | |||
<ip address='192.168.122.1' netmask='255.255.255.0'> | |||
<dhcp> | |||
<range start='192.168.122.2' end='192.168.122.254'/> | |||
</dhcp> | |||
</ip> | |||
</network> | |||
</pre> | |||
Configuration changes applied with virsh net-edit modify the following: | |||
* [[KVM_Virtual_Networking_Concepts#The_DNS_and_DHCP_Server|DNS and DHCP server's (dnsmasq)]] configuration file /var/lib/libvirt/dnsmasq/default.conf. | |||
Changes applied with virsh net-edit won't take effect until the network is destroyed and re-started, which will cause a all guests to lose network connectivity with the host until their network interfaces are explicitly re-attached. If we need to avoid losing connectivity, changes may also be applied with [[virsh net-update]]. | |||
=Operations= | =Operations= | ||
==Modify DHCP Range== | |||
Execute | |||
<pre> | |||
virsh net-edit <virtual-network-name> | |||
</pre> | |||
and modify the following section: | |||
<pre> | |||
... | |||
<dhcp> | |||
<range start='192.168.122.2' end='192.168.122.254'/> | |||
</dhcp> | |||
... | |||
</pre> | |||
Upon save, libvirt will update [[KVM_Virtual_Networking_Concepts#The_DNS_and_DHCP_Server|DNS and DHCP server's (dnsmasq)]] configuration file /var/lib/libvirt/dnsmasq/default.conf. | |||
Latest revision as of 06:02, 19 April 2018
Internal
Overview
Used to edit the configuration of the specified virtual network.
virsh net-edit <virtual-network-name>
The command brings the specified network configuration in the default editor, allowing it to be edited:
<network>
<name>default</name>
<uuid>49a07631-ea20-4741-89ea-b0faa7b42d19</uuid>
<forward mode='nat'/>
<bridge name='virbr0' stp='on' delay='0'/>
<mac address='52:54:00:15:ef:87'/>
<ip address='192.168.122.1' netmask='255.255.255.0'>
<dhcp>
<range start='192.168.122.2' end='192.168.122.254'/>
</dhcp>
</ip>
</network>
Configuration changes applied with virsh net-edit modify the following:
- DNS and DHCP server's (dnsmasq) configuration file /var/lib/libvirt/dnsmasq/default.conf.
Changes applied with virsh net-edit won't take effect until the network is destroyed and re-started, which will cause a all guests to lose network connectivity with the host until their network interfaces are explicitly re-attached. If we need to avoid losing connectivity, changes may also be applied with virsh net-update.
Operations
Modify DHCP Range
Execute
virsh net-edit <virtual-network-name>
and modify the following section:
...
<dhcp>
<range start='192.168.122.2' end='192.168.122.254'/>
</dhcp>
...
Upon save, libvirt will update DNS and DHCP server's (dnsmasq) configuration file /var/lib/libvirt/dnsmasq/default.conf.