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Change default tt0 cidr

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Most libvirt installs will already have an interface
utilizing 192.168.124.0/24 network.  This commit
updates default cluster cidr to a 192.168.126.0/24
This commit is contained in:
Michael Gugino
2018-10-03 15:26:59 -04:00
parent bf36c903c5
commit 30b1ae8e49
2 changed files with 5 additions and 5 deletions
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8
docs/dev/libvirt-howto.md
View File

@@ -93,14 +93,14 @@ Next, restart libvirt: `systemctl restart libvirtd`
Finally, if you have a firewall, you may have to allow connections to the
libvirt daemon from the IP range used by your cluster nodes.
The following examples use the default cluster IP range of `192.168.124.0/24` (which is currently not configurable) and a libvirt `default` subnet of `192.168.122.0/24`, which might be different in your configuration.
The following examples use the default cluster IP range of `192.168.126.0/24` (which is currently not configurable) and a libvirt `default` subnet of `192.168.124.0/24`, which might be different in your configuration.
If you're uncertain about the libvirt *default* subnet you should be able to see its address using the command `ip -4 a show dev virbr0` or by inspecting `virsh --connect qemu:///system net-dumpxml default.
Ensure the cluster IP range does not overlap your `virbr0` IP address.
#### iptables
```sh
iptables -I INPUT -p tcp -s 192.168.124.0/24 -d 192.168.122.1 --dport 16509 -j ACCEPT -m comment --comment "Allow insecure libvirt clients"
iptables -I INPUT -p tcp -s 192.168.126.0/24 -d 192.168.124.1 --dport 16509 -j ACCEPT -m comment --comment "Allow insecure libvirt clients"
```
#### Firewalld
@@ -118,7 +118,7 @@ With the name of the active zone, include the source and port to allow connectio
from the IP range used by your cluster nodes.
```sh
sudo firewall-cmd --zone=FedoraWorkstation --add-source=192.168.124.0/24
sudo firewall-cmd --zone=FedoraWorkstation --add-source=192.168.126.0/24
sudo firewall-cmd --zone=FedoraWorkstation --add-port=16509/tcp
```
@@ -161,7 +161,7 @@ This step is optional, but useful for being able to resolve cluster-internal hos
For this example:
```sh
echo server=/tt.testing/192.168.124.1 | sudo tee /etc/NetworkManager/dnsmasq.d/tectonic.conf
echo server=/tt.testing/192.168.126.1 | sudo tee /etc/NetworkManager/dnsmasq.d/tectonic.conf
```
3. `systemctl restart NetworkManager`

2
pkg/asset/installconfig/platform.go
View File

@@ -50,7 +50,7 @@ var (
defaultVPCCIDR = "10.0.0.0/16"
defaultLibvirtNetworkIfName = "tt0"
defaultLibvirtNetworkIPRange = "192.168.124.0/24"
defaultLibvirtNetworkIPRange = "192.168.126.0/24"
defaultLibvirtImageURL = "http://aos-ostree.rhev-ci-vms.eng.rdu2.redhat.com/rhcos/images/cloud/latest/rhcos-qemu.qcow2.gz"
)