Nodes data structure:
```
{
'1' => {
name: 'node1',
id: '1',
ring0: '192.168.0.1',
ring1: '172.16.0.1',
},
'2' => {
name: 'node2',
id: '2',
ring0: '192.168.0.2',
ring1: '172.16.0.2',
},
'3' => {
name: 'node3',
id: '3',
ring0: '192.168.0.3',
ring1: '172.16.0.3',
}
}
```
This structure may be generated by the “corosync_nodes” function with “raw” output type from the several input formats.