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xorrkaz merged 1 commit into from
Mar 23, 2025
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Document Node Definition that supports a vEOS day0 config #60

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37 changes: 33 additions & 4 deletions node-definitions/arista/veos/README.md
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Expand Up @@ -10,8 +10,37 @@ A valid vEOS image can be downloaded the through Arista support portal. https://

### Notes

This node definition uses recommended values for vEOS instances. However, lowering the DRAM to 1.5GB should theoritically work but YMMV.



This node definition uses recommended values for vEOS instances. However, lowering the DRAM to 1.5GB should theoritically work but YMMV.

> [!IMPORTANT]
> For day0 configuration (`veos_usr.dat` file on ISO drive labeled `ARISTA_CONFIG_DRIVE`) to work, you must boot the QCOW2 image from Arista, allow it to install the full `vEOS-lab.swi` image, touch the file `/mnt/flash/kickstart-config`, then shut the system down. This image will become your base QCOW2 image to load into CML.

* First boot the raw image:

```
...
Data in /mnt/flash/vEOS-lab.swi differs from previous boot image on /mnt/flash.
Saving new boot image to /mnt/flash...
...
localhost login: admin
localhost>en
localhost#bash

Arista Networks EOS shell

[admin@localhost ~]$ sudo cat /mnt/flash/.CloudInitLogs
Execute sudo mount /dev/disk/by-label/ARISTA_CONFIG_DRIVE /tmp/userdata8c9kqk8e
Output:
Erorr : b'mount: /tmp/userdata8c9kqk8e: WARNING: source write-protected, mounted read-only.\n'
Caught exception [Errno 2] No such file or directory: '/mnt/flash/kickstart-config'. Ignoring KVM CloudInit
Execute sudo umount /tmp/userdata8c9kqk8e
Output:
Erorr : b''
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@xorrkaz xorrkaz Mar 23, 2025

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Is this the actual output with "error" misspelled?

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@cmm-cisco cmm-cisco Mar 23, 2025 •
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Yes, that's the actual output from the switch. I'm just showing what it spits out if the file is missing.

CloudInit done !

[admin@localhost ~]$ sudo touch /mnt/flash/kickstart-config
[admin@localhost ~]$ sudo shutdown -h now
```

* [Collapse/Flatten](https://blog.programster.org/qemu-img-cheatsheet#collapse-all-images) image as normal and copy to a new image definition.

60 changes: 47 additions & 13 deletions node-definitions/arista/veos/vEOS.yaml
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@@ -1,24 +1,28 @@
id: vEOS
general:
description: Arista vEOS
description: |-
Arista vEOS.

Username: admin Password: <no-password> / admin
nature: switch
read_only: false
device:
interfaces:
has_loopback_zero: true
physical:
- eth0
- eth2
- eth3
- eth4
- eth5
- eth6
- eth7
- eth9
- eth10
- eth11
- eth12
- eth13
- Ma1
- Et1
- Et2
- Et3
- Et4
- Et5
- Et6
- Et7
- Et8
- Et9
- Et10
- Et11
- Et12
serial_ports: 1
default_count: 5
loopback:
Expand All @@ -45,6 +49,7 @@ sim:
nic_driver: virtio
boot:
timeout: 180
uses_regex: false
inherited:
image:
ram: true
Expand All @@ -61,4 +66,33 @@ inherited:
configuration:
generator:
driver: null
provisioning:
volume_name: ARISTA_CONFIG_DRIVE
media_type: iso
files:
- name: veos_usr.dat
editable: true
content: |-
%EOS-STARTUP-CONFIG-START%
!
no aaa root
!
username admin privilege 15 role network-admin secret 0 admin
!
switchport default mode access
!
logging console debugging
!
hostname inserthostname-here
!
interface Ethernet1
!
interface Management1
!
ip routing
!
end
%EOS-STARTUP-CONFIG-END%
%CLOUDHA-CONFIG-START%
%CLOUDHA-CONFIG-END%
schema_version: 0.0.1
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