cumulus-basics

Today finally I have managed to get a very basic cumulus setup. It is annoying because I tried several months ago and found some issues with libvirt (and I opened a ticket but didnt follow up) and gave up.

Now it works. I just want to use KVM-QEMU and Vagrant, that I have already installed in my system. So based on the link, I just created a folder and copied the vagrant file. Then “vagrant up” and wait.

/cumulus/1s2l$ vagrant up
Bringing machine 'spine01' up with 'libvirt' provider…
Bringing machine 'leaf01' up with 'libvirt' provider…
Bringing machine 'leaf02' up with 'libvirt' provider…
==> leaf01: Box 'CumulusCommunity/cumulus-vx' could not be found. Attempting to find and install…
leaf01: Box Provider: libvirt
leaf01: Box Version: 4.2.0
==> leaf01: Loading metadata for box 'CumulusCommunity/cumulus-vx'
leaf01: URL: https://vagrantcloud.com/CumulusCommunity/cumulus-vx
==> leaf01: Adding box 'CumulusCommunity/cumulus-vx' (v4.2.0) for provider: libvirt
leaf01: Downloading: https://vagrantcloud.com/CumulusCommunity/boxes/cumulus-vx/versions/4.2.0/providers/libvirt.box
Download redirected to host: d2cd9e7ca6hntp.cloudfront.net
==> leaf01: Successfully added box 'CumulusCommunity/cumulus-vx' (v4.2.0) for 'libvirt'!
==> spine01: Box 'CumulusCommunity/cumulus-vx' could not be found. Attempting to find and install…
spine01: Box Provider: libvirt
spine01: Box Version: 4.2.0
==> leaf01: Uploading base box image as volume into Libvirt storage…
==> spine01: Loading metadata for box 'CumulusCommunity/cumulus-vx'
spine01: URL: https://vagrantcloud.com/CumulusCommunity/cumulus-vx
Progress: 0%==> spine01: Adding box 'CumulusCommunity/cumulus-vx' (v4.2.0) for provider: libvirt
Progress: 0%==> leaf02: Box 'CumulusCommunity/cumulus-vx' could not be found. Attempting to find and install…
leaf02: Box Provider: libvirt
leaf02: Box Version: 4.2.0
Progress: 1%==> leaf02: Loading metadata for box 'CumulusCommunity/cumulus-vx'
leaf02: URL: https://vagrantcloud.com/CumulusCommunity/cumulus-vx
==> leaf02: Adding box 'CumulusCommunity/cumulus-vx' (v4.2.0) for provider: libvirt
==> leaf01: Creating image (snapshot of base box volume).
==> spine01: Creating image (snapshot of base box volume).
==> leaf02: Creating image (snapshot of base box volume).
==> leaf01: Creating domain with the following settings…
==> leaf01: -- Name: 1s2l_leaf01
==> leaf02: Creating domain with the following settings…
==> spine01: Creating domain with the following settings…
==> leaf02: -- Name: 1s2l_leaf02
==> spine01: -- Name: 1s2l_spine01
==> leaf01: -- Domain type: kvm
==> leaf02: -- Domain type: kvm
==> spine01: -- Domain type: kvm
==> leaf01: -- Cpus: 1
==> leaf02: -- Cpus: 1
==> spine01: -- Cpus: 1
==> leaf01: -- Feature: acpi
==> leaf02: -- Feature: acpi
==> spine01: -- Feature: acpi
==> leaf01: -- Feature: apic
==> leaf01: -- Feature: pae
==> leaf01: -- Memory: 768M
==> leaf02: -- Feature: apic
==> spine01: -- Feature: apic
==> spine01: -- Feature: pae
....
....

You can check the VMs are up:

/cumulus/1s2l$ vagrant status
Current machine states:
spine01 running (libvirt)
leaf01 running (libvirt)
leaf02 running (libvirt)
This environment represents multiple VMs. The VMs are all listed
above with their current state. For more information about a specific
VM, run vagrant status NAME.
/cumulus/1s2l$

And we can login and create some network interfaces as per documentation:

/cumulus/1s2l$ vagrant ssh leaf01
Linux leaf01 4.19.0-cl-1-amd64 #1 SMP Cumulus 4.19.94-1+cl4u5 (2020-07-10) x86_64
Welcome to Cumulus VX (TM)
Cumulus VX (TM) is a community supported virtual appliance designed for
experiencing, testing and prototyping Cumulus Networks' latest technology.
For any questions or technical support, visit our community site at:
http://community.cumulusnetworks.com
The registered trademark Linux (R) is used pursuant to a sublicense from LMI,
the exclusive licensee of Linus Torvalds, owner of the mark on a world-wide
basis.
vagrant@leaf01:mgmt:~$ net add interface swp1,swp2,swp3
vagrant@leaf01:mgmt:~$ net commit
--- /etc/network/interfaces 2020-07-15 01:15:58.000000000 +0000
+++ /run/nclu/ifupdown2/interfaces.tmp 2020-10-31 14:12:30.826000000 +0000
@@ -5,15 +5,24 @@
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet dhcp
vrf mgmt
+auto swp1
+iface swp1
+
+auto swp2
+iface swp2
+
+auto swp3
+iface swp3
+
auto mgmt
iface mgmt
address 127.0.0.1/8
address ::1/128
vrf-table auto
net add/del commands since the last "net commit"
User Timestamp Command
------- -------------------------- --------------------------------
vagrant 2020-10-31 14:12:27.070219 net add interface swp1,swp2,swp3
vagrant@leaf01:mgmt:~$

And after configuring the interfaces in the three VMs, we have LLDP working:

/cumulus/1s2l$ vagrant ssh leaf01
Linux leaf01 4.19.0-cl-1-amd64 #1 SMP Cumulus 4.19.94-1+cl4u5 (2020-07-10) x86_64
Welcome to Cumulus VX (TM)
Cumulus VX (TM) is a community supported virtual appliance designed for
experiencing, testing and prototyping Cumulus Networks' latest technology.
For any questions or technical support, visit our community site at:
http://community.cumulusnetworks.com
The registered trademark Linux (R) is used pursuant to a sublicense from LMI,
the exclusive licensee of Linus Torvalds, owner of the mark on a world-wide
basis.
Last login: Sat Oct 31 14:12:04 2020 from 10.255.1.1
vagrant@leaf01:mgmt:~$
vagrant@leaf01:mgmt:~$
vagrant@leaf01:mgmt:~$
vagrant@leaf01:mgmt:~$ net show lldp
LocalPort Speed Mode RemoteHost RemotePort
--------- ----- ------- ---------- ----------
swp1 1G Default spine01 swp1
swp2 1G Default leaf02 swp2
swp3 1G Default leaf02 swp3
vagrant@leaf01:mgmt:~$
vagrant@leaf01:mgmt:~$ net show system
Hostname……… leaf01
Build………… Cumulus Linux 4.2.0
Uptime……….. 0:06:09.180000
Model………… Cumulus VX
Memory……….. 669MB
Vendor Name…… Cumulus Networks
Part Number…… 4.2.0
Base MAC Address. 52:54:00:17:87:07
Serial Number…. 52:54:00:17:87:07
Product Name….. VX
vagrant@leaf01:mgmt:~$ exit

So I am happy because now I have something to play with and try to build an MPLS lab with cumulus. At some point I would like to try some quaga/frr lab.

I am pretty sure that in the past, I didnt have to type my password every single time I run a vagrant command….

Ok, we can shutdown the VMs and start the work for the next time:

/cumulus/1s2l$ vagrant halt spine01 leaf01 leaf02
==> leaf02: Halting domain…
==> leaf01: Halting domain…
==> spine01: Halting domain…
/cumulus/1s2l$
/cumulus/1s2l$
/cumulus/1s2l$ vagrant status
Current machine states:
spine01 shutoff (libvirt)
leaf01 shutoff (libvirt)
leaf02 shutoff (libvirt)
This environment represents multiple VMs. The VMs are all listed
above with their current state. For more information about a specific
VM, run vagrant status NAME.
/cumulus/1s2l$