[pve-devel] Regression in ifupdown2 with templates ?

[Daniel Berteaud <daniel@firewall-services.com>]

Hi there. 

I'm running a 5 nodes PVE6 cluster, and I'm using ifupdown2 templating features to create vxlan overlays between my nodes (setup this before the SDN feature went live). Here's a snippet of my /etc/network/interfaces : 

%for i in range(1, 6): 
%for v in range(0, 21): 
auto vxlan${i*100+v} 
iface vxlan${i*100+v} 
vxlan-id ${i*100+v} 
vxlan-mcastgrp 225.20.118.1 
vxlan-physdev enp132s0f0.2018 
bridge-access ${i*100+v} 
%endfor 
%endfor 

auto vmbr0 
iface vmbr0 inet manual 
%for i in range(1, 6): 
bridge-ports glob vxlan${i*100}-${i*100+20} 
%endfor 
bridge-stp off 
bridge-fd 0 
bridge-vlan-aware yes 
bridge-vids 2-4094 


Everything is working fine with ifupdown2-2.0.1-1+pve10 but if I update ifupdown to v 3.0.0-1+pve2, my vxlan aren't created anymore. An ifreload -a outputs these errors : 

root@pve4:~# ifreload -a 
warning: unable to set template lookup path /etc/network/ifupdown2/templates ('NoneType' object is not callable): are you sure 'python-mako'is installed? 
warning: /etc/network/interfaces: line33: vxlan${i*100+v}: unexpected characters in interface name 
error: /etc/network/interfaces: line37: iface vxlan${i*100+v}: invalid syntax '%endfor' 
error: /etc/network/interfaces: line38: iface vxlan${i*100+v}: invalid syntax '%endfor' 
error: /etc/network/interfaces: line44: iface vmbr0: invalid syntax '%endfor' 
warning: vmbr0: error parsing glob expression 'vxlan${i*100}-${i*100+20}' (supported glob syntax: swp1-10.300 or swp[1-10].300 or swp[1-10]sub[0-4].300 
warning: vmbr0: error parsing glob expression 'vxlan${i*100}-${i*100+20}' (supported glob syntax: swp1-10.300 or swp[1-10].300 or swp[1-10]sub[0-4].300 
error: vxlan${i*100+v}: invalid vxlan-id '${i*100+v}' 
warning: vxlan${i*100+v}: invalid use of bridge attribute (bridge-access) on non-bridge stanza 
error: netlink: vxlan${i*100}-${i*100+20}: cannot enslave link vxlan${i*100}-${i*100+20} to vmbr0: interface name exceeds max length of 15 
warning: vmbr0: error parsing glob expression 'vxlan${i*100}-${i*100+20}' (supported glob syntax: swp1-10.300 or swp[1-10].300 or swp[1-10]sub[0-4].300 
error: vmbr0: bridge port vxlan${i*100}-${i*100+20} does not exist 


(yes, python-mako is installed) 

I had to downgrade ifupdown2 on all my nodes to get my network stack back online. 

Is there a regression with templating support in ifupdown2 v3 or has something changed and must be adapted ? 

Cheers, 
Daniel 
-- 


[ https://www.firewall-services.com/ ] 	
Daniel Berteaud 
FIREWALL-SERVICES SAS, La sécurité des réseaux 
Société de Services en Logiciels Libres 
Tél : +33.5 56 64 15 32 
Matrix: @dani:fws.fr 
[ https://www.firewall-services.com/ | https://www.firewall-services.com ]