Hi All,
I’m investigating Rancher and have made some progress in understanding the network config, however the docs still seem to be a work in progress. I’ve been able to piece this together:
hostname: hostname
rancher:
console: fedora
docker:
engine: docker-17.05.0-ce
tls: false
network:
interfaces:
bond0:
bridge: br0.10
bridge: br0.40
vlans: 10,40
bond_opts:
downdelay: "100"
lacp_rate: "1"
miimon: "100"
mode: "4"
updelay: "100"
xmit_hash_policy: layer3+4
mtu: 9000
mac=00:11:55:d2:46:80:
bond: bond0
mac=00:11:55:d2:46:81:
bond: bond0
mac=00:11:55:d2:46:83:
bond: bond0
br0.10:
bridge: true
dhcp: false
br0.40:
bridge: true
address: 10.40.0.21/16
pre_up:
- ip addr del 10.40.0.21/16 dev br0.40
- ip addr add 10.40.0.21/16 dev br0.40 broadcast +
eth7:
address: 10.1.0.21/24
gateway: 10.1.0.1
mtu: 9000
dhcp: false
dns:
nameservers:
- 10.1.0.10
- 10.1.0.11
ssh_authorized_keys:
- ecdsa-sha2-nistp521 AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlz...w== erric@hostname
The interfaces are created, I get a bond, a vlan and a bridge interfaces:
bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST> mtu 1500
inet6 fe80::226:55ff:fed2:4681 prefixlen 64 scopeid 0x20<link>
ether 00:26:55:d2:46:81 txqueuelen 1000 (Ethernet)
RX packets 25468 bytes 2840564 (2.7 MiB)
RX errors 0 dropped 414 overruns 0 frame 0
TX packets 509 bytes 60902 (59.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@virt1 ~]# ifconfig bond0.10
bond0.10: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::226:55ff:fed2:4681 prefixlen 64 scopeid 0x20<link>
ether 00:26:55:d2:46:81 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 15 bytes 1138 (1.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@virt1 ~]# ifconfig bond0.40
bond0.40: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::226:55ff:fed2:4681 prefixlen 64 scopeid 0x20<link>
ether 00:26:55:d2:46:81 txqueuelen 0 (Ethernet)
RX packets 2075 bytes 103810 (101.3 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 16 bytes 1180 (1.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@virt1 ~]# ifconfig br0.10
br0.10: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::d4:99ff:fe69:2dc prefixlen 64 scopeid 0x20<link>
ether 02:d4:99:69:02:dc txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 15 bytes 1138 (1.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@virt1 ~]# ifconfig br0.40
br0.40: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.40.0.21 netmask 255.255.0.0 broadcast 0.0.0.0
inet6 fe80::f04b:e2ff:fe7b:2f29 prefixlen 64 scopeid 0x20<link>
ether f2:4b:e2:7b:2f:29 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 19 bytes 1334 (1.3 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
I’m not sure why the MTU isn’t getting set. I’ve tried specifically adding individual interfaces with an MTU setting, for example:
eth4:
mtu: 9000
I have also tried:
mac=de:ad:be:ef:00:01
mtu: 9000
However this doesn’t work either. Any tips/cluebats? Is this possible to do without a pre_up statement? Any tips for reordering this file around?
I was also concerned about the broadcast address not showing properly, however I did see this thread which should take care of things in the next release.