[caasp-beta] Changing the IP range docker binds on across the kube cluster

[Liam McCafferty]

Hi Rafael ,

current ip addr on my master node is :


1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:50:56:90:11:94 brd ff:ff:ff:ff:ff:ff
    inet 172.17.1.73/24 brd 172.17.1.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::250:56ff:fe90:1194/64 scope link 
       valid_lft forever preferred_lft forever
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
    link/ether 02:42:5d:f5:33:db brd ff:ff:ff:ff:ff:ff
    inet 172.18.0.1/16 scope global docker0
       valid_lft forever preferred_lft forever
4: flannel0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1472 qdisc pfifo_fast state UNKNOWN group default qlen 500
    link/none 
    inet 172.20.84.0/16 scope global flannel0
       valid_lft forever preferred_lft foreve

issue is 172.18 and 172.20 are both routeable on our network, 

We have had many issues with docker before which were caused by the default network bindings.


________________________________________
From: Rafael Fernández López <rfernandezlopez at suse.com>
Sent: 08 May 2017 11:12
To: Liam McCafferty; caasp-beta at lists.suse.com
Subject: Re: [caasp-beta] Changing the IP range docker binds on across the kube cluster

Hello Liam,

The cluster CIDR uses 172.20.0.0/16 by default.

Docker defaults to 172.17.0.0/16 by default.

None of them are in the 127.18.0.0/16 range.

Can you please confirm what is the range that is conflicting with your
organization internal network range so we can take proper action and
register a bug to make this configurable if applies?


Thank you,
Rafael Fernández López.

On 05/07/2017 12:11 PM, Liam McCafferty wrote:
> HI guys,
>
>
> How would you change the bind IP for kube cluster im assuming this cant
> just be done in sysconfig docker. as would need to be changed somewhere
> on the master is there a kube/Suse  way of doing this? unfortunately
> 172.18 range is an actual range we use.
>
>
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