# Change Flannel network

**URL:** <https://forums.suse.com/t/change-flannel-network/12365>\
**Category:** SUSE Rancher Prime\
**Created:** [November 13, 2018, 1:23pm UTC](https://forums.suse.com/t/change-flannel-network/12365 "2018-11-13T13:23:39Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![lpaquet](https://avatars.discourse-cdn.com/v4/letter/l/e274bd/32.png) [@lpaquet](https://forums.suse.com/u/lpaquet)\
**Post date:** [November 13, 2018, 1:23pm UTC](https://forums.suse.com/t/change-flannel-network/12365/1 "2018-11-13T13:23:40Z")

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Hi,

Is it possible tochange the default 10.42 network of flannel when creating a cluster within rke (in the add cluster / custom functionnality) ?

Thx,

Ludovic

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**Author:** ![Arnaud](https://avatars.discourse-cdn.com/v4/letter/a/e8c25b/32.png) [@Arnaud](https://forums.suse.com/u/Arnaud)\
**Post date:** [November 28, 2018, 5:27pm UTC](https://forums.suse.com/t/change-flannel-network/12365/2 "2018-11-28T17:27:54Z")

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Hi Ludovic,

Yes, I just tested it in my project.  
For example for a network on **10.244.0.0/16** , in cluster.yml rke file :

```
...
    kube-api:
      ...
      service_cluster_ip_range: 10.244.64.0/18
      ...
    kube-controller:
      ...
      cluster_cidr: 10.244.0.0/16
      service_cluster_ip_range: 10.244.64.0/18
      ...
    kubelet:
      ...
      cluster_dns_server: 10.244.64.10
      ...

```

**service\_cluster\_ip\_range** value is the same for both pods.  
**cluster\_dns\_server: 10.244.64.10** is an arbitrary choice.

Do not forget to clean the data on the etcd before deployment

Regards  
Arnaud

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<div class="post-metadata">

**Author:** ![lpaquet](https://avatars.discourse-cdn.com/v4/letter/l/e274bd/32.png) [@lpaquet](https://forums.suse.com/u/lpaquet)\
**Post date:** [November 28, 2018, 6:14pm UTC](https://forums.suse.com/t/change-flannel-network/12365/3 "2018-11-28T18:14:10Z")

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Thanks Arnaud 🙂