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Riccardo Magrini
Asked: 2014-06-19 01:39:18 +0800 CST

Adding two single Cluster Controller to a MaaS Region Controller

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I'd like to realize an infrastructure using Ubuntu 14.04Lts like this:

  • 1 Region Controller (RC), Ubuntu 14.04 Server Edition
  • 2 Cluster Controller(CC), Ubuntu 14.04 Server Edition

MaaS has been installed via Ubuntu ISO and then upgraded using ppa stable, while on two Cluster Controller I've installed only maas-cluster-controller and maas-dhcp maas-dns.

All Servers are on the same network.

When I try to add the two CC on the RC I don't see any pending cluster

enter image description here

I've found this solution Connect cluster controller to the region controller (MaaS) but when I tried to run this command

$: sudo maas-provision install-shared-secret

I've received this error

usage: __main__.py [-h] [-c FILENAME]
                   {atomic-write,customize-config,generate-dhcp-config,install-uefi-config,start-cluster-controller,upgrade-cluster}
                   ...
__main__.py: error: invalid choice: 'install-shared-secret' (choose from u'atomic-write', u'customize-config', u'generate-dhcp-config', u'install-uefi-config', u'start-cluster-controller', u'upgrade-cluster')

I've also found this command on the changelog of MaaS (http://maas.ubuntu.com/docs/changelog.html), the note says that:

"RPC security. As a step towards mutually verified TLS connections between MAAS’s components, 1.7 introduces a simple shared-secret mechanism to authenticate the region with the clusters and vice-versa. For those clusters that run on the same machine as the region controller (which will account for most people), everything will continue to work without intervention. However, if you’re running a cluster on a separate machine, you must install the secret: After upgrading the region controller, view /var/lib/maas/secret (it’s text) and copy it. On each cluster, run: sudo -u maas maas-provision install-shared-secret You’ll be prompted for the secret; paste it in and press enter. It is a password prompt, so the secret will not be echoed back to you. That’s it; the upgraded cluster controller will find the secret without needing to be told."

I've also run that and the error is different

$: sudo -u maas maas-provision install-shared-secret

This utility may only be run as root.

why ???

I've also open this ask some months ago showing the same issue

How to add a new cluster controller to MaaS release 1.7?

I'd like to close that, any suggests to resolve that?

maas

1 Answers

  1. Best Answer

    I've resolved that upgraded MaaS with its own last release and following this procedure.

    - On Region Controller run:

    $: cat /var/lib/maas/secret

    copy the key

    - On Cluster Controller run:

    $: sudo dpkg-reconfigure maas-cluster-controller

    and adding the key copied from Region Controller, then after few second we'll see the new Cluster Controller on MaaS UI.

    enter image description here s

    enter image description here

    enter image description here

    then on UI

    enter image description here

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