Open Stack

On Fri, 27 Mar 2015 23:52:52 +0530, Sayali Lunkad wrote:
>    - *Host not found while launching an instance.* (happens very frequently
>    when they try  to launch the instance for the first time). It normally gets
>    resolved by restarting the compute node or increasing the RAM for compute
>    and then restarting it. I am not sure why this should happen only on some
>    machines though even thought the configuration of  the machines was the
>    same.

This sounds like the controller not realizing that the space for an
instance has been freed (our default config has enough space for only one
instance). If so, just wait a minute or so after deleting all instances,
then it should work.

>    - *HTTP 500 errors*. This is notices frequently after a using the CLI
>    for sometime. After running a few CLI commands this error shows up.

There might be some useful information in the logs when that happens.

>    - *Cluster breaks at horizon repeatedly about 4 times. *As spotted
>    earlier there is a race while osbash tried to setup horizon. It is found
>    that this could be a problem with apache2 server when you start it for the
>    first time. But the root cause is unknown. We should take a look at this as
>    it is happening frequently.

Hopefully fixed by https://review.openstack.org/#/c/168711/.

>    - *Cluster breaks while setting up Nova compute. *The second time the
>    cluster breaks is while setting up nova compute. On checking the logs
>    it is shows that it is unable to fetch some archives. But again I
>    don't see why it would only break at nova compute if it was a problem
>    with the connection.

We pre-download everything into the basedisk so we don't need a network
connection when building the cluster. Only I failed to add a new package
to pre-download when updating the scripts for Juno. Patch forthcoming.

>    - *VMs do not poweroff automatically on windows host. *Bug has been
>    filed for this by one of the attendees.
>    https://bugs.launchpad.net/openstack-training-guides/+bug/1435932

Not sure I understand that bug report. On all operating systems, the
cluster is up and running after the cluster build is finished. You can
log in to shut it down, or you can just power off the node VMs and
restore them to the last snapshot. What am I missing?

Roger