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[all][tc][horizon] A web tool which helps administrators in managing openstack clusters


Bah, sent it via my phone and didn't hit reply all.

On 26/08/19 10:55 PM, Jim Rollenhagen wrote:
> Fair points. In case you didn't realize, you only sent this to me, not
> the list :)
>
> // jim
>
>
> On Sat, Aug 24, 2019 at 1:45 AM Adrian Turjak <adriant at catalyst.net.nz
> <mailto:adriant at catalyst.net.nz>> wrote:
>
>
>
>     On 24 Aug. 2019 00:08, Jim Rollenhagen <jim at jimrollenhagen.com
>     <mailto:jim at jimrollenhagen.com>> wrote:
>
>         On Fri, Aug 23, 2019 at 3:21 AM Adrian Turjak
>         <adriant at catalyst.net.nz <mailto:adriant at catalyst.net.nz>> wrote:
>
>             Hello Douglas!
>
>             As someone who has struggled against the performance
>             issues in Horizon I can easily feel your pain, and an
>             effort to making something better is good. Sadly, this
>             doesn't sound like a safe direction, even if for admin
>             only purposes.
>
>             The first major issue is that you connect to the databases
>             of the services directly. That's a major issue, both for
>             long term compatibility, and security. The APIs should
>             always be the main point of contact and the ONLY contract
>             that the services have to maintain. By connecting to the
>             database directly you are now relying on a data structure
>             that can, and likely will change, and any security and
>             sanity checking on filters and queries is now handled on
>             your layer rather than the application itself. Not only
>             that, but your dashboard also now needs passwords for all
>             the databases, and by the sounds of it all the message queues.
>
>             I would highly encourage you to try and work with the
>             community to fix the issues at the API layers rather than
>             bypassing them. We can add better query and filtering to
>             the APIs, and we can work on improving performance if we
>             know the pain points, and this is likely where
>             contributions would be welcome.
>
>             I think we do need an alternative to Horizon, and the
>             ideal solution in my mind is to make a new dashboard built
>             on either React or Vue, with a thin proxy app (likely in
>             Flask) that serves the initial javascript page, and
>             proxies any API requests to the services themselves. The
>             filter issues should made better by implementing more
>             complex filtering in the APIs themselves, and having the
>             Dashboard layer better at exposing those dynamically.
>             React or Vue would do a much better job of dynamically and
>             quickly reloading and querying the services, and it would
>             make the whole experience much nicer.
>
>         Michael Krotscheck did a bunch of work to put CORS config in
>         many API services. Why bother with a proxy when we can
>         continue that? :) 
>
>
>     We deploy our dashboard publically, but our APIs are behind a
>     whitelist only firewall. I bet we're not the only one. So we need
>     the proxy like nature of the dashboard API calls.
>
>     I personally like the idea of the browser able to talk to the APIs
>     directly, but I have a feeling there may be other reasons to avoid
>     that. Not to mention you get a clearer picture of which API calls
>     come from the dashboard. Plus, a proxy via the dashboard app
>     itself (assuming it is deployed near the cluster) won't exactly
>     add much extra to the response time.
>
>     But if we as a community do end up going down this route, we can
>     discuss if we need the app to proxy or not. If not, then really we
>     are just building a pure JavaScript app, but if we do need to
>     proxy, then the proxy layer would still be very simple with the
>     core logic all in the front-end.
>
>
>             The one of the best parts of Horizon was that it was a
>             'dumb' dashboard built around your token. It can be
>             deployed anywhere, by anyone, and only needs access to the
>             cluster to work, no secrets to any database.
>
>             I know this is a huge issue, and we do need to solve it,
>             but I hope we can work on something better that doesn't
>             bypass the APIs, because that isn't a safe solution. :(
>
>             Cheers,
>
>             Adrian Turjak
>
>             On 20/08/19 10:14 PM, Douglas Zhang wrote:
>
>                 Hello everyone,
>
>                 To help users interact with openstack, weâ??re currently
>                 developing a client-side web tool which enables
>                 administrators to manage their openstack cluster in a
>                 more efficient and convenient way. (Since we have not
>                 named it officially yet, Iâ??m going to call it
>                 openstack-admin)
>
>                 *# Introduction*
>
>                 Some may ask, â??Why do we need an extra web-based user
>                 interface since we have horizon?â?? Well, although
>                 horizon is a mature and powerful dashboard, it is far
>                 not efficient enough on big clusters (a simple |list|
>                 operation could take seconds to complete). Whatâ??s
>                 more, its flexibility of searching could not match our
>                 requirements. To overcome obstacles above, a more
>                 efficient tool is urgently required, thatâ??s why we
>                 started to develop openstack-admin.
>
>                 *# Highlights*
>
>                 Comparing with the current user interface,
>                 openstack-admin has following advantages:
>
>                  *
>
>                     *Fast*: openstack-admin gets data straightly from
>                     SQL databases instead of calling standard
>                     openstack API, which accelerates the querying
>                     period to a large extent (especially when weâ??re
>                     dealing with a large amount of data).
>
>                  *
>
>                     *Flexible*: openstack-admin supports the fuzzy
>                     search for any important field(e.g.
>                     display_name/uuid/ip_address/project_name of an
>                     instance), which enables users to locate a
>                     particular object in no time.
>
>                  *
>
>                     *User-friendly*: the backend of openstack-admin
>                     gets necessary messages from the message queue
>                     used by nova, and send them to the frontend using
>                     websocket. This way, not only more realistic
>                     progress bars could be implemented, but more
>                     detailed information could be provided to users as
>                     well.
>
>                 *# Issues*
>
>                 To make this tool more efficient and provide better
>                 support for concurrency, we chose Golang to implement
>                 openstack-admin. As Iâ??ve asked before (truly
>                 appreciate advises from Jeremy and Ghanshyam), a
>                 project written by an unofficial language may be
>                 accepted only if existing languages have been proven
>                 to not meet the technical requirements, so weâ??re
>                 considering re-implementing openstack-admin using
>                 python if we canâ??t come to an agreement on the
>                 language issue.
>
>                 So thatâ??s all. How do you guys think of this project?
>
>                 Thanks,
>
>                 Douglas Zhang
>
>
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