[openstack-dev] [kolla] add service discovery, proxysql, vault, fabio and FQDN endpoints

Florian Engelmann florian.engelmann at everyware.ch
Wed Oct 10 07:18:32 UTC 2018

by "another storage system" you mean the KV store of consul? That's just 
someting consul brings with it...

consul is very strong in doing health checks

Am 10/9/18 um 6:09 PM schrieb Fox, Kevin M:
> etcd is an already approved openstack dependency. Could that be used instead of consul so as to not add yet another storage system? coredns with the https://coredns.io/plugins/etcd/ plugin would maybe do what you need?
> Thanks,
> Kevin
> ________________________________________
> From: Florian Engelmann [florian.engelmann at everyware.ch]
> Sent: Monday, October 08, 2018 3:14 AM
> To: openstack-dev at lists.openstack.org
> Subject: [openstack-dev] [kolla] add service discovery, proxysql, vault, fabio and FQDN endpoints
> Hi,
> I would like to start a discussion about some changes and additions I
> would like to see in in kolla and kolla-ansible.
> 1. Keepalived is a problem in layer3 spine leaf networks as any floating
> IP can only exist in one leaf (and VRRP is a problem in layer3). I would
> like to use consul and registrar to get rid of the "internal" floating
> IP and use consuls DNS service discovery to connect all services with
> each other.
> 2. Using "ports" for external API (endpoint) access is a major headache
> if a firewall is involved. I would like to configure the HAProxy (or
> fabio) for the external access to use "Host:" like, eg. "Host:
> keystone.somedomain.tld", "Host: nova.somedomain.tld", ... with HTTPS.
> Any customer would just need HTTPS access and not have to open all those
> ports in his firewall. For some enterprise customers it is not possible
> to request FW changes like that.
> 3. HAProxy is not capable to handle "read/write" split with Galera. I
> would like to introduce ProxySQL to be able to scale Galera.
> 4. HAProxy is fine but fabio integrates well with consul, statsd and
> could be connected to a vault cluster to manage secure certificate access.
> 5. I would like to add vault as Barbican backend.
> 6. I would like to add an option to enable tokenless authentication for
> all services with each other to get rid of all the openstack service
> passwords (security issue).
> What do you think about it?
> All the best,
> Florian
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EveryWare AG
Florian Engelmann
Systems Engineer
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CH-8003 Z├╝rich

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