No worries, happy to share. Answers below. Michael
On Tue, Jul 31, 2018 at 9:49 PM Flint WALRUS <gael.ther...@gmail.com> wrote: > > Hi Michael, > > Oh ok! That config-drive trick was the missing part! Thanks a lot! Is there a > release target for the API vs config-drive thing? I’ll have a look at an > instance as soon as I’ll be able to log into one of my amphora. No I have no timeline for the amphora-agent config update API. Either way, the initial config will be installed via config drive. The API is intended for runtime updates. > > By the way, three sub-questions remains: > > 1°/ - What is the best place to push some documentation improvement ? Patches are welcome! All of our documentation is included in the source code repository here: https://github.com/openstack/octavia/tree/master/doc/source Our patches follow the normal OpenStack gerrit review process (OpenStack does not use pull requests). > 2°/ - Is the amphora-agent an auto-generated file at image build time or do I > need to create one and give it to the diskimage-builder process? The amphora-agent code itself is installed automatically with the diskimage-builder process via the "amphora-agent" element. The amphora-agent configuration file is only installed at amphora boot time by nova using the config drive capability. It is also auto-generated by the controller. > 3°/ - The amphora agent source-code is available at > https://github.com/openstack/octavia/tree/master/octavia/amphorae/backends/agent > isn’t? Yes, the agent code that runs in the amphora instance is all under https://github.com/openstack/octavia/tree/master/octavia/amphorae/backends in the main octavia repository. > > Sorry for the questions volume, but I prefer to really understand the > underlying mechanisms before we goes live with the solution. > > G. > > Le mer. 1 août 2018 à 02:36, Michael Johnson <johnso...@gmail.com> a écrit : >> >> Hi Flint, >> >> Happy to help. >> >> Right now the list of controller endpoints is pushed at boot time and >> loaded into the amphora via config drive/nova. >> In the future we plan to be able to update this list via the amphora >> API, but it has not been developed yet. >> >> I am pretty sure centos is getting the config file as our gate job >> that runs with centos 7 amphora has been passing. It should be in the >> same /etc/octavia/amphora-agent.conf location as the ubuntu based >> amphora. >> >> Michael >> >> >> >> On Tue, Jul 31, 2018 at 10:05 AM Flint WALRUS <gael.ther...@gmail.com> wrote: >> > >> > Hi Michael, thanks a lot for that explanation, it’s actually how I >> > envisioned the flow. >> > >> > I’ll have to produce a diagram for my peers understanding, I maybe can >> > share it with you. >> > >> > There is still one point that seems to be a little bit odd to me. >> > >> > How the amphora agent know where to find out the healthManagers and worker >> > services? Is that because the worker is sending the agent some catalog >> > informations or because we set that at diskimage-create time? >> > >> > If so, I think the Centos based amphora is missing the agent.conf because >> > currently my vms doesn’t have any. >> > >> > Once again thanks for your help! >> > Le mar. 31 juil. 2018 à 18:15, Michael Johnson <johnso...@gmail.com> a >> > écrit : >> >> >> >> Hi Flint, >> >> >> >> We don't have a logical network diagram at this time (it's still on >> >> the to-do list), but I can talk you through it. >> >> >> >> The Octavia worker, health manager, and housekeeping need to be able >> >> to reach the amphora (service VM at this point) over the lb-mgmt-net >> >> on TCP 9443. It knows the amphora IP addresses on the lb-mgmt-net via >> >> the database and the information we save from the compute driver (I.e. >> >> what IP was assigned to the instance). >> >> >> >> The Octavia API process does not need to be connected to the >> >> lb-mgmt-net at this time. It only connects the the messaging bus and >> >> the Octavia database. Provider drivers may have other connectivity >> >> requirements for the Octavia API. >> >> >> >> The amphorae also send UDP packets back to the health manager on port >> >> 5555. This is the heartbeat packet from the amphora. It contains the >> >> health and statistics from that amphora. It know it's list of health >> >> manager endpoints from the configuration file >> >> "controller_ip_port_list" >> >> (https://docs.openstack.org/octavia/latest/configuration/configref.html#health_manager.controller_ip_port_list). >> >> Each amphora will rotate through that list of endpoints to reduce the >> >> chance of a network split impacting the heartbeat messages. >> >> >> >> This is the only traffic that passed over this network. All of it is >> >> IP based and can be routed (it does not require L2 connectivity). >> >> >> >> Michael >> >> >> >> On Tue, Jul 31, 2018 at 2:00 AM Flint WALRUS <gael.ther...@gmail.com> >> >> wrote: >> >> > >> >> > Hi Folks, >> >> > >> >> > I'm currently deploying the Octavia component into our testing >> >> > environment which is based on KOLLA. >> >> > >> >> > So far I'm quite enjoying it as it is pretty much straight forward >> >> > (Except for some documentation pitfalls), but I'm now facing a weird >> >> > and hard to debug situation. >> >> > >> >> > I actually have a hard time to understand how Amphora are communicating >> >> > back and forth with the Control Plan components. >> >> > >> >> > From my understanding, as soon as I create a new LB, the Control Plan >> >> > is spawning an instance using the configured Octavia Flavor and Image >> >> > type, attach it to the LB-MGMT-NET and to the user provided subnet. >> >> > >> >> > What I think I'm misunderstanding is the discussion that follows >> >> > between the amphora and the different components such as the >> >> > HealthManager/HouseKeeper, the API and the Worker. >> >> > >> >> > How is the amphora agent able to found my control plan? Is the >> >> > HealthManager or the Octavia Worker initiating the communication to the >> >> > Amphora on port 9443 and so give the agent the API/Control plan >> >> > internalURL? >> >> > >> >> > If anyone have a diagram of the workflow I would be more than happy ^^ >> >> > >> >> > Thanks a lot in advance to anyone willing to help :D >> >> > >> >> > _______________________________________________ >> >> > OpenStack-operators mailing list >> >> > OpenStack-operators@lists.openstack.org >> >> > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators _______________________________________________ OpenStack-operators mailing list OpenStack-operators@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
