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| kklimonda | how can I disable inactivity probe between ovn-controller and ovsdb-server? I know they are supposed to use a socket and not tcp connection, but for that I need to change a couple of things in how kolla-ansible does the deployment, and I'd rather do that later. | 08:37 |
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| kklimonda | also, in our small scale tests I've had to bump raft election timeouts waaay up, right now to 24000 (it was still timeouting at 12000) | 08:41 |
| kklimonda | without that I'd have leaders flap left and right, but I'm unclear on how that would behave in a failure scenario (one of nodes going down for example) | 08:42 |
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| ihrachys | zhouhan: what's "the I-P engine" | 13:14 |
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| ihrachys | oh, incremental processing I guess... | 13:20 |
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| zhouhan | ihrachys: yes | 15:09 |
| ihrachys | zhouhan: I am trying to understand the I-P suggestion you posted for system-id file change. how do I determine which steps may be needed for a new chassis name? or is there some way to generically trigger full resync of all ports etc.? | 15:25 |
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| zhouhan | You need to add a node as input of the en_runtime_data, because you are using it in init_binding_ctx, which is called by rumtime_data_run() and runtime_data_ovs_interface_handler() | 15:34 |
| zhouhan | ihrachys: currently the en_runtime_data node has en_ovs_open_vswitch as input: engine_add_input(&en_runtime_data, &en_ovs_open_vswitch, NULL); | 15:35 |
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| zhouhan | ihrachys: if external-id:xxx in the record changes, the engine will detect, and trigger the runtime_data_run() (because there is no change handler defined for en_ovs_open_vswitch), which fully recomputes the runtime_data. | 15:38 |
| zhouhan | ihrachys: Now you need to add a new node as the input and implement the related member functions of the new node, so that if the file content changes, it would trigger recompute of runtime_data. | 15:39 |
| ihrachys | does the engine proactively call all nodes or there should be some async mechanism to detect file touched? | 15:41 |
| zhouhan | ihrachys: you can refer to "ofctrl_is_connected" as a simple example of how to define a wrapper node in I-P engine and add it as input of runtime_data. | 15:42 |
| zhouhan | ihrachys: that node has only one simple data: a boolean value "connected". | 15:43 |
| zhouhan | The engine traverses the DAG in every main loop iteration. If there is no change on any input node, the engine does nothing. Otherwise, handle the changes. | 15:44 |
| zhouhan | If you define a node, the engine will call the run() function in every iteration. In the run function you need to check if the file content changed and set the node state accordingly. | 15:46 |
| ihrachys | gotcha | 15:56 |
| ihrachys | thanks! | 15:56 |
| zhouhan | np | 15:57 |
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| ihrachys | zhouhan: here's the simplified version that reads system-id-override once: https://patchwork.ozlabs.org/project/ovn/patch/20200918171249.2942477-1-ihrachys@redhat.com/ | 17:15 |
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| zhouhan | thanks ihrachys. I will take a look today. | 17:55 |
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