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| brtknr | strigazi: is it possible to update label after a cluster has already been created? | 10:01 |
|---|---|---|
| strigazi | brtknr: no | 10:02 |
| brtknr | strigazi: okay thanks | 10:02 |
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| brtknr | strigazi: Am I correct in thinking that the magnum repo has many legacy scripts that are no longer supported? | 10:34 |
| openstackgerrit | Piotr Mrowczynski proposed openstack/magnum master: Strip signed certificate https://review.openstack.org/570557 | 10:37 |
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| mago_ | Good afternoon team, I'm using Queens/Magnum, and I see the following error logs from time to time in both the magnum-api and magnum-conductor logs (with debug_connection=100): http://paste.openstack.org/show/722401/ | 11:21 |
| mago_ | I was reading a bit about SQLAlchemy, and found out that the "SELECT 1" query is a pre-ping to check if the connection is valid. One can notice, in this error, that the first pre-ping fails, so a second is issued (probably for a new connection). | 11:22 |
| mago_ | FYI, here is the piece of code in SQLAlchemy dealing with pre-ping : https://github.com/openstack/oslo.db/blob/master/oslo_db/sqlalchemy/engines.py#L70 | 11:22 |
| mago_ | I was wondering if anyone already had to deal with this kind of error message ? They are not blocking (the second connection is OK), in the end Magnum is running fine. But I don't understand why this issue appears only with Magnum, and not the other Openstack services. | 11:23 |
| mago_ | Is there any specificity in the way Magnum handles the connection pool in SQLAlchemy ? (compared to other OpenStack services) Do you have any clue or experience for this error (or for debugging DB connections in general) ? Thanks for reading ! | 11:23 |
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| strigazi | mago_: I haven't seen this before. Can you monitor if the connection tp the db is problematic? We don't anything special in managing the db connections | 12:23 |
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| mago_ | strigazi, thanks for your answer ! the DB is up and running, the other OpenStack services are using it without issues. I can connect to it manually and query the magnum DB. | 12:30 |
| mago_ | I was debugging this morning on the server side. I don't see a connection being dropped / lost on the server side. I currently think the connection is not properly initiated. I'm trying to add more debug on the client side, editing the SQLAlchemy code. I'll let you know what if I find something. I might need to contact the SQLAlchemy team. | 12:33 |
| mago_ | If that rings a bell to anyone by any chance ;) | 12:34 |
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| strigazi | mago_: you can ask in oslo as well | 12:34 |
| mago_ | strigazi, thanks good idea | 12:35 |
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| brtknr | strigazi: How are cluster labels accessed by heat? | 13:57 |
| strigazi | brtknr: they are set in extra_params | 13:58 |
| strigazi | https://github.com/openstack/magnum/blob/master/magnum/drivers/heat/k8s_fedora_template_def.py#L94 | 14:01 |
| strigazi | brtknr: ^^ | 14:01 |
| brtknr | strigazi: so in that example, username, region_name, pods_network_cidr are labels? | 14:05 |
| brtknr | or is it accessed through cluster.labels? | 14:06 |
| brtknr | so cluster.labels.get(label) | 14:06 |
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| brtknr | strigazi: I ask because I am wondering where is the best place to set cgroup_driver arg, currently thinking that "magnum/drivers/heat/template_def.py" is probably the best place inside BaseTemplateDef | 14:12 |
| strigazi | k8s_fedora_template_def.py this is better | 14:12 |
| brtknr | Ah, i was imagining that cgroupdriver would be applicable to both swarm and k8s but ofcourse, we only care about this label for k8s | 14:19 |
| brtknr | strigazi: do you agree? | 14:19 |
| strigazi | brtknr i think is better to go driver by driver | 14:20 |
| strigazi | yes, agree, only k8s for now | 14:20 |
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| openstackgerrit | Spyros Trigazis proposed openstack/magnum master: k8s_fedora: Add disable_cloud_provider label https://review.openstack.org/571190 | 15:16 |
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| openstackgerrit | Merged openstack/magnum master: Strip signed certificate https://review.openstack.org/570557 | 16:06 |
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| brtknr | strigazi: which driver is used by default? k8s_fedora_atomic_v1 or v2? | 16:16 |
| strigazi | k8s_fedora_atomic_v1 there is no k8s v2 | 16:16 |
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| brtknr | strigazi: ah, i got confused with swarm v2 sorry | 16:18 |
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| flwang1 | strigazi: around? what's the real benefit to get the pods under 'default' https://github.com/openstack/magnum/blob/master/magnum/drivers/common/k8s_monitor.py#L45 ? | 18:45 |
| flwang1 | in a real production env, i'm wondering how many user will use 'default' instead of creating more reasonable namespaces like 'prod', 'staging', 'dev', 'test' etc | 18:45 |
| flwang1 | strigazi: my point is, getting only the 'default' namespace pods info to represent the usage/workload of the whole cluster doesn't make much sense, thoughts? | 18:48 |
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| openstackgerrit | Bharat Kunwar proposed openstack/magnum master: Add option to specify Cgroup driver for Kubelet https://review.openstack.org/571583 | 21:54 |
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