Sunday, 2018-02-04

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frippe75bad idea having hostname return FQDN ?? Having issues with sahara not being able to spawn the nodes required by the template. Getting "NoValidHost_Remote: No valid host was found" in nova-conductor. I can create instances via "openstack server create"08:39
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ltosky[m]No valid host was found is a generic error in nova and it may mean a lot of problems09:26
ltosky[m]Maybe not enough resources for all hosts required09:27
ltosky[m]check in the nova-compute logs and see if where the allocation process started, if any node was created and then at some point something failed09:28
ltosky[m]I don't think it's related to DNS though09:28
ltosky[m]yeah, nova related, not sahara related; at that point, sahara is just using heat to create few instances09:31
ltosky[m]there are many help requests about people hitting this (unfortunately) generic error, for example09:32
ltosky[m]https://ask.openstack.org/en/question/107755/no-valid-host-was-found-there-are-not-enough-hosts-available/09:32
ltosky[m]frippe75 ^^09:32
frippe75ltosky[m], thanks for replying! But as I wrote, I can spin up a heat stack that create instances (2 of the using m1.medium). Removing them and recreating my sahara-spark.2.1.0 cluster using 1 master and 1 slave (both m1.medium) gets me the "No valid hosts"09:34
frippe75Cannot see any filtering events telling me why it gets filtered out09:35
frippe75difference between my "heat stack" and the stack from sahara is that the sahara one has cinder volumes. Tried creating the same amount using "openstack volume create" is successful.09:36
ltosky[m]and with volumes created by the heat template?09:36
ltosky[m]raise the debug also for heat and not only for nova09:37
frippe75Ok I will try that!09:54
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frippe75ltosky[m], increasing to debug did just clutter the troubleshooting for me. Went back to looking at sahara config guide for pike and what was actually configured by packstack (pike).  under [keystone_authtoken] the guide states I should have auth_uri and identity_uri configured. But I have auth_uri and auth_url set .... problem?16:17
frippe75This is the error I think is most important during the cluster deploy from sahara-engine.log16:20
frippe75CREATE failed: ResourceInError: resources.spark-master.resources[0].resources.spark-master.resources[0].resources.volume: Went to status error due to "Unknown"16:20
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toskythe double thing on keystone_authtoken is not a problem there, you would see a different error elsewhere16:26
toskyfrom heat you should see the template generated16:27
toskydid you try to create a cluster without attached volumes?16:27
toskyfrippe75: ^^16:27
frippe75will try. This worked right out of the box on newton using packstack and my cluster templates. What's changed is that I build my images using sahara-image-elements and moved to newer version of the spark plugin. But I will try without the volumes if thats possible.16:29
frippe75tosky, ^^^16:30
toskynew deployment, new issues :)16:31
toskyis it latest pike? Deployed with packstack too?16:31
frippe75Error: volumes_size: 0.0 is less than the minimum of 116:34
frippe75Could try switching from cinder type to epemeral16:34
frippe75ephemeral...16:34
frippe75Well I guess it could be initial pike. Deployed from pike-stable.16:34
frippe75I already stumbled on a couple of known issues.. But I was hoping stable meant basic nova/cinder/neutron functionality would be working. Not doing overly fancy things.16:35
toskybut packstack or other ways?16:51
frippe75tosky, yes packstack17:06
frippe75trying to make some changes to my templates. removed them from admin as public and creating them in my user project instead.17:07
frippe75noticed storagelocation is cinder and  volume type is None and not iscsi...17:08
frippe75tusky, not sure but my instances is now in the running state. Let's see if the deploy is a success...17:11
frippe75Think since the error was related to cinder. The template has gotten some new attributes I guess since I create my script (creating the json). Will fire up my old newton install and have a look.17:17
frippe75tosky, do I need to set both is_proxy_gateway=true and assign a floating ip ?18:04
frippe75... for the "Wait for instance accessibility" ?18:06
frippe75I set the gateway but not the floating ip. If floating is mandatory for when using the gateway proxy I guess it could be controlled in the ui.18:07
frippe75I guess the answer was yes.18:12
frippe75in state "preparing"18:12
toskyfrippe75: if is_proxy_gateway is true for some instance, sahara will use it to reach the others18:21
toskyso no, the floating ip it's not needed in that case18:21
openstackgerritJeremy Freudberg proposed openstack/sahara-image-elements master: Revise s3_hadoop  https://review.openstack.org/52299018:21
toskybut you need to ensure that the proxy command (that can be overridden through config) is working properly18:21
frippe75Tosky, well It didn't work without assigning the floating ip to the master as well as tagging it as a proxy gateway.18:23
frippe75Tried without floating and cluster could be reached as part of step318:24
frippe75tosky, Yes! now status is green and the cluster got fully deployed. My old cluster node templates was not complete to be used on pike.18:25
toskyfrippe75: uhm, I don't remember major changes from newton (and ocata) to pike that would make that not working18:39
toskyfrippe75: oh, I misunderstood: do you mean that you added the floating ip only to the node that it's the proxy gateway?18:40
openstackgerritJeremy Freudberg proposed openstack/sahara-image-elements master: Revise s3_hadoop  https://review.openstack.org/52299018:49
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frippe75tosky, exactly only floating ip for the master node. works now, thanks for chatting!18:54
toskythen yes: the proxy node must be reachable from the (sahara) controller19:12
toskyhappy to hear that it's working!19:12
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openstackgerritJeremy Freudberg proposed openstack/sahara-image-elements master: Revise s3_hadoop  https://review.openstack.org/52299020:07
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