| === harlowja is now known as harlowja_away | ||
| smoser | cn28h, it stops at the first. | 13:44 |
|---|---|---|
| cn28h | aha ok, hm | 13:45 |
| Odd_Bloke | cn28h: You can configure which data sources it will look at, though. | 13:45 |
| smoser | gamename (who is gone), cloud-init doesn't currently "pick" eth0. it starts running when the OS's networking is up. | 13:45 |
| smoser | right, Odd_Bloke you coudl tell cloud-init to not use the openstack, but another entirely. | 13:45 |
| smoser | or you could (i think) tell cloud-init to use the openstack one, but with a different url (ie, not 169.254.169.254, and use a URL you have control of) | 13:46 |
| smoser | those things have to be configured prior to cloud-init running. | 13:46 |
| Odd_Bloke | (I guess you'd also need to skip EC2, as OpenStack provides an EC2-compatible metadata service) | 13:46 |
| smoser | ie, you can't tell cloud-init where to find data in the data that you're providing it. | 13:46 |
| smoser | it unfortunately can't read your mind. | 13:46 |
| smoser | openstack is before EC2 in the order, so that cloud-init will prefer the openstack MD to ec2. | 13:47 |
| smoser | but, yeah, Odd_Bloke you're right. youd' have to tell it not to look ther also. | 13:47 |
| smoser | nk121, you should 'apt-get install pastebinit' | 13:48 |
| smoser | and use pastebinit :) | 13:48 |
| smoser | then i dont have to go to pastebin.com urls and look at all those adds. | 13:48 |
| smoser | er... ads. | 13:48 |
| cn28h | smoser: you mean, there may be a way to configure the openstack datasource to look elsewhere? (that would be great -- I'd been thinking I'd have to actually go subclass the implementation and replace the user data logic) | 13:48 |
| smoser | yeah, that may be configurable | 13:49 |
| smoser | the openstack one is. | 13:49 |
| smoser | er.. the ec2 one is. | 13:49 |
| cn28h | ah, very interesting | 13:49 |
| smoser | or you could use "nocloud" | 13:49 |
| smoser | which is pretty simple also. | 13:49 |
| smoser | you just need a base-url with a 'user-data' and 'meta-data' | 13:49 |
| smoser | harlowja_away, what "archive" format would you want for multipart | 13:50 |
| cn28h | yeah that's an interesting idea -- we *are* using other features like key injection via openstack, but I suppose I can use a shellscript to grab that from the metadata service and stage it.. less elegant but workable | 13:50 |
| smoser | :) | 13:51 |
| smoser | yeah. | 13:51 |
| smoser | cn28h, look at doc/examples/cloud-config-datasources.txt | 13:52 |
| smoser | thats how you confgiure a datasource... the key 'metadata_urls' that you see in Ec2 is also valid for openstack | 13:52 |
| smoser | per my reading of the code | 13:52 |
| smoser | it looks like it reads: | 13:53 |
| smoser | metadata_urls | 13:53 |
| smoser | max_wait | 13:53 |
| smoser | timeout | 13:53 |
| smoser | nk121, i think you're using vivid ? | 13:55 |
| nk121 | smoser: no trusty | 13:56 |
| cn28h | nice, yeah that will be great. Now I just need to think of how to correlate it so I can return the right user data for that instance, hm | 13:57 |
| smoser | right. | 13:57 |
| smoser | that does suck. | 13:57 |
| smoser | you oculd look at source ip | 13:57 |
| smoser | as you should be albe to get the instances ip address | 13:57 |
| smoser | from openstack | 13:57 |
| smoser | that is essentially how the opestnack metadata service works | 13:58 |
| cn28h | ah, yeah that makes sense | 13:58 |
| cn28h | map it backwards by talking to neutron and figuring out which instance has that IP or some such | 13:58 |
| smoser | right. | 14:04 |
| smoser | cn28h, if you do this , it might be somewhat useful generically. | 14:05 |
| smoser | ie, a opensta-ck-metadata-aware proxy | 14:05 |
| cn28h | hm | 14:05 |
| smoser | s/sta-ck/ck/ | 14:05 |
| smoser | fairly simple given openstack admin credentials. | 14:06 |
| smoser | you just take input of a IP address and render the result. | 14:06 |
| smoser | you may even be able to re-use the openstack one.. but that might be difficult | 14:06 |
| cn28h | yeah, I will have to do some digging | 14:06 |
| cn28h | and discussion with the rest of my team -- they may well just tell me it's too crazy for their tastes and thatI need to find a different way ;p | 14:07 |
| cn28h | but it sounds like an interesting possibility | 14:07 |
| cn28h | really it would be nice if the other service currently camping on the user-data field was cloud-init compatible | 14:08 |
| cn28h | because it's just a handful of key-value pairs that could easily be written to a file and read from there instead ... | 14:08 |
| cn28h | but that belongs to a codebase we don't own | 14:09 |
| smoser | cn28h, so... if you're talking to that other service... | 14:09 |
| smoser | tell them they should support mime-multipart and pick out the pieces they're interetsed in | 14:09 |
| smoser | or use cloud-config-archive format (which i woudl admit is less "standardy") | 14:09 |
| smoser | this is waht cloud-init does... it pays attention only to things that are destined for it and ignores other things.t | 14:10 |
| cn28h | yeah, that makes much more sense so that you can share the user data | 14:10 |
| smoser | right. | 14:10 |
| cn28h | maybe I will open a JIRA with a feature request | 14:10 |
| smoser | nk121, i'm not sure what i'm seeing there really... | 14:12 |
| smoser | nk121, /var/log/cloud-init-output.log might hvae more info | 14:12 |
| gamename | Hi. How does cloud-init know which device (e.g. eth0) as the preferred network interface? | 15:54 |
| Odd_Bloke | 14:45:33 < smoser> gamename (who is gone), cloud-init doesn't currently "pick" eth0. it starts running when the OS's networking is up. | 16:20 |
| === alexpilotti_ is now known as alexpilotti | ||
| gamename | Odd_Bloke: Eh? Gone? Is the status showing me offline? Re: the question. Ah, ok. cloud-init is agnostic about the network. It just uses whatever interface comes up. All correct? | 16:29 |
| Odd_Bloke | gamename: You were gone when smoser said that, ~3 hours ago. :) | 16:33 |
| Odd_Bloke | gamename: I believe your conclusion is correct, yes. | 16:33 |
| gamename | Odd_Bloke: Got it. I didn't get the response. Sorry for the confusion. I'll check my client (or change the damn thing). | 16:33 |
| cn28h | smoser: so I had an interesting thought and figured I'd share. If I create a really minimal web app that proxies *locally* I can leave all the heavy lifting in terms of correlation up to openstack because I can just forward requests off to the real thing locally. Then, I can intercept user-data and send that off somewhere else, along with fields I can pull from the metadata service myself to help correlate on the remote end. Should work as | 17:05 |
| cn28h | long as I can guarantee it's up and running before cloud-init runs. | 17:05 |
| === harlowja_away is now known as harlowja | ||
| harlowja | smoser just some simple directory structure would seem like it could replace the whole MIME stuff | 17:32 |
| harlowja | file + directory struture | 17:32 |
| harlowja | ^ is also then easily examinable... | 17:32 |
| === harlowja is now known as harlowja_away | ||
| === harlowja_away is now known as harlowja | ||
| === tennis_ is now known as gamename | ||
| harlowja | smoser https://code.launchpad.net/~harlowja/cloud-init/write-files-fetch-from-somewhere should be fixed up | 22:54 |
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