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| nvucinic | hi guys, anyone here? :) have some questions about cloud-init | 09:28 |
|---|---|---|
| harmw | so, I've specified the EXTERNAL_DHCPC=y thingy in buildroot.config, but it still doesn't execute /sbin/ifupdown | 10:34 |
| harmw | and calling /sbin/ifupdown directly complains about unknown mappings | 10:34 |
| harmw | so prhaps I should take the easy route afterall, and just change udhcpc to /sbin/bla :p | 10:34 |
| nvucinic | helo, i have instaled cloud-init on my centos machine, and i am stuck now. | 10:41 |
| nvucinic | it's some strange configuration with centos on hyperv | 10:42 |
| harmw | in which way are you stuck :) | 10:42 |
| nvucinic | is there any chance i could add cloud-init config file over mounted disk or url ? | 10:42 |
| nvucinic | well i dont really know what to do now :) | 10:42 |
| nvucinic | i want to specify configuration to run at machine boot | 10:42 |
| nvucinic | one time | 10:42 |
| nvucinic | i know what i want in cloud-config and how to define it | 10:43 |
| harmw | you have an amazone-like api machine setup? | 10:43 |
| harmw | like openstack, cloudstack | 10:43 |
| nvucinic | i have default installation from yum packet manager on centos | 10:43 |
| nvucinic | so, that would be - no | 10:43 |
| harmw | ah | 10:43 |
| harmw | cloud-init is used to configure cloud images | 10:43 |
| harmw | and basically, that requirs a metadata service in your network | 10:43 |
| harmw | - the web url you mentioned | 10:44 |
| harmw | to download the config from | 10:44 |
| harmw | usualy lives at http://169.254.169.254/ | 10:44 |
| nvucinic | ah | 10:44 |
| nvucinic | ok, is there any way to conigure metadata service only ? | 10:44 |
| nvucinic | i deploy instances in "cloud" manner | 10:45 |
| nvucinic | hmm... maybe i could get some layer in front of hyperv ? | 10:45 |
| harmw | just make sure there is a metadata api accessible at that ip, and make sure your vm is able to reach it :) | 10:45 |
| nvucinic | ok, but how to install // configure metadata api ? | 10:46 |
| nvucinic | it's part of openstack right ? | 10:46 |
| harmw | btw, cloud-init can also use configdrive - eg. put the json config on a usb stick (well, image) and add that to the vm | 10:46 |
| harmw | yea | 10:46 |
| harmw | or any other cloud platform | 10:46 |
| harmw | depending on your environment, you could also script something yourself | 10:47 |
| harmw | afaik, using configdrive would be sufficient for environments that lack a metadata service - like yours | 10:47 |
| nvucinic | great | 10:48 |
| harmw | hm, just don't know since whn cloud-init supports it... | 10:49 |
| nvucinic | this was very helpful | 10:49 |
| paresh | hey my cloud-init process is not able to get user-data file on my aws setup | 10:49 |
| harmw | why not :) | 10:49 |
| paresh | 2014-02-12 16:16:13,268 - util.py[DEBUG]: Writing to /var/lib/cloud/instances/i-xxxxxxx/user-data.txt - wb: [384] 0 bytes | 10:49 |
| paresh | it says 0 bytes downloaded | 10:49 |
| harmw | indeed it does | 10:49 |
| nvucinic | do i need to setup something extra for configdrive? | 10:49 |
| harmw | readthdocs.org :) | 10:50 |
| harmw | about it format | 10:50 |
| harmw | docs.openstack.org/user-guide/content/config-drive.html | 10:51 |
| nvucinic | yeah, find it | 10:51 |
| harmw | great :) | 10:51 |
| nvucinic | http://developer.openstack.org/api-ref.htmlext_config_drive.html not working :| | 10:52 |
| harmw | paresh: you could try curl on the user-data url from within the instance | 10:52 |
| harmw | http://docs.openstack.org/user-guide/content/enable_config_drive.html | 10:53 |
| harmw | nvucinic: I think you should be able to use that | 10:53 |
| smoser | nvucinic, you can use the 'nocloud' datasource, and 'seed_from' to probably accomplish what you want. | 14:05 |
| smoser | or you could configure on the disk the url to the ec2 mtadata service and then stand something like that up. | 14:05 |
| smoser | nvucinic, http://bazaar.launchpad.net/~cloud-init-dev/cloud-init/trunk/view/head:/doc/examples/cloud-config-datasources.txt | 14:06 |
| smoser | that shows how to configure 'NoCloud' to give it a 'seedfrom' | 14:06 |
| smoser | then just stand something up there with user-data nd meta-data as described in | 14:07 |
| smoser | http://bazaar.launchpad.net/~cloud-init-dev/cloud-init/trunk/files/head:/doc/examples/seed/ | 14:07 |
| smoser | you can also pass the seedfrom informatoin on the kernel cmdline if you had easier access to that. | 14:07 |
| nvucinic | smoser: great, thank you | 14:09 |
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| smoser | harmw, what complains about unknown mappings ? | 15:08 |
| smoser | your patch surely seemed sane to me. | 15:08 |
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| harmw | nah, forget it :) | 16:05 |
| harmw | its almost done, Ill push the last bits tonight | 16:05 |
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| harmw | smoser: https://code.launchpad.net/~harmw/cirros/udhcpc-wrapper | 19:37 |
| harmw | ive had to build this patchd into my updated buildroot env, since thats the one that builds on CentOS | 19:38 |
| harmw | though it should compile without issues on ubuntu | 19:39 |
| harmw | so: https://code.launchpad.net/~harmw/cirros/udhcpc-wrapper/+merge/229114 | 19:44 |
| smoser | harmw, seems odd you'd have to set that. | 19:48 |
| smoser | CONFIG_FEATURE_IFUPDOWN_EXTERNAL_DHCP | 19:48 |
| smoser | since i thought previously we were running ghrough that code | 19:48 |
| smoser | in order to get udchpc invoked with the options | 19:48 |
| harmw | there is a big if EXTERNAL_BLABLA around the part that decides which dhcp client to run | 19:51 |
| harmw | it's N by default | 19:51 |
| smoser | so how does udchpc run in 0.3.2 ? | 20:00 |
| smoser | that seems "external" :) | 20:00 |
| harmw | please check out static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd, execfn *exec) in ifupdown.c | 20:02 |
| harmw | it ends with: | 20:02 |
| harmw | return execute("udhcpc " UDHCPC_CMD_OPTIONS " -p /var/run/udhcpc.%iface%.pid " | 20:02 |
| harmw | and before that function is the stuff that concerns CONFIGURE_FEATURE_IFUPblablabla | 20:03 |
| harmw | this all revolvs around L575 :) | 20:04 |
| smoser | ah. ok. | 20:12 |
| smoser | i believe you | 20:12 |
| smoser | :) | 20:12 |
| smoser | harmw, that looks really nice. | 20:16 |
| smoser | actually.. | 20:17 |
| smoser | it looks to me like its busted for non-eth0 | 20:17 |
| smoser | as when busybox calls us, it will set that in the environment i presume | 20:17 |
| smoser | but then you override it by reaading /etc/default/udchppc | 20:17 |
| smoser | and also i don tlike the global 'DISABLED' | 20:17 |
| harmw | you dont? | 21:12 |
| harmw | and that interface... hm, I suppose I shouldve paid a little more attention to that | 21:12 |
| harmw | ill just remove that from the config file :) | 21:12 |
| harmw | and disabled as well, if you dont like it | 21:13 |
| harmw | ah, so | 22:28 |
| harmw | commnting between watching netflix isn't very wise either :p | 22:29 |
| harmw | smoser: udhcpc uses eth0 by default | 22:29 |
| harmw | so using a config file to make it changable for whatever reason shouldn't be a problem | 22:29 |
| harmw | so, we can configure on which interface we want it to acquire an address | 22:31 |
| harmw | and udhdpc will in turn set $interface with the interface it got an adress from/on | 22:31 |
| harmw | http://git.busybox.net/busybox/tree/networking/udhcp/README.udhcpc?h=1_1_stable&id=179f41778880d0a233435f5c9ed04e17316f479a#n73 | 22:32 |
| harmw | whats wrong with DISABLED, or is there some other easier way of saying 'no, please move on and leave me without an address!'? | 22:34 |
| smoser | harmw, hm.. | 23:47 |
| smoser | i was thinking when someone types: | 23:47 |
| smoser | ifup eth0 | 23:47 |
| smoser | and /etc/networking/interfaces says to bring eth0 up as dhcp | 23:47 |
| smoser | then 'ifup' invokes cirros-dhcpc | 23:48 |
| smoser | as: | 23:48 |
| smoser | cirros-dhcpc up | 23:48 |
| smoser | i assumed it somehow conveyed which interface should be brought up | 23:48 |
| smoser | harmw, yeah, so our command there (line 33 of https://code.launchpad.net/~harmw/cirros/udhcpc-wrapper/+merge/229114) | 23:50 |
| smoser | needs to : | 23:50 |
| smoser | cirros-dhcpc up %iface% | 23:51 |
| smoser | at least. and can't see why not put in some othe other things avialalbe (like leasetime). | 23:51 |
| smoser | then, when cirros-dhcpc calls udhcpc it will pass on the provided %iface. | 23:52 |
| smoser | i suspect then that udhcpc then stuffs that interface into the environment | 23:52 |
| smoser | and we'll be able to expect it in environment on renew|bound | 23:52 |
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