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notmyname | parkerro: yes, there should actually be one entry for each replica of an account. the processing step averages the values it gets | 00:57 |
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ianweller | 23 | 00:58 |
ianweller | oops. | 00:58 |
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vodanh86 | Hello, recently, I start up an Instance and seems problems with Instance host name. | 01:31 |
vodanh86 | ubuntu@(none):~$ <--- Host name is none | 01:31 |
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vodanh86 | do you know why? | 01:34 |
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parkerro | notmyname: which processing step? is the average in the log_processing_data? | 01:48 |
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parkerro | notmyname: think we figured it out, new columns started to show up in summary data | 02:12 |
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uvirtbot` | New bug: #816817 in glance "UnboundLocalError: local variable 'resp_headers' referenced before assignment" [Undecided,New] https://launchpad.net/bugs/816817 | 07:36 |
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HugoKuo__ | does anyone try to upgrade glance ? | 07:45 |
HugoKuo__ | and using exist image db ? | 07:45 |
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alperkanat | hey there.. can someone please help me about this question i've asked at docs.openstack? http://docs.openstack.org/cactus/openstack-object-storage/admin/content/understanding-how-object-storage-works.html#comment-265530993 | 08:27 |
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alperkanat | i can't understand the difference between a device and a partition in terms of openstack since they're almost alike on unix systems.. | 08:32 |
alperkanat | and i can't understand what a ring is composed of despite i've read nearly all the docs for swift | 08:33 |
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alperkanat | it seems like it's composed of storage node devices and partitions but i can't be sure | 08:33 |
alperkanat | for instance i guess we should have at least 3 rings for account, container and objects? | 08:34 |
reidrac | a storage node contains (probably) one zone, with several devices, and partitions assigned to the devices | 08:35 |
nagyz | hm | 08:35 |
nagyz | anyone worked with selinux + openstack? | 08:35 |
alperkanat | but in my understanding, a zone can be anything due to the logic of your app | 08:36 |
reidrac | the zones are used to be sure that a partition is always replicated in a different zone | 08:36 |
alperkanat | and in terms of openstack device is not a unix device like /dev/sdXX | 08:36 |
reidrac | alperkanat: yes, that's true - it can be a datacenter, a whole rack, a single server, etc | 08:36 |
alperkanat | reidrac: yes; that's another part i didn't understand. how can a zone make sure that a partition is always replicated? | 08:37 |
reidrac | the swift guarantees you that a partition will be replicated always into a different zone | 08:37 |
alperkanat | so that means it's replicated for how many zones you have..? then why do we still have to define the replication count? | 08:38 |
reidrac | no, you get as many replicas as you want | 08:38 |
alperkanat | you can have more than one replica on each zone? | 08:39 |
reidrac | the zone idea is used as "point of failure", so you can loss a zone without losing more than one replica | 08:39 |
reidrac | replica? do you mean replicated partitions? yes, as long as they are from a different zone | 08:40 |
reidrac | let's say you have 4 zones, 3 replicas, and n devices (that's not relevant for the example) | 08:40 |
reidrac | you put a file, and it goes into a partition (the files aren't split, btw), inside the ZONE 1 | 08:41 |
reidrac | the you're guaranteed to have 2 copies of that file in zones different than zone 1 | 08:41 |
alperkanat | what is i have 2 zones, 3 replicas? | 08:42 |
alperkanat | s/is/if/ | 08:42 |
reidrac | obviously you can't | 08:42 |
reidrac | the number of zones must be greater or equal to the number of replicas | 08:43 |
reidrac | IMHO the most confusing concept in swift is "partition" because almost everybody assumes properties of a disk partition, and that's not the case | 08:44 |
alperkanat | yes that's another question in my mind | 08:44 |
reidrac | the documentation is probably a little bit dense, but I think it's understandable | 08:45 |
alperkanat | docs use different terms at different parts so that's a bit confusing | 08:45 |
alperkanat | indeed it's | 08:45 |
alperkanat | but you get lots of questions too :) | 08:45 |
alperkanat | i saw parts about moving partitions away but i knew that it means rsync'ing btw partitions | 08:46 |
alperkanat | what i didn't understand is partition power | 08:46 |
alperkanat | what for and how it's used | 08:46 |
reidrac | that's the number of partitions; you set it when you create the ring and it can't be changed | 08:47 |
reidrac | so you need to think the max number of partitions you want to have in you cluster | 08:47 |
alperkanat | afaik hashes are used to locate files without having to consult to a db.. and therefore the partition power could be used i guess | 08:47 |
alperkanat | yes the docs seem to be for rackspace mentioning about 5000 disks (1 TB) with 100 partitions each :) unbelievable.. | 08:48 |
alperkanat | so if i estimated a small number for partition power, would i have serious problems in the future while scaling? | 08:49 |
reidrac | actually it depends on the disks you're using (size, hw failure rate) and the number of zones and replicas | 08:49 |
reidrac | not really, that would mean that in the future you'll have bigger partitions | 08:49 |
reidrac | that may mean more data loss in case of hw failure | 08:50 |
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reidrac | let's say you have 5 zones with 24 disks each one, with 3 replicas; if you loose 3 disks in different zones and they old the 3 copies of a partition, bigger partitions means you lose more data | 08:52 |
reidrac | *hold the 3 copies | 08:52 |
alperkanat | so what happens if i have less partition power? afaik it determines the maximum number of partitions a swift cluster may have.. | 08:53 |
reidrac | less partitions means bigger partitions, as I said | 08:54 |
alperkanat | shouldn't that be the opposite? if i had more partitions that i wouldn't lose data? | 08:54 |
alperkanat | oh i see | 08:54 |
reidrac | more partitions mean more work for replication, but less data loss in the event of a multiple failure | 08:54 |
alperkanat | and how does this approximation affect when we have the max number of machines in our cluster? | 08:55 |
reidrac | anyway, statistics are dependent on your hw (ie. is slightly different using 1TB disks than 3TB disks) | 08:55 |
reidrac | there's no max number of machines, you can add as many nodes as you want | 08:56 |
reidrac | but you can make a wild guess... do you expect to have more than 6 zones? :) | 08:56 |
alperkanat | i always thought zones as data centers for general purpose | 08:57 |
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alperkanat | so i guess not :) | 08:57 |
alperkanat | i think i'll go with 2 zones for starters.. probably different racks | 08:59 |
alperkanat | but i want to make sure that we won't have scaling problems just because i made the wrong approximations.. so trying to understand how each of those parameters we talked about affect swift | 09:00 |
reidrac | you need to read the documentation, if you're going to use the recommended number of replicas (3) you can't have 2 zones | 09:01 |
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alperkanat | is there an easy way of creating 100 partitions per drive and add it to swift? since building the ring you have to "carefully" add each of them with the correct ip, zone and port information.. | 09:24 |
reidrac | the partitions are referred to the ring, it's not related to disk partitions | 09:26 |
alperkanat | ? | 09:26 |
reidrac | I recommend you to follow the instructions to setting up a SAIO cluster and go through the documentation to help you understand how it works | 09:27 |
alperkanat | i did create a small one expanded to 6 vms.. however i didn't understand how disk partitions are not that related to the ring because we obviously specify them with a command like swift-ring-builder <builder_file> add z<zone>-<ip>:<port>/<device_name>_<meta> <weight> | 09:29 |
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uvirtbot` | New bug: #816866 in swift "Domain_remap Web-Index" [Undecided,New] https://launchpad.net/bugs/816866 | 09:31 |
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tadhgred | glance question: I have glance configured to use Swift . I notice that the glance details command spits out the Swift password to stdout. Is this intentional? | 10:00 |
tadhgred | swift://glance:glance:NOTTHEPASSWORD@https://192.168.10.10/auth/v1. | 10:01 |
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anm3rt | Hi! is it correct to ask here a question concerned installation? | 10:21 |
anm3rt | is anybody here? :) | 10:28 |
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TREllis | anm3rt: just ask the question :) | 10:47 |
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anm3rt | TREllis, I try to configure swift and auth (cactus release) - do all according manuals but when try to make swauth_prep - it hanges and seemingly do nothing. Netstat reveals two new connections, no log | 10:59 |
anm3rt | just don`t know where to dig | 11:03 |
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TREllis | anm3rt: paste the swauth_prep command you are running | 11:12 |
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anm3rt | TREllis, swauth-prep -K passwd_with_dash_and_numbers -A http://127.0.0.1:8080/auth/ | 11:14 |
TREllis | anm3rt: try https | 11:15 |
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anm3rt | oh my... | 11:15 |
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TREllis | anm3rt: working? | 11:15 |
anm3rt | tnanks! | 11:15 |
TREllis | np | 11:15 |
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anm3rt | almost :) will check conf now | 11:16 |
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tadhgred | glance question: I have glance configured to use Swift . I notice that the glance details command spits out the Swift password to stdout. Is this intentional? | 12:09 |
tadhgred | swift://glance:glance:NOTTHEPASSWORD@https://192.168.10.10/auth/v1 | 12:10 |
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alperkanat | can someone please tell me what a partition means for openstack? i guess it doesn't correspond to a real disk partition | 12:47 |
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notmyname | alperkanat: for swift? | 12:58 |
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alperkanat | notmyname: yes | 12:59 |
notmyname | alperkanat: a partition is a division of the logical keyspace. objects are mapped to a partition. partitions are assigned to storage volumes (all handled with the ring) | 13:00 |
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alperkanat | notmyname: i shouldn't think partitions as chunks of objects, right? the data is just partitioned into smaller sets without really being split | 13:02 |
notmyname | alperkanat: correct. objects are atomic entities within swift (but it's possible to tie together multiple objects into one larger object with a manifest object) | 13:03 |
alperkanat | hmm so we have another type called manifest object like a container? | 13:04 |
alperkanat | notmyname: can objects be pushed into different partitions despite they're in the same container? (so a container keeps track of partitions?) | 13:05 |
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notmyname | alperkanat: accounts, containers, and objects (ie every entity in swift) are all mapped to the appropriate storage node in the same way (find partition, then find storage volume) | 13:07 |
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notmyname | so yes, objects in a single container are on different partitions | 13:07 |
notmyname | a container is a "higher" level of abstraction than a partition | 13:08 |
notmyname | swift exposes account/container/object to the user and internally uses the partitions to know where to find an entity | 13:08 |
alperkanat | notmyname: thanks for the clarifications -- i've seen your nick at launchpad; i believe you're a dev | 13:08 |
alperkanat | keep up the good work! :) | 13:09 |
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notmyname | alperkanat: for a high-level overview of manifest objects, see http://programmerthoughts.com/openstack/the-story-of-an-openstack-feature/ | 13:09 |
alperkanat | notmyname: i haven't seen any reference to manifest objects in cactus docs.. is it something new in the upcoming release? | 13:10 |
notmyname | no, it's in cactus | 13:11 |
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alperkanat | notmyname: hmm so it's used for large objects? because that's one of the sections i haven't read yet :) | 13:11 |
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alperkanat | i mostly read the deployment details and the logic behind its architecture | 13:12 |
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notmyname | it's the only way in swift to store objects larger than the single-object cap (5GB) | 13:12 |
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alperkanat | yes i'm surprised to see such a difference.. will read more about it but does that mean we will see more types (as in rdbms) as we go? | 13:13 |
notmyname | not sure I follow... | 13:14 |
alperkanat | allright | 13:15 |
alperkanat | thanks! | 13:15 |
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alperkanat | are there any monitoring tools for swift btw? or is it left to sysadm? | 13:16 |
notmyname | alperkanat: it's left to sysadm. we can give guidance on some things to monitor, but there is no built-in monitoring | 13:18 |
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alperkanat | got another question.. afaik we should have at least 3 rings for accounts, objects and containers.. can we have more? if so, what would they be used for? | 13:19 |
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alperkanat | notmyname: i just saw in launchpad tickets that proxy returns 507 headers when a disk is full.. that's why i asked that question.. | 13:20 |
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notmyname | alperkanat: no. one ring for accounts, one for containers, one for objects | 13:20 |
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alperkanat | notmyname: hmm the docs gave me the impression that we could have more rings like custom rings -- so that's why i didn't understand what a ring is really mean to swift | 13:21 |
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notmyname | the ring is the mapping of partition to storage volumes. | 13:22 |
notmyname | for example (pseudo code only): list_of_storage_nodes = ring.lookup(account, container, object) | 13:23 |
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alperkanat | i read that raid is not suggested with swift.. meaning software or hardware raid? | 13:36 |
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alperkanat | i believe it's software raid that's not recommended | 13:37 |
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notmyname | alperkanat: either | 13:41 |
alperkanat | notmyname: what's wrong with hardware raid? | 13:42 |
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notmyname | RAID 5/6 has worst case performance with small, random reads/writes. swift does almost exclusively small, random reads/writes. also, RAID rebuild times for large volumes is unacceptable | 13:43 |
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alperkanat | allright thanks | 13:45 |
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huslage | hardware raid is boring | 15:00 |
Glacee | huslage: indeed | 15:00 |
huslage | and a waste of money in openstack's model | 15:00 |
huslage | and probably slows things down | 15:00 |
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huslage | who at dell wants a pilot customer for their cloud-in-a-box thing? | 15:01 |
Glacee | hehe your interested in that? | 15:01 |
kbringard | if you have the hardware you can get the code for free | 15:01 |
kbringard | it's on github | 15:01 |
huslage | i have a budget, want to buy hardware. | 15:02 |
kbringard | or are you looking for them to send you some demo hardware? | 15:02 |
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huslage | no. i want them to send me hardware that i pay for | 15:02 |
huslage | i don't want free stuff | 15:02 |
huslage | i mean, i do, but not in this instance | 15:02 |
kbringard | haha, fair enough | 15:02 |
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uvirtbot` | New bug: #817032 in glance "glance-control exits with 0 when glance-<server> script is not found" [Undecided,New] https://launchpad.net/bugs/817032 | 15:06 |
huslage | kbringard: i'm building a cloud for a university in canada. we've got a grant for infrastructure. i've prototyped it on existing hardware and now it's time to get the real thing done. | 15:06 |
creiht | alperkanat: We should probably refine the docs to say that parity raid is not recommended | 15:06 |
kbringard | makes sense... I'm sure Dell's thing works well since it'll push their hardware for them | 15:07 |
creiht | you might for example want to use something like raid 10 at the container/account level | 15:07 |
huslage | creiht: to what end? | 15:08 |
kbringard | huslage: I mostly use HP enclosures and they work quite well | 15:08 |
huslage | kbringard: blades? | 15:08 |
kbringard | yessir | 15:08 |
creiht | huslage: for example, we have been testing using SSDs in a raid 10 for just account/container DBs to boost performance at that layer | 15:08 |
huslage | i've never bought into blades for some reason | 15:08 |
huslage | creiht: seems like overkill, but would be ok i guess. | 15:08 |
creiht | raid 10 gives you a little more speed, plus extra redundancy due to having a fewer number of machines storing the container/account dbs | 15:09 |
kbringard | they seem to work well for this... hardwired backplane switch for eth0 and eth1 makes inter-node communication super fast without the need for "extra" switching gear | 15:09 |
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creiht | the container/account db opperations are extremely disk IO bound | 15:09 |
huslage | true kbringard | 15:09 |
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kbringard | but, I've also never tried anything else... that's what I was given so that's what I used, hehe | 15:09 |
huslage | it'd be nice to see diagrams of how people do things. | 15:10 |
kbringard | I'm not allowed to share mine, but I can describe it to you | 15:10 |
huslage | sure | 15:10 |
kbringard | the architecture isn't what's "protected", but the diagrams have a lot of proprietary info in them | 15:10 |
huslage | i think i have a good idea of how to do stuff, but it's always good to hear how people do stuff | 15:11 |
creiht | huslage: by doing this, performance stays good even with very large containers (we tested with 1 billion objects in one container :)) | 15:11 |
huslage | cool | 15:11 |
huslage | creiht: where do you work? | 15:11 |
creiht | huslage: rackspace :) | 15:12 |
huslage | oh that's right | 15:12 |
huslage | you told me that already | 15:12 |
creiht | hehe | 15:12 |
* huslage slow on the uptake | 15:12 | |
alperkanat | creiht: that explains the ssd's you're using on the servers :) i haven't heard much startups having ssd's in their servers :P | 15:13 |
huslage | i dig SSDs | 15:13 |
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creiht | alperkanat: heh... we are still in testing... SSDs are proving to be a bit tempramental | 15:14 |
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creiht | and we wouldn't use SSDs for actual object storage | 15:14 |
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huslage | you must respect the SSD :) | 15:14 |
creiht | either way, even if you don't use SSDs our testing is indicating that it is very worth while running account/container servers separate from object servers | 15:14 |
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alperkanat | i can't believe that account/container servers are more I/O intensive than object servers btw.. in the end the objects are the things you're downloading? | 15:15 |
alperkanat | creiht: most of the docs says rackspace uses all servers on nodes :) i guess that's old story | 15:16 |
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creiht | alperkanat: that is true currently | 15:16 |
creiht | we are still testing | 15:16 |
creiht | but experience so far is indicating that it is better to pull those out | 15:16 |
alperkanat | i see | 15:16 |
creiht | I should update the docs :) | 15:16 |
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alperkanat | creiht: you're taking them out to other zones or just other servers? | 15:17 |
notmyname | creiht: sounds like a swift team problem ;-) | 15:17 |
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creiht | alperkanat: the reason they are so I/O intensive is due to them being small sqlite db's and lots of operations require a hit to the db | 15:17 |
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creiht | alperkanat: to other servers | 15:17 |
creiht | notmyname: lol | 15:17 |
creiht | notmyname: there will always be a little part of swift inside me | 15:17 |
creiht | :) | 15:17 |
huslage | creiht: why are they sqlite dbs? | 15:17 |
huslage | that seems inefficient | 15:18 |
alperkanat | huslage: i think not | 15:18 |
huslage | just curious | 15:18 |
huslage | still haven't done much on the swift side. | 15:18 |
creiht | huslage: well containers/accounts are just listings | 15:18 |
huslage | yeah, true. | 15:18 |
huslage | key-value paris | 15:18 |
huslage | pairs too | 15:18 |
alperkanat | huslage: https://tlohg.wordpress.com/2011/03/31/the-story-of-swift/ | 15:18 |
creiht | which require queries that are good for a db | 15:19 |
creiht | yeah that is a good post from another co-worker | 15:19 |
creiht | sqlite dbs are nice since they are just files | 15:19 |
creiht | we worked out a way to replicate them pretty well | 15:19 |
creiht | and allows us to basically distrbute them accross the entire cluster | 15:19 |
huslage | make sense | 15:20 |
alperkanat | creiht: is segmenting large files into chunks left to the programmer or the client side libraries do it for us? i haven't looked at the libraries yet | 15:20 |
huslage | they are just objects in the system then? | 15:20 |
creiht | alperkanat: currently I don't think the client side libs auto chunk | 15:20 |
notmyname | alperkanat: it's left up to client libraries | 15:20 |
alperkanat | creiht: it's funny though to copy *.gz files around :) rsyncing them automatically would be nice | 15:21 |
creiht | they are able to upload the manifest, and then you can upload the chunks | 15:21 |
creiht | huslage: kinda, they are a special case of objects | 15:21 |
creiht | well that is probably a bad way to describe them | 15:21 |
creiht | there are a lot of similarities | 15:21 |
creiht | alperkanat: are you talking about the rings? | 15:21 |
alperkanat | creiht: this means i have to upload a user's file to a temporary place, split that into chunks and start an upload process which will eventualy result as a latency on user side to get their hands on the uploaded file.. | 15:22 |
alperkanat | creiht: yes | 15:22 |
creiht | alperkanat: yeah we have talked about how we could make that more automatic, but everyone has different ideas how that should be done :) | 15:22 |
creiht | alperkanat: our ops guys generate the rings on one machine, then have a script that pushes the ring out to all the nodes | 15:23 |
notmyname | alperkanat: why not stream it from the user and after X bytes start a new stream? | 15:23 |
alperkanat | creiht: talking about 2 subjects at a time :) for which one are you talking about? splitting into chunks or sending *.gz's around? :) | 15:23 |
creiht | alperkanat: ring files | 15:23 |
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creiht | alperkanat: the swift command line tool will auto chunk a file | 15:24 |
creiht | to see an example of how it can be done | 15:24 |
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alperkanat | creiht: as far as i see you guys suggest to maintain rings on a single machine and distribute it to others.. so i'd make a list of all machines (even the new ones) and rsync the *.gz files - sounds like an easy bash script :P | 15:24 |
creiht | alperkanat: yeah that is pretty much it | 15:25 |
alperkanat | notmyname: not sure about the details | 15:25 |
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notmyname | alperkanat: check out the swift command line tool (like creiht said) for an example of how it could be done client-side | 15:26 |
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alperkanat | creiht: i've read that part of the docs but i'd like to use a client side library (python/php) in order to do it.. | 15:26 |
creiht | alperkanat: yeah the swift command line tool is written in python :) | 15:26 |
alperkanat | :) ops | 15:26 |
alperkanat | creiht: i sometimes forget that it's open source | 15:26 |
creiht | hehe | 15:26 |
creiht | alperkanat: adding auto chunking to the client libraries is on a list, but that list keeps growing :) | 15:27 |
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alperkanat | i thought that cactus is 1.2.x btw but when you download from the link (latest) it's 1.3.x -- the development (diablo) release seems to be 1.4.x? | 15:27 |
alperkanat | creiht: you guys hiring? :p come on you're rackspace! | 15:28 |
creiht | alperkanat: always :) | 15:28 |
mfischer | rackertalent.com | 15:28 |
mfischer | <-- racker | 15:29 |
alperkanat | i hope you guys would migrate to github completely one day :) how sync'd they're (launchpad vs github) btw? | 15:29 |
ttx | notmyname: swift 1.4.2 almost fully released now, pending package copy to release PPA | 15:29 |
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notmyname | ttx: thanks | 15:29 |
alperkanat | creiht: i'm an arch linux guy btw.. do you think there are some ubuntu specific parts in openstack that's hard to maintain for packagers? | 15:30 |
ttx | (in case you want to pimp it in your OSCON talk :) | 15:30 |
alperkanat | i really dislike ubuntu and want to use arch wherever possible | 15:30 |
creiht | alperkanat: for swift, shouldn't be | 15:30 |
creiht | I can't speak for the other projects | 15:30 |
ttx | alperkanat: I don't think there is anything ubuntu-specific anywhere | 15:30 |
alperkanat | hmm ok. for starters i could try swift | 15:30 |
mfischer | what might be "ubuntu specific" ? | 15:31 |
alperkanat | mfischer: init scripts etc.. | 15:31 |
creiht | yeah, people have been making RPMs for all of openstack | 15:31 |
creiht | alperkanat: hah... I think we get bashed by ubuntu how we are currently doing init stuff (in swift) :) | 15:31 |
creiht | or at least debian | 15:32 |
creiht | that part could be better ;) | 15:32 |
alperkanat | :) | 15:32 |
notmyname | creiht: could be /different/ | 15:32 |
notmyname | ;-) | 15:32 |
creiht | lol | 15:32 |
mfischer | I'd be more concerned if there were runtime dependencies on closed-source shared objects, not sure we have that problem | 15:32 |
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mfischer | the other stuff is trivial to port to $DISTRO | 15:32 |
notmyname | mfischer: no | 15:32 |
alperkanat | how sync'd is github and launchpad btw? if i checkout from github, would have i the latest code? | 15:32 |
creiht | alperkanat: swift has very few dependencies, so it should be pretty easy | 15:33 |
notmyname | mfischer: you can also see our (Rackspace Cloud Files) packaging for a starting point https://github.com/crashsite/swift_debian | 15:33 |
alperkanat | creiht: yes i'm gratefull for that | 15:33 |
mfischer | thanks notmyname | 15:33 |
notmyname | alperkanat: I've been doing my best to keep the github mirror up to date. at worst it's only a commit or two behind | 15:33 |
alperkanat | notmyname: good to know that.. any plans for the future to only use one of them? | 15:34 |
huslage | isn't there some sort of post-commit hook in BZR that could sync with github? | 15:34 |
notmyname | alperkanat: there are openstack plans to move to github eventually. for now the swift mirror is "unofficial" | 15:34 |
notmyname | alperkanat: just checked. the github mirror is up to date | 15:35 |
alperkanat | ok thanks | 15:35 |
mfischer | can git truly replicate bzr's history? | 15:35 |
mfischer | just curious as to what we lose if we ever cut over | 15:36 |
notmyname | mfischer: no history is lost | 15:36 |
mfischer | cool | 15:36 |
creiht | mfischer: yeah you can see all the history in the current github mirrors | 15:36 |
huslage | your recruiters at rackspace aren't very good. | 15:37 |
mfischer | I hope GitHub vastly improves their notification system before we fully transition to them | 15:37 |
mfischer | huslage, /msg me your info | 15:38 |
creiht | huslage: heh... umm... I probably shouldn't say anything about that :/ | 15:38 |
huslage | lol | 15:39 |
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wiz561 | hi! i'm new to cloud computing and have some very basic questions about how it all works. is there anybody out there that can help? | 15:46 |
kbringard | wiz561: probably ;-) | 15:47 |
kbringard | generally you can just ask and someone will eventually see it and if they can help will respond | 15:47 |
wiz561 | thanks. i'll give it a shot. I started with eucalyptus but switched to openstack after hearing about canocial moving towards it. i still have unanswered questions... so here we go | 15:48 |
wiz561 | say I have my cloud controller setup and a quad-core node controller. Can I run 8 virtual machines at the same time if I wanted to? A related question is if I have two node controllers, will the load be 'balanced' across both nodes? | 15:49 |
mfischer | the question is not whether they will run, but how well | 15:49 |
mfischer | s/not/rarely/ | 15:50 |
wiz561 | ok, so you can pretty much have a number of virtual machines that aren't dependent on the cores (cpu's). it just will run slowly | 15:50 |
mfischer | subject to memory and disk space, yeah | 15:50 |
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tadhgred | glance question: I have glance configured to use Swift . I notice that the glance details command spits out the Swift password for the glance use to stdout. Is this intentional? | 15:50 |
wiz561 | ok. thanks. so if you have two nodes, will a virtual machine load balance, or take advantage of the second node automatically? | 15:51 |
kbringard | wiz561: yea, as for the balancing, last I recall it chooses compute nodes at random | 15:51 |
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wiz561 | ah, ok. thanks | 15:51 |
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mfischer | wiz561: the compute fabric has no knowledge of the load pattern of its tenants. | 15:51 |
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mfischer | IOW, in a tiny deployment like that, 2 busy tenants could be placed on different compute nodes, or they may, by the luck of the draw, end up on the same node | 15:52 |
alperkanat | if i clone the latest swift do i get swauth? or should i clone swauth or keystone? (is auth server mandatory btw?) | 15:52 |
wiz561 | mfischer: OK. so if I understand you correctly, if the virtual machine utilization is at 100%, it will not distribute that load across other nodes; you're pretty much stuck with it. | 15:53 |
kbringard | generally if I want to test something on a specific compute node I just fire up like 10 instances and generally at least one will land on the node I want, hah | 15:53 |
kbringard | I think the new scheduler has some stuff to help with that though... not resource wise but "capability" wise | 15:53 |
mfischer | wiz561: not automatically, no | 15:54 |
wiz561 | ok, thanks all. next question... if your cloud controller goes down, does the entire cloud goes down? | 15:55 |
kbringard | you could manually remove it from the pool... the VMs will still run, route, etc just no new Vms will be sent there | 15:55 |
mfischer | it should not | 15:55 |
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kbringard | but that's a jankey solution, imo | 15:55 |
mfischer | VMs that are up should stay up | 15:55 |
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kbringard | mfischer wiz561: it should be noted however that if your network controller goes down, they won't route | 15:55 |
creiht | alperkanat: there is a very basic version of auth include in swift | 15:55 |
creiht | tempauth or whatever it is called now | 15:56 |
kbringard | but they will stay up and running, and should start routing again when the network controller comes back | 15:56 |
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mfischer | kbringard: yeah, that scares the bejeezus out of me | 15:56 |
kbringard | haha, indeed | 15:56 |
mfischer | this is for flatDHCP right? | 15:56 |
wiz561 | ok. i think i understand it. i was thinking of having everything on one box and then have the nodes on other boxes. but it sounds like the drawback would be less redundancy if something goes down. it makes sense. | 15:56 |
creiht | alperkanat: it is going to depend on how you are going to want to run it in production to determine what auth to use | 15:56 |
kbringard | there is code that is almost done, iirc, to add HA to the network controller | 15:57 |
kbringard | and there are ways to do it already | 15:57 |
alperkanat | creiht: is it mandatory to have an auth server? (say i want to have a private swift behind a private network that doesn't need an authentication) i believe it's mandatory since it requires tokens | 15:57 |
kbringard | http://unchainyourbrain.com/openstack/13-networking-in-nova | 15:57 |
kbringard | vishy wrote a nice summary of it | 15:57 |
mfischer | that is a really freaking great page BTW | 15:57 |
mfischer | thanks vishy | 15:57 |
kbringard | indeed | 15:57 |
creiht | alperkanat: well the auth middleware is what validates the token, so I think as long as the account is created, you could run without the middleware and run unauthenticated | 15:58 |
mfischer | OpenStack will be all the better for great docs like this, especially if we can centralize them | 15:58 |
wiz561 | i think that pretty much explains everything pretty well for now. i pulled up that link and it looks like there's a lot of info on it other than networking. thank you for the information and answering all my easy questions!! | 15:58 |
kbringard | wiz561: no problem, we like to help | 15:58 |
wiz561 | thanks! | 15:58 |
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alperkanat | creiht: still i need to use u/p which requires authentication? i think unauthenticated requests are rejected by the proxy | 15:59 |
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uvirtbot` | New bug: #817079 in nova "OSAPI v1.1 image create should be a server action" [Undecided,In progress] https://launchpad.net/bugs/817079 | 16:12 |
uvirtbot` | New bug: #817082 in nova "OSAPI v1.1 servers metadata does not match the spec" [Undecided,In progress] https://launchpad.net/bugs/817082 | 16:12 |
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uvirtbot` | New bug: #817107 in nova "Exceptions should be united and exception.wrap_exception should be updated or removed" [Undecided,New] https://launchpad.net/bugs/817107 | 16:51 |
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uvirtbot | New bug: #817115 in swift "swift tool (st) compares an integer-typed object size to a string-typed segment size on upload" [Undecided,New] https://launchpad.net/bugs/817115 | 17:06 |
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uvirtbot | New bug: #817121 in glance "URI parsing still problematic" [High,In progress] https://launchpad.net/bugs/817121 | 17:21 |
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uvirtbot | New bug: #817178 in nova "it is possible to create networks with the same cidr even though logic exists to prevent it" [Undecided,New] https://launchpad.net/bugs/817178 | 19:21 |
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xnyl | what do you guys use to create the images for your cloud ? kvm? what about if you use xenserver as the underlaying hypervisor ? | 20:57 |
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ppushor | Not sure what you mean by create but I am using kvm. It's really a features / preference judgement call. | 21:07 |
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catarrhine | Has anyone tried this: http://deliver.citrix.com/projectolympus what's so special about it exactly? What does it have for a client, is it storage or just hpc? | 21:20 |
uvirtbot | New bug: #817228 in nova "contrib/nova.sh does not work from within a screen" [Undecided,In progress] https://launchpad.net/bugs/817228 | 21:21 |
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ppushor | Project Olympus is simply going to be a bundle of openstack and a pre-configured and tested Xen install together. | 21:44 |
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pdjan | trying swift install on multiple servers, can't seem to get proxy server started. netstat -ntpl shows nothing listening on port 8080, swift tool 'st - A https://xxxx:8080/auth/v1.0 -U system:root -K testpass stat' reports socket.error: Error 111 Connection refused. Any ideas or suggestions? | 21:45 |
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creiht | pdjan: did you check syslog on the server for errors? | 21:46 |
pdjan | creiht: The only error I see in syslog is, proxy-server UNCAUGHT EXCEPTION#012Traceback......... | 21:49 |
creiht | pdjan: can you paste the whole thing to paste.openstack.org? | 21:49 |
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pdjan | creiht: I've been trying multi-server install for few days, and i always get this exception. I must be making some obvious mistake, although I got single server install without any issues following SAIO instructions. Sure I will paste it give me a sec | 21:50 |
creiht | k | 21:50 |
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pdjan | creiht: http://paste.openstack.org/raw/1962/ | 21:55 |
creiht | pdjan: also, what version are you installing and which url for the instructions are you following? | 21:55 |
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creiht | hrm... looks like the traceback is getting truncated | 21:57 |
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creiht | pdjan: can you paste your proxy config? | 21:57 |
pdjan | creiht: newest version swift 1.4.2 on Ubuntu 10.4, following http://swift.openstack.org/howto_installmultinode.html but then I mixed a little with SAIO instructions on the storage nodes | 21:57 |
creiht | k | 21:57 |
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pdjan | http://paste.openstack.org/raw/4PwcCqvoEEMgxKTTizLy/ | 21:59 |
creiht | pdjan: do you have swauth installed in addition to swift? | 22:00 |
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pdjan | creiht: yep | 22:00 |
creiht | k | 22:00 |
creiht | I'm flying a little blind since the whole stacktrace isn't printed | 22:00 |
creiht | but it looks like it is a problem with trying to read the config | 22:01 |
creiht | pdjan: give me a sec to whip up a test | 22:01 |
pdjan | creiht: sure | 22:01 |
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pdjan | creiht: see if this helps, http://paste.openstack.org/raw/1964/ | 22:03 |
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creiht | pdjan: try running this on your proxy node: | 22:04 |
creiht | python -c "from paste.deploy import loadapp; loadapp('config:/etc/swift/proxy-server.conf')" | 22:05 |
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creiht | and see if it returns an error, if so paste that :) | 22:05 |
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uvirtbot | New bug: #817238 in swift "Some exceptions get truncated in the logs" [Undecided,New] https://launchpad.net/bugs/817238 | 22:06 |
pdjan | creiht: http://paste.openstack.org/raw/1965/ | 22:08 |
creiht | ahh... there we go | 22:08 |
creiht | hrm | 22:08 |
pdjan | btw I found same Importerror while running swauth-prep, modified the code to say 'from urlparse import urlparse'. not sure if it helps | 22:09 |
creiht | pdjan: we had to have a custom urlparse to support ipv6 | 22:09 |
creiht | pdjan: so if you open a python shell, can you run: | 22:10 |
creiht | from swift.common.utils import TRUE_VALUES | 22:11 |
creiht | ? | 22:11 |
creiht | just to make sure the swift base stuff is installed | 22:11 |
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pdjan | creiht: previous swauth-prep code was pointing to "from swift.common.utils import urlparse" but I looked utils doesn't have module named urlparse | 22:12 |
pdjan | creiht: sure let me try | 22:12 |
creiht | yeah that is what is confusing me | 22:12 |
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creiht | as it should be there :) | 22:12 |
creiht | pdjan: did you install from packages, or code? | 22:12 |
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pdjan | creiht: yes, I can run the command 'from swift.common.utils import TRUE_VALUES'. I installed using packages "apt-get install swift-proxy" as per multinode instructions | 22:14 |
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creiht | k | 22:14 |
creiht | just wanted to verify | 22:14 |
pdjan | creiht: no worries | 22:15 |
* creiht sighs | 22:18 | |
creiht | pdjan: I think you have 1.2 installed :( | 22:19 |
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creiht | pdjan: run: python -c "import swift; print swift.__version__" | 22:19 |
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pdjan | creiht: really....jeez, yeah. that confirms it | 22:20 |
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creiht | pdjan: ok our ppas are screwed up (again) :( | 22:20 |
pdjan | creiht: how did I get 1.2, I don't understand | 22:20 |
creiht | pdjan: I'm really sorry about this | 22:20 |
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creiht | give me a min to track this down | 22:20 |
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creiht | soren, mtaylor: anyone remember who set the names for all of our ppas for ~core-swift? | 22:21 |
pdjan | creiht: no worries, as long as I get it installed correctly, I really want to understand swift better | 22:21 |
creiht | pdjan: no worries... thanks for your patience | 22:21 |
creiht | pdjan: ok so in those instructions: the repo to add should be: | 22:22 |
creiht | add-apt-repository ppa:swift-core/release | 22:23 |
creiht | instead of /ppa | 22:23 |
creiht | annegentle: -^ | 22:23 |
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creiht | soren, mtaylor: ignore my last request, we'll get the docs changed | 22:24 |
pdjan | creiht: Great, I will give it a try tomorrow and get back with you guys if I see any issues. Thanks for sorting this out : ) | 22:25 |
creiht | pdjan: no problem, and thanks for reporting the issue | 22:25 |
creiht | pdjan: pleaes let me know if it works :) | 22:25 |
pdjan | creiht: Do you recommend re-running the install by adding ppa:swift-core/release or start over or can I do uninstall of swift somehow? | 22:27 |
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creiht | pdjan: not sure actually... my apt-foo isn't that great | 22:30 |
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pdjan | creiht: alright, will let you know how it goes. Thanks | 22:31 |
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creiht | pdjan: I think if you just add the right ppa, then do an apt-get update, apt-get upgrade, that may give you the newer versions | 22:32 |
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vishy | creiht: ttx ... here ... http://wiki.openstack.org/PPAs | 22:42 |
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countspongebob | Anyone at OSCON? | 23:19 |
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uvirtbot | New bug: #817265 in nova "resize exception on xenserver" [Undecided,New] https://launchpad.net/bugs/817265 | 23:31 |
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