Saturday, 2019-10-12

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openstackgerritMerged zuul/nodepool master: Handle case where nova server is in DELETED state  https://review.opendev.org/68815701:04
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openstackgerritMerged opendev/base-jobs master: Revert "Test the upload-logs-swift test role in base-test"  https://review.opendev.org/68821505:38
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openstackgerritSorin Sbarnea proposed zuul/zuul-jobs master: configure-mirrors: use dnf when needed  https://review.opendev.org/68811807:09
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openstackgerritSorin Sbarnea proposed zuul/zuul-jobs master: configure-mirrors: use dnf when needed  https://review.opendev.org/68811807:18
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openstackgerritSorin Sbarnea proposed zuul/zuul-jobs master: configure-mirrors: add support for centos-8  https://review.opendev.org/68811807:38
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openstackgerritSorin Sbarnea proposed zuul/zuul-jobs master: configure-mirrors: add support for centos-8  https://review.opendev.org/68811807:55
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openstackgerritTobias Henkel proposed zuul/zuul master: Stop falling back to job name for missing url  https://review.opendev.org/55405608:13
openstackgerritSorin Sbarnea proposed zuul/zuul-jobs master: configure-mirrors: add support for centos-8  https://review.opendev.org/68811808:19
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openstackgerritTobias Henkel proposed zuul/zuul master: Stop falling back to job name for missing url  https://review.opendev.org/55405608:29
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fungiroman_g: just replied to your rather detailed ml post, but it's already solved for logs uploaded since late yesterday14:30
roman_gfungi oh, that's nice14:30
roman_gWill then test today or on Monday14:31
roman_gThank you, fungi !14:31
clarkboh I'm replying now too14:31
clarkbroman_g: fwiw what rax is doing is odd but not in contradiction to the rfcs14:31
clarkbparticularly if you don't expect ever server to update as soon as the latest rfcs are published14:32
fungiyeah, entirely allowed by rfc 2616, i quoted the passage in my reply14:32
clarkbfungi: 7230 changes the must to a may14:32
clarkbbut 7230 is only 5 years old (and we don't even have ipv6 everywhere yet so clearly these things move slowly)14:33
roman_gclarkb it's Safari, you know. Not really open source, pardon.14:33
clarkbroman_g: feel free to join us in running firefox :)14:33
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fungior any actual free/libre open-source browser of your choice14:33
roman_gI'm on Firefox on work laptop, but occasionally use Safari from personal laptop.14:33
roman_gI guess if I could send a report to Apple.14:34
fungimy wife has ended up running firefox on her macbook because safari seems to crash, grind to a halt or start consuming 100% of cpu on a variety of websites she frequents14:34
roman_gRFC 7231 section 3.1.2.2 [5] says: "sender that applied the encodings MUST generate a Content-Encoding header field" <- field, not fields14:35
clarkbroman_g: yes but 7230 and 2616 describe how fields with the same name are combined14:35
fungimust generate a field doesn't preclude generating more than one14:36
fungijust that it can't be fewer than one14:36
fungi(i.e., 0)14:36
clarkbif you have more than one they are combined and comma delimited14:36
clarkb2616 requires you do this14:36
clarkb7230 only says you may14:36
clarkb(its odd that they relaxed that, but I'm sure they had their reasons)14:36
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clarkbconsidering firefox and chrom* both exhibit this behavior I'll take it that my reading of the rfc isn't completely wrong14:37
fungiwell, what 2616 really says is that appending the values of each of the headers to a list when parsing them must be treated the same as if they were provided as multiple list values in a single header14:40
fungiand i guess 7230 allows the behavior there to be more ambiguous, for no clear reason i can see14:40
clarkbya 7230 relaxes it a bit14:41
fungiat any rate, seems some browsers don't implement all of rfc 2616, and so we've found a convenient workaround to stop them from hitting bugs around this14:42
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roman_gclarkb thank you for the great solution. And thank you, fungi.14:44
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roman_gIt's very nice to work with you.14:44
clarkbroman_g: https://8e92ab9dbce64be02399-6e69b28122178bb298c7327890cc2dcb.ssl.cf2.rackcdn.com/679132/5/check/build-openstack-releasenotes/97952ec/docs/ was built after the fix merged if you want to test it and inspect headers14:45
clarkbroman_g: mordred tested that for us on his safari install and it seemed to work for him14:45
roman_gYes, found sample links in Gerrit change. Works for me perfectly.14:45
roman_gclarkb This one you have provided above also works.14:46
roman_gGreat job!14:47
clarkbmy best guess for why it happens on some index.html files but not others is it is size related14:49
clarkbif the size is over some threshold they compress if not already gzip compressed14:49
clarkbthis is why the job root index.html passes through as is14:49
clarkb(they are small)14:49
clarkbbut the docs index file is larger14:49
clarkblikely a good heuristic for keeping bw costs down, but need to check content type against more than just gzip14:50
roman_gOriginal html index file is 23469 bytes, zlib-compressed - 5833 bytes, and then that one zlib-compressed with gzip on top of it is 5856 bytes.14:53
roman_gSo actually they are wasting CPU and a bit of bandwidth.14:53
fungiyeah, compressing already-compressed data is rarely a good choice14:54
roman_gI would still report it to Rackspace. The problem is not exclusively on OpenStack account, but affects others.14:55
roman_gAnd to Apple, of course – will try to search for their bug reports form/forum.14:56
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roman_gWho could highlight problem to Rackspace?14:57
roman_gOr has it been agreed that this wouldn't be done?14:57
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fungiif roman_g comes back, or reads scrollback, we have the ability to open trouble tickets but it's not really conducive to more generally reporting bugs we discover in their platform. we've usually had more luck just talking to folks who work on the product, though i don't personally know anyone maintaining the swift deployment there15:10
fungi(noting that this isn't really a bug in their platform, standards-wise, just an interoperability problem with some web browsers)15:11
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fungialso, i'd wager this behavior is being introduced by whatever cdn layer they've added. that's probably where they're applying "web acceleration" techniques like transparently compressing transfers (this is a common feature of web accelerator appliances), so quite likely not actually being done by their swift services directly15:22
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roman_gfungi yes, I've read scrollback, thanks.15:38
roman_gfungi I'd still call a bug an attempt to gzip already zlib'bed data.15:39
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