Comments (3)
ginkel
commented on May 23, 2024
3
I am running 2.49.0 and the Accept-header still seems to be broken:
0x0000: 4500 0157 c490 4000 3f06 64e6 0a93 fe02 E..W..@.?.d.....
0x0010: 0a93 fe01 a48c 239a 156c c3a6 729b 3723 ......#..l..r.7#
0x0020: 8018 0230 27ce 0000 0101 080a 6b6c c2da ...0'.......kl..
0x0030: 9b09 2be5 4745 5420 2f6d 6574 7269 6373 ..+.GET./metrics
0x0040: 2048 5454 502f 312e 310d 0a48 6f73 743a .HTTP/1.1..Host:
0x0050: 2031 302e xxxx xx2e xxxx xx2e 313a 3931 .10.xxx.xxx.1:91
0x0060: 3134 0d0a 5573 6572 2d41 6765 6e74 3a20 14..User-Agent:.
0x0070: 5072 6f6d 6574 6865 7573 2f32 2e34 392e Prometheus/2.49.
0x0080: 300d 0a41 6363 6570 743a 2061 7070 6c69 0..Accept:.appli
0x0090: 6361 7469 6f6e 2f6f 7065 6e6d 6574 7269 cation/openmetri
0x00a0: 6373 2d74 6578 743b 7665 7273 696f 6e3d cs-text;version=
0x00b0: 312e 302e 303b 713d 302e 352c 6170 706c 1.0.0;q=0.5,appl
0x00c0: 6963 6174 696f 6e2f 6f70 656e 6d65 7472 ication/openmetr
0x00d0: 6963 732d 7465 7874 3b76 6572 7369 6f6e ics-text;version
0x00e0: 3d30 2e30 2e31 3b71 3d30 2e34 2c74 6578 =0.0.1;q=0.4,tex
0x00f0: 742f 706c 6169 6e3b 7665 7273 696f 6e3d t/plain;version=
0x0100: 302e 302e 343b 713d 302e 332c 2a2f 2a3b 0.0.4;q=0.3,*/*;
0x0110: 713d 320d 0a41 6363 6570 742d 456e 636f q=2..Accept-Enco
0x0120: 6469 6e67 3a20 677a 6970 0d0a 582d 5072 ding:.gzip..X-Pr
0x0130: 6f6d 6574 6865 7573 2d53 6372 6170 652d ometheus-Scrape-
0x0140: 5469 6d65 6f75 742d 5365 636f 6e64 733a Timeout-Seconds:
0x0150: 2031 300d 0a0d 0a .10....
Unfortunately, this breaks all Spring-Boot-based targets...
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HamishWa
commented on May 23, 2024
I have identified an issue related to the Accept header in the outgoing requests for metrics in Prometheus. The current format of the Accept header is as follows:
application/openmetrics-text;version=1.0.0;q=0.5,application/openmetrics-text;version=0.0.1;q=0.4,text/plain;version=0.0.4;q=0.3,*/*;q=2
When using this header with a q=2 value for the wildcard (*/*), the server returns a 406 error. However, when I modify the final "q=2" value to be below 1, the curl request succeeds.
I am seeking guidance on how to adjust the Accept headers in Prometheus to avoid the 406 error. Specifically, I would like to understand the correct format or configuration to ensure successful scraping.
Thank you for your assistance in resolving this issue.
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HamishWa
commented on May 23, 2024
I reverted to the 2.48.1 release to avoid this issue.
#13313
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