On 10/12/22 12:45, David Touzeau wrote:
Hi
We using squid 5.7 after adding ssl-bump we have sometimes several 502
error with extended error ERR_READ_ERROR|WITH_SERVER
1665589818.831 11 192.168.1.13 NONE_NONE/502 192616 OPTIONS
https://www2.deepl.com/jsonrpc?method=LMT_split_text - HIER_NONE/-:-
text/html mac="68:54:5a:94:e7:56" - exterr="ERR_READ_ERROR|WITH_SERVER"
1665589839.288 11 192.168.1.13 NONE_NONE/502 506759 POST
https://pollserver.lastpass.com/poll_server.php - HIER_NONE/-:-
text/html mac="68:54:5a:94:e7:56" - exterr="ERR_READ_ERROR|WITH_SERVER"
1665589719.879 44 192.168.1.13 NONE_NONE/502 506954 GET
https://contile.services.mozilla.com/v1/tiles - HIER_NONE/-:- text/html
mac="68:54:5a:94:e7:56" - exterr="ERR_READ_ERROR|WITH_SERVER"
What does it means.
502 with ERR_READ_ERROR|WITH_SERVER may mean several things
(unfortunately). Given HIER_NONE, I would suspect that Squid could not
find a valid destination for the request. There is a similar recent
squid-users thread at
http://lists.squid-cache.org/pipermail/squid-users/2022-October/025289.html
how can we fix it ?
The first step is to identify what causes these errors.
Can you reproduce this problem at will? Perhaps by trying going to
https://dnslabeldoesnotexist.com mentioned at the above thread? If you
can, consider sharing (a pointer to) a compressed debugging cache.log
from a test box that does not expose any internal secrets, as detailed
at
https://wiki.squid-cache.org/SquidFaq/BugReporting#Debugging_a_single_transaction
HTH,
Alex.
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