Monitor problem
Hello
I have a web application that has been inaccessible for some time. But when I change the monitor for an HTTP monitor (monitor by default), services are "OK".
What can be the cause of this problem?
version: BIG-IP 11.6.3.2 monitor(which is a problem): HEAD /jboss/CSS_keepalive.txt HTTP/1.0\r\n Connection: Close\r\n\r\n The monitor is working properly before.
-
tcpdump
10.55.X.X.80 > 10.X.X.X.40706: Flags [P.], cksum 0xdd52 (correct), seq 1:163, ack 63, win 114, options [nop,nop,TS val 950819840 ecr 1940015649], length 162: HTTP, length: 162
HTTP/1.1 400 Bad Request Date: Sun, 26 Aug 2018 00:29:00 GMT Server: Apache/2.2.15 (Red Hat) Connection: close Content-Type: text/html; charset=iso-8859-1 in slot1/tmm0 lis=
-curl -vk
GET / HTTP/1.1
User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 OpenSSL/1.0.1l zlib/1.2.3 libidn/0.6.5
Host: 10.55.X.X
Accept: */*
HTTP 1.0, assume close after body
HTTP/1.0 503 Service Unavailable
HTTP/1.0 connection set to keep alive!
Connection: Keep-Alive
Content-Length: 1281
Regards
Hi
Is your web server allowing http 1.0 request ? based on the output it certainty does not look http 1.0 is allowed on the webserver . can you test the below
curl --head --http1.0 and compare it against curl --head