Home / server / Questions

Questions[apache-traffic-server](server)

Martin Hope
Mike Metully
Asked: 2020-07-29 11:42:02 +0800 CST
  • 0

When trying to use Cache Inspector on Apache Traffic Server (8.0.8) while configured for forward proxy caching it seems like it's triggering a recursion when mapping is turned off (required for forward proxy).

-sh-4.2$ curl -v "localhost/myCI"
* About to connect() to localhost port 80 (#0)
*   Trying ::1...
* Connection refused
*   Trying 127.0.0.1...
* Connected to localhost (127.0.0.1) port 80 (#0)
> GET /myCI HTTP/1.1
> User-Agent: curl/7.29.0
> Host: localhost
> Accept: */*
>
< HTTP/1.1 400 Multi-Hop Cycle Detected
< Date: Tue, 28 Jul 2020 18:55:01 GMT
< Server: ATS/8.0.8
< Cache-Control: no-store
< Content-Type: text/html
< Content-Language: en
< Content-Length: 346
< Age: 2
< Connection: keep-alive
<
<HTML>
<HEAD>
<TITLE>Cycle Prohibited</TITLE>
</HEAD>

<BODY BGCOLOR="white" FGCOLOR="black">
<H1>Cycle Prohibited</H1>
<HR>

<FONT FACE="Helvetica,Arial"><B>
Description: Could not process your request for the document
because it would cause an HTTP proxy cycle.  Please check the URL and your
browser's proxy settings.
</B></FONT>
<HR>
</BODY>

my configs:

-sh-4.2$ traffic_ctl config diff
proxy.config.url_remap.remap_required has changed
        Current Value   : 0
        Default Value   : 1
proxy.config.reverse_proxy.enabled has changed
        Current Value   : 0
        Default Value   : 1
proxy.config.http.server_ports has changed
        Current Value   : 80
        Default Value   : 8080 8080:ipv6
proxy.config.http.cache.ignore_server_no_cache has changed
        Current Value   : 1
        Default Value   : 0
proxy.config.http.cache.heuristic_min_lifetime has changed
        Current Value   : 604800
        Default Value   : 3600
proxy.config.http.cache.heuristic_max_lifetime has changed
        Current Value   : 2592000
        Default Value   : 86400
proxy.config.net.connections_throttle has changed
        Current Value   : 3000
        Default Value   : 30000
proxy.config.http_ui_enabled has changed
        Current Value   : 1
        Default Value   : 0
proxy.config.http.cache.required_headers has changed
        Current Value   : 0
        Default Value   : 2
proxy.config.admin.user_id has changed
        Current Value   : <snipped>
        Default Value   : nobody
proxy.config.http.cache.enable_default_vary_headers has changed
        Current Value   : 1
        Default Value   : 0

note: this was occurring before I changed the port from 8080 to 80, I am pretty sure it is supposed to provide myCI on whatever is configured as the port.

note2: traffic_ctl config diff gives all non default config values.

Note3: Remote browser behavior matches localhost curl behavior.

apache-traffic-server
Martin Hope
Yehia A.Salam
Asked: 2016-04-17 04:45:56 +0800 CST
  • 1

I enabled the mod_status module on my Apache 2 installation with Extended Status On. However, when I kept checking the server status page, the Total Access is increasing in a weird way(like 100 every 1 second) although i don't have any traffic going on the server and in the same time the server-status is not showing any requests in the requests listing below. How can I log any http access and see where the traffic is coming from and to what.

enter image description here

apache-2.2 apache-2.4 apache-traffic-server
Martin Hope
ovanes
Asked: 2014-11-07 12:47:32 +0800 CST
  • 0

I am trying to make ATS cache return of my UWSGI Application which currently runs on the same machine as ATS itself.

I don't understand why ATS always forwards my requests to UWSGI and does not cache the results. I use ATS 5.1.1 on ubuntu 14.04 compiled from source and I followed a tutorial described here: http://daemonkeeper.net/735/apache-trafficserver-the-better-web-cache/

Using curl to make a test request, I always receive these diagnostics in the Via header: uScMsSf pSeN:t cCMi p sS

WHich can be decoded with traffic_via to:

Proxy request results:
Request headers received from client:               simple request (not conditional)
Result of Traffic Server cache lookup for URL:      miss (a cache "MISS")
Response information received from origin server:   served
Result of document write-to-cache:                  no cache write performed
Proxy operation result:                             served
Error codes (if any):                               no error
Operational results:
Tunnel info:                                        no tunneling
Cache-type and cache-lookup cache result values:    cache / cache miss (url not in cache)
ICP status:                                         no icp
Parent proxy connection status:                     no parent proxy
Origin server connection status:                    connection opened successfully

Can someone help me understand, why the result is not being cached?

My remap.config:

map http://trafficserver_build:8080 http://127.0.0.1:8888

My cache.config:

url_regex=.* revalidate=10m

My storage.config (default provided):

var/trafficserver 256M

Log requests state:

/opt/ts/bin/traffic_logcat -f /opt/ts/var/log/trafficserver/squid.blog


1415307115.252 0 10.0.3.28 TCP_MISS/200 258 HEAD http://127.0.0.1:8888/ - DIRECT/127.0.0.1 text/html
1415307127.721 0 10.0.3.28 TCP_MISS/200 258 HEAD http://127.0.0.1:8888/ - DIRECT/127.0.0.1 text/html
1415307171.141 0 10.0.3.28 TCP_MISS/200 258 HEAD http://127.0.0.1:8888/ - DIRECT/127.0.0.1 text/html
1415307176.480 0 10.0.3.28 TCP_MISS/200 258 HEAD http://127.0.0.1:8888/ - DIRECT/127.0.0.1 text/html
apache-traffic-server
Martin Hope
Isaac Kwan
Asked: 2012-07-07 20:46:14 +0800 CST
  • 2

I am attempting to configure my Apache Traffic Server to use ECDSA cert/key. However, I got the following error message when connecting with openssl s_client

 routines:SSL23_GET_SERVER_HELLO:sslv 3 alert handshake

and if I attempt to connect it directly with Firefox I am prompted that no common cipher is available.

I am pretty sure that the certs/keys are generated correctly as I was able to establish a connection with the same cert/key with openssl s_server and openssl s_client.

So that makes me wondering if I need to compile ATS specially to make use of ECDSA certificates.

ssl openssl apache-traffic-server