varnishlog not behaving as expected (by me)

Alex Hooper ahooper at bmjgroup.com
Wed Feb 3 12:41:14 CET 2010


Hi,

It's OK: I'm used to not receiving responses from mailing lists. I have
an unfortunate way of communicating in such forums, I think.

Anyway, having come back to this after a slight hiatus I have noted that
the inclusion of the '-c' flag makes it work as expected.

If I instead include the '-b' flag, it also seems to work as expected
(ie, it doesn't spew output, returns data on backend requests where
tag/regex matched). If I include both -b and -c, it continues to work --
but if I include neither, I get the type of spurious* output I noted
originally, no matter what the combination of tag and regex.

My reading of the man page is that

  varnishlog -o <tag> <regex>

is semantically equivalent to

  varnishlog -b -c -o <tag> <regex>


Either I or the code or the man page would appear to be wrong.

Cheers,

Alex.

* The use of this term may be subjective.


Alex Hooper uttered:
> Hi,
> 
> I'm having a bit of trouble using varnishlog. I am using:
> 
>   /usr/local/bin/varnishlog -o RxURL "^wp-admin$"
> 
> Expecting to see grouped log lines for requests where the RxURL matches
> /^wp-admin$. But the (copious) output I see is like:
> 
>     0 StatAddr     - 59.181.130.123 0 6 1 3 0 0 0 1003 8711
>     0 StatAddr     - 120.28.216.236 0 1 6 11 0 0 0 3864 92763
>     0 StatAddr     - 80.13.50.156 0 754 22 40 0 0 0 7080 0
>     0 StatAddr     - 86.156.98.226 0 0 2 4 0 0 0 1397 9259
>     0 ExpPick      - 1023444941 ttl
>     0 VCL_call     - timeout
>     0 VCL_return   - discard
>     0 ExpKill      - 1023444941 -1263381538
>     0 ExpPick      - 1023444953 ttl
>     0 VCL_call     - timeout
>     0 VCL_return   - discard
>     0 ExpKill      - 1023444953 -1263381538
>     0 ExpPick      - 1023108126 ttl
>     0 VCL_call     - timeout
>     0 VCL_return   - discard
>     0 ExpKill      - 1023108126 -10
>     0 ExpPick      - 1023109753 prefetch
>     0 VCL_call     - prefetch
>     0 VCL_return   - fetch
>     0 Debug        - "Attempt Prefetch 1023109753"
>     0 StatAddr     - 86.156.98.226 0 0 3 5 0 0 0 1750 22988
>     0 StatAddr     - 193.146.115.134 0 12 4 4 0 0 0 708 0
>     0 StatAddr     - 86.156.98.226 0 0 4 6 0 0 0 2103 36115
>     0 StatAddr     - 80.13.50.156 0 754 22 41 0 0 0 7257 0
>     0 StatAddr     - 80.13.50.156 0 754 23 42 0 0 0 7434 0
> 
> 
> '/usr/local/bin/varnishlog' -i RxURL  shows me the requests coming in.
> '/usr/local/bin/varnishlog -i RxURL|grep wp-admin' shows that there are
> generally no requests for wp-admin.
> 
> Am I missing something obvious?
> 
> (varnish-2.0.4 on RHEL 5.4)
> 
> Cheers,
> 
> Alex.


-- 
Alex Hooper                           |  <w> www.bmjpg.com
Operations Team Leader                |  <e> ahooper at bmjgroup.com
BMJ Technology, BMJ Publishing Group  |  <t> +44 20 7383 6049
BMA House, LONDON, WC1H 9JR           |


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