subject:"\[squid\-users\] squid cache peer issues"

Re: [squid-users] squid cache peer issues

2015-12-21 Thread Alex Samad

Hi

seems like .12 is now available for me. I will apply and retest. is
there anything you would like me to do if I see it again ?

A

On 21 December 2015 at 21:26, Amos Jeffries  wrote:
> On 21/12/2015 2:00 p.m., Alex Samad wrote:
>> Hi
>>
>> running on centos 6.7
>>
>> 3.5.12 still not available on centos 6.
>>
>> rpm -qa | grep squid
>> squid-helpers-3.5.11-1.el6.x86_64
>> squid-3.5.11-1.el6.x86_64
>>
>> This is the 2 cache_peer statements I use
>>
>> # on alcdmz1
>> cache_peer gsdmz1.yieldbroker.com sibling 3128 4827 proxy-only htcp
>> no-query standby=10
>> #cache_peer alcdmz1.yieldbroker.com sibling 3128 4827 proxy-only htcp
>> no-query standby=10
>>
>> # on gsdmz1
>> #cache_peer gsdmz1.yieldbroker.com sibling 3128 4827 proxy-only htcp
>> no-query standby=10
>> cache_peer alcdmz1.yieldbroker.com sibling 3128 4827 proxy-only htcp
>> no-query standby=10
>>
>> on alcdmz1 with export http_proxy pointing to alcdmz1
>>
>> wget -d  http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2
>> -O /dev/null
>> Setting --output-document (outputdocument) to /dev/null
>> DEBUG output created by Wget 1.12 on linux-gnu.
>>
>> --2015-12-21 11:58:05--
>> http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2
>> Resolving alcdmz1... 10.32.20.111
>> Caching alcdmz1 => 10.32.20.111
>> Connecting to alcdmz1|10.32.20.111|:3128... connected.
>> Created socket 4.
>> Releasing 0x0101d540 (new refcount 1).
>>
>> ---request begin---
>> GET http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2 HTTP/1.0
>> User-Agent: Wget/1.12 (linux-gnu)
>> Accept: */*
>> Host: fonts.gstatic.com
>>
>> ---request end---
>> Proxy request sent, awaiting response...
>> ---response begin---
>> HTTP/1.1 200 OK
>> Content-Type: font/woff2
>> Access-Control-Allow-Origin: *
>> Timing-Allow-Origin: *
>> Date: Mon, 30 Nov 2015 04:06:16 GMT
>> Expires: Tue, 29 Nov 2016 04:06:16 GMT
>> Last-Modified: Mon, 06 Oct 2014 20:40:59 GMT
>> X-Content-Type-Options: nosniff
>> Server: sffe
>> Content-Length: 25604
>> X-XSS-Protection: 1; mode=block
>> Cache-Control: public, max-age=31536000
>> Age: 1803109
>> Warning: 113 alcdmz1 (squid) This cache hit is still fresh and more
>> than 1 day old
>> X-Cache: HIT from alcdmz1
>> X-Cache-Lookup: HIT from alcdmz1:3128
>> Via: 1.1 alcdmz1 (squid)
>> Connection: close
>>
>> ---response end---
>> 200 OK
>> Length: 25604 (25K) [font/woff2]
>> Saving to: `/dev/null'
>>
>> 100%[==>]
>> 25,604  --.-K/s   in 0s
>>
>> Closed fd 4
>> 2015-12-21 11:58:05 (1.01 GB/s) - `/dev/null' saved [25604/25604]
>>
>>
>> on gsdmz1
>>
>>
>> wget -d  http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2
>> -O /dev/null
>> Setting --output-document (outputdocument) to /dev/null
>> DEBUG output created by Wget 1.12 on linux-gnu.
>>
>> --2015-12-21 11:58:59--
>> http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2
>> Resolving gsdmz1... 10.32.20.110
>> Caching gsdmz1 => 10.32.20.110
>> Connecting to gsdmz1|10.32.20.110|:3128... connected.
>> Created socket 4.
>> Releasing 0x010a2930 (new refcount 1).
>>
>> ---request begin---
>> GET http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2 HTTP/1.0
>> User-Agent: Wget/1.12 (linux-gnu)
>> Accept: */*
>> Host: fonts.gstatic.com
>>
>> ---request end---
>> Proxy request sent, awaiting response...
>> ---response begin---
>> HTTP/1.1 504 Gateway Timeout
>> Server: squid
>> Mime-Version: 1.0
>> Date: Mon, 21 Dec 2015 00:58:59 GMT
>> Content-Type: text/html;charset=utf-8
>> Content-Length: 3964
>> X-Squid-Error: ERR_ONLY_IF_CACHED_MISS 0
>> Vary: Accept-Language
>> Content-Language: en
>> Age: 1450659540
>> Warning: 113 alcdmz1 (squid) This cache hit is still fresh and more
>> than 1 day old
>> Warning: 110 squid "Response is stale"
>> Warning: 111 squid "Revalidation failed"
>> X-Cache: HIT from alcdmz1
>> X-Cache-Lookup: HIT from alcdmz1:3128
>> X-Cache: MISS from gsdmz1
>> X-Cache-Lookup: MISS from gsdmz1:3128
>> Via: 1.1 alcdmz1 (squid), 1.1 gsdmz1 (squid)
>> Connection: close
>>
>> ---response end---
>> 504 Gateway Timeout
>> Closed fd 4
>> 2015-12-21 11:58:59 ERROR 504: Gateway Timeout.
>>
>>
>> so why does it work from alc and not from gs ???
>
> The alc fetch is going:
>   client->alc->Internet/parent
>
> The gs fetch is going:
>   client->gs->alc->Internet/parent
>
> This is shown in the Via headers.
>
>
> The alc sibling has a response cached which matches. But that required a
> revalidation. (The 113 and 110 Warning headers)
>
> The revalidation failed for some reason (the only-if-cached ?). So it
> output a 504 and sent that back to gs. (The 111 Warning header)
>
> There are several problems here:
> 1) why the revalidation is failing, and
> 2) why the gs peer is not re-trying the fetch via another server (parent
> or DIRECT) after the 504 happens.
> 3) The Age header says ~46yrs ago for the 504 being created,
> suspiciously close

Re: [squid-users] squid cache peer issues

2015-12-21 Thread Amos Jeffries

On 21/12/2015 2:00 p.m., Alex Samad wrote:
> Hi
> 
> running on centos 6.7
> 
> 3.5.12 still not available on centos 6.
> 
> rpm -qa | grep squid
> squid-helpers-3.5.11-1.el6.x86_64
> squid-3.5.11-1.el6.x86_64
> 
> This is the 2 cache_peer statements I use
> 
> # on alcdmz1
> cache_peer gsdmz1.yieldbroker.com sibling 3128 4827 proxy-only htcp
> no-query standby=10
> #cache_peer alcdmz1.yieldbroker.com sibling 3128 4827 proxy-only htcp
> no-query standby=10
> 
> # on gsdmz1
> #cache_peer gsdmz1.yieldbroker.com sibling 3128 4827 proxy-only htcp
> no-query standby=10
> cache_peer alcdmz1.yieldbroker.com sibling 3128 4827 proxy-only htcp
> no-query standby=10
> 
> on alcdmz1 with export http_proxy pointing to alcdmz1
> 
> wget -d  http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2
> -O /dev/null
> Setting --output-document (outputdocument) to /dev/null
> DEBUG output created by Wget 1.12 on linux-gnu.
> 
> --2015-12-21 11:58:05--
> http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2
> Resolving alcdmz1... 10.32.20.111
> Caching alcdmz1 => 10.32.20.111
> Connecting to alcdmz1|10.32.20.111|:3128... connected.
> Created socket 4.
> Releasing 0x0101d540 (new refcount 1).
> 
> ---request begin---
> GET http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2 HTTP/1.0
> User-Agent: Wget/1.12 (linux-gnu)
> Accept: */*
> Host: fonts.gstatic.com
> 
> ---request end---
> Proxy request sent, awaiting response...
> ---response begin---
> HTTP/1.1 200 OK
> Content-Type: font/woff2
> Access-Control-Allow-Origin: *
> Timing-Allow-Origin: *
> Date: Mon, 30 Nov 2015 04:06:16 GMT
> Expires: Tue, 29 Nov 2016 04:06:16 GMT
> Last-Modified: Mon, 06 Oct 2014 20:40:59 GMT
> X-Content-Type-Options: nosniff
> Server: sffe
> Content-Length: 25604
> X-XSS-Protection: 1; mode=block
> Cache-Control: public, max-age=31536000
> Age: 1803109
> Warning: 113 alcdmz1 (squid) This cache hit is still fresh and more
> than 1 day old
> X-Cache: HIT from alcdmz1
> X-Cache-Lookup: HIT from alcdmz1:3128
> Via: 1.1 alcdmz1 (squid)
> Connection: close
> 
> ---response end---
> 200 OK
> Length: 25604 (25K) [font/woff2]
> Saving to: `/dev/null'
> 
> 100%[==>]
> 25,604  --.-K/s   in 0s
> 
> Closed fd 4
> 2015-12-21 11:58:05 (1.01 GB/s) - `/dev/null' saved [25604/25604]
> 
> 
> on gsdmz1
> 
> 
> wget -d  http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2
> -O /dev/null
> Setting --output-document (outputdocument) to /dev/null
> DEBUG output created by Wget 1.12 on linux-gnu.
> 
> --2015-12-21 11:58:59--
> http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2
> Resolving gsdmz1... 10.32.20.110
> Caching gsdmz1 => 10.32.20.110
> Connecting to gsdmz1|10.32.20.110|:3128... connected.
> Created socket 4.
> Releasing 0x010a2930 (new refcount 1).
> 
> ---request begin---
> GET http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2 HTTP/1.0
> User-Agent: Wget/1.12 (linux-gnu)
> Accept: */*
> Host: fonts.gstatic.com
> 
> ---request end---
> Proxy request sent, awaiting response...
> ---response begin---
> HTTP/1.1 504 Gateway Timeout
> Server: squid
> Mime-Version: 1.0
> Date: Mon, 21 Dec 2015 00:58:59 GMT
> Content-Type: text/html;charset=utf-8
> Content-Length: 3964
> X-Squid-Error: ERR_ONLY_IF_CACHED_MISS 0
> Vary: Accept-Language
> Content-Language: en
> Age: 1450659540
> Warning: 113 alcdmz1 (squid) This cache hit is still fresh and more
> than 1 day old
> Warning: 110 squid "Response is stale"
> Warning: 111 squid "Revalidation failed"
> X-Cache: HIT from alcdmz1
> X-Cache-Lookup: HIT from alcdmz1:3128
> X-Cache: MISS from gsdmz1
> X-Cache-Lookup: MISS from gsdmz1:3128
> Via: 1.1 alcdmz1 (squid), 1.1 gsdmz1 (squid)
> Connection: close
> 
> ---response end---
> 504 Gateway Timeout
> Closed fd 4
> 2015-12-21 11:58:59 ERROR 504: Gateway Timeout.
> 
> 
> so why does it work from alc and not from gs ???

The alc fetch is going:
  client->alc->Internet/parent

The gs fetch is going:
  client->gs->alc->Internet/parent

This is shown in the Via headers.


The alc sibling has a response cached which matches. But that required a
revalidation. (The 113 and 110 Warning headers)

The revalidation failed for some reason (the only-if-cached ?). So it
output a 504 and sent that back to gs. (The 111 Warning header)

There are several problems here:
1) why the revalidation is failing, and
2) why the gs peer is not re-trying the fetch via another server (parent
or DIRECT) after the 504 happens.
3) The Age header says ~46yrs ago for the 504 being created,
suspiciously close to 1 Jan 1970 / unix epoch 0-second.


It seems to me you have managed to reproduce


Amos

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[squid-users] squid cache peer issues

2015-12-20 Thread Alex Samad

Hi

running on centos 6.7

3.5.12 still not available on centos 6.

rpm -qa | grep squid
squid-helpers-3.5.11-1.el6.x86_64
squid-3.5.11-1.el6.x86_64

This is the 2 cache_peer statements I use

# on alcdmz1
cache_peer gsdmz1.yieldbroker.com sibling 3128 4827 proxy-only htcp
no-query standby=10
#cache_peer alcdmz1.yieldbroker.com sibling 3128 4827 proxy-only htcp
no-query standby=10

# on gsdmz1
#cache_peer gsdmz1.yieldbroker.com sibling 3128 4827 proxy-only htcp
no-query standby=10
cache_peer alcdmz1.yieldbroker.com sibling 3128 4827 proxy-only htcp
no-query standby=10

on alcdmz1 with export http_proxy pointing to alcdmz1

wget -d  http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2
-O /dev/null
Setting --output-document (outputdocument) to /dev/null
DEBUG output created by Wget 1.12 on linux-gnu.

--2015-12-21 11:58:05--
http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2
Resolving alcdmz1... 10.32.20.111
Caching alcdmz1 => 10.32.20.111
Connecting to alcdmz1|10.32.20.111|:3128... connected.
Created socket 4.
Releasing 0x0101d540 (new refcount 1).

---request begin---
GET http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2 HTTP/1.0
User-Agent: Wget/1.12 (linux-gnu)
Accept: */*
Host: fonts.gstatic.com

---request end---
Proxy request sent, awaiting response...
---response begin---
HTTP/1.1 200 OK
Content-Type: font/woff2
Access-Control-Allow-Origin: *
Timing-Allow-Origin: *
Date: Mon, 30 Nov 2015 04:06:16 GMT
Expires: Tue, 29 Nov 2016 04:06:16 GMT
Last-Modified: Mon, 06 Oct 2014 20:40:59 GMT
X-Content-Type-Options: nosniff
Server: sffe
Content-Length: 25604
X-XSS-Protection: 1; mode=block
Cache-Control: public, max-age=31536000
Age: 1803109
Warning: 113 alcdmz1 (squid) This cache hit is still fresh and more
than 1 day old
X-Cache: HIT from alcdmz1
X-Cache-Lookup: HIT from alcdmz1:3128
Via: 1.1 alcdmz1 (squid)
Connection: close

---response end---
200 OK
Length: 25604 (25K) [font/woff2]
Saving to: `/dev/null'

100%[==>]
25,604  --.-K/s   in 0s

Closed fd 4
2015-12-21 11:58:05 (1.01 GB/s) - `/dev/null' saved [25604/25604]


on gsdmz1


wget -d  http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2
-O /dev/null
Setting --output-document (outputdocument) to /dev/null
DEBUG output created by Wget 1.12 on linux-gnu.

--2015-12-21 11:58:59--
http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2
Resolving gsdmz1... 10.32.20.110
Caching gsdmz1 => 10.32.20.110
Connecting to gsdmz1|10.32.20.110|:3128... connected.
Created socket 4.
Releasing 0x010a2930 (new refcount 1).

---request begin---
GET http://fonts.gstatic.com/s/lato/v11/H2DMvhDLycM56KNuAtbJYA.woff2 HTTP/1.0
User-Agent: Wget/1.12 (linux-gnu)
Accept: */*
Host: fonts.gstatic.com

---request end---
Proxy request sent, awaiting response...
---response begin---
HTTP/1.1 504 Gateway Timeout
Server: squid
Mime-Version: 1.0
Date: Mon, 21 Dec 2015 00:58:59 GMT
Content-Type: text/html;charset=utf-8
Content-Length: 3964
X-Squid-Error: ERR_ONLY_IF_CACHED_MISS 0
Vary: Accept-Language
Content-Language: en
Age: 1450659540
Warning: 113 alcdmz1 (squid) This cache hit is still fresh and more
than 1 day old
Warning: 110 squid "Response is stale"
Warning: 111 squid "Revalidation failed"
X-Cache: HIT from alcdmz1
X-Cache-Lookup: HIT from alcdmz1:3128
X-Cache: MISS from gsdmz1
X-Cache-Lookup: MISS from gsdmz1:3128
Via: 1.1 alcdmz1 (squid), 1.1 gsdmz1 (squid)
Connection: close

---response end---
504 Gateway Timeout
Closed fd 4
2015-12-21 11:58:59 ERROR 504: Gateway Timeout.


so why does it work from alc and not from gs ???

A
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Re: [squid-users] squid cache peer issues

Re: [squid-users] squid cache peer issues

[squid-users] squid cache peer issues

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