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Old 08-17-2011, 09:41 AM   #1
colinliu1975
LQ Newbie
 
Registered: Aug 2011
Posts: 2

Rep: Reputation: Disabled
SQUID only TCP_MISS and cache inconsistencies


Hi All,

I am new to Squid and having installed it on my local linux box, I want to confirm things are being cached.

I have access to cache manager, and from what I can see, not everything is shown to what I expect. ie not all JPG files are listed in "All Cache Objects".

I am also getting TCP/MISS on my access log for most images except for one which is why I am not sure if it's working correctly. I am focusing on bbc.co.uk for testing.

Here is my config file
*********************
#
# Recommended minimum configuration:
#
acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1

# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
#acl localnet src 192.168.1.241 # RFC1918 possible internal network
#acl localnet src 172.16.0.0/12 # RFC1918 possible internal network
#acl localnet src 192.168.0.0/16 # RFC1918 possible internal network
#acl localnet src fc00::/7 # RFC 4193 local private network range
#acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines

acl SSL_ports port 443
acl Safe_ports port 8080 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl CONNECT method CONNECT


acl localnet src 192.168.1.241

# Who & what to cache
acl cacheThisServer dstdomain .bbc.co.uk
acl images rep_mime_type -i ^image/

#
# Recommended minimum Access Permission configuration:
#
# Only allow cachemgr access from localhost
http_access allow localnet


http_access allow manager localhost
http_access deny manager

# Deny requests to certain unsafe ports
http_access deny !Safe_ports

# Deny CONNECT to other than secure SSL ports
#http_access deny CONNECT !SSL_ports

# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost

#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed

#http_access allow localnet

# allow localhost always proxy functionality
http_access allow localhost

# And finally deny all other access to this proxy
#:http_access deny all
http_access allow localnet

# Squid normally listens to port 3128
http_port 8080

# Visible hostname
visible_hostname myproxy

# We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?

# Uncomment and adjust the following to add a disk cache directory.
cache_dir ufs /var/cache/squid 5000 16 256

# Cache images only - CL
no_cache deny !cacheThisServer !images

# Leave coredumps in the first cache dir
coredump_dir /var/cache/squid

# Add any of your own refresh_pattern entries above these.
#refresh_pattern -i .jpg$ 60 90% 1440 reload-into-ims ignore-no-cache refresh-ims ignore-reload
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern . 0 20% 4320

# For Cache Manager
cache_mgr xxxx@xxxxx.xx.uk
cachemgr_passwd Wh473v3r

# Effective user and group
cache_effective_user squid
cache_effective_group nogroup

*****************************************************************

Basically, I added acl commands for bbc.co.uk, cache only images, initially wrote a refresh_pattern for jpg, but this is now commented out.

Any advice and guidance on how I confirm everything is working on how it should be would be appreciated.

Thx
 
Old 08-18-2011, 03:32 AM   #2
colinliu1975
LQ Newbie
 
Registered: Aug 2011
Posts: 2

Original Poster
Rep: Reputation: Disabled
Morning from the UK,

Anyone? Any guidance on what's missing would be grateful.

I saw on a thread,

http://stackoverflow.com/questions/6...oxy-is-working

It mentions it's dependant on the images' header etc whether Squid caches.......Are they right?

How would I get around this if I wish to cache all images say from bbc.co.uk

I have this:
# Who & what to cache
acl cacheThisServer dstdomain .bbc.co.uk
acl images rep_mime_type -i ^image/

# Cache images only - CL
no_cache deny !cacheThisServer !images


Thanks in advance
 
  


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