Setup / Tune Proxy Server Squid for RTC

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Presentation transcript:

Setup / Tune Proxy Server Squid for RTC Wayne Chiang 04/24/2013

What is squid Popular open source proxy server. Caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Reduces bandwidth and improves response times by caching and reusing frequently-requested web pages.

Download and Build http://www.squid-cache.org/Versions/ Latest release 3.3.3 (released 3/12/2013) I have built it on miles-lab (Linux 6.4) /home/mlsinst/squid/squid-3.3.3 Installed on /home/mlsinst/squid/install333 Proxy of https://satchmo.ottawa.ibm.com:9443 to https://miles-lab.ottawa.ibm.com:9843

squid.conf cache_replacement_policy heap GDSF memory_replacement_policy heap GDSF logformat squid %{%b %d %Y %H:%M:%S}tl.%03tu %{%Z}tl %6tr %>a->%lp %Ss/%03>Hs %<st %rm %ru %un %Sh/%<A %mt access_log /home/mlsinst/squid/install333/var/logs/access.log squid #cache_store_log none cache_store_log /home/mlsinst/squid/install333/var/logs/store.log cache_peer satchmo.ottawa.ibm.com parent 9443 0 no-query originserver name=satchmoAccel ssl login=PROXYPASS sslflags=DONT_VERIFY_PEER acl satchmoport myport 9843 cache_peer_access satchmoAccel allow satchmoport coredump_dir /home/mlsinst/squid/install333/var/cache http_access allow all cachemgr_passwd disable all ssl_bump allow all sslproxy_cert_error allow all https_port 9843 cert=/home/mlsinst/squid/install333/etc/server.pem accel key=/home/mlsinst/squid/install333/etc/privkey.pem vhost refresh_pattern . 0 20% 4320 cache_dir aufs /home/mlsinst/squid/install333/var/cache 4096 256 256 buffered_logs on

Run squid Cd /home/mlsinst/squid/install333/sbin Run './squid -z' to create the directory structure for the first time. Run './squid' to start the proxy on Linux. To stop the proxy, you can run "./squid -k shutdown".

access.log TCP_HIT TCP_MISS TCP_MEM_HIT A valid copy of the requested object was in the cache. TCP_MISS The requested object was not in the cache. TCP_MEM_HIT A valid copy of the requested object was in the cache and it was in memory, thus avoiding disk accesses.

Tuning Squid Set the "cache_mem" directive in squid.conf as large as possible Set the "cache_dir" directive in squid.conf to a large value will increase the disk-based cache size for squid. Turn off access logging if you do not require it for day to day use

Reference Setting up the Squid Caching Proxy w/SSL for RTC 2.0 Using content caching proxies for Jazz Source Control

Q&A