-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 André,
On 10/31/12 4:32 PM, André Warnier wrote: > Marko Asplund wrote: >> Hi, >> >> There are at least 3 different approaches for configuring Apache >> httpd 2.2 to act as a reverse proxy for Tomcat 7.0: >> >> a) mod_proxy_http b) mod_proxy_ajp c) mod_jk >> >> There's been quite a lot of discussion about the differences of >> each one but a lot of that discussion appears to be either not >> very analytical or outdated. >> >> What are the current differences and tradeoffs with using these >> alternatives? >> >> Quite a few writers appear recommend mod_jk if performance and >> HA features are critical. But Apache 2.2 mod_proxy supports some >> load balancing and failover features through mod_proxy_balancer. >> Also, mod_cache can be used to offload static resource serving >> from the back-end to provide something similar to JkMount. Does >> mod_jk still have a lead when it comes to these features? >> >>> From a setup point of view, using mod_proxy_http/ajp is a lot >>> simpler than >> mod_jk because e.g. on a Linux system you can typically install >> these using a system package manager. For mod_jk you need to >> either have a compilation environment on your production system >> (which the sysops don't like) or compile and package the module >> on another machine with a compatible OS setup. >> > Just a note to say that "on a Linux system" above is probably too > broad a generalisation. To my knowledge, most Linux distributions > offer a mod_jk package. RedHat doesn't, which is indeed a pain. Often, they have insane dependencies (or used to). I seem to recall one package manager wanting to install Java itself just for mod_jk. I fired-up apt-get on my Debian Squeeze system and was delighted to see this: $ apt-cache show libapache2-mod-jk Package: libapache2-mod-jk Version: 1:1.2.30-1squeeze1 Depends: libc6 (>= 2.3), apache2.2-common, apache2 Suggests: tomcat6, libapache-mod-jk-doc Unfortunately, like most Debian packages, it's hideously out of date with the state-of-the art in terms of version numbers (1.2.30 is 2.5 years old). You can play games with backports and stuff like that, but most people won't: they just stick to the release channel. RedHat not providing a package for mod_jk is enormously frustrating. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iEYEARECAAYFAlCYj1kACgkQ9CaO5/Lv0PDFmQCgiwyQUa2EB9x12c9UBo6CilNF cKcAnjzMSVigkD/yIsiDGNUkUxbzN9Z7 =7Dng -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
