Parse error for workers.properties

Binary package hint: libapache-mod-jk

I'm running libapache-mod-jk 1.2.28-2 on Ubuntu 10.04 and I have this content in my workers.properties file:

worker.list = dev
worker.dev.type = ajp13
worker.dev.host = localhost
worker.dev.port = 8009

Apache doesn't start and my mod_jk.log shows this error:

[Fri Jun 11 10:57:26.414 2010] [4853:2129983296] [error] wc_create_worker::jk_worker.c (139): Unknown worker type aj113 for worker dev
[Fri Jun 11 10:57:26.414 2010] [4853:2129983296] [error] build_worker_map::jk_worker.c (262): failed to create worker dev

Do you see the "aj113" instead of "ajp13"? When I remove the space char before and after the equal char in the corresponding line, I get this im my logs:

[Fri Jun 11 10:59:05.457 2010] [4889:3785144128] [error] ajp_validate::jk_ajp_common.c (2526): worker dev can't resolve tomcat address localhsst
[Fri Jun 11 10:59:05.457 2010] [4889:3785144128] [error] wc_create_worker::jk_worker.c (163): validate failed for dev
[Fri Jun 11 10:59:05.457 2010] [4889:3785144128] [error] build_worker_map::jk_worker.c (262): failed to create worker dev

Do you see the "localhsst" instead of "localhost"? When I remove all spaces in my workers.properties, Apache starts without any errors. My config now contains:

worker.list=dev
worker.dev.type=ajp13
worker.dev.host=localhost
worker.dev.port=8009

I haven't changed this config for years and it worked flawlessly with all previous mod_jk versions.

This bug could be critical for people updating a production machine from a previous Ubuntu release to lucid lynx, because it takes some time to recognize that you have to remove spaces to get mod_jk up again.