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I'm trying to install mod_cluster on JBoss, after some problems with httpd solved in this, now I'm stuck when I try to run "apachectl start", it returns the error:

httpd: Syntax error on line 128 of /etc/httpd/conf/httpd.conf: Cannot load modules/mod_slotmem.so into server: /etc/httpd/modules/mod_slotmem.so: undefined symbol: unixd_config

It seems like it can't run the mod cluster modules.

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ale93p
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1 Answers1

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Well, we were discussing the error message quite some time ago, 4th reference on Google for "undefined symbol: unixd_config" See the discussion.

The digest is that you cannot randomly mix mod_cluster 1.2.x and mod_cluster 1.3.x built either for httpd 2.2.x or httpd 2.4.x.

See http://modcluster.io/documentation/#configure-httpd where the loading of either LoadModule cluster_slotmem_module modules/mod_cluster_slotmem.so or LoadModule slotmem_module modules/mod_slotmem.so is described.

Last but not least, for having any meaningful response, always do include the version of your httpd, the version of mod_cluster modules, where did you get them or how you built them.

Michal Karm Babacek
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