As I'm working through my ZoneMinder setup (and more posts are coming), I ran into a capacity issue. I thought it'd be a good time to do a bake-off between ZoneMinder on Ubuntu/Linux vs FreeBSD. This wasn't as easy as I thought...
To perform what I thought would be a quick test, I configured an additional Ubuntu ZoneMinder server and setup the multi-server feature. Worked like a charm (again, I'll do a full write-up on this in the future). This all went sideways when I tried adding a FreeBSD server into the mix.
I was working through the differences in the install defaults in terms of paths, which was solvable using symlinks in most cases, I found one that wasn't fixable. Many/most of the paths are defined in the database, so all nodes share the same configuration detail. The problem with this is the shared memory mapper/manager. /dev/shm is in the database for memory management, which is fine for Ubuntu, but FreeBSD doesn't use /dev/shm and does something different. So without doing evil things in the /dev tree, this appears to be an insurmountable hurdle. After 2 days of beating on this over a weekend, I gave up and put Ubuntu on the 3rd node and moved on.
End result is, if you want to run a multi-server ZoneMinder setup all of the systems should really run the same OS. This is somewhat obvious, but also somewhat sad since it makes migrations to a new OS very challenging, if not impossible.
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