Highly available filesytems

Thursday, 11. 24. 2005  –  Category: all, sw

A hosting project I’m working on needs a large filesystem to be available on multiple hosts and to be continually mirrored. A pair of NFS servers rsyncing master to slave – feeble Coda – looks good but project appears dead (though has current kernel support on both FreeBSD and Linux), 32bit limitation on metadata restricts [...]

Apache stuckage

Thursday, 11. 24. 2005  –  Category: all, sw

mod_status shows loads of weird lines, eg: 29-1 – 0/0/1 . 0.00 10322 28 0.0 0.00 0.00 x.y.z.a (unavailable) GET /reports/latest.html HTTP/1.0 30-1 – 0/0/1 . 0.00 10312 34 0.0 0.00 0.00 x.y.z.a (unavailable) GET /cgi-bin/certificate.cgi/732.gif HTTP/1.1 eventually the number of these reaches MaxClients, wedging the server hung process backtrace like this: (gdb) bt #0 [...]

RT upgrade

Wednesday, 11. 23. 2005  –  Category: all, sw

escalation: want to give someone read-only access to a particular RT queue on rt 3.2.2 this works, but user and group information is leaked through the Configuration menus rt 3.4.4 has a specific permission knob for this menu rt 3.4.4 doesn’t like mod_perl 1.99.x mod_perl 2.0.2 contains incompatibilities over Apache:: versus Apache2:: some modules, such [...]

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