Network UPS Tools User Manual
Network UPS Tools User Manual
Network UPS Tools User Manual
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<strong>Network</strong> <strong>UPS</strong> <strong>Tools</strong> <strong>User</strong> <strong>Manual</strong> 47 / 84<br />
mkdir -p /chroot/nut/dev<br />
cp -a /dev/null /chroot/nut/dev<br />
Try to start your driver(s) and make sure everything fires up as before.<br />
upsdrvctl -r /chroot/nut -u nutdev start<br />
Once your drivers are running properly, try starting upsd.<br />
upsd -r /chroot/nut -u nutsrv<br />
Check your syslog. If nothing is complaining, try running clients like upsc and upsmon. If they seem happy, then you’re done.<br />
9.6.2 symlinks<br />
After you do this, you will have two copies of many things, like the confpath and the state path. I recommend deleting the real<br />
/var/state/ups, replacing it with a symlink to /chroot/nut/var/state/ups. That will let other programs reference the .pid files without<br />
a lot of hassle.<br />
You can also do this with your confpath and point /usr/local/ups/etc at /chroot/nut/usr/local/ups/etc unless you’re worried about<br />
something hurting the files inside that directory. In that case, you should maintain a master copy and push it into the chroot path<br />
after making changes.<br />
upsdrvctl itself does not chroot, so the ups.conf still needs to be in the usual confpath.<br />
9.6.3 upsmon<br />
This has not yet been applied to upsmon, since it can be quite complicated when there are notifiers that need to be run. One<br />
possibility would be for upsmon to have three instances:<br />
• privileged root parent that listens for a shutdown command<br />
• unprivileged child that listens for notify events<br />
• unprivileged chrooted child that does network I/O<br />
This one is messy, and may not happen for some time, if ever.<br />
9.6.4 Config files<br />
You may now set chroot= and user= in the global section of ups.conf.<br />
upsd chroots before opening any config files, so there is no way to add support for that in upsd.conf at the present time.<br />
A<br />
Glossary<br />
This section document the various acronyms used throughout the present documentation.<br />
NUT<br />
<strong>Network</strong> <strong>UPS</strong> <strong>Tools</strong>.<br />
PDU<br />
Power Distribution Unit.<br />
SCD<br />
Solar Controller Device.<br />
<strong>UPS</strong><br />
Uninterruptible Power Supply.