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> 83 / 84<br />
J.4.4 July 2003: third stable tree: NUT 1.4.0<br />
On July 25, 2003, 1.4.0 was released. It contained support for both the old "REQ" style protocol (with names like STATUS), and<br />
the new "GET" style protocol (with names like ups.status). This tree is provided to bridge the gap between all of the old releases<br />
and the upcoming 2.0.<br />
2.0 will be released without support for the old REQ/STATUS protocol. The hope is that client authors and those who have<br />
implemented their own monitoring software will use the 1.4 cycle to change to the new protocol. The 1.4 releases contain a lot<br />
of compatibility code to make sure both work at the same time.<br />
J.4.5 July 2003: pushing towards 2.0<br />
1.5.0 forked from 1.4.0 and was released on July 29, 2003. The first changes were to throw out anything which was providing<br />
compatibility with the older versions of the software. This means that 1.5 and the eventual 2.0 will not talk to anything older than<br />
1.4.<br />
This tree continues to evolve with new serial routines for the drivers which are intended to replace the aging upscommon code<br />
which dates back to the early 0.x releases. The original routines would call alarm and read in a tight loop while fetching<br />
characters. The new functions are much cleaner, and wait for data with select. This makes for much cleaner code and easier<br />
strace/ktrace logs, since the number of syscalls has been greatly reduced.<br />
There has also been a push to make sure the data from the <strong>UPS</strong> is well-formed and is actually usable before sending updates out<br />
to upsd. This started during 1.3 as drivers were adapted to use the dstate functions and the new variable/command names. Some<br />
drivers which were not converted to the new naming scheme or didn’t do sanity checks on the incoming <strong>UPS</strong> data from the serial<br />
port were dropped from the tree.<br />
This tree was released as 2.0.0.<br />
J.5 networkupstools.org<br />
J.5.1<br />
November 2003: a new URL<br />
The bandwidth demands of a project like this have slowly been forcing me to offload certain parts to other servers. The download<br />
links have pointed offsite for many months, and other large things like certain <strong>UPS</strong> protocols have followed. As the traffic grows,<br />
it’s clear that having the project attached to exploits.org is not going to work.<br />
The solution was to register a new domain and set up mirrors. There are two initial web servers, with more on the way. The<br />
main project URL has changed from http://www.exploits.org/nut/ to http://www.networkupstools.org. The actual<br />
content is hosted on various mirrors which are updated regularly with rsync, so the days of dribbling bits through my DSL should<br />
be over.<br />
This is also when all of the web pages were redesigned to have a simpler look with fewer links on the left side. The old web<br />
pages used to have 30 or more links on the top page, and most of them vanished when you dropped down one level. The links<br />
are now constant on the entire site, and the old links now live in their own groups in separate directories.<br />
J.6 Second major version<br />
J.6.1 March 2004: NUT 2.0.0<br />
NUT 2.0.0 arrived on March 23, 2004. The jump to version 2 shows the difference in the protocols and naming that happened<br />
during the 1.3 and 1.5 development series. 2.0 no longer ships with backwards compatibility code, so it’s smaller and cleaner<br />
than 1.4.
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