More patches: Include and cfg file changes

Steve Shipway <[email protected]> Wed, 22 Sep 2010 00:15:25 +0000
Newsgroups gmane.network.mrtg.devel
Message-ID <28E447343A85354483BCF7C3E9D5EAA50DC7D249@uxcn10-1.UoA.auckland.ac.nz>
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I'm on a roll this week... :)

More patches for MRTG in the pipeline -

1.       Add wildcard support to the Include: directive.   This is somethin=
g I've wanted for years and been too lazy to submit the (small) patch requi=
red to make it work.  Routers2 already supports this :P

2.       In daemon mode, check for modifications to the cfg file, and if so=
, reload the configuration.  I'm still testing this one because it is poten=
tially difficult, as MRTG makes a few assumptions that this won't happen.  =
I'm also using Tobi's trick of using -M rather than (time-stat()[9]) on the=
 file age, and then $^T=3Dtime after the reload.

3.       Identify RRD 1.4.999 or later, and use the new rrdcached functions=
 I added in the RRDTool patch if running in rrdcached/TCP mode.  This is th=
e final hurdle to allow MRTG to run on a separate server from the RRDTool d=
atabase, allowing a true distributed MRTG setup.  Some additional code now =
in place to prevent re-testing of remote RRD files when in rrdcached/TCP mo=
de (as the -M test can no longer be used, of course).  Needs a bit more tes=
ting, though...

I'll be submitting these to Tobi once I'm happy they're stable.  In the mea=
ntime, I'd appreciate any feedback from the community.

Steve



________________________________
Steve Shipway
ITS Unix Services Design Lead
University of Auckland, New Zealand
Floor 1, 58 Symonds Street, Auckland
Phone: +64 (0)9 3737599 ext 86487
DDI: +64 (0)9 924 6487
Mobile: +64 (0)21 753 189
Email: [email protected]<mailto:[email protected]>
P Please consider the environment before printing this e-mail



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<div class=3DWordSection1>

<p class=3DMsoNormal>I&#8217;m on a roll this week&#8230; <span style=3D'fo=
nt-family:
Wingdings'>J</span><o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>More patches for MRTG in the pipeline &#8211;<o:p></o:=
p></p>

<p class=3DMsoListParagraph style=3D'text-indent:-18.0pt;mso-list:l0 level1=
 lfo1'><![if !supportLists]><span
style=3D'mso-list:Ignore'>1.<span style=3D'font:7.0pt "Times New Roman"'>&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Add wildcard support to the Include: directive. &nb=
sp;&nbsp;This
is something I&#8217;ve wanted for years and been too lazy to submit the
(small) patch required to make it work.&nbsp; Routers2 already supports thi=
s :P<o:p></o:p></p>

<p class=3DMsoListParagraph style=3D'text-indent:-18.0pt;mso-list:l0 level1=
 lfo1'><![if !supportLists]><span
style=3D'mso-list:Ignore'>2.<span style=3D'font:7.0pt "Times New Roman"'>&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>In daemon mode, check for modifications to the cfg
file, and if so, reload the configuration.&nbsp; I&#8217;m still testing th=
is
one because it is potentially difficult, as MRTG makes a few assumptions th=
at
this won&#8217;t happen.&nbsp; I&#8217;m also using Tobi&#8217;s trick of u=
sing
&#8211;M rather than (time-stat()[9]) on the file age, and then $^T=3Dtime =
after
the reload.<o:p></o:p></p>

<p class=3DMsoListParagraph style=3D'text-indent:-18.0pt;mso-list:l0 level1=
 lfo1'><![if !supportLists]><span
style=3D'mso-list:Ignore'>3.<span style=3D'font:7.0pt "Times New Roman"'>&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Identify RRD 1.4.999 or later, and use the new
rrdcached functions I added in the RRDTool patch if running in rrdcached/TC=
P
mode.&nbsp; This is the final hurdle to allow MRTG to run on a separate ser=
ver
from the RRDTool database, allowing a true distributed MRTG setup.&nbsp; So=
me
additional code now in place to prevent re-testing of remote RRD files when=
 in
rrdcached/TCP mode (as the &#8211;M test can no longer be used, of
course).&nbsp; Needs a bit more testing, though&#8230;<o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>I&#8217;ll be submitting these to Tobi once I&#8217;m =
happy
they&#8217;re stable.&nbsp; In the meantime, I&#8217;d appreciate any feedb=
ack
from the community.<o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>Steve<o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><span lan=
g=3DEN-US>

<hr size=3D2 width=3D"100%" align=3Dcenter>

</span></div>

<p class=3DMsoNormal><b>Steve Shipway<o:p></o:p></b></p>

<p class=3DMsoNormal><span style=3D'font-size:10.0pt'>ITS Unix Services Des=
ign Lead<o:p></o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:10.0pt'>University of Aucklan=
d, New
Zealand<o:p></o:p></span></p>

<p class=3DMsoNormal><span style=3D'font-size:10.0pt'>Floor 1, 58 Symonds S=
treet,
Auckland<o:p></o:p></span></p>

<p class=3DMsoNormal><i><span style=3D'font-size:10.0pt;color:#595959'>Phon=
e: +64
(0)9 3737599 ext 86487<o:p></o:p></span></i></p>

<p class=3DMsoNormal><i><span style=3D'font-size:10.0pt;color:#595959'>DDI:=
 +64
(0)9 924 6487<o:p></o:p></span></i></p>

<p class=3DMsoNormal><i><span style=3D'font-size:10.0pt;color:#595959'>Mobi=
le: +64
(0)21 753 189<o:p></o:p></span></i></p>

<p class=3DMsoNormal><i><span style=3D'font-size:10.0pt;color:#595959'>Emai=
l: <a
href=3D"mailto:[email protected]"><span style=3D'color:#595959'>s.sh=
[email protected]</span></a><o:p></o:p></span></i></p>

<p class=3DMsoNormal><span lang=3DEN-GB style=3D'font-size:18.0pt;font-fami=
ly:Webdings;
color:green'>P</span><span lang=3DEN-GB style=3D'color:blue'> </span><span
lang=3DEN-GB style=3D'font-size:10.0pt;font-family:"Arial Narrow","sans-ser=
if";
color:green'>Please consider the environment before printing this e-mail</s=
pan><span
lang=3DEN-GB style=3D'color:blue'> </span><span lang=3DEN-GB style=3D'font-=
size:7.5pt;
font-family:"Verdana","sans-serif";color:navy'><o:p></o:p></span></p>

<p class=3DMsoNormal><i><span style=3D'font-size:10.0pt'><o:p>&nbsp;</o:p><=
/span></i></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

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