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    <title>tech.gate.io blog</title>
    <description>Last posts to weblogs.</description>
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    <pubDate>Sun, 20 May 2012 13:48:35 +0000</pubDate>
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    <link>http://www.gate.io/</link>
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    <item>
      <title>tivoli itm 6.2 change agent hostname to other then original system hostname</title>
      <description><![CDATA[<p>this might be an issue for clusters, or if you have more systems with the same hostname (which should not be the case, but unfortunately sometimes it is)
</p>

<p>&nbsp;
<br />in your install dir, /tivoli/ITM in my case, most often might be /opt/IBM/tivoli
</p>

<p>&nbsp;
<br />go to the config directory, and change the lz.ini file for linux agents, or the ux.ini file for unix agents, change the value of
</p>

<div class="plugincode"><pre class="codelisting" dir="ltr" style="overflow:auto;" id="codebox" >CTIRA_HOSTNAME=$RUNNINGHOSTNAME$
CTIRA_SYSTEM_NAME=$RUNNINGHOSTNAME$</pre></div>
<p>&nbsp;
<br />TO
</p>

<div class="plugincode"><pre class="codelisting" dir="ltr" style="overflow:auto;" id="codebox1" >CTIRA_HOSTNAME=yourhostname
CTIRA_SYSTEM_NAME=yourhostname</pre></div>
<p>&nbsp;
<br />(maybe it's enough to just change $RUNNINGHOSTNAME$, but I haven't tried this)
</p>

<p>stop the agent, remove all offline entries from the teps portal, and restart it
</p>

<p>there are several other files with this two variables, but changing these has no effect!
</p>

]]></description>
      <pubDate>Tue, 15 Mar 2011 18:17:59 +0000</pubDate>
      <link>http://www.gate.io/blogpost56</link>
      <guid>http://www.gate.io/blogpost56</guid>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>X11 secure display forwarding via ssh error</title>
      <description><![CDATA[<p>I had to do a ssh display forwarding for a web browser, from a CentOS 5.5 to a solaris 10 system, but I guess this is a general issue on linux systems, or at least on red hat / centos /fedora
</p>

<p>I red dozens of forum entries, but no one could solve my issue
</p>

<p>ssh_config was ok on client system, sshd_config was configured correctly on server system,
</p>

<p>tried with ssh -Y... tried several combinations of ~/.xauthority
</p>

<p>but the server never set the DISPLAY variable to localhost
</p>

<p>&nbsp;
<br />after one hour of searching an trying, I figured it out my self: there was a damn package missing, this package only consists of 2 binaries, and one of them is the
<br />/usr/bin/xauth file
</p>

<p>from the package
</p>

<p>xorg-x11-xauth
</p>

<div class="plugincode"><pre class="codelisting" dir="ltr" style="overflow:auto;" id="codebox2" >yum install xorg-x11-xauth</pre></div>
<p>&nbsp;
<br />
<br />and everything worked fine, thanks to clear error messages, that point you directly to the problem!
</p>

<p>&nbsp;
</p>
]]></description>
      <pubDate>Tue, 15 Mar 2011 18:03:51 +0000</pubDate>
      <link>http://www.gate.io/blogpost54</link>
      <guid>http://www.gate.io/blogpost54</guid>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Android  2.2.1  delay between accepting call and actually hearing the caller</title>
      <description><![CDATA[<p>I was experiencing the same problem with htc legend and htc wildfire, both on same android version 2.2.1
</p>

<p>after getting and accepting the call, it took me about 10sec to actually hear the caller, in this time, the callers just heard it ringing normally as if I was simply not accepting the call
</p>

<p>&nbsp;
<br />
<br />the reason was a corrupted fat filesystem on the sd card, probably I just plugged out usb cable without ejecting the device or something like that
</p>

<p>I couldn't fix the fs on linux, needed to use windows7
</p>

<p>after short filesystem check, I don't have any problems anymore
</p>
]]></description>
      <pubDate>Tue, 15 Mar 2011 17:50:57 +0000</pubDate>
      <link>http://www.gate.io/blogpost52</link>
      <guid>http://www.gate.io/blogpost52</guid>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>AIX: Get PVID directly from hdisk using od</title>
      <description><![CDATA[<p>lspv and other high level lvm commands are reading the pvid from the ODM database, not from the disk itself
<br />this is a great performance improvement, but may lead to an inconsistence of pvids
</p>

<p>when the storage admin for example, deletes a hdisk and maps a new one, before you delete it on the system, after running "cfgmgr/cfgdev" the new hdisk appears as the old one with it's old pvid
</p>

<p>mapping such an unlucky disk to a lpar, results in different pv ids on lpar and vio server, which may be an absolute disaster
</p>

<p>to check the real pvid, read the disk-header directly with the command
</p>
<div class="plugincode"><pre class="codelisting" dir="ltr" style="overflow:auto;" id="codebox3" >od -A n -j 128 -N 8 -x /dev/hdisk120</pre></div>
<p>&nbsp;
<br />compare this value with the one from lspv
<br />if it's different, use
</p>

<div class="plugincode"><pre class="codelisting" dir="ltr" style="overflow:auto;" id="codebox4" >chdev -l hdiskx -a pv=yes</pre></div>
<p>&nbsp;
<br />this command will even work, if the disk is already mapped, since the disk already has a pvid, so chdev just reads the pvid from the disk-header, and writes it to the ODM
</p>

]]></description>
      <pubDate>Thu, 15 Apr 2010 13:25:21 +0000</pubDate>
      <link>http://www.gate.io/blogpost51</link>
      <guid>http://www.gate.io/blogpost51</guid>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Power Blade: Add additional vscsi adapters to lpar / vhosts to vio server </title>
      <description><![CDATA[<p>other than on the hmc, it's not possible to add additional virtual scsi adapters to lpars from the Integrated Virtualization Manger (IVM) GUI
</p>

<p>when setting up a Power HA (formerly HACMP) Cluster, it's wise to use different vhosts for different storage subsystems
</p>

<p>therefore you need to log in to the vio-server, and add the adapter manually from command line, with the command (as padmin):
</p>

<div class="plugincode"><pre class="codelisting" dir="ltr" style="overflow:auto;" id="codebox5" >$ chhwres -r virtualio --rsubtype scsi -p lparname -o a  -s 6</pre></div>
<p>&nbsp;
<br />when adding more then one adapter, choose different slots
</p>

<div class="plugincode"><pre class="codelisting" dir="ltr" style="overflow:auto;" id="codebox6" >$ chhwres -r virtualio --rsubtype scsi -p lparname -o a  -s 7</pre></div>
<div class="plugincode"><pre class="codelisting" dir="ltr" style="overflow:auto;" id="codebox7" >$ chhwres -r virtualio --rsubtype scsi -p lparname -o a  -s 8</pre></div>
<p>&nbsp;
<br />these changes are persistent over reboots
</p>

<p>&nbsp;
</p>
]]></description>
      <pubDate>Wed, 24 Mar 2010 08:49:36 +0000</pubDate>
      <link>http://www.gate.io/blogpost49</link>
      <guid>http://www.gate.io/blogpost49</guid>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Bug in xymon 4.3.3 Beta 2 splitncv</title>
      <description><![CDATA[<p>after migration to xymon 4.3.3 Beta 2 from 4.2.0, our rrd files, built with SPLITNCV where not working anymore
</p>

<p>splitncv separates rrd values to own files, making it easy to generate graphs for an unknown number of output values using regexp
<br />for network interface performance monitoring for example, where the number of interfaces may differ from host to host
</p>

<p>&nbsp;
<br />
<br />no updates on existing rrds, and no new ones where created
</p>

<p>we spent a lot of time in searching for configuration problems, maybe leading to this problem
</p>

<p>but then we found this in xymon mailing list:
</p>

<p><a target="_blank" class="wiki"  href="http://www.hswn.dk/hobbiton/2009/07/msg00242.html">http://www.hswn.dk/hobbiton/2009/07/msg00242.html</a>
</p>

<p>&nbsp;
<br />in short:
</p>

<p>go to xymon-4.3.0-beta2 directory
</p>

<p>change to hobbitd/rrd
</p>

<p>and edit the source file do_ncv.c
</p>

<p>change line 180:
</p>

<div class="plugincode"><pre class="codelisting" dir="ltr" style="overflow:auto;" id="codebox8" >if (split_ncv &amp;&amp; (paridx &gt; 1)) {</pre></div>
<p>&nbsp;
<br />to
</p>

<div class="plugincode"><pre class="codelisting" dir="ltr" style="overflow:auto;" id="codebox9" >if (split_ncv &amp;&amp; (paridx &gt; 0)) {</pre></div>
<p>&nbsp;
<br />recompile, exchange the new compiled hobbitd_rrd with the one in
</p>

<p>server/bin
</p>

<p>restart hobbit
</p>

<p>should be working now
</p>

]]></description>
      <pubDate>Tue, 23 Feb 2010 09:11:37 +0000</pubDate>
      <link>http://www.gate.io/blogpost48</link>
      <guid>http://www.gate.io/blogpost48</guid>
      <slash:comments>0</slash:comments>
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