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Wednesday, December 14, 2011

Cassandra OpsCenter Community features

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played with the Ops several hours, here are the major feature In my option. Monitoring the whole cluster status, like req/s, disk capa...

Cassandra Opscenter, connected to the cluster, But No Node information get listed

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configration is pretty simple for opscenter, just change files under conf fodler, point to correct seed server, then I can query the data fr...

Cassandra OpsCenter,Failed to load application: libpython2.6.so.1.0

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Unzip the OpsCenter file, Instal the 2.7 Python, then run the opscenter, failed get the following error. ...
Tuesday, December 6, 2011

How to: write a key mapper or Key transformation utility in 10 minutes

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Question, need a utility to map or transform the key stoke, say when you press F6, replace the contents with a Mailing address, and Press F7...
Wednesday, November 30, 2011

Error: Vmplayer, NO Disk, There is no disk in the drive. Please insert a disk into drive \Device\Harddisk2\DR4.

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One Day I get this error, when I just open the Vmware player, Kept popping up this error when I click the VMs. Then I run a diskpart fr...
4 comments:
Wednesday, November 16, 2011

How to: Install and Test apache mahout on hadoop

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Mahout and Hadoop are all java libraries basically, mahout use the Maven tool to build the source code and maintain the dependency. So we...
122 comments:
Monday, November 14, 2011

How to: recover the Root password for Centos

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You may forget the Root password which is hard to believe, but it does happen everyday. here is the tips to recover the root password for Ce...
3 comments: