Difference between revisions of "Ajcody-Clustering"

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===Actual Clustering Topics Homepage===
 
===Actual Clustering Topics Homepage===
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Please see [[Ajcody-Clustering]]
 
Please see [[Ajcody-Clustering]]
  
 
===My Other Clustering Pages===
 
===My Other Clustering Pages===
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* [[Ajcody-Notes-Upgrade-Options#Upgrade_Steps_for_Multi-Servers_with_Clustered_Mailstores]]
 
* [[Ajcody-Notes-Upgrade-Options#Upgrade_Steps_for_Multi-Servers_with_Clustered_Mailstores]]
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===Good Summary For RHEL Clustering===
 
===Good Summary For RHEL Clustering===
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This is a good solid summary about RHEL clustering:
 
This is a good solid summary about RHEL clustering:
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===Active-Active Clustering===
 
===Active-Active Clustering===
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There is a bug(rfe) for active-active configuration. Please see:
 
There is a bug(rfe) for active-active configuration. Please see:
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===Non-San Based Fail Over HA/Cluster Type Configuration===
 
===Non-San Based Fail Over HA/Cluster Type Configuration===
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This RFE covers issues when your wanting a "copy" of the data to reside on an independent server - LAN/WAN.
 
This RFE covers issues when your wanting a "copy" of the data to reside on an independent server - LAN/WAN.
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===RFE's/Bug Related To Supporting Clustering Options===
 
===RFE's/Bug Related To Supporting Clustering Options===
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* "Add VCS cluster support for Suse ES 10"
 
* "Add VCS cluster support for Suse ES 10"
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===HA-Linux (Heartbeat)===
 
===HA-Linux (Heartbeat)===
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References:
 
References:

Revision as of 20:33, 16 November 2008

Template:NotOfficial

Clustering Topics

Actual Clustering Topics Homepage


Please see Ajcody-Clustering

My Other Clustering Pages


Good Summary For RHEL Clustering


This is a good solid summary about RHEL clustering:

http://www.linuxjournal.com/article/9759

Active-Active Clustering


There is a bug(rfe) for active-active configuration. Please see:

http://bugzilla.zimbra.com/show_bug.cgi?id=19700

Non-San Based Fail Over HA/Cluster Type Configuration


This RFE covers issues when your wanting a "copy" of the data to reside on an independent server - LAN/WAN.

Please see:

RFE's/Bug Related To Supporting Clustering Options


HA-Linux (Heartbeat)


References:


HA-Linux How-To For Testing And Educational Use

References:


Actual HA-Linux How-To For Testing And Educational Use Homepage

Please see Ajcody-Notes-HA-Linux-How-To

Motive Behind How-To

I hope this gives an easy way to setup through some clustering concepts for an administrator to gain some real-world experience when they currently have none. I plan on walking through each "function" that is behind clustering rather than jumping to an end setup (Linux-HA, Shared Storage, And Zimbra).

The structure will be:

  • Setup two machines (physical or virtual)
    • Emphasis physical hostname / ip vs. the hostname and ip address that will be for HA.
  • Setup virtual hostname and ip address for HA.
    • Explain and do ip failover between the two machines.
  • Setup a disk mount, we'll use probably use a nfs export from a third machine.
    • This will give us an example of expanding the HA conf files to move beyond the ip address failover.
    • Adjust HA conf's to now export via nfs a local directory from each server. This will not be a shared physical disk of course.
  • Setup a shared disk between the two servers and include it in the HA conf files.
    • Can use drbd or maybe figure out a way to share a virtual disk between the two vm's.
  • Setup a very simple application to include between the two machines. Something like apache or cups.
  • Go back and now readjust all variables between monitoring type (automatic) failover and simple manually initiated.

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