hacmp in a 7 node configuration ?


 
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Operating Systems AIX hacmp in a 7 node configuration ?
# 8  
Old 08-30-2009
Hi Shockneck,

many many thanks for your reply. You have answered all my questions so far.
- DBAs don't have root access to the cluster
- only 2 SAs will have root access - me and my backup - and we will both build the cluster together
- we have a very strong change control in place and our documentation is pretty good
- we are aware this is no 24/7/365 solution - that is why we have an independant DR recovery site and a uat environment for testing
- the A1-A5 servers + 1 spare are running right now in a VCS cluster on AIX ... our engineering doesnt support it past 9/2010 - that is basically why we're going to move it to hacmp
- we will have almost a year for build and testing
- we have a weekend greenzone of 36 hrs for the environment and always patch all nodes in any cluster at the same time
- we will have hartbeat on disk on at least 2 different mini-devicegroups as you suggested

Once more thank you for all your suggestions - I will keep you in the loop if problems arise as I can see you don't have any major objection Smilie

Thank you in addition for the EMC bug tip - this explains why we have the problems on the 2 node clusters ... our SAN engineering is probably aware but has not yet certified the fix - I will ask them on monday for the fix.

Kind regards
zxmaus
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clinfo(1M)						  System Administration Commands						clinfo(1M)

NAME
clinfo - display cluster information SYNOPSIS
clinfo [-nh] DESCRIPTION
The clinfo command displays cluster configuration information about the node from which the command is executed. Without arguments, clinfo returns an exit status of 0 if the node is configured and booted as part of a cluster. Otherwise, clinfo returns an exit status of 1. OPTIONS
The following options are supported: -h Displays the highest node number allowed to be configured. This is different from the maximum number of nodes supported in a given cluster. The current highest configured node number can change immediately after the command returns since new nodes can be dynami- cally added to a running cluster. For example, clinfo -h might return 64, meaning that the highest number you can use to identify a node is 64. See the Sun Cluster 3.0 System Administration Guide for a description of utilities you can use to determine the number of nodes in a cluster. -n Prints the number of the node from which clinfo is executed. EXIT STATUS
The following exit values are returned: 0 Successful completion. 1 An error occurred. This is usually because the node is not configured or booted as part of a cluster. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) SunOS 5.11 12 Mar 2002 clinfo(1M)