High reliability web server - cluster, redundancy, etc Post: 302302261

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Special Forums UNIX and Linux Applications High Performance Computing High reliability web server - cluster, redundancy, etc Post 302302261 by kipperjp on Monday 30th of March 2009 01:38:16 PM

03-30-2009

Registered User

Keep in mind that clustering does not mean high availability. CLustering is sharing resources with multiple machines. What you need to look into is syncing and failover mechanisms so that 2 web servers at different locations are mirrored copies so that if one goes down, dns is routed to the other server.

I am kind of down this route myself and learning as I go. Be nice to utilize an HA consultant as trial and error can be costly.

kipperjp

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LEARN ABOUT SUNOS

list-virtual-servers

asadmin-list-virtual-servers(1AS)				   User Commands				 asadmin-list-virtual-servers(1AS)

NAME

       asadmin-list-virtual-servers, list-virtual-servers - gets the virtual servers

SYNOPSIS

       list-virtual-servers --user admin_user [--password admin_password] [--host localhost] [--port 4848] [--secure|-s] [--passwordfile filename]
       [--terse=false] [--echo=false] [--interactive=true]

       Gets all the virtual server elements. This command is supported in remote mode only.

OPTIONS

       --user		       authorized domain application server administrative username.

       --password	       password to administer the domain application server.

       --host		       machine name where the domain application server is running.

       --port		       port number of the domain application server listening for administration requests.

       --secure 	       if true, uses SSL/TLS to communicate with the domain application server.

       --passwordfile	       file containing the domain application server password.

       --terse		       indicates that any output data must be very concise, typically avoiding human-friendly sentences and favoring well-
			       formatted data for consumption by a script. Default is false.

       --echo		       setting to true will echo the command line statement on the standard output. Default is false.

       --interactive	       if set to true (default), only the required password options are prompted.

       Example 1: Using list-virtual-servers

       asadmin> list-virtual-servers --user admin --password adminadmin
       --host localhost --port 4848
       Command list-virtual-servers executed successfully

EXIT STATUS

       0		       command executed successfully

       1		       error in executing the command

       asadmin-create-virtual-server(1AS), asadmin-delete-virtual-server(1AS)

J2EE 1.4 SDK							    March 2004					 asadmin-list-virtual-servers(1AS)