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Full Discussion: Comparing Cluster Members
Special Forums UNIX and Linux Applications High Performance Computing Comparing Cluster Members Post 302395744 by jchurch on Tuesday 16th of February 2010 10:24:58 PM
Old 02-16-2010
Question Comparing Cluster Members

Does anyone know of a good utility that will do a binary compare of all the files on two cluster members? We are looking for something we can run on a monthly batch basis to monitor for configuration drift between AIX/HACMP and Solaris/VCS cluster member pairs, use as an ad hoc diagnostic tool when an app runs fine on one cluster node but not the other, or to compare test and prod systems to figure out why a problem cannot be reproduced in the test environment.

I realize tight system management procedures are the best preventative, but when you have eight sysadmins with root (sudo) access and another dozen people with varying access to app directories, some type of drift is inevitable. We need something that can at least help us prove that the machines are identical so we can direct diagnostic efforts back to the application.
 

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cmscancl(1m)															      cmscancl(1m)

NAME
cmscancl - gather system configuration information from nodes with Serviceguard installed. SYNOPSIS
cmscancl [-n node_name]... [-s|-o output_file] DESCRIPTION
cmscancl is a configuration report and diagnostic tool intended only for use by HP Support Personnel. It gathers system software and hard- ware configuration information from a list of nodes, or from all the nodes in a cluster. The information that this command displays includes LAN device configuration, network status and interfaces, file systems, LVM configuration, link-level connectivity (HPUX only), IPv4/IPv6 connectivity, and the data from the binary cluster configuration file. This command can be used as a troubleshooting tool or as a data collection tool. This command is a Perl script which gathers system configuration information by executing various OS commands or tools. It uses the cmexec command to gather information from remote nodes. The -n option can be used to specify a list of nodes to be scanned, the nodes to be scanned do not need to be a member of a cluster. If the -n option is not specified, it will scan all the nodes in the local cluster. By default, the output of this command will go to the file /tmp/scancl.out. If the file /tmp/scancl.out already exists, the old file will be saved in /tmp/scancl.out.old. The -o option can be used to redirect output to a specified output file. If the -o option is not specified, output will go to the default output file /tmp/scancl.out. The -s option can be used to direct all output to the screen, instead of to an output file. Options cmscancl supports the following options: -n node_name... Specify the node(s) to be scanned. If this option is not specified and there is a cluster configured, all the nodes in the cluster will be scanned. If this option is not specified and there is no cluster configured, only the local node will be scanned. -o output_file Write configuration information to a specified output file. If this option is not specified, the information will be directed to stdout. -s Display the configuration information to the screen only. This option cannot be used in conjunction with the -o option. The output from this command contains the following information: LAN device configuration (On HP-UX, output from lanscan; On Linux, output from ifconfig) network status and interfaces (output from netstat) file systems (output from mount) LVM configuration (contents of /etc/lvmtab file) LVM physical vg information (contents of /etc/lvmpvg file) link-level connectivity (HP-UX only) (output from linkloop) IPv4/IPv6 connectivity (results from ping (and ping6 on Linux)) binary configuration file data (output from cmviewconf) RETURN VALUE
cmscancl returns the following value: 0 Successful completion. 1 Command failed. EXAMPLES
To gather the configuration information from node1 and node2 and to save the output in file /tmp/scancl.log: cmscancl -n node1 -n node2 -o /tmp/myscancl.log To gather the configuration information from all the nodes in the cluster and save the output to the file: /tmp/scancl.log: cmscancl -o /tmp/myscancl.log To gather the configuration information from all the nodes in the cluster and display the output on the screen: cmscancl -s To gather the configuration information from all the nodes in the cluster and save the output to the file /tmp/scancl.out: cmscancl AUTHOR
cmscancl was developed by HP. SEE ALSO
Linux: cmviewcl(1), mount(8), netstat(8), ping(8), ping6(8) HP-UX: cmviewcl(1m), lanscan(1m), linkloop(1m), mount(1m), netstat(1), ping(1m) Requires Optional Serviceguard Software cmscancl(1m)
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