I wrote a wrapper for SSH that will run commands on other servers in parallel. It accepts a file, which contains host names.
I don't know about ping'ing 700 in under a second, but in theory it should work. But come to think of it, you wouldn't run the ping command on remote hosts by running commands on the remote hosts.
Anyway, here is an idea:
Code:
root@ms:/>gdsh
Usage: [[-s working_col_file|OS_name] | -w nodename{,nodename}] -c command
Required Parameters:
-s or -w and -c
Optional Parameters:
[-n]
[-d] [-h] [-n] [-T] [-v]
Where:
-C
Collapses output. Used with dshbak.
-c specifies the command to run
Required.
-n
No Parallel mode. By default the command is run on every node at the same time.
-s
Specify a working collective file OR specify an OS name. Use uname -s to specify
a working collective file with that postfix. ie. /.gwcoll.AIX.
-w nodename{,nodename}
Default: ALL nodes
Options that affect only how the script runs:
-d
Enable debug mode. Variable contents will be printed. May be specified more than once.
-h
Prints this help screen.
-q
quiet. Limits output to the essentials.
-T
Testing mode. NO actual work will be done.
-v
Verbose mode. May be specified more than once.
Notes:
One of -s or -w is required.
Piping the output to dshbak -c will group like results together.
Use -C with dshbak, or you will get no output.
-c must be the last flag on the command line.
Example execution statements:
gdsh -s /.gwcoll.AIX -c date
gdsh -s AIX -c date
gdsh -C -s AIX -c date | dshbak -c
gdsh -s all.Linux_HP-UX -c date
gdsh -C -w unxn_sw,wpgux005 -c "date" | dshbak -c
There is a file system in server1 which is mounted on different file system on server2.
Filesystem kbytes used avail capacity Mounted on
server1:/users/user1
7047581 5994192 982914 86% /u01
/data/datafiles/user1
The data in... (1 Reply)
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Hello Friends,
On one of my Solaris 10 box, CPU usage shows 100% using "sar", "vmstat". However, it has 4 CPUs and prstat and glance are not showing enough processes to justify high CPU utilization.
=========================================================================
$ prstat -a
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Hi,
How to find the cpu configuration details of Cores, Speed MHz, virtual processors for the following servers:
LINUX OS Servers:
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When i monitored pl find the below output
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I was wondering if its possible to write a script to keep CPU usage at 90%-95%? for a single cpu linux server?
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Discussion started by: sudobash
4 Replies
LEARN ABOUT DEBIAN
nodename
nodename(4) File Formats nodename(4)NAME
nodename - local source for system name
SYNOPSIS
/etc/nodename
DESCRIPTION
When a machine is standalone or its IP address is configured locally, the /etc/nodename file contains the system name. By convention, the
system name is the same as the hostname associated with the IP address of the primary network interface, for example, hostname.hme0.
If the machine's network configuration is delivered by the RPC bootparams protocol, the /etc/nodename file is not used, as the system name
is delivered by the remote service.
Given a system name value, regardless of source, the uname utility invoked with the -S option is used to set the system name of the running
system.
If the machine's network configuration is delivered by the DHCP protocol, the /etc/nodename file is used only if the DHCP server does not
provide a value for the Hostname option (DHCP standard option code 12).
A system name configured in /etc/nodename should be unique within the system's name service domain in order to ensure that any network ser-
vices provided by the system will operate correctly.
Given a system name value, regardless of source, the uname utility invoked with the -S option is used to set the system name of the running
system.
EXAMPLES
Example 1: Syntax
The syntax for nodename consists of a single line containing the system's name. For example, for a system named myhost:
myhost
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO nis+(1), uname(1), named(1M), ypbind(1M), attributes(5)NOTES
The nodename file is modified by Solaris installation and de-installation scripts.
SunOS 5.10 9 Feb 2004 nodename(4)