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.
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)
how can I find cpu usage memory usage swap usage and
I want to know CPU usage above X% and contiue Y times and memory usage above X % and contiue Y times
my final destination is monitor process
logical volume usage above X % and number of Logical voluage above
can I not to... (3 Replies)
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
... (4 Replies)
I am running a Dell PE R815 with 4 x AMD 12 core CPUs with 128GB of RAM and a RAID 5 array of 6 SAS disks. This is an HPC application and is definitely CPU bound, however once I run 16 of these processes (thus pinning 16 cores) the work performed slows down dramatically, to maybe 5 or 10% of what... (2 Replies)
Hi,
How to find the cpu configuration details of Cores, Speed MHz, virtual processors for the following servers:
LINUX OS Servers:
Linux 2.6.9-89.0.3.ELsmp #1 SMP Sat Jun 13 07:05:54 EDT 2009 i686 i686 i386 GNU/Linux. (Cores, Speed, Processor)
Linux 2.6.18-164.el5 #1 SMP Tue Aug 18... (5 Replies)
Hello,
Looking for some help. I am trying to gather data at each server showing when the physical CPU is being used the most based on a weekly timeframe.
I know this data can be seen through NMON but with multiple servers in our environment it could take a real long time. is there a easier... (4 Replies)
Hi All,
Yesterday my Linux server went panic and even a small command took a lot of time to run.
When i monitored pl find the below output
Cpu(s): 0.1%us, 98.4%sy, 0.0%ni, 1.5%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
the time spent on kernel mode is 98 % and also idle time is around 1.5 %...... (4 Replies)
I am looking for a way to log and graphically display cpu and RAM usage of linux processes over time. Since I couldn't find a simple tool to so (I tried zabbix and munin but installation failed) I started writing a shell script to do so
The script file parses the output of top command through... (2 Replies)
Hi all
I was wondering if its possible to write a script to keep CPU usage at 90%-95%? for a single cpu linux server?
I have a perl script I run on servers with multple cpu's and all I do is max all but one cpu to get into the 90'% utilised area. I now need a script that raises the CPU to... (4 Replies)
Discussion started by: sudobash
4 Replies
LEARN ABOUT CENTOS
clubak
CLUBAK(1) ClusterShell User Manual CLUBAK(1)NAME
clubak - format output from clush/pdsh-like output and more
SYNOPSIS
clubak [ OPTIONS ]
DESCRIPTION
clubak formats text from standard input containing lines of the form "node:output". It is fully backward compatible with dshbak(1) but
provides additonal features. For instance, clubak always displays its results sorted by node/nodeset.
You do not need to use clubak when using clush(1) as all output formatting features are already included in. It is provided for other
usages, like post-processing results of the form "node:output".
Like clush(1), clubak uses the ClusterShell.MsgTree module of the ClusterShell library (see pydoc ClusterShell.MsgTree).
INVOCATION
clubak should be started with connected standard input.
OPTIONS --version
show clubak version number and exit
-b, -c gather nodes with same output (-c is provided for dshbak(1) compatibility)
-d, --debug
output more messages for debugging purpose
-L disable header block and order output by nodes
-r, --regroup
fold nodeset using node groups
-s GROUPSOURCE, --groupsource=GROUPSOURCE
optional groups.conf(5) group source to use
-G, --groupbase
do not display group source prefix (always @groupname)
-S SEPARATOR, --separator=SEPARATOR
node / line content separator string (default: :)
-F, --fast
faster but memory hungry mode (preload all messages per node)
-T, --tree
message tree trace mode; switch to enable ClusterShell.MsgTree trace mode, all keys/nodes being kept for each message element of the
tree, thus allowing special output gathering
--color=WHENCOLOR
whether to use ANSI colors to surround node or nodeset prefix/header with escape sequences to display them in color on the terminal.
WHENCOLOR is never, always or auto (which use color if standard output refers to a terminal). Color is set to [34m (blue foreground
text) and cannot be modified.
--diff show diff between gathered outputs
EXIT STATUS
An exit status of zero indicates success of the clubak command.
EXAMPLES
1. clubak can be used to gather some recorded clush(1) results:
Record clush(1) results in a file:
# clush -w node[1-7] uname -r >/tmp/clush_output
# clush -w node[32-159] uname -r >>/tmp/clush_output
Display file gathered results (in line-mode):
# clubak -bL </tmp/clush_output
2. Another example, iterate over node* text files in current directory and gather characters count for all of them:
# find -name "node*" -exec wc -c {} ; | awk '{ gsub("./","",$2); print $2": "$1 }' | clubak -bL
node[1,3]: 7
node2: 9
SEE ALSO clush(1), nodeset(1), groups.conf(5).
BUG REPORTS
Use the following URL to submit a bug report or feedback:
https://github.com/cea-hpc/clustershell/issues
AUTHOR
Stephane Thiell, CEA DAM <stephane.thiell@cea.fr>
COPYRIGHT
CeCILL-C V1
1.6 2012-03-28 CLUBAK(1)