9 More Discussions You Might Find Interesting
1. Solaris
I am new to clustering enviornment , so can anyone tell me command or set of command or script that can determin whether any particular server is in cluster or not? (5 Replies)
Discussion started by: omkar.jadhav
5 Replies
2. Solaris
Hello experts -
I am planning to install a Sun cluster 4.0 zone cluster fail-over. few basic doubts.
(1) Where should i install the cluster s/w binaries ?. ( global zone or the container zone where i am planning to install the zone fail-over)
(2) Or should i perform the installation on... (0 Replies)
Discussion started by: NVA
0 Replies
3. UNIX for Dummies Questions & Answers
Hi friends pls give be a brief definition about clusters , i heard abt it its a server isnt any one have idea abt it
how to form a cluster ?
whts the configuration need for comning a cluster ?
wht os they used in it ?
How many servers can installed in a cluster ?
give me full detailes abt... (1 Reply)
Discussion started by: babinlonston
1 Replies
4. Solaris
Yesterday my customer told me to expect a vcs upgrade to happen in the future. He also plans to stop using HDS and move to EMC.
Am thinking how to migrate to sun cluster setup instead.
My plan as follows leave the existing vcs intact as a fallback plan.
Then install and build suncluster on... (5 Replies)
Discussion started by: sparcguy
5 Replies
5. High Performance Computing
Hi everyone,
I need to implement a cluster solution and i have no idea how to do it, we have 10 servers with quad core and high computation is our goal, please any documentation would be appreciated and also i am thinking of getting a HPC software from to redhat to implement it, i need your... (2 Replies)
Discussion started by: bensen
2 Replies
6. High Performance Computing
Dear All,
Can anyone explain about Pros and Cons of SUN and Veritas Cluster ?
Any comparison chart is highly appreciated.
Regards,
RAA (4 Replies)
Discussion started by: RAA
4 Replies
7. High Performance Computing
Provides a description of how to set up a Solaris Cluster Express cluster in a VirtualBox on OpenSolaris.
More... (0 Replies)
Discussion started by: Linux Bot
0 Replies
8. AIX
Hi All
I have two Pseries servers with AIX 5L as operating systems. HACMP cluster was there. For some reasons I have to change IP addresses of Servers. So How could I do it?
Ajay (2 Replies)
Discussion started by: ajay234
2 Replies
9. Linux
hey we doing a clean up here at work and throwing out all the old PC's. Not the best like 300Mhz or around there they are.
I've grab a few since I would like to teach myself how to cluster! Only one thing. I got no idea where to start.
I know do a search on google etc. But I was wondering... (3 Replies)
Discussion started by: woofie
3 Replies
MOD-ACTIVE(8) System Manager's Manual MOD-ACTIVE(8)
NAME
mod-active - batch processing of ctlinnd newgroup/rmgroup/changegroup
SYNOPSIS
mod-active [ ctlinnd_command_file ]
DESCRIPTION
mod-active is a perl script that updates the active file based on its input lines of ctlinnd newgroup, rmgroup and changegroup commands.
It pauses the server briefly while the existing active file is read and rewritten, which not only keeps innd from updating the active file
but also locks against other instances of mod-active.
The input to mod-active can come either from one or more files named on the command line, or from the standard input. Typically its input
is the output from the docheckgroups or actsync commands. Every line which contains the string "ctlinnd newgroup", "ctlinnd rmgroup" or
"ctlinnd changegroup", optionally preceded by whitespace and/or the path to ctlinnd, is noted for the update. Redundant commands, such as
a newgroup directive for a group that already exists, are silently ignored. All other lines in the input are also silently ignored.
After the new active file has been generated, the existing one is renamed to active.old and the new one is moved into place. The script
then displays the differences between the two files.
Any groups that were added to the active file are also added to the active.times file with the string "checkgroups-update".
BUGS
Though innd is paused while mod-active works, it is not inconceivable that there could be a conflict if something else tries to update the
active file during the relatively short time that mod-active is working. The two most realistic ways I can think of for this to happen are
either by an administrator concurrently doing a manual ctlinnd command, or by innd receiving a control message, then mod-active pausing the
server, then the control message handler script that innd forked running its own ctlinnd command while mod-active is working. I've been
using mod-active regularly for several years, though, and never had either problem.
HISTORY
Written by David C Lawrence <tale@isc.org>.
SEE ALSO
active(5), actsync(8), ctlinnd(8), innd(8).
MOD-ACTIVE(8)
