a multi-objective bisexual reproduction genetic algorithm for ...

99
Add a group for globus by executing:
groupadd -g 900 globus
Add the user globususer (with password globususer) by executing:
adduser -u 900 -g globus -d /home/globususer -n globususer
Change the globususer ID’s password from globususer to pwsbm1 or other
password by executing:
passwd globususer
B.2.3 Installing Network Time Protocol (NTP)
NTP needs to be installed because the grid needs the clocks on the systems to be
synchronized. The security process creates proxy certificates that are valid for specific
times. If the systems do not have their clocks synchronized, then the users may not be
able to use the grid, because the proxy certificates may look like they have expired or
are not yet valid.
On all of the grid machines, install NTP as follows using the root ID:
$ rpm -ivh /usr/src/ntp-4.1.1-1.i386.rpm
If the package is already installed as a part of the Linux distribution, ignore the
error message and continue to set up the NTP server. Proceed by setting up the server
and daemons.
Edit the file /etc/ntp.conf on the machine designated to be the time server,
machine m2, and leave the following four lines as the only un-commented ones,
commenting all others with a leading “#” character:
server 127.127.1.0 # local clock
fudge 127.127.1.0 stratum 10
driftfile /etc/ntp/drift
broadcastdelay 0.008
Also, on the NTP server machine (m2), use the settings ntsysv command to
enable the NTP daemon (ntpd) on the next reboot. We can also start the Red Hat
Service Configuration tool by clicking on Main Menu System Setting Server
Setting Services. Scroll down the list of services on the left side until we get to the
ntpd service. Click on the ntpd service and click Start to run it.
On the other machines in the grid (m1 and m3), change the file /etc/ntp.conf to
leave only the following lines un-commented:
server m2.kmitnb.ac.th
driftfile /etc/ntp/drift