Question { 3988 }

how to give quotas on cpu

Answer

The quota system (available only on ufs and vxfs
filesystems) is built around limits on the two principal
resources of a filesystem:

* inodes
* data blocks

For each of these resources, users can be assigned quotas.
Two limits can be used: hard limit and soft limit. The hard
limit represents an absolute limit on the resource.
Associated with the soft limit is a time limit set by the
administrator. Users can exceed the soft limits for a
limited amount of time.
In summary, for each user, you can assign quotas (soft and
hard limits) for both blocks and inodes. Also a time limit
can be set indicating how long users can exceed the soft limits.
Remember: only super-user (root) can set disk quota.

*
Create a quotas file
The filesystem is /acct/s1. If quotas is already
there, goto the next step.

# su -
passwd:
# cd /acct/s1
# /usr/bin/touch quotas
# /usr/bin/chmod 600 quotas

*
Set or reset disk quota for users
Assume each student has 100MB (102400KB, we use
100000KB here) disk quota and when he uses 95MB, we need
remind him that he reaches his limit. Also a student cannot
create more than 10000 files (including directoies) and the
soft limit is 9000. So the hard data block limit is 100000,
the soft data block limit is 95000; the hard inode limit is
10000, the soft inode limit is 9000.

1. Set disk quota for a proto-user

Select a proto-user name. For example, csestudent.

# /usr/sbin/edquota csestudent

The editor invoked is vi unless the EDITOR
environment variable specifiles otherwise.

fs /acct/s1 blocks (soft = 0, hard = 0) \
inodes (soft = 0, hard = 0)

Modify it as below:

fs /acct/s1 blocks (soft = 95000, hard = 100000) \
inodes (soft = 9000, hard = 10000)

Save it and quit.

2. Set disk quota for all users

Create the following script to set disk quota
for all users:

# vi .EQ
#!/bin/sh
LOGINS=`/usr/bin/ls | grep -v quotas | grep
-v lost+found \
| grep -v csestudent`
for LOGIN in $LOGINS;
do
/usr/sbin/edquota -p csestudent $LOGIN
done
# /usr/bin/chmod 500 .EQ
# ./.EQ

3. Set soft time limit

The soft time limits are initially set to the
values defined for DQ_FTIMELIMIT and DQ_BTIMELIMIT in
/usr/include/sys/fs/ufs_quota.h. The default value is
7*24*60*60 -- 1 week. It is fine for general use, otherwise
enter:

# /usr/sbin/edquota -t

*
Turn quotas on

# vi /etc/init.d/quotaon
#!/bin/sh
/usr/sbin/quotacheck /acct/s1
/usr/sbin/quotaon /acct/s1
# /usr/bin/chmod 500 /etc/init.d/quotaon
# vi /etc/rc2.d/S99quota
#!/bin/sh
if [ -x /etc/init.d/quotaon ]; then
echo 'Starting quota...'
/etc/init.d/quotaon &
fi
# /usr/bin/chmod 500 /etc/rc2.d/S99quota
# /etc/rc2.d/S99quota

*
Give warning to users
Because no warning is given when the user has exceeded
the soft limit, so add the following to /etc/cshrc:

#
# check disk quota when users login
#
set groupline=`/usr/bin/groups`
if ($groupline[1] == student || $groupline[1] ==
students) then
/usr/sbin/quota -v
endif
unset groupline

Question { IBM, 4232 }

which hardware u using present

Answer

It all depends on the company. We are using V440, 220R 220.
u CAN check them online for the recent servers from
http://www.sun.com/bigadmin

Question { 5434 }

How many secondary groups allows to add..?

Answer

The NGROUPS_MAX value defaults to 16, and the absolute
maximum is 32.

Question { Wipro, 4473 }

how to uninstall bundle of patches?

Answer

patchrm [-f] [-G] [-B backout_dir]
[-C net_install_image | -R client_root_path | -S service]
[-t] patch_id

Question { emc2, 3777 }

how many servers are maintaining and what is your 'user
base' in the organization?------friends please tell me in
what way the answer should be?

Answer

Your company many have hundreds or thousands of servers.
Tell them that you give remote support and our team is
responsible for 100 ish servers something like that

Question { Verizon, 7070 }

How to add a patch on multiple servers(400) at a time.

Answer

By default, when you download and apply patches, those
patches are in effect for the entire target installation.
Every domain and server that is configured to run from such
an installation runs against the patches applied to it.
Sometimes, however, individual servers or domains within a
production environment need to run at different patch
levels. To accommodate this need, Smart Update enables you
to point individual domains, servers, or clusters at
specific patches that are not necessarily in effect
installation-wide.