Hello list,
Has anyone addressed the issue of how to do a planned DR test? Here are
the assumptions:
-) There is a production z/VM+Linux LPAR at the primary data center.
-) There is a DR site where the production LPAR volumes, etc. are
replicated.
-) A planned DR test is necessary.
In a real
9212 Gordon WolfeManaging a Penguin Farm on the VM
Prairie
is too fancy for its own goodG.
and if you can get by the fanciness, it's an excellent, real-world
presentation.
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
Sam,
Any Ideas?
Try using YaST = Network Services = LDAP Client
Then you won't have to much around in config files, rather, you should
just have to specify the LDAP server.
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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Sam,
the Yast interface assumes that you
are using a Open-LDAP server, which we are not.
I agree that YaST assumes OpenLDAP when setting up things as a server.
However, I have successfully used YaST to configure the client to point to
an IBM Tivoli Directory Server. So maybe it's something on
Tom,
That kind of implies that I can't have both 31 and 64 bit products on
the installation server at the same time.
They can exist on the same server, just not in the same directory. I put
the 31-bit iso images in one directory, say /data/sles9 and the 64-bit iso
images in another, say
Tom,
That didn't seem to work that a way.
Hmmm - are you sure you have the latest script? I swatted a couple of
bugs - the latest is on http://mikemacisaac.com/mksles9root
(Note: I may be giving up on this mikemacisaac.com experiment and thus am
hoping to have this script officially hosted on
Hello list,
Has anyone successfully installed SLES-9 on a FLEX-ES system? We have
seen at least two instances where the second half of the install process
(after IPLing from disk) fails. It seems to be a network issue for which I
don't have a lot of details at this point. But I was just
James,
I am getting a failure when I try to set up a cloning server per the
book ...
So this is just the first install of the controller?
Device 0.0.9000 configured
qeth: received an IDX TERMINATE with cause code 0x4e
qeth: Initialization in hardsetup failed! rc=-5
Do you have the user ID to
I might have been a bit harsh in the last mails,
good start ...
but
oops! but negates the previous statement. Perhaps Sorry Neale, you're
code is not utter crap
I've never looked at the code but have been using Neale's cpint for years
and it has always worked perfectly for me. Thanks for a
Matt,
Due to vendor issues, we here have been moving back and forth
between 31-bit and 64-bit SLES9, using the LPAR to Virtual
Servers Redbook as our guide.
Do you have two controllers? Because of the churn of moving from 31-bit
to 64-bit, some folks are in the same situation you are.
James,
Looks like something got spanked during the patch installation process.
Just checking the obvious - your ID still has privilege to the VSWITCH,
correct? (Q VSWITCH VSW1 ACC)
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
Tom,
Yes, you can just rename the files so mksles9root is happy.
I'm not really sure of the differences. We get our ISO images from a
common FTP server within IBM. Here are the details of mine:
# ls -l *SP-2*
-rw--- 1 root root 612798464 Jul 25 09:15
SLES-9-SP-2-s390x-GM-CD1.iso
James,
Sorry for the delay in getting to this question - was in an all-day
meeting yesterday.
The methodology in that book creates essentially a 2 disk system. A
system
and a page disk. That is bad of course
Yes, I understand that argument. We used a one volume root file system
under the
Is there a freely available (without support) version of SUSE Linux for
390? My company would like to evaluate it and then decide whether we
want to run a supported production Linux image.
There is. Start at:
http://www.novell.com/products/linuxenterpriseserver/eval.html
If you have z/VM,
Lior,
Tried to download the script but http://mikemacisaac.com seems to
have expired.
Alternate location?
http://linuxvm.org/patches/ - at the top is mksles9root.sh
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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Just be aware that cmsfs doesn't work with SuSE SLES9x.
Huh? It has worked for me - the cmsfs-1.1-0.s390.rpm specifically.
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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So, can anyone tell me where to find this .rpm?
ftp://ftp.bmc.com/pub/cmsfs/
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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Does anyone have an idea on how to recover/mount a LVM file system on
another system?
I haven't done this recently, but you can try:
(1) Start an installation on the user ID in question (if you have an
parameter file it helps because you don't have to answer all the
networking questions - if you
Hello list,
Has anyone gotten the Patch CD Update function to work? We have some
vanilla SLES9 images and some at SLES9+SP2. We have a beta (RC2) copy of
SP3 which consists of 3 .iso CDs. We want to upgrade some of the images to
try out SP3.
(1) I mount the CDs loopback and make them available
I had to merge the cd's into one cd and point YaST update to
the new merged file.
After that the Patch Update process worked for SLES9 SP2.
Oh, yes, I now recall this thread not too long ago. Thanks Terry
But the function says Patch CD Update, not Patch merged CDs Update. As
I recall It
pass the kernel parameter max_loop=nn to
increase the number of loopback devices.
True.
I believe the bigger issue is that NFS usually does not cross mount
points, so an install/patch tree with 9 mount points could not be served
up by most NFS servers (yes, it could be served up by FTP
Steve,
I have this written down for a RHEL4/DB2 exercise given this year:
Before installing DB2 V8.2, you must install all available
compat-libstdc++ RPM-packages.
# rpm -ivh
/mnt/rhel4x/RedHat/RPMS/compat-libstdc++-295-2.95.3-81.s390x.rpm
# rpm -ivh
Hello list,
I believed there is a bug in the SLES9 Patch CD Update process (both in
SP2 and SP3). If you are trying to update your systems, the following
statement is in the README file of SP3 CD1 is pertinent:
2.8 Updating to a Service Pack Using Patch CD Update
Hello list,
I updated the mksles9root.sh script. It now offers the following old and
new features:
-) Creates a SLES9 install tree for 31-bit or 64-bit .iso images per SuSE
docs
-) Creates a merged SLES9 install tree with SP1, SP2, or SP3 (new - SP3 is
still a release candidate)
-) Allows for
But for a beta, I'll append the script right here.
Whoops, that wasn't the best idea. Many of the lines were wrapped by the
listserver.
Mark pointed this out and I sent him a copy. Hopefully it will be up on
linuxvm.org soon.
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
Yu,
does anybody have books, red-books, primers, web-sites or
recommendations for new zVM system programmers?
I'm biased, but I would recommend the he redbook z/VM and Linux on
zSeries: From LPAR to Virtual Servers in Two Days on the Web at:
http://www.redbooks.ibm.com/abstracts/sg246695.html
Make the disks available to the SLES9 system
Scan all disks to find volume groups
# vgscan
your LVM1 should be found
Activate the lvm volume group.
# vgchange -ay lvm
Use the vgconvert command to convert the volume group to the lvm 2 format
metadata. Be
warned that it's not always possible
Hello list,
The Linux on zSeries Device Drivers manual (Oct 14, 2005), in chapter
19, starts with the statement: The cooperative memory management (CMM)
allows an external entity, such as
the z/VM resource monitor VMRM, to reduce the memory size of a Linux
system.
But I look at the VMRM
Are LPI/RHCE-type certifications worthwhile?
I would agree with the others. I took the RHCE week course where you are
prepped for four days and take the test on Friday. I *barely* passed the
second half of the test (suggestion: study the security section well -
that is one area where the prep
The reason Mike did his mksles9root script to prepare the file tree is
that this way you install the latest versions from the service pack
rather than the older base levels.
Yes, that and because working with individual loopback-mounted-ISO-CDs
seems to be tricky at best (and if you want to
Is there a way to get vmcp to return the CP return code rather than 1?
hcp behaves as I'd expect:
# hcp q linux04
HCPCQU045E LINUX04 not logged on
# echo $?
45
But vmcp seems to return only 0 or 1:
# vmcp q linux04
HCPCQU045E LINUX04 not logged on
Error: non-zero CP response for command 'Q
Thanks for the responses:
If you don't like either one then write your own command.
Two is probably enough :))
with their head and heels in the sand.
Interesting - I don't want to know about it but if I must know about it
then I just don't want it. :))
You can check for return code 1 and
Bernie,
I am currently stuck on SWAPGEN. I get this message :
Error 91 from CP DEFINE VFB-512 AS 101 BLK 524288:
Any ideas how to get around this error ?
Did you allow VDISK for users? Try:
== q vdisk userlim
VDISK USER LIMIT IS INFINITE
If you didn't, this is typically set in the SYSTEM
We have a guest that appears to be running fine, however we can't access
it by any of the traditional means (ssh, telnet, ftp, http, smb). I can
log on to it from VM and issue commands but nothing from outside (like
from my workstation). I can ping the guest from outside and it appears
Bernard,
2.The script mksles9root.sh downloaded from linuxvm.org/Patches/S390
needs to be modified to reflect Novell's SP3 iso names ie:
from SLES-9-SP-3-s390x-GM-CDn === SLES-9-SP-3-s390x-RC4a-CDn
This was done - about a week ago.
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
Bernard,
from SLES-9-SP-3-s390x-GM-CDn === SLES-9-SP-3-s390x-RC4a-CDn
Whoops, I replied too fast.
Actually it was changed in the other direction. There was a report that
the *GM* file names were correct. I guess RC4a == the golden master, so
it should not matter.
Can anyone from SuSE
John,
Should it be SP3's in tree sp3root, and SP1's in tree sp1root?
Yes, you are correct. Good catch.
I haven't checked where they actually are put; not up on
shell scripting.
It's a typo in the help, but not in the name of the tree that actually
gets built.
I have asked Mark if he can
Lee,
But when I try to run it on my SLES9 SP3 s390 system, I get:
leesles9:/iso # ./mksles9root.sh
: bad interpreter: No such file or directory
You are right. I downloaded it from linuxvm.org and got that too:
./mksles9root.marks.sh
: bad interpreter: No such file or directory
It looks like
Bernard,
/linuxrc: line 500: 249 Segmentation fault $CONDOM /bin/linuxrc
I want to say I've seen this once. Perhaps you ran out of memory?
In the book we recommend temporarily setting the size of the machine to
384M from 256M for the install. That worked fine for us on SP1, but for
Mark,
I must have a _tremendous_ amount of character in that case. :)
I don't know - I think using autoyast is cheating :))
On a serious note, please do tell us about autoyast. I thougth the
consensus was that it didn't work on s390[x]. I've never tried it.
Mike MacIsaac [EMAIL PROTECTED]
William,
The third window alerts me that Red Hat Enterprise Linux 4 disk 3
needed to install packages
...
I cannot find how to direct Red Hat's tools to find the materials,
which are -already- mounted in a subdirectory under /mnt. And
advice on how to do so?
How did you create the
How about an all or nothing solution, for example:
CP DEFINE/SET VSWITCH switchname UNRESTRICTED
I will second that motion ...
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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Simon,
I am probably among a tiny minority of customers who
rely on the combined Directory Maintenance / Password
Management product known as XEDIT USER DIRECT :-)
Our setup is a bit more sophisticated - we also use the DIRECTXA and
occasionally even the DISKMAP tools. :))
Mike MacIsaac
Bernard,
and what if volume 2061 is a 3390 mod 9 , which can hold several mini
disks. What do I do then ?
By chance are you mixing up virtual and real addresses? Are 2500-2505 and
2061 real addresses?
If you are using MDISKs and not DEDICATEs in your user directory entry
(which I think most
Rich,
OK, tried that. The yast screen comes up, and a message flashes (way to
fast to read), then it terminates.
Try going into yast and invoking Software = Change Source of Installation
You should see some entries pointing to where you installed from. You can
replace these (I would
Does anyone have any information on the new corrected
sles9 sp3 CD? I noticed there is a new corrected CD1
labeled CD1a that is now available on the Novell site.
What are the correct file names and md5sums for SLES9 SP3, s390 and s390x?
Can someone from SuSE please clarify? Pretty please?
I
Someone replied to me off-list that a PMR was opened and a reply from SuSE
was:
The error was: the media label which is written into the header part
of the ISO image was wrong, causing CDs burned from it to be
misidentified and YaST not accepting such CD as a SUSE patch CD.
Perhaps the
It has this file /dosutils/install/install.bat that appears
to be Windows oriented. What didn't work with that?
Just glancing at the code, it doesn't seem to handle any service packs,
which would make sense since it is on the vanilla CDs. So I looked at
.../sles9xsp3root/sp3-9/CD1 but I don't
Bernard,
Has anyone managed to get this VMCP command to work ?
VMCP QUERY NSS ALL MAP
# vmcp QUERY NSS ALL MAP
FILE FILENAME FILETYPE MINSIZE BEGPAG ENDPAG TYPE CL #USERS PARMREGS
VMGROUP
0036 BC05DCSS DCSS N/A1 23FFF SR A 1 N/A N/A
0030 CMS NSS
Hello linux-390-ers and vmesa-l-ers,
A draft of the updated redbook z/VM and Linux on zSeries: From LPAR to
Virtual Servers in Two Days is available for review. Jin Xiong and I have
been updating it for z/VM 5.2 and SLES9 SP3. The new proposed title is
z/VM and Linux on IBM System z: The
Tim,
is the -e meaningful on a Linux system
I believe that is recommended in the SuSE documentation. On Linux the -e
flag is used to enable interpretation of the backslash-escaped characters.
And there does not appear to be any more backslashed characters in the
script, so you can probably
Tim,
I was planning on using FTP rather than NFS
I believe there is a feature (or bug) with installing via FTP whereby the
location specified in the install is relative to the home directory of the
FTP user. So if the FTP user were tim and the home directory is /u/tim,
then if you specify
It seems to me that there must be a better way to have a
driver loaded at boot time.
From The Virtualization Cookbook, section 7.6.9 (I believe Bruce Hayden
helped on this one):
The vmcp module/command allows z/VM CP commands to be issued from Linux.
...
To enable it, edit the file
I don't know how/when this directory has to be created
I believe it is documented in one of the README files on CD1 of SP3. Also,
see chapter 6 of the Virtualization Cookbook
(http://linuxvm.org/present/misc/virt-cookbook-1.pdf). If you have the 6
vanilla SLES9 ISO images and the 3 SP3 ISO
I don't know why the CD-ROM would be greyed out on the Load from
menu.
The only time I've seen it is when I am *not* in Single-object-operations
mode. Are you sure you are in that mode? You should see a window in a
window when you get into it.
Mike MacIsaac [EMAIL PROTECTED] (845)
Tim,
it's the next step (where you choose local CD-ROM, HMC
CD-ROM, or FTP server) that has issues.
I believe it is looking for the suse.ins file which is in the root
directory of CD1. If you're pointing to an install tree via FTP, it might
be here:
# cat
I then run a restore job from z/OS that restores linux7:/mnt/linux5
using Upstream. Finally, I clean up my links to make sure LINUX5 has
its disk all to itself:
umount /mnt/linux5
echo 0 /sys/bus/ccw/devices/0.0.1100/online
hcp DETACH 1100
This a just a guess - but - try a sync before the
CP INDICATE QUEUE will show the quest in Q3
(Robot with flailing arms: Danger Will Robinson!! :)) I'm not a VM
perfornace guru, but will ask some of the basic questions.
How much central storage and how much expanded storage do you have? What
does Q ALLOC PAGE show? What does Q SRM show?
Mike,
WebSphere will intall into /opt/IBM/WebSphere. A full mod 3 should be
enough. With V6 profiles, you could have the r/w data written to a
different file system if you want, or you could let it default and thus
have binaries and apps mixed (then a mod 3 may not be large enough). DB2
will
I have an MQ V6 server on SLES9+SP3. It looks like the licenses directory
goes to /opt/mqm also:
# ls /tmp
sysconfig-update/ vncserver.log
# ls /opt/mqm/licenses/
Chinese.txt* Italian.txt* LA_es LA_pt LI_en LI_pl
Portuguese.txt*
...
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
Tim,
Does anyone have a log, or other documentation, on the sequence of
events I'm supposed to see in an install of SLES9 via FTP?
It's documented in the Virtualization Cookbook for an NFS install. The
only difference with the FTP install will be early in the process on the
3270 session after
Tim,
I haven't gotten to the software selection menu. I get, in the ssh Yast
panel...
A message under Partitioning No automatic proposal possible. Specify
mount points manually in the 'Partitioning' dialog
So you are able to FTP into your FTP server because you get past the
networking
is there anything else that needs to be done for that
user to use this network construct?
Of course you have to give the user ID a triplet on the VSWITCH and couple
it. I put this line:
NICDEF 600 TYPE QDIO LAN SYSTEM VSW1
in a PROFILE in the USER DIRECT file. Then when you logon, both tasks
Then, while trying to ping the gateway, I get 100% packet loss and:
Warning: The gateway address 172.4.1.1 did not ping.
So you have *never* gotten TCP/IP access to any Linux yet? Is z/VM on the
network and using the same gateway and OSA card? If so then you know the
gateway is up and on the
Tim,
but /usr needs to be more than 2.2GB is it better to reconfigure
the devices in the Shark to combine two or three into a
larger volume, or is this what LVM is about
Either way, but I'm guessing LVM is more in your control. You can create
a logical volume of two 3390-3s to give you 4.4GB
Tim,
Is it normal for it to shut down
right after installation finishes?
Yes, and did you finish the installation? There are two halves to a SLES
installation (unlike RHEL). For the second half you have to IPL from your
root (boot) file system and complete the YaST install questions.
Mike
Stephen,
When will we get a for DEBIAN version of this redbook? :)
Suffice it to say that is unlikely. I'm guessing the smiley implies that
the question is somewhat rhetorical.
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
Mel,
I haven't tried RHEL in my environment. Should I?
As an IBMer I'm supposed to be neutral about distributions. This is easy
because I feel that both SLES and RHEL are excellent distributions (as are
Debian and Slack390 I would imagine).
Often, an enterprise will make a strategic decision to
I thought all computer geeks played DD :-)
Certainly all the schizophrenic ones :))
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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Can some give me the directions on the proper steps to change the system
name and the IP address of my test Linux system
Here is the guts of changes made by the clone.sh script from The
Virtualization Cookbook. The variable names should be self-explanatory:
cat $master_mnt_pt/etc/HOSTNAME |
Hello list,
Has anyone used heartbeat across LPARs to set up an HA solution? We are
close but it's not quite working.
We set up two ITDS6 LDAPs that are peer to peer master servers so their
databases stay in sync. We set up heartbeat to give the two servers a
single Virtual IP Address (VIPA).
As promised some time ago, I have updated the presentations page on
linuxvm.org ...
Very cool. Thanks Mark!
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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Hello list,
I'm trying to mount an ext3 file system as ext2, I thought this could
*always* be done, but I'm finding otherwise.
I write to a disk on a master Linux and then want to link it read-only
on clones. I use a LINK statement in the USER DIRECTory, use (ro) in
zipl.conf and ro in fstab.
Leland,
You could try mounting it with the noload option.
Thanks, but no cigar - same error:
# mount -o noload /dev/dasdd1 /mnt
mount: wrong fs type, bad option, bad superblock on /dev/dasdd1,
or too many mounted file systems
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
James,
Did you try the -t flag? -t ext2 specifically?
Yes, many times:
# mount -t ext2 -o ro /dev/dasdd1 /mnt
mount: wrong fs type, bad option, bad superblock on /dev/dasdd1,
or too many mounted file systems
# mount -t ext2 -o noload /dev/dasdd1 /mnt
mount: wrong fs type, bad
Ronald,
Thanks for the append.
Please check how the dasd driver sees the dasdd disk
It sees it as ro:
# cat /proc/dasd/devices
0.0.0100(ECKD) at ( 94: 0) is dasda : active at blocksize: 4096,
546840 blocks, 2136 MB
0.0.0101(FBA ) at ( 94: 4) is dasdb : active at blocksize:
James,
How do you tell Linux what VM already knows (The disk is RO) during
startup
so you camt mount the VM specified RO mini-disk as RW to linux?
Good question. But it goes back to the basic premise that Mark pointed
out. I'll try to summarize
1) when you need to write to a disk that others
In case any one here hadn't heard, Novell is offering Release
Candidate versions of SLES10
Thanks Mark.
Within IBM, we have the luxury of an internal download server. I got
SLES10 RC3 (4 CD isos) but have not been able to get it to install.
As a head's up, there are new parmfile parameters
Hello list,
I finally got SLES10 RC 3 installed. Thanks to William Scully for
recommending to take out the InstNetDev, OsaInterface and OsaMedium
parameters. That was the only way I was able to get out of the starting
gate. Hopefully SuSE will fix that before GA.
It did install with the iso
Tom,
Apparently, you're not paying your bills.
Exactly. It was a fun little experiment and $10/mo didn't sound like
much, but I gave up on it (scratched that itch).
looking for the current mksles9root script.
It's on http://linuxvm.org/patches/S390/mksles9root.sh
Thanks to Mark Post and
Also, what might be the complications for mksles9root when dealing with
a DVD Image?
No complications, no script needed!
It was good news to hear that SuSE has a DVD ISO image for SLES10. Having
one should allow you to mount the ISO image loopback, point to it and
install. There should not be
Hello list,
FYI - the subject draft redbook is on the Web at
http://www.redbooks.ibm.com/redpieces/abstracts/sg247272.html?Open
This book started as a copy of the book z/VM and Linux on IBM System z:
The Virtualization Cookbook for SLES9 and converted SLES stuff to RHEL
stuff. I worked a bit
Inho,
The service pack is an additional installation source. So it is
a different path with CD1 to CDx.
OK, so I assume there will be a need for a similar tree structure as with
SLES9. Could SuSE supply a script to build the tree and the yast/order
and yast/instorder files? That would be very
Mike,
Can someone direct me on what needs to be done
or where I can go to get the information?
See linuxvm.org/present.
I wrote a paper and did a presentation on SHARE. Both are getting a bit
old, but should still be close to correct:
http://linuxvm.org/present/misc/SambaMig.pdf
Marcy,
Seems to work for me. I'll ask a Dumb Question: you did put a message in
the file, correct? Mine was empty
login as: root
Password:
Last login: Fri Jul 21 08:56:51 2006
this is /etc/motd
# history | tail -3
901 echo this is /etc/motd /etc/motd
902 exit
903 history | tail -3
Is there a way to restart the loader?
#cp ipl 00c
Assuming the three punch files are still in your reader, that will just
start the install process again.
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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Unless I am terribly misinformed, it *is* an atomic operation for the
operating system. Even though from a storage management point of view
it may take some time.
The z/VM FLASHCOPY command can give a return code of 0 and then *fail*
later asynchronously. It is difficult to trap in REXX (for a
Dominic,
Does it makes sense ?
Have you heard/read Gordon Wolfe's Managing a Penguin Farm on the VM
Prairie? See http://linuxvm.org/present/ and it looks like there are 4
copies of it from various SHARE conferences. You might want to read
through the oldest and the newest. Gordon maintainted
You may not give IBM software to anyone else.
depending on the license: the IBM Public License allows it.
http://www.opensource.org/licenses/ibmpl.php
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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Hello list!
I am pleased to announce there is an updated version of z/VM and Linux on
IBM System z: The Virtualization Cookbook on http://linuxvm.org/present/.
It includes a new chapter, 11, Cloning IBM middleware virtual servers
that describes installing and cloning WebSphere Application Server
Dave,
Are you going to have it available on the IBM red books site as well?
No, there are no plans to do so at this time.
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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Any plans for a SLES10 version of the cookbook?
Not at this time. We still need to work on chapter 11. But perhaps down
the road ... perhaps in a different media.
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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Hi List,
You might find the article: Buy a Mainframe, Save Energy? pertinent. See
http://www.internetnews.com/ent-news/print.php/3628646
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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You might try over on the ibmvm list server ([EMAIL PROTECTED])
I found this hit on the Web:
http://listserv.uark.edu/scripts/wa.exe?A2=ind0603L=ibmvmT=0P=57590
Where Jim Vincent said:
We have z/VM 5.2 on 12 systems here - all but 1 are production systems.
Generally they have been
Sure, it wastes a little, but ...
When writing The Virtualization Cookbook,
http://linuxvm.org/present/misc/virt-cookbook-2.pdf, we took Rob's
suggestion to save a few cycles by doing the following:
1) Have one zLinux server run the NTP server, xntpd, syncing to servers on
the Internet becoming
So what do you suggest?
Can this be taken offline? It is clearly off topic. What is the local
linux discussion group cited in the subject line? Thanks.
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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For LINUX-390
Is there a way to run vmcp as non-root? Or, is there a way to run a
cgi-bin script as root (probably not the better security choice). I want
to execute CP commands from a cgi-bin script. Has anyone done this?
Thanks.
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
John,
Why not set up sudo for that?
Yes, of course. Thanks. I added the following line to /etc/sudoers and
that did it:
%wwwALL=NOPASSWD:/usr/bin/vmcp
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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For LINUX-390
And, I agree with your warnings about giving access to CP commands.
If you give sudo vmcp access to only users the www group, which has one
user, wwwrun (that apache runs under) by default, then no holes there. If
the cgi-bin scripts only do specific queries of z/VM then no holes there.
And for
That lets all the world to do whatever.
From a browser, or from a non-root ssh session? Can you give me an
example?
Mike MacIsaac [EMAIL PROTECTED] (845) 433-7061
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