Archive for the ‘OpenSolaris’ Category

Oracle Solaris 11 Networking — Where do I start?

Tuesday, December 27th, 2011

If you’re confused by the changes to network configuration in Solaris 11 (and who isn’t?) then this is a good place to start.

http://docs.oracle.com/cd/E23824_01/html/E24456/network-1.html

The online reading interface seems to be responsive and well formatted, so I read the first few pages in my browser.  It does a good job of giving you an overview at the start so you can understand the way the new commands and modes fit together.

OpenSolaris Solaris 11 : NWAM messed up my network, how do I fix it?

Sunday, November 21st, 2010

This post is intended as a “google aid”.  Hopefully by giving this blog post a provocative title, I’ll get the right kind of people reading it.  Specifically, people who are frustrated with NWAM.  NWAM is a Solaris 11 feature, and it stands for “Network Auto-Magic.” I’ve had several run-ins with NWAM over the last year or two, and I finally got pointed at some documentation. I want to pass on the documentation, and I want to help to get this documentation higher in the google rankings when people search for NWAM.

The manual you want to look is has the name: System Administration Guide: Network Interfaces and Network Virtualization.  You can find it here (link).  You can download it in PDF form if you want to, and go straight to the chapter on Network Auto-Magic.  That should help you come up to speed on what it is.

Hopefully I’ll have a chance to post more about my specific problems and solutions, I’m currently trying to get NIS set up to work correctly in client mode.

Virtualization terms

Wednesday, June 16th, 2010

Update: A newer version of this post (find it here) was recently created. 2

Okay, before I forget, I’m writing it all down.

We have to test against all this stuff, and it’s becoming more and more convenient to use virtualization as a way to share lab resources, so I figured I’d go make sense of all the terminology that’s flying around.  I understood 80% of it, but I could never understand all of it at once.  A lot of this was extracted from Wikipedia.

Here are the things that affect my life: Xen, VirtualBox, VMWare, LDOMs, Zones, Containers.

Hypervisor : Software that emulates a hardware platform, so that Operating Systems can run on top of it, as if they had hardware to run on.

OS Virtualization: When you have one OS (one kernel) running multiple user-spaces. Applications think they are on separate machines.

There are two kinds of Hypervisors, some run directly on hardware (Type 1), and some run as applications (Type 2).

With those terms defined, here is a description of the technologies, features, products that I listed at the top:

  • Hypervisors:
    • Running on hardware – Type 1 Hypervisor
      • Xen: Hypervisor that runs on hardware, supports x86 (aka Sun xVM)
      • LDOMs: Hypervisor that runs on hardware, supports SPARC
    • Running as an application – Type 2 Hypervisor
      • VirtualBox: Hypervisor that runs as an application, supports x86
      • VMWare: Hypervisor that runs as an application, supports x86
  • OS Virtualization
    • Solaris Containers/Zones

The terms “zone” and “container” seem to interchangeable. I have not found a source that is both clear and authoritative that can tell me the difference.

Zones are capable of running different versions of Solaris inside one Global OS instance.

There are lots of things I glossed over here, but my goal was keep it short and sweet.

Trivia:

  • You can run a specific old version of Linux inside a Solaris zone.
  • The VMWare company probably supports products on other chips than x86
  • There are lots of differences between the features of Xen and LDOMs that I didn’t discuss

Which version of Sun Studio do I have installed?

Friday, May 14th, 2010

Recipes for supported packaging formats

Sun Studio is available on three different packaging systems. Here are some examples that show you how to get information about the Sun Studio packages on each kind of system.

  • IPS packaging system – on OpenSolaris
  • SYSV packages – on Solaris 10
  • RPMs – on SuSE and RedHat Linux

If you want to know what version of a Studio component you’re using, the steps are shown below.  The compiler or tool you’re interested in might be on your search path (you can find the location with “which cc”) or you might already know the full path.  Once you have the full path, here are the things you might want to find out:

  1. Find out the name of the package containing that binary.
  2. Dump out information about that package.
  3. Optionally look for other packages from the same Studio release, to see what else is installed.

Generally the multiple packages that make up Sun Studio will use a similar naming convention.  In the currently available releases, these package names are cryptic.

Sun Studio 12 update 1 installed on Solaris 10

What version is built into the binary?

% /opt/sunstudio12.1/bin/cc -V
cc: Sun C 5.10 SunOS_sparc 2009/06/03
usage: cc [ options] files.  Use 'cc -flags' for details

Which package is that binary in?

% pkgchk -l -p '/opt/sunstudio12.1/bin/cc'
NOTE: Couldn't lock the package database.
Pathname: /opt/sunstudio12.1/bin/cc
Type: symbolic link
Source of link: ../prod/bin/cc
Referenced by the following packages:
SPROcc
Current status: installed

What other packages are installed?

% pkginfo | grep SPRO
application SPROatd                          Sun Studio 12 update 1 Advanced Tools Development Module
application SPROcc                           Sun Studio 12 update 1 C Compiler
application SPROcmpl                         Sun Studio 12 update 1 C++ Complex Library
application SPROcpl                          Sun Studio 12 update 1 C++ Compiler
application SPROcplx                         Sun Studio 12 update 1 C++ 64-bit Libraries
...

Sun Studio 12 update 1 installed on OpenSolaris

What version is built into the binary?

% /opt/sunstudio12.1/bin/cc -V
cc: Sun C 5.10 SunOS_i386 2009/06/03
usage: cc [ options] files.  Use 'cc -flags' for details% /opt/sunstudio12.1/bin/cc -V

Which package is that binary in?

% pkg search -lp /opt/sunstudio12.1/bin/cc
PACKAGE                                   PUBLISHER
pkg:/developer/sunstudio12u1@12.1.1-0.111

What other packages are installed?

% pkg list | grep -i studio
developer/sunstudio12u1                       12.1.1-0.111    installed  -----

Sun Studio 12 update 1 installed on SuSE 11 Linux

What version is built into the binary?

% /opt/sun/sunstudio12.1/bin/cc -V
cc: Sun C 5.10 Linux_i386 2009/06/03
usage: cc [ options] files.  Use 'cc -flags' for details

Which package is that binary in?

% rpm -qf /opt/sun/sunstudio12.1/bin/cc
sun-cc-12.1-1

What other packages are installed?

% rpm -qa | grep sun- | head
sun-lang-12.1-1
sun-idext-12.1-1
sun-mr3m-12.1-1
sun-prfan-12.1-1
sun-stl4h-12.1-1
sun-cplx-12.1-1
sun-dbxx-12.1-1
sun-pls-12.1-1
sun-dwrfs-12.1-1
sun-rtmx-12.1-1
...

Notes

The excessively terse naming convention is because of the ancient restrictions in AT&T System V UNIX that limited package names to 9 characters.   Sun also made an early decision to prefix packages names with 4 letters to mark the part of the company that was releasing the packages.  In all fairness, Sun was trying to invent a scheme where outside software vendors could reasonably choose package names without accidentally conflicting with any of the Sun packages.  That’s difficult to do in only 9 characters.  On OpenSolaris, you can see that we merged everything into one package.  Because the friendly new packaging system is one of the highlights of OpenSolaris, we didn’t want to confuse new users with the multitude of small packages we have for Sun Studio.

Hopefully, this information will be useful in a variety of circumstances. Inside the Studio team, we need to go back and forth between all three packaging systems, and it’s not easy to remember the right system commands to work with the packages on a given system. In the support team, one of the first things they ask a customer is which version of the Sun Studio software they are running. It’s also possible to install subsets of Sun Studio, so you may want to know which tools are currently installed.

Note: Studio will actually run fine on lots of different versions of Linux, including distributions that don’t use RPM as their native package format (like Ubuntu).  The tarball downloads are useful for those Linux distributions.

OpenSolaris VNC update

Thursday, April 22nd, 2010

I use VNC connections as part of my regular daily routine, and I ran into another bug a few days ago, so I figured I’d post a summary of the current bugs that are currently afflicting me, and the workarounds for them.

First is a really interesting bug where the less-than-sign turns into a greater-than-sign.  Really.  I’m not joking. The comma and period work fine, it’s just the less-than-sign.  The public bugid for this is 14729. The workaround is to run xmodmap when you start your VNC session (I put it in ~/.vnc/xstartup).

xmodmap -e 'keycode 94 = comma less'

The second bug is that the server crashes whenever you turn OFF the capslock key.  The public bug for this one is 14397. The workaround I found for that is the following:

vncserver ... -RemapKeys 0xffe5->0x00

In other words, you try to disable the capslock key, and the result is a capslock key that works correctly.  I have no idea what the implementation is doing.

I’m using a Mac client these days as a desktop, so I’d be interested in hearing from anyone using windows VNC clients to see if they’ve hit these same bugs or not.  Of course, I do live on the bleeding edge of OpenSolaris.  The last few biweekly dev releases have been internal-only, but I think both of these bugs are in public OpenSolaris releases.

OpenSolaris build 129 has problems with filemerge fonts

Wednesday, December 16th, 2009

I’ve been staying more up-to-date with Solaris dev builds since they started publishing builds nigh-biweekly. That means I get to experience all the joyful brokenness of a system in development.  Build 128 introduced a problem with VNC which can be worked around by disabling the “tight” encoding (bugid 6906660). And Build 129 introduced a problem with filemerge fonts (bugid 6909040).  Both have pretty easy workarounds described in the bug descriptions.  The release notes for opensolaris are not widely redistributed, so if you’re using the dev repository from outside Sun, make sure you’re on the osol-announce@opensolaris.org mail alias.

Downgrade OpenSolaris

Friday, November 13th, 2009

This is a fairly frequently asked question inside Sun, and now that the biweekly builds are available outside Sun, there are probably more people who are interested.  If you want to create a Boot Environment with a specific build (not the latest one) in OpenSolaris, here are the steps to use:

beadm create snv122
beadm mount snv122 /mnt
pkg -R /mnt install pkg:/entire@0.5.11-0.122
bootadm update-archive -R /mnt
beadm umount snv122
beadm activate snv122

Caveat Emptor and all that stuff.  This recipe comes with no warranty, but I’d be glad to make it more accurate or up-to-date if you let me know of improvements.

Installing Solaris patches on top of a tarball.

Wednesday, June 3rd, 2009

There are times when you have a copy of some Solaris packages installed, but the pkg database is not available.  This can happen when you relocate the installation directory manually, or if you’ve placed the files on a non-Solaris NFS server, or if you backed up your /opt directory, and restored it aftera complete OS reinstall.  So what happens if you want to update your software with the latest Solaris patches?  It’s actually not too hard to tear apart a Solaris patch and get at the files, so I wrote a script to help out in these situations.

The script can compare your install directory with a patch to see if the files in the patch match the versions in your install directory.  It can also install the files from the patch into your install directory. The patch arguments can be either zip files or unzipped patch directories.

This checks if any patches look like they’re not applied.

% patchraw -n DIR PATCH PATCH ....

This installs all files in all patches

% patchraw DIR PATCH PATCH ...

I developed the script using the sparc version of Sun Studio 12 as an example, and did no other testing.  So caveat emptor.  If you want to use the script, make a backup copy of the install tree.  There are some comments in the source, and some commented out print statements that might be useful.

In order to get the latest patches for Sun Studio, I recommend using the Patch Check Advanced script by Martin Paul.  You can get it here: http://www.par.univie.ac.at/solaris/pca/

The pca script is a swiss army knife for Solaris patches.  In our case we only need to make limited use of it download a set of patches. It wants to use ‘showrev’ to check your system, so you can’t run it on OpenSolaris for now.  To get the list of the latest patches available for Sun Studio, there are two ways.  There is a page listing Sun Studio 12 patches., but it can be out of date. At the time of this writing, it’s missing a locale related patch.

You can also use the pca script to download the latest index of patches and search through it.  Sun’s patch index doesn’t split out platforms very clearly, so I had to tack on some greps.  Here is the command that worked for me to find sparc patches.  This process only works if the patch synopsis follows some sort of mostly sensible convention.

% pca -l -p 'Sun Studio 12: ' total | grep -v Linux | grep -v RHEL

Put that output into a file like “patchlist”, then use pca to download the patches.  You’ll need a free login/password for the sunsolve site.

% pca -a -d patchlist
Please enter Sun Online Account User:  (your sunsolve/SDN login)
Please enter Sun Online Account Password:  (your password)

If you find this useful please drop me a line…

The script is here:  SCRIPT.

Extra Caveat: The Sun Studio 12 tarball that’s available from sun.com leaves out the performance libraries.  So installing all the patches carries the risk of installing part of the performance libraries, but not all the files.  This may cause incorrect linking of programs that try to use the performance libraries.

Visualizing dynamic library dependencies

Friday, May 22nd, 2009

Darryl Gove has been working on graphical display of shared library dependencies. It seems useful for performance analysis and debugging of dynamically linked applications.

He did one for StarOffice and for Firfox and Thunderbird.

Finding the right package in OpenSolaris?

Thursday, January 8th, 2009

Ubuntu has a cool feature called command-not-found where they publish an index of all the binaries on the system, and the package that each one belongs to.  When you combine this with the bash command-not-found hook, you get a default environment that responds to a missing command by telling you what package to download.  (Sorry, too lazy for screenshots…)

Anyway, this feature would be a good use for the new pkg command.  You could write a script that creates an index of all binaries, and then store that index in the user’s home directory.  Another script could react to the command-not-found hook in bash and tell the user something useful.

In fact, you could almost do this interactively by querying the pkg database, except that when I query ‘dbx’ (for example), I get 37 hits.  Most are for the different versions of the right package, and a few are for a package-alias of some kind.  A script that got that answer would need to apply some clever heuristics to do the right thing.

It seems like a good afternoon project, but I haven’t had a spare afternoon in quite a while. The pkg-discuss@opensolaris.org alias can offer help with pkg issues.

Any takers?