gmane.os.solaris.opensolaris.sysadmin

Re: Swap device priorities in Solaris?

Mike Gerdts — 2011-05-30T13:59:18

While this type of administration is sometimes necessary, generally I
see this as an indication of a bad application that needs babysitting.
 I prefer to train Solaris to do that babysitting than performing fire
drills every time an application misbehaves.

You may want to look at using ulimit -d (or maybe ulimit -v) to keep
individual processes from doing bad things.  ulimit values are
inherited by from parent to child (setting ulimit in a shell gets
inherited by a process created by that shell).  You can use plimit to
change an existing process' ulimits or view the ulimits for running
processes.  If a process tries to use too much memory, it will be
killed - the same thing you would do if you were to log in to take
care of the bad process.

If you use SMF to manage the starting and stopping, it will be
automatically restarted after it is killed for consuming too much
memory.  In this case, you probably want to use ulimit in the start
script before starting the actual process.

If you have a collection of

Re: Swap device priorities in Solaris?

Jim Klimov — 2011-05-29T10:52:13

Thanks, I've got a number of replies regarding, overall, the possible fault in the basis of my question - that is, that letting a system get into swapping is bad, so if that happens - the tasks or hardware should be reevaluated. And also that SSDs wear out fast so using them for swap is a bad idea in general.

While I agree with the validity of these points, they do not quite reply to the original question.

So let me generalize it a bit:
* There are some cases where swap/paging is needed and changing the hardware (RAM) or the tasks is not viable for whatever reason the system's architect or user may think up. Anyway - open OSes are about providing a way to make choices and tradeoffs, no?
* Some devices are better suited for use as swap areas, and being better in IOPS - they are also usually more expensive per GB and may be prohibitively small for a given swap requirement. If SSDs are a bad example, think 15kRPM disks vs. 5400RPM :) Or a dedicated small disk for swap vs. larger disk shared with other data-st

Re: Swap device priorities in Solaris?

Mike Gerdts — 2011-05-29T03:11:50

If swap is on a ZFS volume (zvol, e.g, /dev/zvol/dsk/rpool/swap) it
will take advantage of the native ability of ZFS to intelligently use
SSD as a layer of caching, including for swap.  That being said, if
you are doing a lot of paging to swap, your in for a world of hurt no
matter whether you are using SSD or traditional hard drives.  See, for
example,

http://serverfault.com/questions/272426/how-does-putting-swap-space-on-an-ssd-affect-performance
http://blogs.oracle.com/partnertech/entry/swap_space_on_ssd
http://serverfault.com/questions/239808/ssd-for-swap-on-ubuntu-server

Re: Swap device priorities in Solaris?

Jim Klimov — 2011-05-28T14:53:41

Also, is it possible to tell apart the actual swapping from "overcomitted VM" (I think that's what it is called - i.e. when VirtualBox reserves swap pages to be able to swap out if needed, but often these pages are never written to disk) - it would be nifty to use the higher-priority swap devices for pages actually swapped from RAM to disk, and not as a reserve for greedy software...
//Jim

Swap device priorities in Solaris?

Jim Klimov — 2011-05-28T14:50:10

Hello all,

I was recently asked if it is possible to specify different priorities to swap devices in Solaris, like it is possible on Linux, and found that "I don't know but probably not" :\

One use-case might be a system running with the rpool in a fast SSD with limited space, and the owner wants the system to swap into the SSD swap partition (or rpool volume) until that space runs out, and only then swap into slower additional HDD swap spaces - and not round-robin all available swap spaces all the time.

So - is that currently possible in any recent version of Solaris or OpenSolaris?
If not, how difficult would it be to code such behaviour as an RFE?

Thanks,
//Jim Klimov

Re: Sun Storage 7320 system

Hung-Sheng Tsao (Lao Tsao 老曹) Ph.D. — 2011-05-27T13:59:16

please also see these paper


  MySQL Guide for Sun Storage 7000 Unified Storage System
  <http://wikis.sun.com/display/BluePrints/MySQL+Guide+for+Sun+Storage+7000+Unified+Storage+System>



http://blogs.oracle.com/dlutz/entry/mysql_on_sun_storage_7000

for mysql and 7000 storage, could also give you some hits


postgreSQL and 7000


http://www.oracle.com/technetwork/systems/articles/adempiere-7000-jsp-139750.html
http://blogs.oracle.com/jkshah/entry/postgresql_and_project_amberroad_sun


On 5/26/2011 9:09 AM, Gustav Potgieter wrote:
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Re: How to install new service in open solaris

Sanu P Soman — 2011-05-26T15:52:22

Thanks a lot :) :)

Re: Sun Storage 7320 system

Hung-Sheng Tsao (Lao Tsao 老曹) Ph.D. — 2011-05-26T15:19:44

http://blogs.oracle.com/jkshah/entry/how_about_a_postgres_extension
http://www.solarisinternals.com/wiki/index.php/ZFS_for_Databases#PostgreSQL_Considerations

On 5/26/2011 10:30 AM, LaoTsao wrote:
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Re: How to install new service in open solaris

Hung-Sheng Tsao (Lao Tsao 老曹) Ph.D. — 2011-05-26T15:18:28

some example

http://www.wiik.de/blog/2005/10/23/smf-manifest-solaris-jes-tomcat-jboss/
http://www.oracle.com/technetwork/articles/systems-hardware-architecture/deploying-oracle-database-solaris-168405.pdf


On 5/26/2011 10:34 AM, LaoTsao wrote:
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Re: How to install new service in open solaris

LaoTsao — 2011-05-26T14:34:44

Please google solaris SMF
There  are many old talk and there. Exist  site that provide SMF for solaris 
http://en.wikipedia.org/wiki/Service_Management_Facility

Sent from my iPad
Hung-Sheng Tsao ( LaoTsao) Ph.D

On May 26, 2011, at 9:47 AM, Sanu P Soman <sanusoman321-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

Re: Sun Storage 7320 system

LaoTsao — 2011-05-26T14:30:19

What I say may not be upto date

If you want performance, mirror and ssd  for zil, there exist white paper  for zfs and oracle db
You may be able to used for postgres

If you want sPace raidz give you the most space it use raid5 like protection raidz2 and raidz3 
Like double and triple parity to protect more hdd. Failure

One more things you need to consider is
How are serve the db: nfs, iscsi, fc etc
IMHO, nfs is the simplest
Iscsi and fc you will need another FS on server for DB

Zfs provide analytics(dtrace based) will have you do some realtime data to help you about performance

Of course you will need good backup

You did not mention you have single head or dual head for 7320
It provide and plus and minus

Sent from my iPad
Hung-Sheng Tsao ( LaoTsao) Ph.D

On May 26, 2011, at 9:09 AM, Gustav Potgieter <gp-jqj1eM7VVrDYkQIYctQFYw< at >public.gmane.org> wrote:

Re: How to install new service in open solaris

Sanu P Soman — 2011-05-26T13:47:58

Thanks for the comment Lao :) 

Could you please share me how can I create SMF of my application ?

Re: Sun Storage 7320 system

LaoTsao — 2011-05-26T12:57:10

May be you should ask in zfs-discuss list
Zfs appliance has simulator that should be able to g.I've you some idea about the tread off for space for various raid/mirror
As for performance, google it and read various zfs links , best practice tunning  guide
Zfs < at >lisa09 is good start
You should get support contract to cover your self


Sent from my iPad
Hung-Sheng Tsao ( LaoTsao) Ph.D

On May 26, 2011, at 7:13 AM, Gustav <gus-jqj1eM7VVrDYkQIYctQFYw< at >public.gmane.org> wrote:

Re: How to install new service in open solaris

LaoTsao — 2011-05-26T12:47:56

In line

Sent from my iPad
Hung-Sheng Tsao ( LaoTsao) Ph.D

On May 26, 2011, at 8:06 AM, Sanu P Soman <sanusoman321-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

You can do the same or
Create SMF for your apps

How to install new service in open solaris

Sanu P Soman — 2011-05-26T12:06:54

Hello,

I want to install a new service for my application (Atlassian JIRA) in open Solaris. Now I'm starting the jira service by starting the "startup" script in tomcat's bin folder.

In RHEL, I've installed the jira service by using "chkconfig" command and a custom script, like 
chkconfig --add <script name>, the custom script is placed in /etc/rc.d/init.d

I'm new to Solaris, Please advice me on this ..

Thanks,
Sanu P Soman

Sun Storage 7320 system

Gustav — 2011-05-26T11:13:59

Hi All,

Can someone please give some advise on the following?

We are installing a 7320 with 2 18 GB Write Accelerators, 20 x 1 TB disks and 96 GB of ram.

Postgres will be running on a Oracle x6270 device with 96GB of ram installed and two quad core cpus, with a local WALL on 4 hard drives, and 7320 LUN via 8GB FC.

I am going configure the 7320 as Mirrored with the following options available to me (read and write cache enabled):
Double parity RAID
Mirrored
Single partiy RAID, narrow stripes
Striped
Triple mirrored
 
Was does the above mean in real terms officially, 
and what is optimum for a (Postgresql 9, or any performance tips for Postgres on a 7320) database high writes,
and are there any comments that can help us improve performance?

Thanks, all feedback will be appreciated!

Re: zfs flar restore

Naveen kumar — 2011-05-26T05:35:17

Thanks

The procedure is working fine. 

I have created flash archive, able to restore from network (NFS). 

I am trying for a non interactive restore method, i.e without providing any install details. I want to build restore DVD. with flash archive inbuilt in DVD. restoration should be non interactive.

If any hint please let me know. currently i am trying with 
http://www.phoronix.com/scan.php?page=article&item=867&num=1

Thanks
Naveen

Enforcing security using DNSSEC

russell — 2011-05-23T19:17:09

Hi,

With the introduction of DNSSEC, it should be possible to publish a security policy via a DNS record which is encrypted and signed to verify its authenticity which could be read by every computer within a domain.

This record could be used to set the security policy on every computer, by setting nis, ldap, smtp, nfs servers and locking down the networks by setting global firewall parameters.
As DNS is a hierarchical model, child domains could inherit settings from the parent or be allowed to override them. This would also apply to individual DNS records to allow permissions on a per machine basis.

Using this approach, settings could be enforced via DHCP internally and if an organisation published a security policy publicly on the internet it could be used to ensure that all computers would follow a corporate standard.

Unfortunately this technology would require an acceptable platform independant framework to allow it to be used by an internet connected device, laptop, server or mobile phone.

Re: zfs flar restore

Naveen kumar — 2011-05-23T09:34:38

Hi,

Thanks for the update.  I will try. 

Naveen

Re: zfs flar restore

LaoTsao — 2011-05-21T14:25:10

http://hub.opensolaris.org/bin/view/Community+Group+zfs/flash

Sent from my iPad
Hung-Sheng Tsao ( LaoTsao) Ph.D

On May 21, 2011, at 7:17 AM, Naveen kumar <navin_shad-QOiod4cnrWAN+BqQ9rBEUg< at >public.gmane.org> wrote:

zfs flar restore

Naveen kumar — 2011-05-21T11:17:49

Hi, 

I wanted to create non interactive zfs flar restore DVD. I followed below procedure.
This experiment on soalris10, apologize me i know this forum is for opensolaris.  

1) flarcreate -n patched /export/home/flar/patched.flar
2) I followed "http://www.phoronix.com/scan.php?page=article&item=867&um=1" 
    to create NON interactive restore iso image.

As soon i machine boots with the iso. i got error runcmd error in /usr/sbin/sysidput 

the details log  message 

sip_have_min_net_info: returning FLASE
sip_have_all_info:returning FLASE
sip_configurable_network:FAILED to configure primary interface
cleanup_if:checking booted off net image
system is not booted off net image
get_net_ipaddr:iprb0 
get_net_ipaddr returned FASE iprb0 is probably 0.0.0.0
unable to remove /tmp/root/etc/hostname.iprb0

----------------------------------

in sysidcfg file i replaced with network_interface=primary to 
network_interface=bnx0 

still system is looking for iprb0 interface. 

what went wrong?...  Is there any other solu