"Local" failover for NTP Server on Solaris 10

I have four Solaris 10 Servers, all syncing their time from an external NTP server ntp.example.com.
Is it possible to configure one of the four servers as a local "pseudo" Failover NTP, i.e. acting as a client to ntp.example.com, as long as it is available, and acting as a NTP server to the remaining three servers in case ntp.example.com is not available, so that at least the four local servers remain synced among themselves?

Shouldn't be any problem. For one thing you can always specify multiple servers in the /etc/inet/ntp.conf file and use one of them as 'prefer', i.e.:
server ntp.example.com prefer
server local.mydomain.com
Then again, perhaps it would just be easier if one of your servers syncs against 'ntp.example.com' and the rest of your servers always synchronizes against that one server?
.7/M.

Similar Messages

7.4.1 fails "No Address for NTP server"

Did all the upgrades to Airport utility and firmware but couldn't get the AEBS to recognise a valid IP address even though it has leased one. In addition, I looked at the logs and saw the error message 'No Address for NTP server'. The issue was solved by reverting, but 7.4.1 has made my AEBS inoperable.

Thanks for your replies, much appreciated.

Set up Failover for Mac server hosting OD, FileSharing, and DNS

I have a 2008 Mac Pro server running Mavericks. On this server, we are hosting Open Directory with about 250 users, DNS, and File Sharing. All of the users have home directories on the server. 25 of them are using Home Sync. All of the home directories and file sharing are stored on an external RAID device connected by eSATA. The boot drive is an internal 250GB SSD.
If the server should suffer some catastrophic hardware failure, I would like to be able to restore a clone of the boot drive to another server (Mac-mini) and just move the external RAID device to the new hardware. This would give me a failover plan that could be implemented in less than an hour. So far this procedure mostly works. The Mini boots up and assumes the identity of the Pro and serves up DNS and File Sharing. The clients all find the Mini at the proper IP address by the FQDN of the original (Pro) server. However, network users are unable to authenticate with Open Directory on the new server..
Surely I'm not the first to encounter this situation. Any help would be appreciated.
Also, if there is a better scheme for having this kind of failover, I'd be glad to consider it. Virtualization might be the key to getting the kind of failover I'm looking for.
Thanks for your help.

You must have working forward and reverse name resolution.

Setting DISPLAY for Reports60 server on Solaris

Hello,
Where can I find instructions on how to set the DISPLAY variable for my starting script of the reports60 server?
Everything works fine when I set DISPLAY to a workstation running an XWindows client session, but I don't want to rely on that solution. I want to point to a server.
Thanks in advance...
Paul.

Paul,
You should be able to use either xvfb or vnc as headless servers. I think that the instructions for this are included in the iAS release notes. If you can't find anything there or in Metalink then let me know and I'll see what I can dig up.
Thanks
Danny

NTP server setup in DMZ

Hi Team,
We have Windows 2008 AD infrastructure with Single domain Single Forest & 30 remote AD sites with RODC in it.
We are planning for NTP server setup on Windows 2008 server in DMZ......can someone help me with steps for setup.
What is best practice for NTP architecture so that all DC will sync time from NTP & NTP sync time from external source.
Please suggest.

Hi,
Would you please tell us that has the plan of your security team worked out?
Because based on what I understand, domain members will synchronize time from Domain Controllers while DCs will synchronize time from PDC.
Here is a thread below about the best practices of time synchronization in a domain:
Time Sync best practices
http://social.technet.microsoft.com/Forums/windowsserver/en-US/043b1ebe-e7bc-40ca-91e0-174a6854808e/time-sync-best-practices?forum=winserverDS
Best Regards,
Amy

NTP Server IP Address ?

Hi,
I have configured a Cisco 6509 core switch as a NTP master and allowed all my access switches to get their time synchronised with the core switch. Now, I want to configure the core switch to get itself synchronised with other public NTP server which would be reliable and genuine as our organisation is serving for healthcare. One of my friend has told me to use these IPs 128.249.1.1 or 128.2.136.71 as a NTP Server in the core switch. Should I use them?
Is Cisco recommends any Public IP for NTP Server synchronisation? Please suggest.
Thanks & Regards,
Anil K.

Disclaimer: I have no affiliation with Cisco in any way except where I work, we use some Cisco products (sw/hw). So take it however you will.
Personally, I would rather adopt the following approach suggested at http://www.pool.ntp.org/en/use.html, than hardcoding a couple of public NTP servers in a remote region:
"As pool.ntp.org will assign you timeservers from all over the world, time quality will not be ideal. You get a bit better result if you use the continental zones (For example europe, north-america, oceania or asia.pool.ntp.org), and even better time if you use the country zone (like ch.pool.ntp.org in Switzerland) - for all these zones, you can again use the 0, 1 or 2 prefixes, like 0.ch.pool.ntp.org. Note, however, that the country zone might not exist for your country, or might contain only one or two timeservers. If you know timeservers that are really close to you (measured by network distance, with traceroute or ping), time probably will be even better. "
Of course, if time sync is REALLY that important, one might consider buying/installing commercial GPS-based NTP appliances. That's not what you're looking for, obviously.

Which Cisco router for NTP service

Hello,
I'm looking for deploying NTP service for multi-customer (in Datacenter).
So, I take a look at Cisco routers list and I saw that some router doesn't have hardware-clock / internal-clock ; for example 2600 series.
I'm looking for a "cheap" but good solution to provide NTP :
- "Cheap" : that's why I take a look at routers, and not directly NTP appliance.
- "Good" : something that can provide time to 300+ end-devices.
Cisco 800 series got hardware-clock, if I read good. But this is the cheapest router, so I don't feel confident.
> What's the "best" router for NTP server ?
> Please, could you share your experiences, opinions ?
Thanks,
Have a nice day.

Cisco 800 series apparently got internal clock, could it do the job correctly?
Rick and I have answered this question already.
Depends on the router, you can instruct the router to regularly update the hardware clock using the command "ntp update-calendar".
If you really insist on a router, an 800 router, then you can get all your device to sync to your router and your router gets sync somewhere in the internet.
Make sure you have the following commands:
ntp server <NTP server>
ntp update-calendar
Note: You can have multiple NTP server IP addresses. And the command above are hyperlinks.
Warning: DO NOT be tempted to use the command "ntp master".

Xntpd on Solaris 10 gets synchronised with a higher stratum NTP server

The Solaris 10 machine has the following configuration in etc/inet/ntp.conf
server 10.24.179.33 prefer
server 127.127.1.0
fudge 127.127.1.0 stratum 8
The Linux Fedora Core 4 test machine(10.24.179.33 ) configured as NTP server running ntpd V4 has the following configuration
server 127.127.1.0
fudge 127.127.1.0 stratum 10
The solaris 10 xntpd get synchronised to Linux NTP server even though it is at a higher stratum level.
# ntpq -p
remote refid st t when poll reach delay offset disp
==============================================================================
*10.24.179.33 LOCAL(0) 11 u 18 64 77 2.04 0.084 376.68
LOCAL(0) LOCAL(0) 8 l 17 64 77 0.00 0.000 385.01
The expectation was the solaris machine should not consider the server at a higher stratum level(11) for synchronistation. It should have got synchronised to the Local clock which is at stratum level 8.

I now tried waiting for an hour, but the xntpd id still synchronised to the higher stratum clock from the NTP server 10.24.179.33. Please verify the logs below.
Does the prefer keyword in line "server 10.24.179.33 prefer" has anything to do with this behaviour ?
What does the RFC1305 say on process of selecting a synchronisation source ?
My understanding was that xntpd should not be synchornising with a higher stratum clock from the NTP server (which is at stratum 11) when it already has as another server(here the local clock) which is at a lower stratum (we have simulated this by fudging the local clock to stratum 8).
Please correct me on this.
You have mentioned that "Stratum number is not absolute for choosing a clock. A higher stratum may be preferred in some situations."
Could you explain me more on these situations and I also want to know the rules used by xntpd to choose a clock?
Or you could provide any links where I can read more on this aspect.
# ntpq -p
remote refid st t when poll reach delay offset disp
==============================================================================
10.24.179.33 LOCAL(0) 11 u 13 64 1 0.52 -0.001 15875.0
LOCAL(0) LOCAL(0) 8 l 12 64 1 0.00 0.000 15885.0
(WCCONGO02):(root) UTC 1:21:37 VER R-02.01.16.03
# ntpq -p
remote refid st t when poll reach delay offset disp
==============================================================================
*10.24.179.33 LOCAL(0) 11 u 1 64 77 0.52 -0.244 376.77
LOCAL(0) LOCAL(0) 8 l 64 64 37 0.00 0.000 885.01
(WCCONGO02):(root) UTC 1:26:45 VER R-02.01.16.03
# uname -a
SunOS WCCONGO02 5.10 Generic_127127-11 sun4v sparc SUNW,Netra-T5440
(WCCONGO02):(root) UTC 1:29:44 VER R-02.01.16.03
# ntpq -p
remote refid st t when poll reach delay offset disp
==============================================================================
*10.24.179.33 LOCAL(0) 11 u 40 64 377 0.61 0.415 0.56
LOCAL(0) LOCAL(0) 8 l 39 64 377 0.00 0.000 10.01
(WCCONGO02):(root) UTC 2:7:56 VER R-02.01.16.03
# ntpq -p
remote refid st t when poll reach delay offset disp
==============================================================================
*10.24.179.33 LOCAL(0) 11 u 13 64 377 2.26 1.289 0.66
LOCAL(0) LOCAL(0) 8 l 12 64 377 0.00 0.000 10.01
(WCCONGO02):(root) UTC 2:22:25 VER R-02.01.16.03
Edited by: SujithKS on May 27, 2009 10:34 AM
Edited by: SujithKS on May 27, 2009 11:26 AM

Problem synchronizing windows clients with solaris 10 NTP server

Hello everyone,
I realyy need help on the following:
I tried to synchronize windows 2003 as client with NTP server running in Solaris 10
My Time Zone in the NTP server is GMT+3, and in my windows is also set to GMT+3
When I start NTP server and clients , I got 6 hours delay between the clients and the server
I tried to synchronize the Solaris server with another solaris system, the synchronization is working fine
Your help
Regards
Hakim Fourar

True (but only for later releases). But since he mentioned getting a 6 hour offset after starting them, that makes me think that the systems are communicating, and that the time zones are incorrect.
This is easily verified by using 'ntpq -p' and 'date ; date -u'. The first will show if the client thinks it is synchronized to a server (and what the UTC offset is in miliseconds). The second will show the date in the default timezone and in UTC.
If you're not using POSIX, you'd think that GMT+XX meant east of UTC, but for POSIX, it means west of UTC.
Darren

W32tm always on "Local CMOS clock" on virtual domain controller - cannot change to NTP server

The domain controller (Server 2012R2) is hosted on Hyper-V (Server 2012R2). It is a PDC.
- firewall disabled
- cleaned up w32tm:
net stop w32time
w32tm /unregister
w32tm /register
net start w32time
- applied ifixit from http://support.microsoft.com/kb/816042 to enable external ntp server de.pool.ntp.org
- disabled
VMICTimeProvider in registry
(HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\VMICTimeProvider\Enabled = 0)
I can manually query the ntp server de.pool.ntp.org:
w32tm /stripchart /computer:de.pool.ntp.org /samples:5 /dataonly
de.pool.ntp.org wird verfolgt [131.188.3.221:123].
5 Proben werden gesammelt.
Es ist 24.04.2014 10:07:36.
10:07:36, +00.0115379s
10:07:38, -00.0025048s
10:07:40, -00.0008595s
10:07:42, -00.0010477s
10:07:44, -00.0014516s
But still, w32tm does NOT query the ntp server:
PS C:\Windows\system32> w32tm /query /source
Local CMOS clock
rosch

Hi rosch,
Based on your description, please check if disable the "Time synchronization" Integration service. Please refer
to the following operation.
In Hyper-V Manager, right click the DC and select “Settings…”.
In the left panel of Settings, navigate to Integration Services and click it.
Then in the right panel, please uncheck Time synchronization.
By the way, please check if can connect to the time server and UDP port was opened for NTP.
If any update, please feel free to let me know.
Hope this helps.
Best regards,
Justin Gu

Configure directiry server failover for delegated admin schema 2

Hello,
I am using Delegated Admin for Schema 2 on solaris 9 sparc platform.
I want to configure directory servers failover for delegated admin.
Unfortunately I havent found any clue for the same.
Can anyone help me?
Regards,
Shujaat Nazir
Senior System Engineer
Cyber Internet Services, Pakistan
http://www.cyber.net.pk

Different product.
Schema 1 used the old iPlanet Delegated Admin.
Schema 2 uses Delegated Admin, based on Identity Server.
As far as I know, failover is not in this product.

1) How to Boot from SAN for T4-1 Server with Solaris 11.1 OS on the disk? 2) How to SMI Label/Format a disk while OS Installation in Solaris 11.1?

FYI....boot from SAN is required for physical server (T4-1) (not OVM).
1) How to Boot from SAN for T4-1 Server with Solaris 11.1 OS on the disk?
The SAN disks allocated are visible in ok prompt. below is the output.
(0) ok show—disks
a) /pci@400/pci@2/pci@0/pci@f/pci@0/usb@0, 2/hub@2/hub@3/storage@2/disk
b) /pci@400/pci@2/pci@0/pci€a/SUNW, ezalxs@0, l/fp@0, 0/disk
e) /pci@400/pci@2/pci@0/pci@a/SUNW, ealxs@0/fp@0, 0/disk
d) /pci@400/pci@2/pci@0/pci@8/SUNW, emlxs@0, l/fp@0, 0/disk
e) /pci@400/pci@2/pci@0/pci@8/SUNW,enlxs@0/fp@0,0/disk
f) /pci@400/pci@2/pci@0/pci@4/scsi@0/disk
g) /pci@400/pci@1/pci@0/pci@4/scsi@0/disk
h) /iscsi—hba/disk
q) NO SELECTION
valid choice: a. . .h, q to quit c
/pci@400/pci@2/pci@0/pci@a/SUNW, ealxs@0/fp@0, 0/disk has been selected.
Type “Y ( Control—Y ) to insert it in the command line.
e.g. ok nvalias mydev “Y
for creating devalias mydev for /pci@400/pci@2/pci@0/pci@a/SUNW,emlxs@0/fp@0,0/disk
(0) ok set—sfs—boot
set—sfs—boot ?
We tried selecting a disk and applying sfs-boot at ok prompt.
Can you please help me providing detailed pre-requesites/steps/procedure to implement this and to start boot from SAN.
2) How to SMI Label/Format a disk while OS Installation in Solaris 11.1?
As we know that ZFS is the default filesystem in Solaris 11.
We have seen in the Oracle documentation that for rpool below are recommended:
- A disk that is intended for a ZFS root pool must be created with an SMI label, not an EFI label.
- Create root pools with slices by using the s* identifier.
- ZFS applies an EFI label when you create a storage pool with whole disks.
- In general, you should create a disk slice with the bulk of disk space in slice 0.
I have seen the solution that using format -e, we change the labelling but all the data will be lost, whats the way to apply a SMI Label/Format on a rpool disks while OS Installation itself.
Please provide me the steps to SMI Label a disk while installaing Solaris 11.1 OS.

Oracle recommends below things on rpool: (thats reason wanted to apply SMI Label)
I have seen in the Oracle documentation that for rpool below are recommended:
- A disk that is intended for a ZFS root pool must be created with an SMI label, not an EFI label.
- Create root pools with slices by using the s* identifier.
- ZFS applies an EFI label when you create a storage pool with whole disks.
- In general, you should create a disk slice with the bulk of disk space in slice 0.

Yosemite 10.10.2 server app. FTP help. I have a program running in my local server enviroment that wants to FTP to my mac folder. It asks for the server , name, password, port and path. what are they?

So I have set up a localhost area in my Mac. I have the new server.app and I am running yosemite 10.10.2 .
I have a program running in my local server enviroment that wants to FTP to my mac .
It asks for the server , name, password, port and path. what are they?
I am pretty certain that the Serveris "localhost",
Name is my macs name (like my-mac-min)
password is "my login password"
and they suggest port 21.
But what is the file path, lets just say my site is set up http://localhost/siteftp and is actually at my Users/Sites/siteftp folder.
Why cant this program connect to the mac.
Is it because they are both operating in the same localhost enviroment,
could it be my folder permissions are not correct on siteftp folder?
Help please !

I tried turning the computer off and then back on. The alerts don't show the notice to update as resolved. Hopefully this is not a problem or an indicator or another problem. Should I ignore or reload 10.10.1 from the app store to trigger a resolved check in a green circle?
Interesting that I had to buy server software after my free Yosemite download. I would have hoped that the two pieces of software would have gone together without any complication. It is not positive to end up buying a problem. Ah well, time to move on.

Can I use Microsoft SQL Server Management Studio version 11.0 to write SQL queries for "SQL Server Compact 4.0 Local Database"

Hi, Can I use Microsoft SQL Server Management Studio version 11.0 to write SQL queries for "SQL Server Compact 4.0 Local Database" ?
When I use Connect Object Explorer, the "Connect to Server" dialog box which pops up has only 4 selections in the Server Type Drop Down List. They are Database Engine, Analysis Services, Reporting Services & Integration Services. I have read
somewhere that there should be a compact database option. but I do not see it.
What I would like to do is use free form SQL Queries against the tables in "SQL Server Compact 4.0 Local Database" .
Once I have validated these queries, then I will use them in my Visual Studio 2012 C#, ASP.NET application. I created the Local Database using Visual Studio 2012 for use by my application.
Thank you for your help..
diana4

Hello,
With SSMS 2005 we have had the Option to work with SQL CE database files, but not with higher Version of SSMS.
You can use the free SQL CE Toolbax instead; see
http://sqlcetoolbox.codeplex.com/
Olaf Helper
[ Blog] [ Xing] [ MVP]

While trying to access my local network I get the message..."The page could not be opened because server cannot be found." This, after updating to Yosemite and paying (again) for the server app.

while trying to access my local network I get the message..."The page could not be opened because server cannot be found." This, after updating to Yosemite and paying (again) for the server app.

It's absolutley scandalous that a company with Apple's resources can let this happen. They should have staggered the release by region rather than opening the flood gates. The upgrade itself took me about 10 attempts to download it, and then I thought I was home free. That was until it rebooted and won't activate. It's over 2 hours now.
Scandalous!

"Local" failover for NTP Server on Solaris 10

Similar Messages

Maybe you are looking for