Quorum Server Question

Hi All,
If using two or more clusters, can cluster nodes be quorum servers for
for other clusters?
/Regards
Ulf

Yes, if is feasible. There have been discussions internally about the possibility of making an HA quorum server. Personally, I'm not sure of the value of doing this as you need to guard against the possibility of correlated failured that cause everything to fail in a cascading manner.
Tim
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Similar Messages

Quorum Server Redundancy Question

Hi All,
I'm just investigating my options for a new cluster configuration and was trying to find out about multiple quorum servers hosts. All the examples I have come across in the documentation have 1 physical host acting as a quorum server for an n+1 node cluster. I'm ssuming that there will be quorum issues in the event the physical host, hosting the quorum server, is down and the cluster nodes performed a reconfiguration/switch when the quorum server was unavailable.
Is it possible to have 2 physical hosts, with quorum servers defined on each, that can then be confidured in to the cluster. Effectivly pointing at two different quorum servers for votes?

Correct, the QS is only used if the cluster changes state, i.e. nodes leave or join. However, having more than 1 QS for a single cluster does not help. You simply lower your overall availability because there are more failure scenarios where one of these is down, leading to insufficient votes for the remaining cluster node to obtain.
Active monitoring and prompt repair of the QS (or QD) is the right approach.
Tim
---

Lync 2013 FE quorum server

Hi,
1. how i can check which is the perimary quorum server in the FE pool lync 2013 ?
2. how i can change the quorum server before restart the FE server ?
Thanks,

1. Get-CsPoolFabricState will get you the node order. 2. You can't. Well not that I've been able to work out. The only option is to reset the fabric, which you can do of you run into issues with services not starting as a result of fabric issues.
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Lost quorum using quorum server

I have a two node cluster with a third node being used as a quorum server. The quorum server is on a different VLAN than the cluster nodes.
If I shut down or reboot node 1, node 2 dies. I can reboot node 2 without any impact on node 1, it works as it's supposed to. In this scenario the nodes seem to be unable to talk to the quorum server so the cluster thinks its lost quorum and it dies. After it is back up the quorum server is corrupt and shown as offline so the only way to restore it is to remove it from the cluster and readd it.
Node 2 never seems to be able to see the quorum server, it always shows it as offline, even when I add it from node 2. Node 3 is not a cluster configured server, it only has the quorum server installed on it to support the cluster of node 1 & 2. Node 3 is on another vlan, therefore there is a router in the path.
Does the quorum server have to be on the same VLAN so that there's no router in the loop?
Does anybody have any ideas on what could be wrong here? Does the quorum server really work or do I have to add a third server to the cluster just to have a stable cluster?
--- Further info, the clqs show command on node 3 shows disabled false, and keys for node 1, but nothing for node 2 and node 2 can't open the qs.
Thanks,
Terry
Edited by: taccooper on Jan 21, 2010 4:00 AM
Edited by: taccooper on Jan 26, 2010 3:58 AM
Edited by: taccooper on Jan 26, 2010 6:19 AM

I may have answered my own question by applying patch 127406-04. With this patch applied both cluster nodes are now seeing the quorum server. The patch among other things solves an issue with simultaneous opens failing. I will have to do some failure testing to confirm this.
Update: failure testing complete, this patch solved the issue.
Terry
Edited by: taccooper on Jan 27, 2010 5:20 AM

SC3.2 Quorum Server in S10 container?

Hi,
Is it possible to have a single server act as a quorum device for several (test / development) clusters? If it's not supported by the software, perhaps by installing multiple copies of the software within S10 zones?
TIA. Tom

Hi Tom,
It is supported and documented in http://docs.sun.com/app/docs/doc/819-5360
you just have to add separate lines in /etc/scqsd/scqsd.conf and differentiate by instance name and port.
You only have to be aware that a single quorum server is s single point of failure and thatt's it.
Cheers
Detlef

Clq status shows quorum server offline even though the clq service is runni

Hi,
In a 2 Node + 1 QS sun cluster 3.2 cluster, clq status is showing quorum sever offline even though the clq process is running on the quorum server. to make the quorum server online, i have to either remove and add the quorum server from cluster, or incase if there is a failure on any one of the node's both th nodes will reboot and once both joined to the cluster, I can see clq status showing quorum server online!!!
Why is the quorum server going offline automatically?
Any help would be highly appreciated
Many thanks in advance
Ushas Symon

Hi,
I asssume you mean the scqsd process is running on the QS, right?
A QS is shown as offline, it the monitor could not reach it when it last tried. This is usually due to a networking problem.
If you issue a clq status, the monitor checks again and if it can reach the QS will change its status back to online.
If this does not happen, check your logs, what kind of error message showed up.
Does clqs show on the QS show the correct information?
It is obvious, that if a node dies and the QS has been offline prior to the node death, that the other node will die as well due to lack of quorum, i.e. it has less votes than needed. You seem to have a basic networking problem or something is really wrong with your QS.
Regards
Hartmut

Quorum Server Bug?

I have a 2 node cluster using a quorum server running on a third server. I turned off one node this morning, and then used svcadm to disable the quorum server on the third server. THis was in an attempt to panic the remaining node for testing purposes.
It's been about 20 minutes now, and the remaining node has not panicked from losing quorum. clq status and scstat -q show essentially the same things, though in diffent formats. There are 2 votes needed, 2 present, and 3 possible. Under the details, the first node has 0 votes present, the up node has 1, and the disabled quorum server has 0.
cletus# clq status
Cluster Quorum ===
--- Quorum Votes Summary ---
            Needed   Present   Possible
            2        2         3
--- Quorum Votes by Node ---
Node Name       Present       Possible       Status
brandine        0             1              Offline
cletus          1             1              Online
--- Quorum Votes by Device ---
Device Name       Present      Possible      Status
hwi_san_qs        0            1             Offline
cletus# scstat -q
-- Quorum Summary --
Quorum votes possible:      3
Quorum votes needed:        2
Quorum votes present:       2
-- Quorum Votes by Node --
                    Node Name           Present Possible Status
Node votes:       brandine            0        1       Offline
Node votes:       cletus              1        1       Online
-- Quorum Votes by Device --
                    Device Name         Present Possible Status
Device votes:     hwi_san_qs          0        1       Offline
cletus# cletus# clq status
    1             1              Online
--- Quorum Votes by Device ---
Device Name       Present      Possible      Status
hwi_san_qs        0            1             OfflineCould this be a bug with quorum math when used with quorum server? Is it related to me using svcadm to shut down the quorum server gracefully?

To add what Tim has described. The improved quorum monitoring feature will detect that you shut down the quorum server, but will not panic the remaining node. Why should it? It knows it is the only node left and can safely continue to run. When the second node failed it had enough votes to reconfigure!
Regards
hartmut

Clq status shows quorum server offline eventhough it is online

Hi,
I am facing a problem in my cluster that when I bring all the three nodes in a cluster (2 app-nodes and one quorum server) at almost the same time, the clq status on any of the cluster nodes is showing quorum server as offline. when I do the clqs show on the quorum server, i ge the below output.
clqs show
=== Quorum Server on port 9000 ===
--- Cluster beacluster (id 0x4916625B) Reservation ---
Node ID: 1
Reservation key: 0x4916625b00000001
--- Cluster beacluster (id 0x4916625B) Registrations ---
Node ID: 1
Registration key: 0x4916625b00000001
Node ID: 2
Registration key: 0x4916625b00000002
this is cluster 3.2
any inputs will be appreciated
Thaks in advance
Ushas Symon

Hi, this is solaris cluster 3.2u1..
I got the quorum server online by
# clq status
--- Quorum Votes by Device ---
Device Name Present Possible Status
rac1 1 1 Offline
# clq add -t quorum_server -p qshost=xxxxxxxxxx -p port 9001 rac2
# clq status
--- Quorum Votes by Device ---
Device Name Present Possible Status
rac1 1 1 Online
rac2 1 1 Online
By just adding one another QS both the QS status came online !!!!!!!!!!!!
no IDEA, what is happening...
anyways I have deleted the second QS by #clq remove rac2 and #clq reset
now it is fine..
Thanking you all
Ushas Symon

A Few Newbie 10.8 Server Questions...

Hi All,
A few quick newbie 10.8 Server questions:
1) Airport Extreme - I currently have an Airport Extreme attached to one of my workstations which is serving as my main router with a dedicated IP. I'm just in testing mode with my new server and wondering if I need to do anything to the Airport's configuration to make it work with the Server? Does the Server need to administer the functions of the AirportExtreme? Or is it ok to leave it attached to the workstation? Or does it not make any difference?
2) Automount Shared Folder/Drive - I would like my users (who are mostly using MacBookPros with they take home and bring back to work) to be able to Automount our shared data drive when they come in to work. I read the help section regarding AutoMount, but it a) referred to using ServerAdmin, which I understand has been eliminated from 10.8 (dont know why they are still referring to it in the help!) and b) it talks about AutoMounting Home Folders, but not shared Drives/Folders.
3) Firewall - I have a static IP and want my users to be able to connect using VPN. I am buying a SSL for the domain. Wondering if the combination of the built in firewall, plus the SSL, plus the built in VPN is secure enough, or should I be investing in a solution such as the SonicWall TZ100.
Thank you !!!!!

1) Airport Extreme - I currently have an Airport Extreme attached to one of my workstations which is serving as my main router with a dedicated IP. I'm just in testing mode with my new server and wondering if I need to do anything to the Airport's configuration to make it work with the Server? Does the Server need to administer the functions of theAirportExtreme? Or is it ok to leave it attached to the workstation? Or does it not make any difference?
The Server app is not required to manage your airport.
The server app can automatically open ports for you, so it makes life easier for a home-server-administrator.
Continue managing your Airport or whatever NAT router you prefer any way you choose.
2) Automount Shared Folder/Drive - I would like my users (who are mostly using MacBookPros with they take home and bring back to work) to be able to Automount our shared data drive when they come in to work. I read the help section regarding AutoMount, but it a) referred to using ServerAdmin, which I understand has been eliminated from 10.8 (dont know why they are still referring to it in the help!) and b) it talks about AutoMounting Home Folders, but not shared Drives/Folders.
You can drag a mounted sharepoint to the right-side of a user's dock.
It will then remember the sharepoint, and its 1-click to open it when needed,
This is my preference with laptops.
You can also add the sharepoint to your user's login items (on their workstations, System Prefs, UsersGroups/, User, Login Items - I don't like to do this with laptops because it causes a login delay when they aren't in the locaiton of the sharepoint.
Either method is simple.
I even use Safari bookmarks to get people to a server. Go to the addressbar and type: afp://[email protected] (with your real IP) then bookmark it. You can also drag that that URL to the desktop to have a location file which will ALSO take you to the server.
So Lots of ways... Depends on users/environment.
3) Firewall - I have a static IP and want my users to be able to connect using VPN. I am buying a SSL for the domain. Wondering if the combination of the built in firewall, plus the SSL, plus the built in VPN is secure enough, or should I be investing in a solution such as the SonicWall TZ100.
If you aren't going to have anything except for VPN open to the public, then you won't need SSL.
VPN, but nature, is already encrypted and does not use SSL.
If you will run Mail, Web, Calendar, Contacts, etc and don't want to requires users to VPN, then you should use SSL.
TIP: Fromt the start, use a fqdn for your server. Don't use a .private or something fictitious.
If you own mydomain.com, then setup myserver.mydomain.com and make it your server's hostoname from the get-go.
Later, you'll be glad you used a proper FQDN
Jeff

QT Broadcasting through media server question

Hey all,
My question is this: does anyone know how (if its even possible) to use QT Broadcaster on MANUAL UNICAST to webcast to users connecting to a media server?
for instance: G5 ---> media server <----user
<----user
<----user etc.
I have been trying to set up the webcast as such: creating a manual unicast .sdp with the IP address of the media server contained within. upload the .sdp to the media server where the users will find it and connect to the stream.
So far, all I get on the client side is a QT window that says, "Live Broadcast" and "ready".
If the clients connect to the stream through the media server (which has its own static IP that matches the one in the .sdp) shouldn't they be able to view the webcast?
Any and all thoughts are most appreciated.
-=adam=-
[email protected]

Using Manual Unicast:
Manual unicast is a method of broadcasting that requires you to export an SDP file from QuickTime Broadcaster to one receiving computer identified by its IP address. The receiving application can be a single QuickTime Player or QuickTime Streaming Server or Darwin Streaming Server. If the receiving application is QTSS or DSS, the broadcast is reflected and no longer limited to a single IP address.
To broadcast via Manual Unicast:
If necessary, click Show Details in the QuickTime Broadcaster window, and in the Network pane choose a preset.
Choose Manual Unicast from the Transmission pop-up menu, and enter the IP address of the receiving computer (or accept the default IP address of your own computer if broadcasting to yourself as a test), the audio port and video port numbers (or accept the defaults if broadcasting one-to-one), and the buffer delay (or accept the default).
If desired, also enter information in the Annotation section.
Click Broadcast, and then choose Export from the File menu and SDP or Movie from the Export submenu.
Specify a name for the SDP or movie file and click Export.
If the file is exported directly to a QuickTime Player, the viewer opens the file using "Open Movie in New Player" to view the broadcast. If the file is exported to QTSS or DSS, the viewer instead uses "Open URL in New Player." Talk to your QTSS or DSS administrator to determine the correct URL.
Viewing a QT broadcast:
Your audience can view your live broadcast using either QuickTime Player or a web browser with the QuickTime Plugin. You determine how users will see the broadcast by distributing an announcement movie file, which is needed by QuickTime Player to "tune in" to your broadcast, or by creating a Web page that refers to the movie file.
For best results, your viewers should use QuickTime 6. QuickTime Broadcaster streams can be viewed using versions as early as QuickTime 4, but some viewers may not be able to watch your broadcast if you choose compression methods that are not available in the older software.
When viewers connect to your stream, progress messages appear about connecting, negotiating, and buffering, then the stream begins playing. Viewers can pause or stop the broadcast, but when they resume they'll jump to the current moment if they're watching a live broadcast.
If viewers are watching an archived (or prerecorded) broadcast, they will be able to pause, rewind, or skip ahead using the QuickTime controls.
Annotating your broadcast:
You can add a title, copyright, and other annotations to your broadcast.
If necessary, click the Show Details button in the QuickTime Broadcaster window. Then click the Network tab and fill in the desired fields under Annotations.
Your audience can view this information by choosing Show Movie Info from the File menu in the QuickTime Player application.
About Instant-On streaming:
Viewers watching a streaming video with QuickTime 6 will benefit from Instant-On, an advance in Apple's patent-pending Skip Protection technology that dramatically reduces buffer, or wait, time for an instantaneous viewing experience. Viewers can click around or scrub video as if it was on their hard disk.
Users must have a broadband connection to experience Instant-On. The responsiveness of Instant-On is affected by available bandwidth and size, or data rate, of the content. It can also be affected by the codec used. Hinted movies made using the QDesign Audio codec, for example, may not be Instant-On capable.
Choosing a broadcast method:
The size of your expected audience determines how you deliver the broadcast.
For example, when broadcasting a live event to only one QuickTime Player, QuickTime Broadcaster can send a single stream using Mac OS X without server software.

Mini Web Server Question

I'm guessing there might be a person or two who can help me with a solution for a new mini that I'm using as a web server. Everything is set up and working perfectly. Apache is running well, and I've established my Virtual Hosts and enabled PHP and MySQL. What I haven't been able to figure out, however, is how to go about limiting access to particular directories on my server.
Here is what I would like to accomplish.
I've got a couple of sights that have the root directory of /www/sitename/publichtml/.
In those public_html directories are resource directories with names like "images" "downloads" etc.
From my websites, I pull resources from those directories in order to serve images, resources, etc.
What I would LIKE to do is still allow those directories to serve the resources to the sites, but prohibit direct access to those directories from direct web access. In other words, I want my images to pull from those directories, but I don't want someone to be able to directly navigate to the directory www.sitename/images/imagename.jpg.
I would like some message to show up along the lines of "You do not have permission to access this directory".
I attempted to do this with file permissions, but it either allows total access to the directory or won't allow the web pages to pull the resources.
Does anyone know of any other solution that will help me accomplish my goal?
Thanks!
Chris

You are going to be more likely to get a good answer to this question in the Mac OS X Server forums. If you are using Leopard Server, go [here|http://discussions.apple.com/forum.jspa?forumID=1237].
If you are using Mac OS X Web Sharing you should post [here|http://discussions.apple.com/forum.jspa?forumID=1225].
Best of luck.

JSP Weblogic server question.

          Hi,
          I'm new with Weblogic, and I have running the server already. I'm able to run servlets
          through the browser, however I want to start working with JSP. I created a sample
          jsp file and when trying to launch it through the browser I get a 404 message error.
          So my question is how can I make weblogic to act as a jsp server as well?
          Thank you for any help.
          A.R.


Copy your JSP file into the
          config/mydomain/applications/
          DefaultWebApp directory
          In a web browser, request the JSP file using the following URL:
          http://localhost:7001/sampleJsp.jsp
          "A.R." wrote:
          > Hi,
          > I'm new with Weblogic, and I have running the server already. I'm able to run servlets
          > through the browser, however I want to start working with JSP. I created a sample
          > jsp file and when trying to launch it through the browser I get a 404 message error.
          > So my question is how can I make weblogic to act as a jsp server as well?
          >
          > Thank you for any help.
          > A.R.

Xserve as Web server Question

Hi.
I'm wondering in buying the new Xserve, but I'm not sure which model, that is, how much RAM etc.
This machine will have around 30.000 concurrent users.
What should I be looking at? What I'm more looking at is do you think that any web application can be run on one Xserve?
The app will be written in RoR (Ruby on Rails). And will be hosting video files.
I know this is quite open question, but what do you recommend?
Do you think that starting with the basic model with 4GB of ram could handle these users, but maybe not on full speed?

>many users should the Apache on Xserve be able to handle, how many requests do you think?
If only it were that simple. It isn't.
There are many factors you need to take into consideration.
Are the web pages static pages (e.g. plain HTML?) or dynamic (e.g. PHP, JSP, CGI, etc.)? That will make a big difference right there. You can sustain way more static page hits than you can dynamic ones that are built on the fly.
You might find that a single server can sustain 100 megabits per second of bandwidth for large, static files, but drops to one or two megabits per second for small, dynamically-created PHP files.
Then you have to take into account media content. Are your pages simple 10K HTML, or are they 100K of HTML, plus 50K of CSS and 200K of images?
If you're hosting videos you need to determine the size of the videos (both in terms of duration and file size). This will dictate how much bandwidth you need to serve that content to the end user.
In most cases bandwidth is going to be your bottleneck, not CPU or RAM, so you need to be able to answer those questions before you can really work out how much traffic a single server can handle.
Bear in mind that growing your site from a single server to multiple servers isn't trivial - you'll need some kind of load balancing device to spread the connections across multiple servers and they can run into a lot of $$$s (or whatever the Icelandic unit of currency is ).

Client-server question

hi there..
I'm writing a java client that connects to a server to recieve some messages and classify them to different kinds, and then append these msgs to a database application. I have 2 questions:
1. After connection is established to the server, how can my client program know that the server has been down for whatever reason? Note: im not the one who writes the server application, and that the server does not notify my client of its departure.
2. Im thinking of creating a number of connections to the DB application thats equal to the no. of msg types i have( i have 4 msg typs, so i create 4 DB connections), will this improve the program performance more than having one DB onnection that carries all msg types?
Thanks.. Mourad

1. In your client if a connection is lost you will get an excepntion and you can deal with that...
2. its a good idea to use a connection pool package to manage your connections. it will know when and how many open connections you will need. There are may packages out there. use an open source one

Using Smbup and Mavericks Server Questions

Hello everyone and Happy New Year!
My company has been using Mavericks Server for about three months now and we've had some major hiccups along the way, most of them relating to using Apple's iteration of SMB in a mixed environment. After weeks of research, it appears that it all stems from Apple ditching the official Samba systems after the release of Lion Server; I'm having read-only files after doing all of the possible tweaks with .TemporaryItems permissions, etc. During that research I have numerous threads and suggestions regarding SMBup as an easy method to introduce proper SMB into the Mac Mini Server, however I have a few questions about the software before I employ it on a server that powers a multi-billion dollar business.
Will SMBup interact with all the users I have already created within the Server app or do I have to recreate everyone in SMBup? If I do have to recreate users in smbup, will I have to do something different to bind the users to groups I've already created as well?
Will SMBup interfere with any of the permissions I've set with ACLs through the server app or will they be unchanged? I would assume that if the groups exist as normal (previous question) that permissions would be unchanged, but as I said I'd rather not just point and shoot.
Finally, will anything need to be done for the Mac clients in the office (as in, would I need to install SMBup on client machines as well)?
I greatly appreciate any and all the assistance you all can provide, unfortunately I never heard back from the developer after several emails over a span of a couple weeks. I figured because of the holidays and a normal developer's working life, that I probably fell through the cracks. Again, thank you and I look forward to any of the answers I can get.
Daniel

I normally wouldn't do this but I'm sure someone has experience with this and given the board's limited searching capabilities, I haven't been able to find an answer. So, again anyone familiar with the program?

Quorum Server Question

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