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• hadoop install cluster

  - by chnet

  Is it possible to run hadoop on multi-node and these nodes install hadoop on different paths? I noticed the tutorial, such as Michael Noll's, http://www.michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-multi-node-cluster/, asks hadoop to be installed on different nodes with the same installation path. I tried to run hadoop on multi-node. Each node installed hadoop on different path. But not success. I noticed that the hadoop assume installation paths are the same in default. The problem is when I execute start-dfs.sh it tries to start hadoop deamons on the salve nodes from the same path as on master. "Whereas the installation path is different. Were the relevant files modified to reflect the installed locations on each node"? Which file I should modify to reflect the installed locations on each node?

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• Access Java based keystore directly on Sun ONE Webserver 6.1

  - by George Bailey

  The keystore seems to reside in one of /opt/SUNWwbsvr/alias/https-sub.domain.ext-hostname-cert8.db /opt/SUNWwbsvr/alias/https-sub.domain.ext-hostname-key3.db What tool would I use to access this file? I have tried these commands which did not work. /opt/SUNWwbsvr/bin/https/jdk/bin/keytool -certreq -keyalg RSA -file /tmp/test.csr -keystore /opt/SUNWwbsvr/alias/https-sub.domain.ext-hostname-cert8.db /opt/SUNWwbsvr/bin/https/jdk/bin/keytool -certreq -keyalg RSA -file /tmp/test.csr -keystore /opt/SUNWwbsvr/alias/https-sub.domain.ext-hostname-key3.db /opt/SUNWwbsvr/bin/https/jdk/bin/keytool -list -storepass password -keystore /opt/SUNWwbsvr/alias/https-sub.domain.ext-hostname-cert8.db /opt/SUNWwbsvr/bin/https/jdk/bin/keytool -list -storepass password -keystore /opt/SUNWwbsvr/alias/https-sub.domain.ext-hostname-key3.db They all gave me the error message keytool error: java.io.IOException: Invalid keystore format

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• WEB based HPC cluster node management

  - by Skuja

  Hello, i am working on my school diploma thesis. The main goal is to create web based application where logged users could see free and busy nodes, turn them on and off, see what process they are running etc. Figured out that i could do something like this - write some cron daemon that would run every 30seconds or so, and it could run ping utility for each node to find out if it is on or off, then write results to some file. Then from my web app (i will write in PHP) i could read the info. Will it be a good solution? How would you suggest me to do it? And finally, is there any existing solutions (it may not be a definetly ewb based) for managment of cluster nodes?

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• Sun Java keytool importing EV certificates into a single keystore

  - by ss0

  At my current job we are using tomcat, customers have custom web portals setup on their own local machines. EV certs are new to me, they have 2 part intermediary and a primary certificate. For our product to work it appears I need to get all three parts installed under a single keystore entry. How can I roll all three parts into a single x.509 compliant file for import? They syntax I am using is as follows: /blah/system/j2sdk/bin/keytool -import -alias foo -keystore /zix/system/jdk1.5.0_06/jre/lib/security/cacerts -file certname.pem -trustcacerts where foo = the keystore name and certname.pem is the main cert. I have tried importing the intermediate certs under their own names into the keystore and I don't know if it's just the product I have to work with (not vanilla tomcat) or what but it doesn't see those. I have seen a working system and all three certs were under the single keystore alias. Anyone have any ideas?

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• low performance on HPC cluster (sge) when running multiple jobs

  - by Yotam

  O know this is a long-shot but I'm clueless here. I'm running several computer simulations on High Performance Computation cluster (HPC) of oracale grid engine (sge). A single job runs at a certain speed (roughly 80 steps per second) when I add jobs to the machine, at a certain treshhold, the speed is recuded by two. On one machine (I don't know the cpu kind) the treshold is 11 jobs for 16 cpu's. On another one with the same number and kind of cpu's , the treshold is 8. I thought at first that this is a memory issue but each job takes about 60MB - 100MB and I have 16GB of ram on each of those machine. Did any of you encountered such a problem? is there any way to analyz this? Thanks.

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• Shared block device file system (cluster file system without networking)

  - by fungs

  Is there any file system that can be mounted multiple times and supports concurrent file access for Linux? Basically I want something like a cluster file system but without the need to have a running network for a distributed lock manager. That can be very handy in connection with virtual machines that can share data with the host or another VM without the need to create a network link. This I want to avoid to keep the network architecture secure (virtual machine in DMZ) but share large files. No need to scale it up, just two machines that mount the same block device. Shouldn't it be possible to have file locking information right on the disk?

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• How to present shared storage for MS Cluster Services running on vSphere 5

  - by MDMarra

  I've seen two approaches to handling the presentation of shared storage to Windows Server 2008 R2 cluster VMs on VMWare vSphere. One is the traditional method of carving out a LUN on your SAN and presenting it to both hosts through the Microsoft ISCSI software initiator. The other method is to make a vmdk on an existing LUN and attach it to both hosts and made it an independent disk so that it isn't affected by snapshots. Is one way the "correct" way, or are both viable? Is there any advantage or disadvantage to doing either?

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• Sun Power Button Won't Shut Down System

  - by user36680

  Background: We are running NIS and have NFS mounts from a Solaris 10 workstation to a Solaris 8 server. If the workstation loses its network connection for some reason, when I look at the workstation's console I see repeated messages of the form: <date> <time> <hostname> ypbind[<pid>]: NIS server not responding for domain "<domain>"; still trying. If I try to login at the console as a user, it won't work because it can't authenticate my account through NIS. Also, it won't return to a login prompt again, so I can't log in as root. If I press the power button (don't hold it in) on the workstation, I see: <date> <time> <hostname> power: WARNING: Power off requested from power button or SC, powering down the system! Shutdown started. <date> <time> Changing to init state 5 - please wait. <date> <time+2 minutes> <hostname> power: WARNING: Failed to shut down the system! And continue to see messages of the form: <date> <time> <hostname> ypbind[<pid>]: NIS server not responding for domain "<domain>"; still trying. So, the questions are How do I make NIS stop trying (because I know it will fail)? Why won't it shut down?

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• iLOM Boot device SUN X4170

  - by bernie

  I have configured the boot device to cdrom but whenever I reboot the server, it defaults to boot_device=default. Pressing F2/F8 during POST does not activate the BIOS setup. set boot_device=cdrom Set 'boot_device' to 'cdrom' -> show /HOST Targets: diag Properties: boot_device = cdrom generate_host_nmi = (Cannot show property) Commands: cd set show

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• Windows 2012 Cluster on P6300 SCSI-3 Persistent Reservation issues

  - by Bruno J. Melo

  Scenario: 1 HP 6300 with latest XCS version 1 Command View 10.1 + with hosts defined as Windows 2008 2 BL460c Gen8 Servers with SPP 2012.10 and Windows Server 2012 Datacenter Edition with all the updates + MPIO feature enabled DSM v4.03.00 Cluster Analyser Tool triggers this error: Test Disk 0 does not support SCSI-3 Persistent Reservations commands needed to support clustered Storage Pools. Some storage devices require specific firmware versions or settings to function properly with failover clusters. Please contact your storage administrator or storage vendor to check the configuration of the storage to allow it to function properly with failover clusters. Any ideas? Thanks for your help!

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• MySQL cluster: 20Tb x 3K tables

  - by ethrbunny

  Over the next 2-3 years we will be scaling up data collection for a project. As a result the amount of data will grow 10-fold. Our current MySQL installation can keep up with the 2Tb of data but for larger queries there is a fair amount of IOWait. Im investigating a migration to a clustered solution to spread out the IO but am wondering about NDB and what happens to data that doesn't get accessed very often. The impression I get from reading about MySQL cluster is that it relies on memory tables for most of the data. What happens with tables that don't get accessed very often (or at all)? And how does backup work? Can I use MYSQLDUMP or is there a better solution?

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• Creating New WebSphere cluster

  - by user154561

  I need to improve WAS perfomance and want to make cluster. I have two separate machines with WebSpphere 7 on it. As I see to do this, I need to add node from my second (remote) WAS to the first one. I try to use "Add node" from console, but without success. It can't find host when I try to execute it. WAS help says about host: Specifies the host name or IP address of the node to add to the cell. A WebSphere Application Server instance must be running on this machine. Does that mean that I cannot add node from a remote machine with "add node?"

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• Receiving a notification on a Cluster Group Failover

  - by Diego

  Hi all, I have several Windows Cluster set up and I have the need of keeping track of failovers. I'd need to receive a notification of sort whenever a group fails over. I've seen some examples around, but I can't rely on the approach of just sending a message whenever the resources are stopped/restarted as it would generate too many false alarms. In few words, I need to be notified if and only if the group really fails over. I was thinking that probably the best way is monitoring the System Event Log, but, if possible, I'd prefer not having to write a script/program from scratch for this issue. Is there any script/product that already does it? Thanks.

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• Can standard Sun javac do incremental compiling?

  - by calavera.info

  Recently I started to use Eclipse's java compiler, because it is significantly faster than standard javac. I was told that it's faster because it performs incremental compiling. But I'm still a bit unsure about this since I can't find any authoritative documentation about both - eclispse's and sun's - compilers "incremental feature". Is it true that Sun's compiler always compiles every source file and Eclipse's compiler compile only changed files and those that are affected by such a change?

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• Glassfish 3 Cant update JDK no way

  - by Parhs

  Hello.. I was using 1.6.0_19 jdk and installed 1.6.0_20 jdk.. Glassfish doesnt like that... Here are my windows environment variables.. ALLUSERSPROFILE=C:\ProgramData ANT_HOME=C:\apache-ant-1.8.1\ APPDATA=C:\Users\Parhs\AppData\Roaming CommonProgramFiles=C:\Program Files\Common Files COMPUTERNAME=PARHS-PC ComSpec=C:\Windows\system32\cmd.exe FP_NO_HOST_CHECK=NO HOMEDRIVE=C: HOMEPATH=\Users\Parhs JAVA_HOME=C:\Program Files\Java\jdk1.6.0_20\ LOCALAPPDATA=C:\Users\Parhs\AppData\Local LOGONSERVER=\\PARHS-PC NUMBER_OF_PROCESSORS=2 OS=Windows_NT Path=C:\Program Files\PHP\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wb em;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Toshiba\Bluetoot h Toshiba Stack\sys\;C:\Program Files\Microsoft SQL Server\90\Tools\binn\;C:\apa che-ant-1.8.1\bin PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC PHPRC=C:\Program Files\PHP\php.ini PROCESSOR_ARCHITECTURE=x86 PROCESSOR_IDENTIFIER=x86 Family 6 Model 14 Stepping 8, GenuineIntel PROCESSOR_LEVEL=6 PROCESSOR_REVISION=0e08 ProgramData=C:\ProgramData ProgramFiles=C:\Program Files PROMPT=$P$G PSModulePath=C:\Windows\system32\WindowsPowerShell\v1.0\Modules\ PUBLIC=C:\Users\Public SESSIONNAME=Console SystemDrive=C: SystemRoot=C:\Windows TEMP=C:\Users\Parhs\AppData\Local\Temp TMP=C:\Users\Parhs\AppData\Local\Temp USERDOMAIN=Parhs-PC USERNAME=Parhs USERPROFILE=C:\Users\Parhs VS90COMNTOOLS=C:\Program Files\Microsoft Visual Studio 9.0\Common7\Tools\ windir=C:\Windows Also here is my asenv.bat REM DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. REM REM Copyright 2004-2009 Sun Microsystems, Inc. All rights reserved. REM REM Use is subject to License Terms REM set AS_IMQ_LIB=....\mq\lib set AS_IMQ_BIN=....\mq\bin set AS_CONFIG=..\config set AS_INSTALL=.. set AS_DEF_DOMAINS_PATH=..\domains set AS_DERBY_INSTALL=....\javadb set AS_JAVA="C:\Program Files\Java\jdk1.6.0_20" And although restarting system and server i am getting this report Operating System Information: Name of the Operating System: Windows 7 Binary Architecture name of the Operating System: x86, Version: 6.1 Number of processors available on the Operating System: 2 System load on the available processors for the last minute: -1.0. (Sum of running and queued runnable entities per minute) General Java Runtime Environment Information for the VM: 6152@Parhs-PC JRE BootClassPath: C:\glassfishv3\glassfish/modules/endorsed\javax.annotation.jar;C:\glassfishv3\glassfish/modules/endorsed\jaxb-api-osgi.jar;C:\glassfishv3\glassfish/modules/endorsed\webservices-api-osgi.jar;C:\Program Files\Java\jdk1.6.0_19\jre\lib\resources.jar;C:\Program Files\Java\jdk1.6.0_19\jre\lib\rt.jar;C:\Program Files\Java\jdk1.6.0_19\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.6.0_19\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.6.0_19\jre\lib\jce.jar;C:\Program Files\Java\jdk1.6.0_19\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.6.0_19\jre\classes;C:\glassfishv3\glassfish\lib\monitor\btrace-boot.jar JRE ClassPath: C:\glassfishv3\glassfish\modules\glassfish.jar;C:\glassfishv3\glassfish\lib\monitor\btrace-agent.jar JRE Native Library Path: C:\Program Files\Java\jdk1.6.0_19\bin;.;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Program Files\PHP\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Toshiba\Bluetooth Toshiba Stack\sys\;C:\Program Files\Microsoft SQL Server\90\Tools\binn\;C:\apache-ant-1.8.1\bin JRE name: Java HotSpot(TM) Client VM Vendor: Sun Microsystems Inc. Version: 16.2-b04 List of System Properties for the Java Virtual Machine: ANTLR_USE_DIRECT_CLASS_LOADING = true AS_CONFIG = C:\glassfishv3\glassfish\config\..\config AS_DEF_DOMAINS_PATH = C:\glassfishv3\glassfish\config\..\domains AS_DERBY_INSTALL = C:\glassfishv3\glassfish\config\..\..\javadb AS_IMQ_BIN = C:\glassfishv3\glassfish\config\..\..\mq\bin AS_IMQ_LIB = C:\glassfishv3\glassfish\config\..\..\mq\lib AS_INSTALL = C:\glassfishv3\glassfish\config\.. AS_JAVA = C:\Program Files\Java\jdk1.6.0_20\jre GlassFish_Platform = Felix awt.toolkit = sun.awt.windows.WToolkit catalina.base = C:\glassfishv3\glassfish\domains\domain1 catalina.home = C:\glassfishv3\glassfish\domains\domain1 catalina.useNaming = false com.sun.aas.configRoot = C:\glassfishv3\glassfish\config com.sun.aas.derbyRoot = C:\glassfishv3\javadb com.sun.aas.domainsRoot = C:\glassfishv3\glassfish\domains com.sun.aas.hostName = Parhs-PC com.sun.aas.imqBin = C:\glassfishv3\mq\bin com.sun.aas.imqLib = C:\glassfishv3\mq\lib com.sun.aas.installRoot = C:\glassfishv3\glassfish com.sun.aas.installRootURI = file:/C:/glassfishv3/glassfish/ com.sun.aas.instanceName = server com.sun.aas.instanceRoot = C:\glassfishv3\glassfish\domains\domain1 com.sun.aas.instanceRootURI = file:/C:/glassfishv3/glassfish/domains/domain1/ com.sun.aas.javaRoot = C:\Program Files\Java\jdk1.6.0_19\jre com.sun.enterprise.config.config_environment_factory_class = com.sun.enterprise.config.serverbeans.AppserverConfigEnvironmentFactory com.sun.enterprise.hk2.cacheDir = C:\glassfishv3\glassfish\domains\domain1\osgi-cache\felix com.sun.enterprise.jaccprovider.property.repository = C:\glassfishv3\glassfish\domains\domain1/generated/policy com.sun.enterprise.security.httpsOutboundKeyAlias = s1as common.loader = ${catalina.home}/common/classes,${catalina.home}/common/endorsed/*.jar,${catalina.home}/common/lib/*.jar eclipselink.security.usedoprivileged = true ejb.home = C:\glassfishv3\glassfish\modules\ejb felix.config.properties = file:/C:/glassfishv3/glassfish/osgi/felix/conf/config.properties felix.fileinstall.bundles.new.start = true felix.fileinstall.debug = 1 felix.fileinstall.dir = C:\glassfishv3\glassfish/modules/autostart/ felix.fileinstall.poll = 5000 felix.system.properties = file:/C:/glassfishv3/glassfish/osgi/felix/conf/system.properties file.encoding = Cp1253 file.encoding.pkg = sun.io file.separator = \ glassfish.version = GlassFish v3 (build 74.2) hk2.startup.context.args = #Mon Jun 07 20:27:37 EEST 2010 -startup-classpath=C\:\\glassfishv3\\glassfish\\modules\\glassfish.jar;C\:\\glassfishv3\\glassfish\\lib\\monitor\\btrace-agent.jar __time_zero=1275931657334 hk2.startup.context.mainModule=org.glassfish.core.kernel -startup-args=--domain,,,domain1,,,--domaindir,,,C\:\\glassfishv3\\glassfish\\domains\\domain1 --domain=domain1 -startup-classname=com.sun.enterprise.glassfish.bootstrap.ASMain --domaindir=C\:\\glassfishv3\\glassfish\\domains\\domain1 hk2.startup.context.root = C:\glassfishv3\glassfish\modules http.nonProxyHosts = localhost|127.0.0.1|Parhs-PC java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment java.awt.printerjob = sun.awt.windows.WPrinterJob java.class.path = C:\glassfishv3\glassfish\modules\glassfish.jar;C:\glassfishv3\glassfish\lib\monitor\btrace-agent.jar java.class.version = 50.0 java.endorsed.dirs = C:\glassfishv3\glassfish/modules/endorsed;C:\glassfishv3\glassfish/lib/endorsed java.ext.dirs = C:\Program Files\Java\jdk1.6.0_19\jre/lib/ext;C:\Program Files\Java\jdk1.6.0_19\jre/jre/lib/ext;C:\glassfishv3\glassfish\domains\domain1/lib/ext java.home = C:\Program Files\Java\jdk1.6.0_19\jre java.io.tmpdir = C:\Users\Parhs\AppData\Local\Temp\ java.library.path = C:\Program Files\Java\jdk1.6.0_19\bin;.;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Program Files\PHP\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Toshiba\Bluetooth Toshiba Stack\sys\;C:\Program Files\Microsoft SQL Server\90\Tools\binn\;C:\apache-ant-1.8.1\bin java.net.useSystemProxies = true java.rmi.server.randomIDs = true java.runtime.name = Java(TM) SE Runtime Environment java.runtime.version = 1.6.0_19-b04 java.security.auth.login.config = C:\glassfishv3\glassfish\domains\domain1/config/login.conf java.security.policy = C:\glassfishv3\glassfish\domains\domain1/config/server.policy java.specification.name = Java Platform API Specification java.specification.vendor = Sun Microsystems Inc. java.specification.version = 1.6 java.util.logging.config.file = C:\glassfishv3\glassfish\domains\domain1\config\logging.properties java.vendor = Sun Microsystems Inc. java.vendor.url = http://java.sun.com/ java.vendor.url.bug = http://java.sun.com/cgi-bin/bugreport.cgi java.version = 1.6.0_19 java.vm.info = mixed mode java.vm.name = Java HotSpot(TM) Client VM java.vm.specification.name = Java Virtual Machine Specification java.vm.specification.vendor = Sun Microsystems Inc. java.vm.specification.version = 1.0 java.vm.vendor = Sun Microsystems Inc. java.vm.version = 16.2-b04 javax.net.ssl.keyStore = C:\glassfishv3\glassfish\domains\domain1/config/keystore.jks javax.net.ssl.keyStorePassword = changeit javax.net.ssl.trustStore = C:\glassfishv3\glassfish\domains\domain1/config/cacerts.jks javax.net.ssl.trustStorePassword = changeit javax.rmi.CORBA.PortableRemoteObjectClass = com.sun.corba.ee.impl.javax.rmi.PortableRemoteObject javax.rmi.CORBA.StubClass = com.sun.corba.ee.impl.javax.rmi.CORBA.StubDelegateImpl javax.rmi.CORBA.UtilClass = com.sun.corba.ee.impl.javax.rmi.CORBA.Util javax.security.jacc.PolicyConfigurationFactory.provider = com.sun.enterprise.security.provider.PolicyConfigurationFactoryImpl jdbc.drivers = org.apache.derby.jdbc.ClientDriver jpa.home = C:\glassfishv3\glassfish\modules\jpa line.separator = org.glassfish.web.rfc2109_cookie_names_enforced = false org.jvnet.hk2.osgimain.autostartBundles = osgi-adapter.jar, org.apache.felix.shell.jar, org.apache.felix.shell.remote.jar, org.apache.felix.configadmin.jar, org.apache.felix.fileinstall.jar org.jvnet.hk2.osgimain.bundlesDir = C:\glassfishv3\glassfish\modules org.jvnet.hk2.osgimain.excludedSubDirs = autostart/ org.omg.CORBA.ORBClass = com.sun.corba.ee.impl.orb.ORBImpl org.omg.CORBA.ORBSingletonClass = com.sun.corba.ee.impl.orb.ORBSingleton org.osgi.framework.storage = C:\glassfishv3\glassfish\domains\domain1\osgi-cache\felix os.arch = x86 os.name = Windows 7 os.version = 6.1 osgi.shell.telnet.ip = 127.0.0.1 osgi.shell.telnet.maxconn = 1 osgi.shell.telnet.port = 6666 package.access = package.definition = path.separator = ; security.home = C:\glassfishv3\glassfish\modules\security server.loader = ${catalina.home}/server/classes,${catalina.home}/server/lib/*.jar shared.loader = ${catalina.home}/shared/classes,${catalina.home}/shared/lib/*.jar sun.arch.data.model = 32 sun.boot.class.path = C:\glassfishv3\glassfish/modules/endorsed\javax.annotation.jar;C:\glassfishv3\glassfish/modules/endorsed\jaxb-api-osgi.jar;C:\glassfishv3\glassfish/modules/endorsed\webservices-api-osgi.jar;C:\Program Files\Java\jdk1.6.0_19\jre\lib\resources.jar;C:\Program Files\Java\jdk1.6.0_19\jre\lib\rt.jar;C:\Program Files\Java\jdk1.6.0_19\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.6.0_19\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.6.0_19\jre\lib\jce.jar;C:\Program Files\Java\jdk1.6.0_19\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.6.0_19\jre\classes;C:\glassfishv3\glassfish\lib\monitor\btrace-boot.jar sun.boot.library.path = C:\Program Files\Java\jdk1.6.0_19\jre\bin sun.cpu.endian = little sun.cpu.isalist = pentium_pro+mmx pentium_pro pentium+mmx pentium i486 i386 i86 sun.desktop = windows sun.io.unicode.encoding = UnicodeLittle sun.java.launcher = SUN_STANDARD sun.jnu.encoding = Cp1253 sun.management.compiler = HotSpot Client Compiler sun.os.patch.level = user.country = GR user.dir = C:\glassfishv3\glassfish\domains\domain1 user.home = C:\Users\Parhs user.language = el user.name = Parhs user.timezone = Europe/Athens user.variant = web.home = C:\glassfishv3\glassfish\modules\web weld.home = C:\glassfishv3\glassfish\modules\weld Why it is so damn hard??? What am i missing?

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• Intermittent unavailability of an instance in a failover cluster while a standby node is offline in

  - by Emil Fridriksson

  Hi everyone. I've got a small failover cluster that I run for the websites my company has. During a RAM upgrade of the standby server, our websites started to show errors about not being able to access the database server. I verified that the instance was indeed up and the server accessable via remote desktop. I also tried a SQL connection to it and it worked, but that might have been after it became available again. This happened on and off until we were able to roll back the hardware changes that were in progress on the standby server and we were able to bring it back up. There was nothing of interest in the SQL Server log, but there is a continous log for the whole duration of the problem, so there was no restart of the SQL Server service. The event viewer is of more interest, since it shows events relating to the heartbeat network card, but I don't know how that would affect the availability of the server, since the standby node is offline. I'd appreciate any help you can provide, it's not very redundant if the setup depends on the standby server being up. :) Here are the event logs from the time of the problem, I include all of them since I can't seem to see what could possibly be the cause of the problem. Event log: http://hlekkir.com:800/htmltable.htm

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• 3 Servers, is this is a cluster?

  - by Andy Barlow

  Hello, At the moment I have one Ubuntu server, 9.10, running with a simple Samba share, a mail server, DNS server and DHCP server. Mostly its just there for file sharing and email server. I also have 2 other servers that are exactly the same hardware and spec as the first, which have an rsync set up to retrieve the shared folders and backs them up. However, if the first server goes down, all of our shares disappear along with our mail and the system must be rebuilt. Also I tend to find if people are downloading a large amount from the file server, no-one can access there emails - especially in the morning when everyone is signing in at once. Would it be more beneficial for me to have all 3 servers, all running the same services, doing the same thing with some sort of cluster with load balancing? I'm not really sure where to begin looking, or how to go about such a setup where 3 servers are all identical, but perhaps one acts as the main load balancer?? If someone can point me in the right direction, or if this simply sounds like one of those Enterprise Cloud's that is now a default setup in Ubuntu Server 9.10+, then I'll go down that route. Cheers in advance. Andy

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• Cluster FIle System

  - by Ben

  We are looking for to choose a clustered file system for our in house appplication. Let me first highlight my requirement. we have a storage and 2 servers at present.We get the data files from remote servers to our server and on both servers we are running our application to access those data and make a final result as per our requirements. In future may be after 3-4 months, we can add another servers in current cluster pool to handle more data load from remote location data senders. So my requirement is that to integrate same storage partition on 2-3 servers , it might be 4-5 more servers in future, My application read data from storage partition and write back to storage partition. Is there any bottleneck / limitation from RHCS , GFS2 or anything.? We are new with RHCS + GFS and all. Can we have any other better approach or someway to deal with our requirement light way? what is the best OS version for this ? how's RHEL 6.4 64 bit ? please share some case study or some gudie reference as per past experiences with such environnmnets Regards, Ben

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• 3 Server, is this a cluster scenario?

  - by HornedBeast

  Hello, At the moment I have one Ubuntu server, 9.10, running with a simple Samba share, a mail server, DNS server and DHCP server. Mostly its just there for file sharing and email server. I also have 2 other servers that are exactly the same hardware and spec as the first, which have an rsync set up to retrieve the shared folders and backs them up. However, if the first server goes down, all of our shares disappear along with our mail and the system must be rebuilt. Also I tend to find if people are downloading a large amount from the file server, no-one can access there emails - especially in the morning when everyone is signing in at once. Would it be more beneficial for me to have all 3 servers, all running the same services, doing the same thing with some sort of cluster with load balancing? In short, how can I get the best out of my 3 hardware servers? I'm not really sure where to begin looking, or how to go about such a setup where 3 servers are all identical, but perhaps one acts as the main load balancer?? If someone can point me in the right direction, or if this simply sounds like one of those Enterprise Cloud's that is now a default setup in Ubuntu Server 9.10+, then I'll go down that route. Cheers in advance. Andy

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• Can I format a Veritas cluster shared volume from windows?

  - by spaghettidba

  We have a Microsoft Failover Cluster with dynamic disks managed by Veritas Storage Foundation. Today the sysadmins added a new disk for SQL Server but the cluster size on the volume was wrong, so I issued a quick format to change it. The disk volume failed, the SQL Server group failed as well and the cluster became unresponsive. After some minutes I managed to fail over to a passive node. The SAN admins say it's my fault because I shouldn't have formatted the disk from the Windows format applet, but I should have used Veritas Enterprise Administrator instead. Can a format operation bring offline a whole cluster group this way? Relevant error messages: From the eventlog: The cluster resource host subsystem (RHS) stopped unexpectedly. An attempt will be made to restart it. This is usually due to a problem in a resource DLL. Please determine which resource DLL is causing the issue and report the problem to the resource vendor. From the cluster.log ERR [RCM] rcm::RcmResControl::DoResourceControl: ERROR_RESOURCE_CALL_TIMED_OUT(5910)' because of 'Control(STORAGE_GET_DISK_INFO_EX) to resource 'NameOfTheDiskGroup' timed out.' Veritas Documentation: Excerpt from Symantec's documentation: Note: Before manually creating the resource, you must format the cluster-shared volume with NTFS using the VEA GUI and mount it on the node where you are trying to create the resource. Does this mean the disk cannot be formatted from Windows? I don't read it that way. For the record, I formatted many disks using the Windows applet in the past and nothing bad happened.

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• DotNetOpenAuth RelayParty not working on load balanced cluster

  - by Garth

  We're trying to move an ASP.NET MVC application, which uses DotNetOpenAuth OpenID Version 3.4.1, from a single server web garden to a physical server cluster held behind a hardware load balancer. Our old setup (OpenID RP working): Browser = SHTTP = Server = WebGarden = Nonce/Session Store Our new setup (OpenID RP not working): Browser = SHTTP = Load Balancer = HTTP = Cluster Node = WebGarden = Nonce/Session Store DB When we authenticate with the new setup we are correctly redirected to the OpenID Provider but after authenticated we are redirected back to our cluster (relay party) and get the following exception: Exception DotNetOpenAuth.Messaging.ProtocolException: Redirects on POST requests that are to untrusted servers is not supported. at DotNetOpenAuth.Messaging.ErrorUtilities.VerifyProtocol(Boolean condition, String message, Object[] args) in c:\TeamCity\buildAgent\work\bf9e2ca68b75a334\src\DotNetOpenAuth\Messaging\ErrorUtilities.cs:line 235 at DotNetOpenAuth.Messaging.UntrustedWebRequestHandler.GetResponse(HttpWebRequest request, DirectWebRequestOptions options) in c:\TeamCity\buildAgent\work\bf9e2ca68b75a334\src\DotNetOpenAuth\Messaging\UntrustedWebRequestHandler.cs:line 258 at DotNetOpenAuth.OpenId.ChannelElements.OpenIdChannel.GetDirectResponse(HttpWebRequest webRequest) in c:\TeamCity\buildAgent\work\bf9e2ca68b75a334\src\DotNetOpenAuth\OpenId\ChannelElements\OpenIdChannel.cs:line 277 at DotNetOpenAuth.Messaging.Channel.RequestCore(IDirectedProtocolMessage request) in c:\TeamCity\buildAgent\work\bf9e2ca68b75a334\src\DotNetOpenAuth\Messaging\Channel.cs:line 542 at DotNetOpenAuth.Messaging.Channel.Request(IDirectedProtocolMessage requestMessage) in c:\TeamCity\buildAgent\work\bf9e2ca68b75a334\src\DotNetOpenAuth\Messaging\Channel.cs:line 425 at DotNetOpenAuth.Messaging.Channel.Request[TResponse](IDirectedProtocolMessage requestMessage) in c:\TeamCity\buildAgent\work\bf9e2ca68b75a334\src\DotNetOpenAuth\Messaging\Channel.cs:line 405 at DotNetOpenAuth.OpenId.ChannelElements.SigningBindingElement.ProcessIncomingMessage(IProtocolMessage message) in c:\TeamCity\buildAgent\work\bf9e2ca68b75a334\src\DotNetOpenAuth\OpenId\ChannelElements\SigningBindingElement.cs:line 154 at DotNetOpenAuth.Messaging.Channel.ProcessIncomingMessage(IProtocolMessage message) in c:\TeamCity\buildAgent\work\bf9e2ca68b75a334\src\DotNetOpenAuth\Messaging\Channel.cs:line 992 at DotNetOpenAuth.OpenId.ChannelElements.OpenIdChannel.ProcessIncomingMessage(IProtocolMessage message) in c:\TeamCity\buildAgent\work\bf9e2ca68b75a334\src\DotNetOpenAuth\OpenId\ChannelElements\OpenIdChannel.cs:line 172 at DotNetOpenAuth.Messaging.Channel.ReadFromRequest(HttpRequestInfo httpRequest) in c:\TeamCity\buildAgent\work\bf9e2ca68b75a334\src\DotNetOpenAuth\Messaging\Channel.cs:line 386 at DotNetOpenAuth.OpenId.RelyingParty.OpenIdRelyingParty.GetResponse(HttpRequestInfo httpRequestInfo) in c:\TeamCity\buildAgent\work\bf9e2ca68b75a334\src\DotNetOpenAuth\OpenId\RelyingParty\OpenIdRelyingParty.cs:line 501 We have added a machines involved into the trusted machine list and turned off requires ssl but it makes no difference. We even tried removing out nonce store and using a stateless connection, but that didn't work either. We always get the same error. We suspected the issue is arising as a result of the cluster node having a different IP from the load balancer when it connects to the OpenID Provider, but we're not sure. Any ideas?

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• Invalid message signature when running OpenId Provider on Cluster

  - by Garth

  Introduction We have an OpenID Provider which we created using the DotNetOpenAuth component. Everything works great when we run the provider on a single node, but when we move the provider to a load balanced cluster where multiple servers are handling requests for each session we get issue with the message signing as the DotNetOpenAuth component seems to be using something unique from each cluster node to create the signature. Exception DotNetOpenAuth.Messaging.Bindings.InvalidSignatureException: Message signature was incorrect. at DotNetOpenAuth.OpenId.ChannelElements.SigningBindingElement.ProcessIncomingMessage(IProtocolMessage message) in c:\BuildAgent\work\7ab20c0d948e028f\src\DotNetOpenAuth\OpenId\ChannelElements\SigningBindingElement.cs:line 139 at DotNetOpenAuth.Messaging.Channel.ProcessIncomingMessage(IProtocolMessage message) in c:\BuildAgent\work\7ab20c0d948e028f\src\DotNetOpenAuth\Messaging\Channel.cs:line 940 at DotNetOpenAuth.OpenId.ChannelElements.OpenIdChannel.ProcessIncomingMessage(IProtocolMessage message) in c:\BuildAgent\work\7ab20c0d948e028f\src\DotNetOpenAuth\OpenId\ChannelElements\OpenIdChannel.cs:line 172 at DotNetOpenAuth.Messaging.Channel.ReadFromRequest(HttpRequestInfo httpRequest) in c:\BuildAgent\work\7ab20c0d948e028f\src\DotNetOpenAuth\Messaging\Channel.cs:line 378 at DotNetOpenAuth.OpenId.RelyingParty.OpenIdRelyingParty.GetResponse(HttpRequestInfo httpRequestInfo) in c:\BuildAgent\work\7ab20c0d948e028f\src\DotNetOpenAuth\OpenId\RelyingParty\OpenIdRelyingParty.cs:line 493 Setup We have the machine config setup to use the same machine key on all cluster nodes and we have setup an out of process session with SQL Server. Question How do we configure the key used by DotNetOpenAuth to sign its messages so that the client will trust responses from all servers in the cluster during the same session?

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• FAQ: Reshipping a Sun Certification

  - by Paul Sorensen

  If you obtained a Sun Certification before September 1, 2010, your success kit was shipped to the mailing address on record in your profile at certmanager.net/sun. At this time, if you require a reshipment for any reason of your original Sun Certification Certificate (it got damaged in the mail, you did not receive it, it needs to be sent to a different address, etc...), you will now receive access to an electronic reproduction of your original Certificate called an eCertificate. The Sun Certification ID card is no longer available and cannot be ordered from Oracle. This is to allow us to streamline this reshipping process and allow candidates to receive these certificates as quickly as possible.Candidates who earned a Java, Oracle Solaris, MySQL, NetBeans or OpenOffice.org certification on or after September 1, 2010 will receive their success kits in the mail within 6-8 weeks of completing the final certification requirement.

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• Article about Sun ZFS Storage Appliances

  - by Owen Allen

  Sun ZFS Storage Appliances are versatile storage systems. Discovering and managing them in Ops Center, though, makes them even more versatile. If you discover a Sun ZFS Storage Appliance in Ops Center 12c, you can create iSCSI and Fibre Channel LUNS, and make the LUNs available to server pools and virtualization hosts as a storage library. Barbara Higgins has written an excellent article that walks you through the process of setting up a Sun ZFS Storage Appliance and discovering and managing it in Ops Center. If you're looking into ways to make a Sun ZFS Storage Appliance work for you, it's worth a look.

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• Learn All About MySQL Cluster

  - by Antoinette O'Sullivan

  Just released - the all new MySQL Cluster training course. This MySQL Cluster training teaches you how to install and configure a real-time database cluster at the core of your application. Expert instructors will teach you how to design and maintain your clusters for high availability and scalability by using MySQL Cluster's open-source and enterprise components. This 4-day training course is a must for those who want to learn about MySQL Cluster as you will not only learn about the concepts and features but you will get extensive hands-on experience. You can follow this training course from your own desk via a live-virtual training or by traveling to an education center to follow this course. Be the first to influence the schedule for this newly released course by registering your interest on the Oracle University portal. For more information about the authentic MySQL curriculum, go to http://education.oracle.com/mysql

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