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  • (simple) linux HA with vmware vsphere?

    - by derhelge
    I hope my upcoming question is specific enough, and you are able and willing to support :-) We have several openSUSE VMs in an ESX-Cluster (three ESX-Servers) with an attached iSCSI-SAN. All of those Linux VMs are "single point of failure"-configured, which means in the case of a Web-Server: LAMP, storage, etc. everything on this machine. This was very simple and in case of a failure (in the last years: kernel panics or apache crashes) a simple reboot triggered by a script did it. But the problem is: How to upgrade/maintain the w(eb-)application or the underlying OS without downtime? This wasn't really managable and i did this in the early morning ;) How can i achieve a "simple" High-Availability Cluster now? I thought of: DRBD with heartbeat with 2 VMs. And for the storage a RDM (raw device mapped) LUN and change the read-write-permissions for both VMs. Is this a good idea? Anyone has a better solution?

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  • configure cisco catalyst 3560g with an egress uplink

    - by imaginative
    Currently my setup has our egress uplink connected directly to an external interface on a linux router/firewall/nat gateway. Since the linux box is a single point of failure, I've since setup two openbsd boxes using carp+pf+pfsync in order to gain some additional redundancy. the problem is, I only have one egress uplink (it's still a single point of failure) but need to get it to speak to the active carp node in my openbsd cluster which will server as my new router/firewall/nat cluster. Is there anything specific I need to do on a 3560G in order for me to be able to: 1) Drop the egress uplink into a port 2) Drop one link from the switch to a firewall 2) Drop a second link from a switch to the firewall This is so if one box dies, the other still has the egress link to the switch. Is putting them into one VLAN enough? Anything else that needs to go into the configuration for this setup to work?

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  • Rugged Netbook and software options for Running R statistical software?

    - by Thomas
    I am interested in purchasing a netbook to do field research in another country. My hardware specifications for the nebtook: -Be rugged enough to survive a bit of wear and tear -Fairly fast processing (the ability to upgrade from 1GB of RAM to 2GB) -A battery life of longer than 6 hours -At least a 10 inch screen -A decent camera for Skyping My software needs: -Be able run a Spreadsheet program to do basic data input (like Excel or Open Office) -Use the Open Source Statistical Program R to do basic data analysis (Regression, data analysis etc.) -Word Processing (Word or Open Office) Do you have any suggestions on which models or brands my fit my needs? Some of the models I was considering: Samsung NB-30 Toshiba NB 305 Asus Eee PC 1005HA Lenovo S10-2 Also any recommendations on the best software to load on the aforementioned Netbooks. I saw this resource from [livehacker][6] Any comments. Thanks for your help! -Thomas

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  • libvirt + ESX (HTTP response code 400 for call to 'Login')

    - by Coops
    I'm trying to connect to a vSphere cluster using the information from the libvirt documentation. $ virsh -c "vpx://[email protected]/dc1/dc1-cluster-e01/dc1-vsphere-e04/?no_verify=1" Enter root's password for 10.51.4.11: error: internal error HTTP response code 400 for call to 'Login' error: failed to connect to the hypervisor I seem to be able to establish a connection, but it fails with a "HTTP code 400". If I provide the incorrect password it fails with a 'login credentials' error, so it looks like I am getting a connection, but it's failing for another reason. Wireshark is no help as it's all done over SSL/TLS. Any thoughts folks? UPDATE: 15:21 28/02/11 FYI - I'm running libvirt-0.8.3 (the Ubuntu package recompiled with the ESX flag enabled). When I put virsh into debug mode it returns this: [snip] Enter root's password for 10.51.4.11: 15:19:09.011: debug : do_open:1249 : driver 3 ESX returned ERROR 15:19:09.011: debug : virUnrefConnect:294 : unref connection 0x98aa8f8 1 15:19:09.011: debug : virReleaseConnect:249 : release connection 0x98aa8f8 error: internal error HTTP response code 400 for call to 'Login' error: failed to connect to the hypervisor

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  • DPM Coordinator Service is not responding

    - by Anatoly Vilchinsky
    Hi dear Gurus! I'm in stuck point now, so please at least try to help me. I've installed DPM 2010 on cluster server (w2k8 r2), everything was fine. Than I've tried tot install Protection Agent on both server of my cluster, but I'm getting error Error 312: The agent operation failed because the DPM Agent Coordinator service is not responding. Error details: The service cannot be started, either because it is disabled or because it has no enabled devices associated with it (0x80070422) Recommended action: Restart the DPM Agent Coordinator service on . And the thing is that I'm totally can't see DPM Agent Coordinator service not on the localhost, nor on the second server. All the suggestion, that I've found in the internet are suggesting to restart this service, but how can I perform this if the one is absent? I'll be glad for any help

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  • Horrible performing RAID

    - by Philip
    I have a small GlusterFS Cluster with two storage servers providing a replicated volume. Each server has 2 SAS disks for the OS and logs and 22 SATA disks for the actual data striped together as a RAID10 using MegaRAID SAS 9280-4i4e with this configuration: http://pastebin.com/2xj4401J Connected to this cluster are a few other servers with the native client running nginx to serve files stored on it in the order of 3-10MB. Right now a storage server has a outgoing bandwith of 300Mbit/s and the busy rate of the raid array is at 30-40%. There are also strange side-effects: Sometimes the io-latency skyrockets and there is no access possible on the raid for 10 seconds. The file system used is xfs and it has been tuned to match the raid stripe size. Does anyone have an idea what could be the reason for such a bad performing array? 22 Disks in a RAID10 should deliver way more throughput.

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  • Cannot WMI Query root\MSCluster namespace as Local Admin

    - by Matt Zuberko
    I'm trying to use WMI Explorer to query the root\MSCluster namespace on various hosts to obtain cluster resource group and resource object data. I can access the namespace with no issue on Win2K3 cluster nodes but am getting an access denied error attempting to connect to Win2K8 and Win2K8R2 nodes. I can access the root\cimv2 namespace with no issue, just the MSCluster namespace even though I am a local Admin. Is there a feature setting, local security policy or server role I have to be a member of to access the namespace? Thank you!

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  • apache tomcat loadbalancing clustering on ubuntu

    - by user740010
    i am facing a problem in clustering the tomcat with apache as a loadbalancer using mod_jk on ubuntu. i have install apache2 on my ubuntu 11.04 and i have downloaded tomcat7 created two copies and kept them at two different location. 1st one is at /home/net4u/vishal/test/tomcatA 2nd one is at /home/net4u/vishal/test1/tomcatB i have made following changes to server.xml file in /conf folder 1. <Server port="8205" shutdown="SHUTDOWN"> 2. <Connector port="8280" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> 3.<Connector port="8209" protocol="AJP/1.3" redirectPort="8443" /> <Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcatB"> 4. <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> similarly i have modified other tomcat i.e tomcatA server.xml content of the server.xml is as follow: -- <!--The connectors can use a shared executor, you can define one or more named thread pools--> <!-- <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="150" minSpareThreads="4"/> --> <!-- A "Connector" represents an endpoint by which requests are received and responses are returned. Documentation at : Java HTTP Connector: /docs/config/http.html (blocking & non-blocking) Java AJP Connector: /docs/config/ajp.html APR (HTTP/AJP) Connector: /docs/apr.html Define a non-SSL HTTP/1.1 Connector on port 8080 --> <Connector port="8280" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> <!-- A "Connector" using the shared thread pool--> <!-- <Connector executor="tomcatThreadPool" port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> --> <!-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the JSSE configuration, when using APR, the connector should be using the OpenSSL style configuration described in the APR documentation --> <!-- <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" maxThreads="150" scheme="https" secure="true" clientAuth="false" sslProtocol="TLS" /> --> <!-- Define an AJP 1.3 Connector on port 8009 --> <Connector port="8109" protocol="AJP/1.3" redirectPort="8443" /> <!-- An Engine represents the entry point (within Catalina) that processes every request. The Engine implementation for Tomcat stand alone analyzes the HTTP headers included with the request, and passes them on to the appropriate Host (virtual host). Documentation at /docs/config/engine.html --> <!-- You should set jvmRoute to support load-balancing via AJP ie : <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1"> --> <Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcatB"> <!--For clustering, please take a look at documentation at: /docs/cluster-howto.html (simple how to) /docs/config/cluster.html (reference documentation) --> <!-- uncomment for clustering--> <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> <!-- Use the LockOutRealm to prevent attempts to guess user passwords via a brute-force attack --> <Realm className="org.apache.catalina.realm.LockOutRealm"> <!-- This Realm uses the UserDatabase configured in the global JNDI resources under the key "UserDatabase". Any edits that are performed against this UserDatabase are immediately available for use by the Realm. --> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true"> <!-- SingleSignOn valve, share authentication between web applications Documentation at: /docs/config/valve.html --> <!-- <Valve className="org.apache.catalina.authenticator.SingleSignOn" /> --> <!-- Access log processes all example. Documentation at: /docs/config/valve.html Note: The pattern used is equivalent to using pattern="common" --> <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="localhost_access_log." suffix=".txt" pattern="%h %l %u %t &quot;%r&quot; %s %b" resolveHosts="false"/> </Host> </Engine> i have install libapache2-mod-jk step 1. i have Created jk.load file in /etc/apache2/mods-enabled/jk.load content is as follows: LoadModule jk_module /usr/lib/apache2/modules/mod_jk.so Create /etc/apache2/mods-enabled/jk.conf: JkWorkersFile /etc/apache2/workers.properties JkLogFile /var/log/apache2/jk.log JkMount /ecommerce/* worker1 JkMount /images/* worker1 JkMount /content/* worker1 step 2. Created workers.properties file in /etc/apache2/workers.properties content is as follows: workers.tomcat_home=/home/vishal/Desktop/test/tomcatA workers.java_home=/usr/lib/jvm/default-java ps=/ worker.list=tomcatA,tomcatB,loadbalancer   worker.tomcatA.port=8109 worker.tomcatA.host=localhost worker.tomcatA.type=ajp13 worker.tomcatA.lbfactor=1   worker.tomcatB.port=8209 worker.tomcatB.host=localhost worker.tomcatB.type=ajp13 worker.tomcatB.lbfactor=1 worker.loadbalancer.type=lb worker.loadbalancer.balanced_workers=tomcatA,tomcatB worker.loadbalancer.sticky_session=1 i tried the same thing on the windows machine it is working.

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  • VMware Virtual vCenter and High Availability

    - by rufo
    To continue with this question: Should be Vmware vCenter server high available? According to the response there even if vCenter is down HA will continue to work. So, if my vCenter is a VM, using the express sql edition in the same VM, and that VM is hosted in the same cluster it manages (and the cluster is setup for HA): Am I correct to assume that if the host that hosts the vCenter goes down HA will vmotion the vCenter VM to another host and it will continue to function? BTW: my environment is small, two ESXi 5.0 hosts, with about 50 VMs, using iSCSI shared storaged for everything.

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  • How do I remove Slony from a restored PostgreSQL database?

    - by Scott Herbert
    I've restored a database which came from a server on which Slony was running. The server on which the database has been restored does not have Slony installed. When the database restored, there were a lot of errors reported, with Slony related objects not getting created due to Slony related logins being missing. This I thought was not a problem, as losing the Slony objects didn't seem to matter, and infact seemed desirable. However, now I've got an anoying, if not critical problem. Whenever one clicks on a table in the newly restored DB in PGAdmin, a Slony related error popup ... pops up. The first one reads: "An error has occured: ERROR: function _rmscl.getlocalnodeid(unknown) does not exist" I notice that under the Replication node in PGAdmin, that there is a Slony replication cluster. Trying to drop this cluster results in more object missing type errors. Does anyone have any ideas how we can remove the last vestiges of Slony from this database?

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  • NLB RPC server is unavailable on the specified computer

    - by Robin Weston
    Hi guys, Firstly, I'll admit that my networking knowledge is limited so as people request more information I'll update this question accordingly. I am trying to create a NLB Cluster across 2 Windows Server 2008 Web Servers. Neither of the machines are members of a domain, and both have 2 NICs (one for processing external web traffic, and one for communicating internally). I have installed NLB on both machines, and have created a cluster on Host A and added itself to it. However, when I try and add Host B (using the address from the external NIC) I get the following error : "The RPC server is unavailable on the specified computer". On Host B I can see that the RPC service is running fine. I can also ping and RDP from Host A to Host B with no problems either. I have disabled the windows firewall on both machines but that had no effect

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  • How to find date/time used by Cassandra

    - by JDI Lloyd
    Earlier this morning I noticed that one of the nodes in our Cassandra cluster is writing logs an hour in the future, despite the date/time being correct on the OS. A couple of other nodes I checked via logs appear to be writing logs at the correct time. I now need to go through and check each node in our 80 node cluster and ensure cassandra is running on the correct time, problem being is some of the nodes don't write to the logs very often as they aren't doing much... the question is, is there some form of tool/utility (ie nodetool) that can tell me the time that cassandra is running on? All the systems date/times are correct, ntpdate cron in place has been for a while. Servers are set to Belize timezone to avoid DST changes so its nothing to do with that.

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  • Normalize Accept-Encoding via HAProxy for optimized Squid hit rate

    - by Matt Beckman
    Our website infrastructure uses HAProxy for load balancing, a Squid cluster for caching, and application data is on an IIS cluster. We load balance HAProxy by URI to optimize the Squid hit-rate, but we know that Squid is holding different copies of each page based on the Accept-Encoding header passed to it by the browser, and so IE (gzip, deflate) will have a different copy of a cached page than Firefox (gzip,deflate) or Chrome (gzip,deflate,sdch). We want to normalize the Accept-Encoding headers and I think the best place to do so would be in HAProxy. I'd appreciate it if someone could offer some ideas on how to accomplish this without breaking support for clients without gzip or deflate support.

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  • redundant/multi-site terminal server

    - by Adam
    Hi We have a Hyper-V cluster running 5 virtual terminal servers using HA. We need to be able make this system redundant and so if this site was to fail our users could log into the backup system at another location and access their data via the terminal servers. Any ideas? We were thinking of maybe using a NAS which replicated the data to the other location in real-time(pass-through disks)? and having a similar Hyper-V cluster setup in the backup location. However we would need to create the users in both location and create a virtual mirror without the data ie applications, directories, settings etc. Is this the best way to achieve this? We have read that using Hyper-v pass through disks is a big performance de-grade.

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  • Pygrub with DRBD on Xen 3.2

    - by Joril
    Hi all, we have a two-node cluster using DRBD 8.2 on CentOS 5.2 64bit. The cluster runs a few VMs on top of Xen 3.2.1, here's the configuration for an Ubuntu Jaunty VM: name = 'dev' bootloader = '/usr/bin/pygrub' memory = '512' vif = [ 'ip=192.168.1.217,mac=00:16:3E:CD:60:80' ] disk = [ 'phy:/dev/drbd24,xvda1,w', 'phy:/dev/drbd25,xvda2,w' ] As you can see, the disks are specified like "phy:", and as such pygrub doesn't know a thing about the underlying drbd device... So my problem is that even though the VM boots just fine, it doesn't handle the state of the drbd device. As a result, when for some reason the device gets to a secondary/secondary state, the VM won't boot, and I have to manually specify which node is primary. I read that starting with Xen 3.3 pygrub understands the "drbd:" specification, and I think that it would fix my problem, but I can't upgrade Xen at the moment... Is there a workaround? For example, could I use the 3.3 version of pygrub? Thanks!

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  • Windows 7 PC refuses to join domain

    - by Alex
    So, we're wiping clean all PCs at our office and migrating them to a new server cluster and a new domain. Last night I tested on PC and it mostly worked except it refuses to join to the domain. Now, our domain is named like EXAMPLE.COM. When I just type EXAMPLE the PC can't find the domain controller, even though I can ping it find. If I type EXAMPLE.COM it seems to work. How can I get it to work with just EXAMPLE? That's how I got all the new servers int he cluster to work (about 20 of them) and I haven't had any issues... The only difference between the Windows 7 PC(s) and the servers is that the clients will be on a 10.0.3.X network where as the servers are on a 10.0.1.X network. Oh, the domain controller and all the other servers are Windows Server 2008 R2. Suggestions will be highly appreciated!

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  • HDFS datanode startup fails when disks are full

    - by mbac
    Our HDFS cluster is only 90% full but some datanodes have some disks that are 100% full. That means when we mass reboot the entire cluster some datanodes completely fail to start with a message like this: 2013-10-26 03:58:27,295 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Mkdirs failed to create /mnt/local/sda1/hadoop/dfsdata/blocksBeingWritten Only three have to fail this way before we start experiencing real data loss. Currently we workaround it by decreasing the amount of space reserved for the root user but we'll eventually run out. We also run the re-balancer pretty much constantly, but some disks stay stuck at 100% anyway. Changing the dfs.datanode.failed.volumes.tolerated setting is not the solution as the volume has not failed. Any ideas?

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  • JBoss https on port other than 8080 not working

    - by MilindaD
    We have a server with two JBoss instances where one runs on 8080, the other on 8081. We need to have HTTPS enabled for the 8081 server, firstly we tried enabling https on the 8080 port instance by generating the keystore and editing the server.xml and it successfully worked. However when we tried the same thing for 8081 it did not, note that we removed https for the 8080 server first before enabling it for 8081. This is what was used for both server.xml for 8080 and 8081. The only difference was that the port was changed from 8080 to 8081 when trying to enable https for 8081 port instance. What am I doing wrong and what needs to be changed? NOTE : When I meant enabled for 8080 I meant when you visit https:// URL:8484 you will actually be visiting the 8080 port instance. However when ssl is enabled for 8081 and I visit https:// URL:8484 I get that the web page is unavailable. COMMENTLESS VERSION <Server> <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" /> <Listener className="org.apache.catalina.core.JasperListener" /> <Service name="jboss.web"> <!-- https --> <Connector port="8080" address="${jboss.bind.address}" maxThreads="350" maxHttpHeaderSize="8192" emptySessionPath="true" protocol="HTTP/1.1" enableLookups="false" redirectPort="8443" acceptCount="100" connectionTimeout="20000" disableUploadTimeout="true" compression="on" ompressableMimeType="text/html,text/css,text/javascript,application/json,text/xml,text/plain,application/x-javascript,application/javascript"/> <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" maxThreads="150" scheme="https" secure="true" clientAuth="false" sslProtocol="TLS" address="${jboss.bind.address}" keystoreFile="${jboss.server.home.dir}/conf/supun1.keystore" keystorePass="aaaaaa" truststoreFile="${jboss.server.home.dir}/conf/supun1.keystore" truststorePass="aaaaaa" /> <!-- https1 --> <Connector port="8009" address="${jboss.bind.address}" protocol="AJP/1.3" emptySessionPath="true" enableLookups="false" redirectPort="8443" /> <Engine name="jboss.web" defaultHost="localhost" jvmRoute="khms1"> <Realm className="org.jboss.web.tomcat.security.JBossSecurityMgrRealm" certificatePrincipal="org.jboss.security.auth.certs.SubjectDNMapping" allRolesMode="authOnly" /> <Host name="localhost" autoDeploy="false" deployOnStartup="false" deployXML="false" configClass="org.jboss.web.tomcat.security.config.JBossContextConfig" > <Valve className="org.jboss.web.tomcat.service.sso.ClusteredSingleSignOn" /> <Valve className="org.jboss.web.tomcat.service.jca.CachedConnectionValve" cachedConnectionManagerObjectName="jboss.jca:service=CachedConnectionManager" transactionManagerObjectName="jboss:service=TransactionManager" /> </Host> </Engine> </Service> </Server> WITH COMMENTS VERSION <Server> <!--APR library loader. Documentation at /docs/apr.html --> <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" /> <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html --> <Listener className="org.apache.catalina.core.JasperListener" /> <!-- Use a custom version of StandardService that allows the connectors to be started independent of the normal lifecycle start to allow web apps to be deployed before starting the connectors. --> <Service name="jboss.web"> <!-- A "Connector" represents an endpoint by which requests are received and responses are returned. Documentation at : Java HTTP Connector: /docs/config/http.html (blocking & non-blocking) Java AJP Connector: /docs/config/ajp.html APR (HTTP/AJP) Connector: /docs/apr.html Define a non-SSL HTTP/1.1 Connector on port 8080 --> <Connector port="8080" address="${jboss.bind.address}" maxThreads="350" maxHttpHeaderSize="8192" emptySessionPath="true" protocol="HTTP/1.1" enableLookups="false" redirectPort="8443" acceptCount="100" connectionTimeout="20000" disableUploadTimeout="true" compression="on" ompressableMimeType="text/html,text/css,text/javascript,application/json,text/xml,text/plain,application/x-javascript,application/javascript"/> <!-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the JSSE configuration, when using APR, the connector should be using the OpenSSL style configuration described in the APR documentation --> <!-- <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" maxThreads="150" scheme="https" secure="true" keystoreFile="${jboss.server.home.dir}/conf/zara.keystore" keystorePass="zara2010" clientAuth="false" sslProtocol="TLS" compression="on" /> --> <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" maxThreads="150" scheme="https" secure="true" clientAuth="false" sslProtocol="TLS" address="${jboss.bind.address}" keystoreFile="${jboss.server.home.dir}/conf/supun1.keystore" keystorePass="aaaaaa" truststoreFile="${jboss.server.home.dir}/conf/supun1.keystore" truststorePass="aaaaaa" /> <!-- Define an AJP 1.3 Connector on port 8009 --> <Connector port="8009" address="${jboss.bind.address}" protocol="AJP/1.3" emptySessionPath="true" enableLookups="false" redirectPort="8443" /> <Engine name="jboss.web" defaultHost="localhost" jvmRoute="khms1"> <!-- The JAAS based authentication and authorization realm implementation that is compatible with the jboss 3.2.x realm implementation. - certificatePrincipal : the class name of the org.jboss.security.auth.certs.CertificatePrincipal impl used for mapping X509[] cert chains to a Princpal. - allRolesMode : how to handle an auth-constraint with a role-name=*, one of strict, authOnly, strictAuthOnly + strict = Use the strict servlet spec interpretation which requires that the user have one of the web-app/security-role/role-name + authOnly = Allow any authenticated user + strictAuthOnly = Allow any authenticated user only if there are no web-app/security-roles --> <Realm className="org.jboss.web.tomcat.security.JBossSecurityMgrRealm" certificatePrincipal="org.jboss.security.auth.certs.SubjectDNMapping" allRolesMode="authOnly" /> <!-- A subclass of JBossSecurityMgrRealm that uses the authentication behavior of JBossSecurityMgrRealm, but overrides the authorization checks to use JACC permissions with the current java.security.Policy to determine authorized access. - allRolesMode : how to handle an auth-constraint with a role-name=*, one of strict, authOnly, strictAuthOnly + strict = Use the strict servlet spec interpretation which requires that the user have one of the web-app/security-role/role-name + authOnly = Allow any authenticated user + strictAuthOnly = Allow any authenticated user only if there are no web-app/security-roles <Realm className="org.jboss.web.tomcat.security.JaccAuthorizationRealm" certificatePrincipal="org.jboss.security.auth.certs.SubjectDNMapping" allRolesMode="authOnly" /> --> <Host name="localhost" autoDeploy="false" deployOnStartup="false" deployXML="false" configClass="org.jboss.web.tomcat.security.config.JBossContextConfig" > <!-- Uncomment to enable request dumper. This Valve "logs interesting contents from the specified Request (before processing) and the corresponding Response (after processing). It is especially useful in debugging problems related to headers and cookies." --> <!-- <Valve className="org.apache.catalina.valves.RequestDumperValve" /> --> <!-- Access logger --> <!-- <Valve className="org.apache.catalina.valves.AccessLogValve" prefix="localhost_access_log." suffix=".log" pattern="common" directory="${jboss.server.log.dir}" resolveHosts="false" /> --> <!-- Uncomment to enable single sign-on across web apps deployed to this host. Does not provide SSO across a cluster. If this valve is used, do not use the JBoss ClusteredSingleSignOn valve shown below. A new configuration attribute is available beginning with release 4.0.4: cookieDomain configures the domain to which the SSO cookie will be scoped (i.e. the set of hosts to which the cookie will be presented). By default the cookie is scoped to "/", meaning the host that presented it. Set cookieDomain to a wider domain (e.g. "xyz.com") to allow an SSO to span more than one hostname. --> <!-- <Valve className="org.apache.catalina.authenticator.SingleSignOn" /> --> <!-- Uncomment to enable single sign-on across web apps deployed to this host AND to all other hosts in the cluster. If this valve is used, do not use the standard Tomcat SingleSignOn valve shown above. Valve uses a JBossCache instance to support SSO credential caching and replication across the cluster. The JBossCache instance must be configured separately. By default, the valve shares a JBossCache with the service that supports HttpSession replication. See the "jboss-web-cluster-service.xml" file in the server/all/deploy directory for cache configuration details. Besides the attributes supported by the standard Tomcat SingleSignOn valve (see the Tomcat docs), this version also supports the following attributes: cookieDomain see above treeCacheName JMX ObjectName of the JBossCache MBean used to support credential caching and replication across the cluster. If not set, the default value is "jboss.cache:service=TomcatClusteringCache", the standard ObjectName of the JBossCache MBean used to support session replication. --> <Valve className="org.jboss.web.tomcat.service.sso.ClusteredSingleSignOn" /> <!-- Check for unclosed connections and transaction terminated checks in servlets/jsps. Important: The dependency on the CachedConnectionManager in META-INF/jboss-service.xml must be uncommented, too --> <Valve className="org.jboss.web.tomcat.service.jca.CachedConnectionValve" cachedConnectionManagerObjectName="jboss.jca:service=CachedConnectionManager" transactionManagerObjectName="jboss:service=TransactionManager" /> </Host> </Engine> </Service> </Server>

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  • VMware ESX 3.5 Host Health shown as unknown

    - by dunxd
    I have an ESX 3.5 update 5 cluster of five host servers, all fully patched as of this Friday. Today I noticed that one of the servers has the Hardware Health status as unknown in Virtual Center Infrastructure Client. When I look at the Health Status view under configuration for that host, all the items are status Unknown. The server is exactly the same configuration as the others - same model (HP DL360 G5), memory, NICs etc. I have tried restarting the management service with service mgmt-vmware restart but this has not resolved the issue. Asides from this, I am not seeing any issues with the cluster - however, I hate having a blind spot like this. Any ideas?

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  • Has ec2 made self-hosting possible for 'amateur' sysadmins possible?

    - by Blankman
    I'm a developer, and it seems ec2 has made it possible for a amateur sysadmin like me to setup and maintain a fairly large set of servers. Now I don't mean to undermine real sys admins, as I know the value of them but what I am trying to get at is that someone like me can setup and maintain a cluster of servers (front end web servers, with some db servers) using tools like ec2 and capistrano with the help of google. Now this isn't something I would do as a long term thing, but as a startup, one-man operation, I think I can pull this off until business takes off and I can hire this important role out. With ec2, I get my firewall, so I basically open up port 80 on my public facing server, which will run haproxy and route requests to my cluster of servers. Ofcourse I am simplifying the setup, but just want a feel for what you guys think about my perception. My application is a web application, that will be runing Ruby on rails (passenger) and talking to mysql or postgresql.

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  • FullText SQL Server Clustered Service Move

    - by Steve
    I need to move the I drive from one san vendor to another. Microsoft states that you can't move the fulltext http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q304282& and the only way would be remove the cluster and re-install the cluster. Does anyuone know of any other way? Would swapping the old I drive for a new I drive work? Currently on the I drive I just have the fulltext directory and sql server log directory to move. The later I know how to handle. Any help would be greatly appreciated Windows 2003 - SQL Server 2005 32bit and yes this is one of the few 2005 instances that we have left Steve

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  • Problem installing a w2k DC on Hyper-V?

    - by Tony
    Hi, We have a cluster with four node windows 2008 r2 and hyper-v installed. We would like to install 2 VM with role domain controller w2k (the domain is different from the domain of the hyper-v cluster). Do you know if there are any restriction on doing it? Some collegues say that we risk data corruption if we do live migrations. Others speak about the fact that Microsoft don't support w2k any more. And others have doubts because the global catalog server installed on these DC could have loss of performance. Any idea? Thanks Tony

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  • Using rsyslog to create different log files for different processes

    - by user80203
    Scenario: I am running a cluster of machines. Each machine runs various python programs with a unique (across the cluster), but dynamically set, ID. Right now, they are all logging locally. So, I might have logs that look like: process_5.log process_6.log for processes that had ID's 5 and 6. Another machine may have: process_20.log process_25.log I wish to forward these logs to a logserver running rsyslogd. Python's logging facility has a nice syslog handler, so I understand how I could connect to the remote server. What I haven't figured out is how to use templating/DynFile to maintain log separation. e.g. on the logserver, I will want to see: process_5.log process_6.log process_20.log process_25.log which correspond to the logs of the same name on the sending machine. Is there a way to pull this off with rsyslogd templating?

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