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Windows service on a clusterHi,
We have many servers setup as a cluster. When one server crashes, another one take the relay... We want to know if it's possible (I suppose it is) to make a Windows service developed with .NET 2.0 work in a cluster environment. I mean, how to make sure the service will take the relay if one server fails. Is there something special to do or it will work by itself? (I'm not personally used to clusters, we need it at my office and they asked me to get the information because I'm the one who usually develop Windows Services here, so...) thanks ThunderMusic ok, I found, after more searches, that any windows service can be setup on a
cluster, but I'm not sure I understand all the details (when their are any details attached)... does it mean that if the service uses only shared resources (so it's state can be rebuild anytime) if a server fails, another one will take the relay and it will be seemless to the user, is that it? What we would like to do is run the service (automaticaly on windows start) on one of our server and when this server fails, the other server starts the service and take the relay... is it a behavior that can be achieved with a standard Windows Service configured in a cluster? (as I said, I'm don't know much about clusters) thanks a lot ThunderMusic Show quote "ThunderMusic" <NoSpAmdanlatathotmaildotcom@NoSpAm.com> wrote in message news:u81gBbVvGHA.324@TK2MSFTNGP06.phx.gbl... > Hi, > We have many servers setup as a cluster. When one server crashes, another > one take the relay... We want to know if it's possible (I suppose it is) > to make a Windows service developed with .NET 2.0 work in a cluster > environment. I mean, how to make sure the service will take the relay if > one server fails. Is there something special to do or it will work by > itself? (I'm not personally used to clusters, we need it at my office and > they asked me to get the information because I'm the one who usually > develop Windows Services here, so...) > > thanks > > ThunderMusic > When I played around with clustering I discovered that you can specify a
"generic service" and the cluster will restart that service on another server if the primary goes down. A true cluster-aware service would allow for more than just this, however. For example, it would pick up directly where the other service left off, not just restart itself. Show quote "ThunderMusic" <NoSpAmdanlatathotmaildotcom@NoSpAm.com> wrote in message news:%23OnAmnVvGHA.4756@TK2MSFTNGP02.phx.gbl... > ok, I found, after more searches, that any windows service can be setup on a > cluster, but I'm not sure I understand all the details (when their are any > details attached)... does it mean that if the service uses only shared > resources (so it's state can be rebuild anytime) if a server fails, another > one will take the relay and it will be seemless to the user, is that it? > > What we would like to do is run the service (automaticaly on windows start) on > one of our server and when this server fails, the other server starts the > service and take the relay... is it a behavior that can be achieved with a > standard Windows Service configured in a cluster? (as I said, I'm don't know > much about clusters) > > thanks a lot > > ThunderMusic > > "ThunderMusic" <NoSpAmdanlatathotmaildotcom@NoSpAm.com> wrote in message > news:u81gBbVvGHA.324@TK2MSFTNGP06.phx.gbl... >> Hi, >> We have many servers setup as a cluster. When one server crashes, another one >> take the relay... We want to know if it's possible (I suppose it is) to make >> a Windows service developed with .NET 2.0 work in a cluster environment. I >> mean, how to make sure the service will take the relay if one server fails. >> Is there something special to do or it will work by itself? (I'm not >> personally used to clusters, we need it at my office and they asked me to get >> the information because I'm the one who usually develop Windows Services >> here, so...) >> >> thanks >> >> ThunderMusic >> > > Excellent... thanks a lot, that answers my question...
Show quote "Mike Lowery" <selfspam@mouse-potato.com> wrote in message news:Oqwn%23vVvGHA.1512@TK2MSFTNGP03.phx.gbl... > When I played around with clustering I discovered that you can specify a > "generic service" and the cluster will restart that service on another > server if the primary goes down. A true cluster-aware service would allow > for more than just this, however. For example, it would pick up directly > where the other service left off, not just restart itself. > > "ThunderMusic" <NoSpAmdanlatathotmaildotcom@NoSpAm.com> wrote in message > news:%23OnAmnVvGHA.4756@TK2MSFTNGP02.phx.gbl... >> ok, I found, after more searches, that any windows service can be setup >> on a cluster, but I'm not sure I understand all the details (when their >> are any details attached)... does it mean that if the service uses only >> shared resources (so it's state can be rebuild anytime) if a server >> fails, another one will take the relay and it will be seemless to the >> user, is that it? >> >> What we would like to do is run the service (automaticaly on windows >> start) on one of our server and when this server fails, the other server >> starts the service and take the relay... is it a behavior that can be >> achieved with a standard Windows Service configured in a cluster? (as I >> said, I'm don't know much about clusters) >> >> thanks a lot >> >> ThunderMusic >> >> "ThunderMusic" <NoSpAmdanlatathotmaildotcom@NoSpAm.com> wrote in message >> news:u81gBbVvGHA.324@TK2MSFTNGP06.phx.gbl... >>> Hi, >>> We have many servers setup as a cluster. When one server crashes, >>> another one take the relay... We want to know if it's possible (I >>> suppose it is) to make a Windows service developed with .NET 2.0 work in >>> a cluster environment. I mean, how to make sure the service will take >>> the relay if one server fails. Is there something special to do or it >>> will work by itself? (I'm not personally used to clusters, we need it at >>> my office and they asked me to get the information because I'm the one >>> who usually develop Windows Services here, so...) >>> >>> thanks >>> >>> ThunderMusic >>> >> >> > > Such clusters are not Windows failover clusters, Windows clustering is
simply a resource failover technology, no application state is save at all, and it's very hard if not impossible to do in user space code. What you can do is keep track of of application state and maintain restore points in code and restart at a restore point when failover occurs, this is something SQL Server does in a MS Cluster, but here using transaction roll back, but even then in a client server configuration you must pay attention at the client side, a client needs to reconnect and restart the transaction when the resource has failed over to another node. Compare this to Tandem (now HP) Non Stop, which offers a true cluster technology which allowes you to pick up at the point of failure and continue processing on another node, true this is not a "poor man" cluster after all.. Willy. Show quote "Mike Lowery" <selfspam@mouse-potato.com> wrote in message news:Oqwn%23vVvGHA.1512@TK2MSFTNGP03.phx.gbl... | When I played around with clustering I discovered that you can specify a | "generic service" and the cluster will restart that service on another server if | the primary goes down. A true cluster-aware service would allow for more than | just this, however. For example, it would pick up directly where the other | service left off, not just restart itself. | | "ThunderMusic" <NoSpAmdanlatathotmaildotcom@NoSpAm.com> wrote in message | news:%23OnAmnVvGHA.4756@TK2MSFTNGP02.phx.gbl... | > ok, I found, after more searches, that any windows service can be setup on a | > cluster, but I'm not sure I understand all the details (when their are any | > details attached)... does it mean that if the service uses only shared | > resources (so it's state can be rebuild anytime) if a server fails, another | > one will take the relay and it will be seemless to the user, is that it? | > | > What we would like to do is run the service (automaticaly on windows start) on | > one of our server and when this server fails, the other server starts the | > service and take the relay... is it a behavior that can be achieved with a | > standard Windows Service configured in a cluster? (as I said, I'm don't know | > much about clusters) | > | > thanks a lot | > | > ThunderMusic | > | > "ThunderMusic" <NoSpAmdanlatathotmaildotcom@NoSpAm.com> wrote in message | > news:u81gBbVvGHA.324@TK2MSFTNGP06.phx.gbl... | >> Hi, | >> We have many servers setup as a cluster. When one server crashes, another one | >> take the relay... We want to know if it's possible (I suppose it is) to make | >> a Windows service developed with .NET 2.0 work in a cluster environment. I | >> mean, how to make sure the service will take the relay if one server fails. | >> Is there something special to do or it will work by itself? (I'm not | >> personally used to clusters, we need it at my office and they asked me to get | >> the information because I'm the one who usually develop Windows Services | >> here, so...) | >> | >> thanks | >> | >> ThunderMusic | >> | > | > | |  |
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