RE: Queue mirroring with message grouping and clustering on Windows
HA queue replication doesn't help you with load balancing. Clients are not allowed to add or remove messages from replicas. > -Original Message- > From: Rothkin, Steve (NY81) [mailto:steve.roth...@honeywell.com] > Sent: Tuesday, July 16, 2013 11:45 AM > To: users@qpid.apache.org > Subject: RE: Queue mirroring with message grouping and clustering on > Windows > > For what I'm trying to do, is using HA Queue replication between standalone > (NOT clustered) nodes a viable option (one that will give me the high > availability/reliability, load balancing, message grouping, and failover)? Or > is > the clustering required for the message grouping feature to work? > > At http://qpid.apache.org/releases/qpid-0.22/cpp-broker/book/ha-queue- > replication.html it states "When the replica queue is on the active node of a > cluster, there is no automatic failover. Automatic failover will be supported > in > the future, in the meantime you can use the workaround detailed in Section > 1.11.12, "Failover of federation links and queue replication."." > But it doesn't say anything about failover for queues on unclustered nodes -- > is that automatic or is the same (or some other) workaround required? > > > > > From: Steve Huston [mailto:shus...@riverace.com] > > > > > I'm considering a Qpid.22 implementation under MS Windows for > > > > > message queueing. In the future we might go to a mixed > > > > > environment with both Windows and Linux computers. > > > > > For fault tolerance, I want the queues to be mirrored across 2 > > > > > to > > > > > 3 computers which are connected by high speed LAN. Each queue > > > > > will have multiple consumers on different computers (including > > > > > some NOT hosting the queue), so I also need to use the message > > > > > grouping feature to ensure that messages from a single source > > > > > are not processed > > > out of order. > > > > > > > > Ok. > > > > > > > > > 1) Is clustering required to do this (on RabbitMQ it is, but > > > > > RabbitMQ > > > appears > > > > > to not support message grouping yet)? > > > > > > > > For mirroring across a set of nodes for FT, yes. > > > > > > > > > 2) What is required to use clustering on Windows (and is it even > > > available)? > > > > > So far I've read that Corosync is required for clustering and in > > > > > another place (a few years old) I read that Corosync isn't > > > > > ported to/doesn't build on Windows. > > > > > > > > The new HA module in Qpid requires integration with a resource > > > > manager; on Linux this is rgmanager (corosync is involved to > > > > manage the cluster itself, but it's not directly involved with Qpid). > > > > Currently there is no integration with a resource manager on > > > > Windows clusters. It's probably not a gigantic amount of work to > > > > get it there, but it's > > > work that is needed. > > > > > > If there is a mix of linux and windows computers hosting the queues, > > > do they need to use the same (or a compatible) resource manager? > > > > Yes, the brokers participating in the cluster do need to use the same > resource manager. > > > > > As a way of getting around the need for a resource manager on > > > Windows, if I made a cluster of linux machines (or linux VMs running > > > under > > > Windows) to host the mirrored queues would it then be ok/supported > > > to have windows clients (NOT part of the cluster) to write to and read > from the queues? > > > > Absolutely. > > > > > If I wanted to try to do the windows resource manager > > > implemtentation (assuming my boss would allow it, and given that I > > > have zero experience developing within Qpid), is there existing > > > documentation that makes it clear (from the Qpid point of view) what > > > I need to add to the code. If so, pointers to where to look would be > helpful. > > > > You wouldn't necessarily need to add anything to Qpid - my > > understanding is that it's more of a Windows scripting/integration > > issue and not so much a Qpid coding issue. You can check this book: > > http://qpid.apache.org/releases/qpid-0.22/cpp-broker/book/chapter-ha.h > > tml Section 1.11.10 has the info to get you going. > > > &g
RE: Queue mirroring with message grouping and clustering on Windows
For what I'm trying to do, is using HA Queue replication between standalone (NOT clustered) nodes a viable option (one that will give me the high availability/reliability, load balancing, message grouping, and failover)? Or is the clustering required for the message grouping feature to work? At http://qpid.apache.org/releases/qpid-0.22/cpp-broker/book/ha-queue-replication.html it states "When the replica queue is on the active node of a cluster, there is no automatic failover. Automatic failover will be supported in the future, in the meantime you can use the workaround detailed in Section 1.11.12, "Failover of federation links and queue replication."." But it doesn't say anything about failover for queues on unclustered nodes -- is that automatic or is the same (or some other) workaround required? > > > From: Steve Huston [mailto:shus...@riverace.com] > > > > I'm considering a Qpid.22 implementation under MS Windows for > > > > message queueing. In the future we might go to a mixed > > > > environment with both Windows and Linux computers. > > > > For fault tolerance, I want the queues to be mirrored across 2 to > > > > 3 computers which are connected by high speed LAN. Each queue will > > > > have multiple consumers on different computers (including some NOT > > > > hosting the queue), so I also need to use the message grouping > > > > feature to ensure that messages from a single source are not > > > > processed > > out of order. > > > > > > Ok. > > > > > > > 1) Is clustering required to do this (on RabbitMQ it is, but RabbitMQ > > appears > > > > to not support message grouping yet)? > > > > > > For mirroring across a set of nodes for FT, yes. > > > > > > > 2) What is required to use clustering on Windows (and is it even > > available)? > > > > So far I've read that Corosync is required for clustering and in > > > > another place (a few years old) I read that Corosync isn't ported > > > > to/doesn't build on Windows. > > > > > > The new HA module in Qpid requires integration with a resource > > > manager; on Linux this is rgmanager (corosync is involved to manage > > > the cluster itself, but it's not directly involved with Qpid). > > > Currently there is no integration with a resource manager on Windows > > > clusters. It's probably not a gigantic amount of work to get it > > > there, but it's > > work that is needed. > > > > If there is a mix of linux and windows computers hosting the queues, > > do they need to use the same (or a compatible) resource manager? > > Yes, the brokers participating in the cluster do need to use the same > resource manager. > > > As a way of getting around the need for a resource manager on Windows, > > if I made a cluster of linux machines (or linux VMs running under > > Windows) to host the mirrored queues would it then be ok/supported to > > have windows clients (NOT part of the cluster) to write to and read from > > the queues? > > Absolutely. > > > If I wanted to try to do the windows resource manager implemtentation > > (assuming my boss would allow it, and given that I have zero > > experience developing within Qpid), is there existing documentation > > that makes it clear (from the Qpid point of view) what I need to add > > to the code. If so, pointers to where to look would be helpful. > > You wouldn't necessarily need to add anything to Qpid - my understanding is > that it's > more of a Windows scripting/integration issue and not so much a Qpid coding > issue. You > can check this book: > http://qpid.apache.org/releases/qpid-0.22/cpp-broker/book/chapter-ha.html > Section 1.11.10 has the info to get you going. > > > BTW, while the queues have to be HA/fault tolerant, I'm expecting that > > most of them DON'T need the messages to be persistent because the > > messages also have a timeliness aspect to them. So if all the hosting > > nodes go down at the same time, it may not make sense to be able to > > recover the messages if it takes more than a few minutes for one of them to > > come > back up. > > That's going to make your life much easier. > > -Steve - To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional commands, e-mail: users-h...@qpid.apache.org
RE: Queue mirroring with message grouping and clustering on Windows
> -Original Message- > From: Rothkin, Steve (NY81) [mailto:steve.roth...@honeywell.com] > Sent: Tuesday, July 16, 2013 11:37 AM > To: users@qpid.apache.org > Subject: RE: Queue mirroring with message grouping and clustering on > Windows > > > To fill in a little more about "clients can connect to any of the > > brokers", in the active- passive mode, clients connect to a virtual > > IP address that gets moved around to the current primary broker (this > > is one of the things driven by the resource manager). If the primary > > crashes (or its node goes down, etc.) the virtual IP would be moved > > to wherever the newly chosen primary is - clients would need to > reconnect, but always to the same IP. > > But I wouldn't be able to spread the load by having some clients connect to a > different node. All of the nodes in the cluster would have to be individually > sized to be capable of handling the maximum traffic. Right. You can use federation to spread the load. A federated set of clusters gives fault tolerance and the ability to spread the load/scale. -Steve - To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional commands, e-mail: users-h...@qpid.apache.org
RE: Queue mirroring with message grouping and clustering on Windows
> To fill in a little more about "clients can connect to any of the brokers", > in the active- > passive mode, clients connect to a virtual IP address that gets moved around > to the > current primary broker (this is one of the things driven by the resource > manager). If the > primary crashes (or its node goes down, etc.) the virtual IP would be moved > to > wherever the newly chosen primary is - clients would need to reconnect, but > always to > the same IP. But I wouldn't be able to spread the load by having some clients connect to a different node. All of the nodes in the cluster would have to be individually sized to be capable of handling the maximum traffic. - To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional commands, e-mail: users-h...@qpid.apache.org
RE: Queue mirroring with message grouping and clustering on Windows
To fill in a little more about "clients can connect to any of the brokers", in the active-passive mode, clients connect to a virtual IP address that gets moved around to the current primary broker (this is one of the things driven by the resource manager). If the primary crashes (or its node goes down, etc.) the virtual IP would be moved to wherever the newly chosen primary is - clients would need to reconnect, but always to the same IP. > -Original Message- > From: Rothkin, Steve (NY81) [mailto:steve.roth...@honeywell.com] > Sent: Tuesday, July 16, 2013 11:25 AM > To: users@qpid.apache.org > Subject: RE: Queue mirroring with message grouping and clustering on > Windows > > The section you mention below is for Active-Passive. I don't see anything > about Active-Active (clients can connect to any of the brokers) -- I thought I > saw that somewhere in the Qpid documentation, but its not in the manual > you linked to below. Is Active-Active not available? > > > -Original Message- > > > > From: Steve Huston [mailto:shus...@riverace.com] > > > > > I'm considering a Qpid.22 implementation under MS Windows for > > > > > message queueing. In the future we might go to a mixed > > > > > environment with both Windows and Linux computers. > > > > > For fault tolerance, I want the queues to be mirrored across 2 > > > > > to > > > > > 3 computers which are connected by high speed LAN. Each queue > > > > > will have multiple consumers on different computers (including > > > > > some NOT hosting the queue), so I also need to use the message > > > > > grouping feature to ensure that messages from a single source > > > > > are not processed > > > out of order. > > > > > > > > Ok. > > > > > > > > > 1) Is clustering required to do this (on RabbitMQ it is, but > > > > > RabbitMQ > > > appears > > > > > to not support message grouping yet)? > > > > > > > > For mirroring across a set of nodes for FT, yes. > > > > > > > > > 2) What is required to use clustering on Windows (and is it even > > > available)? > > > > > So far I've read that Corosync is required for clustering and in > > > > > another place (a few years old) I read that Corosync isn't > > > > > ported to/doesn't build on Windows. > > > > > > > > The new HA module in Qpid requires integration with a resource > > > > manager; on Linux this is rgmanager (corosync is involved to > > > > manage the cluster itself, but it's not directly involved with Qpid). > > > > Currently there is no integration with a resource manager on > > > > Windows clusters. It's probably not a gigantic amount of work to > > > > get it there, but it's > > > work that is needed. > > > > > > If there is a mix of linux and windows computers hosting the queues, > > > do they need to use the same (or a compatible) resource manager? > > > > Yes, the brokers participating in the cluster do need to use the same > resource manager. > > > > > As a way of getting around the need for a resource manager on > > > Windows, if I made a cluster of linux machines (or linux VMs running > > > under > > > Windows) to host the mirrored queues would it then be ok/supported > > > to have windows clients (NOT part of the cluster) to write to and read > from the queues? > > > > Absolutely. > > > > > If I wanted to try to do the windows resource manager > > > implemtentation (assuming my boss would allow it, and given that I > > > have zero experience developing within Qpid), is there existing > > > documentation that makes it clear (from the Qpid point of view) what > > > I need to add to the code. If so, pointers to where to look would be > helpful. > > > > You wouldn't necessarily need to add anything to Qpid - my > > understanding is that it's more of a Windows scripting/integration > > issue and not so much a Qpid coding issue. You can check this book: > > http://qpid.apache.org/releases/qpid-0.22/cpp-broker/book/chapter-ha.h > > tml Section 1.11.10 has the info to get you going. > > > > > - > To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional > commands, e-mail: users-h...@qpid.apache.org - To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional commands, e-mail: users-h...@qpid.apache.org
RE: Queue mirroring with message grouping and clustering on Windows
Right, active-active is not available from 0.22 on. There's more info at qpid/cpp/README-HA.txt > -Original Message- > From: Rothkin, Steve (NY81) [mailto:steve.roth...@honeywell.com] > Sent: Tuesday, July 16, 2013 11:25 AM > To: users@qpid.apache.org > Subject: RE: Queue mirroring with message grouping and clustering on > Windows > > The section you mention below is for Active-Passive. I don't see anything > about Active-Active (clients can connect to any of the brokers) -- I thought I > saw that somewhere in the Qpid documentation, but its not in the manual > you linked to below. Is Active-Active not available? > > > -Original Message- > > > > From: Steve Huston [mailto:shus...@riverace.com] > > > > > I'm considering a Qpid.22 implementation under MS Windows for > > > > > message queueing. In the future we might go to a mixed > > > > > environment with both Windows and Linux computers. > > > > > For fault tolerance, I want the queues to be mirrored across 2 > > > > > to > > > > > 3 computers which are connected by high speed LAN. Each queue > > > > > will have multiple consumers on different computers (including > > > > > some NOT hosting the queue), so I also need to use the message > > > > > grouping feature to ensure that messages from a single source > > > > > are not processed > > > out of order. > > > > > > > > Ok. > > > > > > > > > 1) Is clustering required to do this (on RabbitMQ it is, but > > > > > RabbitMQ > > > appears > > > > > to not support message grouping yet)? > > > > > > > > For mirroring across a set of nodes for FT, yes. > > > > > > > > > 2) What is required to use clustering on Windows (and is it even > > > available)? > > > > > So far I've read that Corosync is required for clustering and in > > > > > another place (a few years old) I read that Corosync isn't > > > > > ported to/doesn't build on Windows. > > > > > > > > The new HA module in Qpid requires integration with a resource > > > > manager; on Linux this is rgmanager (corosync is involved to > > > > manage the cluster itself, but it's not directly involved with Qpid). > > > > Currently there is no integration with a resource manager on > > > > Windows clusters. It's probably not a gigantic amount of work to > > > > get it there, but it's > > > work that is needed. > > > > > > If there is a mix of linux and windows computers hosting the queues, > > > do they need to use the same (or a compatible) resource manager? > > > > Yes, the brokers participating in the cluster do need to use the same > resource manager. > > > > > As a way of getting around the need for a resource manager on > > > Windows, if I made a cluster of linux machines (or linux VMs running > > > under > > > Windows) to host the mirrored queues would it then be ok/supported > > > to have windows clients (NOT part of the cluster) to write to and read > from the queues? > > > > Absolutely. > > > > > If I wanted to try to do the windows resource manager > > > implemtentation (assuming my boss would allow it, and given that I > > > have zero experience developing within Qpid), is there existing > > > documentation that makes it clear (from the Qpid point of view) what > > > I need to add to the code. If so, pointers to where to look would be > helpful. > > > > You wouldn't necessarily need to add anything to Qpid - my > > understanding is that it's more of a Windows scripting/integration > > issue and not so much a Qpid coding issue. You can check this book: > > http://qpid.apache.org/releases/qpid-0.22/cpp-broker/book/chapter-ha.h > > tml Section 1.11.10 has the info to get you going. > > > > > - > To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional > commands, e-mail: users-h...@qpid.apache.org - To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional commands, e-mail: users-h...@qpid.apache.org
RE: Queue mirroring with message grouping and clustering on Windows
The section you mention below is for Active-Passive. I don't see anything about Active-Active (clients can connect to any of the brokers) -- I thought I saw that somewhere in the Qpid documentation, but its not in the manual you linked to below. Is Active-Active not available? > -Original Message- > > > From: Steve Huston [mailto:shus...@riverace.com] > > > > I'm considering a Qpid.22 implementation under MS Windows for > > > > message queueing. In the future we might go to a mixed > > > > environment with both Windows and Linux computers. > > > > For fault tolerance, I want the queues to be mirrored across 2 to > > > > 3 computers which are connected by high speed LAN. Each queue will > > > > have multiple consumers on different computers (including some NOT > > > > hosting the queue), so I also need to use the message grouping > > > > feature to ensure that messages from a single source are not > > > > processed > > out of order. > > > > > > Ok. > > > > > > > 1) Is clustering required to do this (on RabbitMQ it is, but RabbitMQ > > appears > > > > to not support message grouping yet)? > > > > > > For mirroring across a set of nodes for FT, yes. > > > > > > > 2) What is required to use clustering on Windows (and is it even > > available)? > > > > So far I've read that Corosync is required for clustering and in > > > > another place (a few years old) I read that Corosync isn't ported > > > > to/doesn't build on Windows. > > > > > > The new HA module in Qpid requires integration with a resource > > > manager; on Linux this is rgmanager (corosync is involved to manage > > > the cluster itself, but it's not directly involved with Qpid). > > > Currently there is no integration with a resource manager on Windows > > > clusters. It's probably not a gigantic amount of work to get it > > > there, but it's > > work that is needed. > > > > If there is a mix of linux and windows computers hosting the queues, > > do they need to use the same (or a compatible) resource manager? > > Yes, the brokers participating in the cluster do need to use the same > resource manager. > > > As a way of getting around the need for a resource manager on Windows, > > if I made a cluster of linux machines (or linux VMs running under > > Windows) to host the mirrored queues would it then be ok/supported to > > have windows clients (NOT part of the cluster) to write to and read from > > the queues? > > Absolutely. > > > If I wanted to try to do the windows resource manager implemtentation > > (assuming my boss would allow it, and given that I have zero > > experience developing within Qpid), is there existing documentation > > that makes it clear (from the Qpid point of view) what I need to add > > to the code. If so, pointers to where to look would be helpful. > > You wouldn't necessarily need to add anything to Qpid - my understanding is > that it's > more of a Windows scripting/integration issue and not so much a Qpid coding > issue. You > can check this book: > http://qpid.apache.org/releases/qpid-0.22/cpp-broker/book/chapter-ha.html > Section 1.11.10 has the info to get you going. > - To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional commands, e-mail: users-h...@qpid.apache.org
RE: Queue mirroring with message grouping and clustering on Windows
> -Original Message- > From: Rothkin, Steve (NY81) [mailto:steve.roth...@honeywell.com] > Sent: Tuesday, July 16, 2013 10:44 AM > To: users@qpid.apache.org > Subject: RE: Queue mirroring with message grouping and clustering on > Windows > > > From: Steve Huston [mailto:shus...@riverace.com] > > > I'm considering a Qpid.22 implementation under MS Windows for > > > message queueing. In the future we might go to a mixed environment > > > with both Windows and Linux computers. > > > For fault tolerance, I want the queues to be mirrored across 2 to 3 > > > computers which are connected by high speed LAN. Each queue will > > > have multiple consumers on different computers (including some NOT > > > hosting the queue), so I also need to use the message grouping > > > feature to ensure that messages from a single source are not processed > out of order. > > > > Ok. > > > > > 1) Is clustering required to do this (on RabbitMQ it is, but RabbitMQ > appears > > > to not support message grouping yet)? > > > > For mirroring across a set of nodes for FT, yes. > > > > > 2) What is required to use clustering on Windows (and is it even > available)? > > > So far I've read that Corosync is required for clustering and in > > > another place (a few years old) I read that Corosync isn't ported > > > to/doesn't build on Windows. > > > > The new HA module in Qpid requires integration with a resource > > manager; on Linux this is rgmanager (corosync is involved to manage > > the cluster itself, but it's not directly involved with Qpid). > > Currently there is no integration with a resource manager on Windows > > clusters. It's probably not a gigantic amount of work to get it there, but > > it's > work that is needed. > > If there is a mix of linux and windows computers hosting the queues, do they > need to use the same (or a compatible) resource manager? Yes, the brokers participating in the cluster do need to use the same resource manager. > As a way of getting around the need for a resource manager on Windows, if I > made a cluster of linux machines (or linux VMs running under Windows) to > host the mirrored queues would it then be ok/supported to have windows > clients (NOT part of the cluster) to write to and read from the queues? Absolutely. > If I wanted to try to do the windows resource manager implemtentation > (assuming my boss would allow it, and given that I have zero experience > developing within Qpid), is there existing documentation that makes it clear > (from the Qpid point of view) what I need to add to the code. If so, pointers > to where to look would be helpful. You wouldn't necessarily need to add anything to Qpid - my understanding is that it's more of a Windows scripting/integration issue and not so much a Qpid coding issue. You can check this book: http://qpid.apache.org/releases/qpid-0.22/cpp-broker/book/chapter-ha.html Section 1.11.10 has the info to get you going. > BTW, while the queues have to be HA/fault tolerant, I'm expecting that most > of them DON'T need the messages to be persistent because the messages > also have a timeliness aspect to them. So if all the hosting nodes go down at > the same time, it may not make sense to be able to recover the messages if > it takes more than a few minutes for one of them to come back up. That's going to make your life much easier. -Steve - To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional commands, e-mail: users-h...@qpid.apache.org
RE: Queue mirroring with message grouping and clustering on Windows
> From: Steve Huston [mailto:shus...@riverace.com] > > I'm considering a Qpid.22 implementation under MS Windows for message > > queueing. In the future we might go to a mixed environment with both > > Windows and Linux computers. > > For fault tolerance, I want the queues to be mirrored across 2 to 3 > > computers which are connected by high speed LAN. Each queue will have > > multiple consumers on different computers (including some NOT hosting > > the queue), so I also need to use the message grouping feature to > > ensure that messages from a single source are not processed out of order. > > Ok. > > > 1) Is clustering required to do this (on RabbitMQ it is, but RabbitMQ > > appears > > to not support message grouping yet)? > > For mirroring across a set of nodes for FT, yes. > > > 2) What is required to use clustering on Windows (and is it even > > available)? > > So far I've read that Corosync is required for clustering and in > > another place (a few years old) I read that Corosync isn't ported > > to/doesn't build on Windows. > > The new HA module in Qpid requires integration with a resource manager; on > Linux this > is rgmanager (corosync is involved to manage the cluster itself, but it's not > directly > involved with Qpid). Currently there is no integration with a resource > manager on > Windows clusters. It's probably not a gigantic amount of work to get it > there, but it's > work that is needed. If there is a mix of linux and windows computers hosting the queues, do they need to use the same (or a compatible) resource manager? As a way of getting around the need for a resource manager on Windows, if I made a cluster of linux machines (or linux VMs running under Windows) to host the mirrored queues would it then be ok/supported to have windows clients (NOT part of the cluster) to write to and read from the queues? If I wanted to try to do the windows resource manager implemtentation (assuming my boss would allow it, and given that I have zero experience developing within Qpid), is there existing documentation that makes it clear (from the Qpid point of view) what I need to add to the code. If so, pointers to where to look would be helpful. BTW, while the queues have to be HA/fault tolerant, I'm expecting that most of them DON'T need the messages to be persistent because the messages also have a timeliness aspect to them. So if all the hosting nodes go down at the same time, it may not make sense to be able to recover the messages if it takes more than a few minutes for one of them to come back up. Thanks - To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional commands, e-mail: users-h...@qpid.apache.org
RE: Queue mirroring with message grouping and clustering on Windows
Hi Steve, > -Original Message- > From: Rothkin, Steve (NY81) [mailto:steve.roth...@honeywell.com] > Sent: Tuesday, July 16, 2013 9:37 AM > To: users@qpid.apache.org > Subject: Queue mirroring with message grouping and clustering on Windows > > I'm considering a Qpid.22 implementation under MS Windows for message > queueing. In the future we might go to a mixed environment with both > Windows and Linux computers. > For fault tolerance, I want the queues to be mirrored across 2 to 3 computers > which are connected by high speed LAN. Each queue will have multiple > consumers on different computers (including some NOT hosting the queue), > so I also need to use the message grouping feature to ensure that messages > from a single source are not processed out of order. Ok. > 1) Is clustering required to do this (on RabbitMQ it is, but RabbitMQ > appears > to not support message grouping yet)? For mirroring across a set of nodes for FT, yes. > 2) What is required to use clustering on Windows (and is it even available)? > So far I've read that Corosync is required for clustering and in another place > (a few years old) I read that Corosync isn't ported to/doesn't build on > Windows. The new HA module in Qpid requires integration with a resource manager; on Linux this is rgmanager (corosync is involved to manage the cluster itself, but it's not directly involved with Qpid). Currently there is no integration with a resource manager on Windows clusters. It's probably not a gigantic amount of work to get it there, but it's work that is needed. -Steve Huston - To unsubscribe, e-mail: users-unsubscr...@qpid.apache.org For additional commands, e-mail: users-h...@qpid.apache.org
