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| two app servers and one http server |
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| vennela |
 Posted: Wed Aug 03, 2005 4:44 pm Post subject: two app servers and one http server |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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Let's say I have two (WAS) application servers on two machines.
I want to use one HTTP Server that can talk to two of these app servers.
For this to happen, this is what I think needs to be done.
1. Install WAS on two machines (MachineA and MachineB).
2. Install IHS on another machine (MachineC).
3. Install webserver plugin for IHS on MachineA and MachineB.
4. Now what do I do?
Regenerate the plugin on both MachineA and MachineB and copy the plugins from A and B and put them on C
or
should I merge the plugins. If I have to merge the plugins, how do I do that.
If this can be done and if that is not a trivial task, let me know. |
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| jefflowrey |
| Posted: Thu Aug 04, 2005 3:16 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| vennela |
| Posted: Thu Aug 04, 2005 10:25 am Post subject: |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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| Quote: |
| If the two app servers are under network deployment, then you only need the single plugin-cfg.xml from the ND server, and everything will be handled. |
They are under ND, but they are not under the same cell. From what I read so far, looks like I have to manually merge both of them if they are under different cells.
If you think otherwise let me know. |
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| jefflowrey |
| Posted: Thu Aug 04, 2005 10:29 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| vennela |
| Posted: Thu Aug 04, 2005 11:14 am Post subject: |
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Jedi Knight
Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India
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| Quote: |
| Can you run more than one webserver? |
For now NO
Also, there is no load balancer.
The webserver is IIS.
I am still trying to understand how this cluster thing in WAS works.
Let me tell you the configuration one more time.
Machine1: WAS1, WPS1
Machine2: WAS2, WPS2
Machine3: ND1, ND2
ND1 has a cell(cluster) C1 with cluster members WAS1 and WAS2.
ND2 has a cell(cluster) C2 with cluster members WPS1 and WPS2.
Now I want one IIS to talk to C1 and C2 (the appservers underneath it). |
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| jefflowrey |
| Posted: Thu Aug 04, 2005 11:21 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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You don't need two NDs for this, unless you have different WAS security requirements for WAS vs WPS.
You can have more than one cluster in the same cell.
But it's much easier to merge the plugins than it is to migrate the nodes to a different cell.
If it's IIS, then yeah you probably have to manually merge the plugin-cfgs.
I've only done it once or twice, and that was with help, so I don't remember it very well. But it was fairly straightforward.
The way the cluster thing in WAS works is that at least in part the plugin acts to load balance requests for the same URL between all available servers that handle that url. I think the App Servers also work a bit to do the load balancing as well.
Do you have coexistant WAS instances on Machine1 and 2 - one for WAS alone and one for Portal? Different fix pack/release levels I assume?
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