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Using the WLBS CLI tool to Control Network Load Balancing on Windows 2000 Advanced Server
Topic: Networking Posted:2003-05-09
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In order to use the WLBS CLI, you need to enable remote control:
The WLBS CLI lives as wlbs.exe in system32.
Query the cluster:
C:\>wlbs query 10.50.100.10 /passw
WLBS Cluster Control Utility V2.3. (c) 1997-99 Microsoft Corporation
Password:
Accessing cluster '10.50.100.10' (10.50.100.40):
Host 7 (10.50.100.17) reported: converged
Host 1 (10.50.100.11) reported: converged as DEFAULT
Host 3 (10.50.100.13) reported: converged
Host 6 (10.50.100.16) reported: converged
Host 4 (10.50.100.14) reported: converged
Host 5 (10.50.100.15) reported: converged
Host 2 (10.50.100.12) reported: converged
C:\>
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Stop host .16:
C:\>wlbs stop 10.50.100.10:10.50.100.16 /passw
WLBS Cluster Control Utility V2.3. (c) 1997-99 Microsoft Corporation
Password:
Accessing cluster '10.50.100.10' (10.50.100.40):
Host 6 (10.50.100.16) reported:
Cluster operations stopped.
C:\>
C:\>wlbs query 10.50.100.10 /passw
WLBS Cluster Control Utility V2.3. (c) 1997-99 Microsoft Corporation
Password:
Accessing cluster '10.50.100.10' (10.50.100.40):
Host 6 (10.50.100.16) reported: stopped
Host 2 (10.50.100.12) reported: converged
Host 4 (10.50.100.14) reported: converged
Host 1 (10.50.100.11) reported: converged as DEFAULT
Host 7 (10.50.100.17) reported: converged
Host 3 (10.50.100.13) reported: converged
Host 5 (10.50.100.15) reported: converged
C:\>
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One really cool option is drainstop. This option will disable new connections to the host. If you need to schedule maintenance, use drainstop on that host, and when users log off, they won't be able to get back on, yet it won't interrupt the existing connections.
C:\>wlbs drainstop 10.50.100.10:10.50.100.15 /passw
WLBS Cluster Control Utility V2.3. (c) 1997-99 Microsoft Corporation
Password:
Accessing cluster '10.50.100.10' (10.50.100.40):
Host 5 (10.50.100.15) reported:
Connection draining started.
C:\>
C:\>wlbs query 10.50.100.10 /passw
WLBS Cluster Control Utility V2.3. (c) 1997-99 Microsoft Corporation
Password:
Accessing cluster '10.50.100.10' (10.50.100.40):
Host 5 (10.50.100.15) reported: draining
Host 6 (10.50.100.16) reported: stopped
Host 3 (10.50.100.13) reported: converged
Host 1 (10.50.100.11) reported: converged as DEFAULT
Host 4 (10.50.100.14) reported: converged
Host 7 (10.50.100.17) reported: converged
Host 2 (10.50.100.12) reported: converged
C:\>
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Stop the host from being part of the cluster with the stop option:
C:\>wlbs stop 10.50.100.10:10.50.100.11 /passw
WLBS Cluster Control Utility V2.3. (c) 1997-99 Microsoft Corporation
Password:
Accessing cluster '10.50.100.10' (10.50.100.40):
Host 1 (10.50.100.11) reported:
Cluster operations stopped.
C:\>
C:\>wlbs query 10.50.100.10 /passw
WLBS Cluster Control Utility V2.3. (c) 1997-99 Microsoft Corporation
Password:
Accessing cluster '10.50.100.10' (10.50.100.40):
Host 3 (10.50.100.13) reported: stopped
Host 1 (10.50.100.11) reported: stopped
Host 6 (10.50.100.16) reported: stopped
Host 2 (10.50.100.12) reported: draining
Host 5 (10.50.100.15) reported: stopped
Host 4 (10.50.100.14) reported: converged as DEFAULT
Host 7 (10.50.100.17) reported: stopped
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Start the host with, well... drumroll... start:
C:\>wlbs start 10.50.100.10:10.50.100.12 /passw
WLBS Cluster Control Utility V2.3. (c) 1997-99 Microsoft Corporation
Password:
Accessing cluster '10.50.100.10' (10.50.100.40):
Host 2 (10.50.100.12) reported:
Connection draining suspended.
Cluster operations started.
C:\>
C:\>wlbs query 10.50.100.10 /passw
WLBS Cluster Control Utility V2.3. (c) 1997-99 Microsoft Corporation
Password:
Accessing cluster '10.50.100.10' (10.50.100.40):
Host 5 (10.50.100.15) reported: converged
Host 1 (10.50.100.11) reported: converged as DEFAULT
Host 3 (10.50.100.13) reported: converged
Host 6 (10.50.100.16) reported: converged
Host 2 (10.50.100.12) reported: converged
Host 7 (10.50.100.17) reported: converged
Host 4 (10.50.100.14) reported: converged
C:\>
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For other options, use wlbs /help | more.
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