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PHP $_SERVER[‘SERVER_ADDR’] variable always returns 127.0.0.1

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问题 We have multiple load-balanced webserver machines running the same PHP webapp (LAMP) and I'd like to run slightly different code on each server ( for testing purposes ). I was hoping to use the $_SERVER['SERVER_ADDR'] super global to do something like this: if ($_SERVER['SERVER_ADDR'] == 'XXX.XXX.XXX.XXX') { echo "Do one thing"; } elseif ($_SERVER['SERVER_ADDR'] == 'YYY.YYY.YYY.YYY') { echo "Do something else"; } Unfortunately, this doesn't work because both machines are setting $_SERVER[

What to use instead of the “lock” statement when the code is running on multiple machines?

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问题 The lock statement ensures that one thread does not enter a critical section of code while another thread is in the critical section. However, it won't work if the workload is spread across a farm of servers (e.g. a few IIS servers + a load balancer). Does .NET support such a scenario? Is there any class that can be used to control the execution of a critical code section by threads running on multiple machines? If not, is there any standard method of handling such problems? This question was

SSRS 2008 R2, Farm - Load Balanced and HTTP status 401: Unauthorized

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问题 I have SQL Server Reporting services 2008 R2 environment in my Company. 2 servers Windows 2008 R2: PRERPSW01 and PRERPSW02 , in domain DOMAIN_Company NLB name: PRERPS IPs address ( I get by ping command): PRERPSW01 192.168.110.41 prerps 192.168.90.92 hosts file in PRERPSW01 server 192.168.110.41 prerps In PRERPSW01 and PRERPSW02 servers, there is this configuration: Config Report Server: C:\Program Files\Microsoft SQL Server\MSRS10_50.REPORTING\Reporting Services\ReportServer\rsreportserver

SSRS 2008 R2, Farm - Load Balanced and HTTP status 401: Unauthorized

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I have SQL Server Reporting services 2008 R2 environment in my Company. 2 servers Windows 2008 R2: PRERPSW01 and PRERPSW02 , in domain DOMAIN_Company NLB name: PRERPS IPs address ( I get by ping command): PRERPSW01 192.168.110.41 prerps 192.168.90.92 hosts file in PRERPSW01 server 192.168.110.41 prerps In PRERPSW01 and PRERPSW02 servers, there is this configuration: Config Report Server: C:\Program Files\Microsoft SQL Server\MSRS10_50.REPORTING\Reporting Services\ReportServer\rsreportserver.config HostName: PRERPS. UrlRoot: http://PRERPS/ReportServer In PRERPSW01 , I use credentials PRERPSW01

What to use instead of the “lock” statement when the code is running on multiple machines?

阅读更多关于 What to use instead of the “lock” statement when the code is running on multiple machines?

The lock statement ensures that one thread does not enter a critical section of code while another thread is in the critical section. However, it won't work if the workload is spread across a farm of servers (e.g. a few IIS servers + a load balancer). Does .NET support such a scenario? Is there any class that can be used to control the execution of a critical code section by threads running on multiple machines? If not, is there any standard method of handling such problems? This question was inspired by a discussion that started here but is not limited to SharePoint or ASP.NET. Kit If you