Changes between Version 17 and Version 18 of LAMP/Tutorial


Ignore:
Timestamp:
09/21/10 18:04:48 (9 years ago)
Author:
fernande@cis.udel.edu
Comment:

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  • LAMP/Tutorial

    v17 v18  
    301301[[Image(portal-error.png)]]
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    303 We're sorry that right now our error reporting is so uninformative, so the user doesn't really know what happened. Looking at the error log for the web server (/var/log/apache2/error.log) we see the following error message:
     303(We're sorry that right now our error reporting is so uninformative, the user doesn't really know what happened.) Looking at the error log for the web server (/var/log/apache2/error.log) we see the following error message:
    304304
    305305{{{
     
    313313[[Image(portal1.png)]]
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    315 
    316 
     315The first time the LAMP Portal is opened it will query UNIS and retrieve the set of configurable nodes and their current configuration. The home page that we're seeing on the above image is the ''Configuration Status'' page on the left sidebar. Here we can see all the LAMP nodes on our slice and their current services. We also see the date we last fetched the topology information from UNIS and that we haven't modified it.
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     317
     318=== 6. Enabling/Disabling Services ===
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     320At this moment we can see that no I&M services are running on our slice. To remedy this situation we click on the ''Enabled Services'' link under the ''Configuration'' menu on the left sidebar.
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     322[[Image(portal2.png)]]
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     324In this page we see all the services that are available to us. You can read their description for an overview of the functionality they provide, and you can find more information about them on the links on the bottom of the ''Configuration Status'' page. We will have the following setup for I&M on our slice:
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     326* '''node1:''' Runs the Host Monitoring Daemon, all latency services and the NTP server (note that NTP is a prerequisite for using OWAMP and BWCTL).
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     328* '''node2:''' Runs the Host Monitoring Daemon, the bandwidth services and the NTP server.
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     330* '''lamp:''' Runs the LAMP Portal, the Host Monitoring Collector, the Ganglia MA, and NTP server.
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     332We will likely make the NTP server always enabled in the future, since it's usually (always?) desirable. Our flagship visualization service, Periscope, is not included in the RC1 version of the software, but it will hopefully be included soon.
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     334A couple of things to note. Enabling the host monitoring collector will automatically run the host monitoring daemon on the node. The data measured by the host monitoring daemons is only stored by the host monitoring collector. The Ganglia MA is an SNMP MA that wraps the data store of the host monitoring collector and exports it using the perfSONAR API and schemas.
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     336For each node, after selecting the appropriate services we must click the Save button to save the configuration locally.
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     338[[Image(portal3.png)]]
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