Web - User contributions [en]

Unimore PLE/Docs/Tools/Multiquery

2009-11-02T13:29:38Z

44736:

<accesscontrol>luser</accesscontrol>

Multiquery syntax is quite simple, just issuing

multiquery 'command1; command2; command3 &'

will execute command1, command2 and, in the background, command3 (thanks to the '&' parameter).
 Another example, if you want to create a directory called "test" on the remote nodes, issue

multiquery 'mkdir test'

Or, if you need to kill a process that you started remotely on all the nodes, you can try

multiquery 'pkill processName'

work in progress

Unimore PLE/Docs/Tools/CoDeploy

2009-11-02T13:28:20Z

44736:

<accesscontrol>luser</accesscontrol>

CoDeploy needs an HTTP server, such as Apache2, running on the local host containing the software to be deployed. So, if you are behind a firewall, you need to have the port 80 of the local host "open" so that remote machines can access contents by mean of an HTTP connection, as if they are downloading a file from a Web site.

You have to setup the HTTP server so that, when you give an URL pointing to a directory on your local host, then this can be find by remote nodes. On Ubuntu, you have to modify the file /etc/apache2/sites-available/default so that the "DocumentRoot" parameter, which by default is /var/www/, points e.g. to your PlanetLab directory.
 So, if you have: DocumentRoot /var/www/
 then replace with DocumentRoot /home/yourUserName/choosenFolder/
 This should work just fine if your Linux box is being used by a single user. After that, you should be able to view a sample index.html file, that you save into "choosenFolder", with a Web browser by connecting to the IP of your local host. Be sure that you can view it when connecting from outside your LAN: if you can't, then the firewall is blocking your port 80.

The syntax of the CoDeploy command is something like this: codeploy -a localDirectory http://localHostIP_orName/localDirectory/ remoteDirectory.
 With -a you specify you want to send compressed data, useful if deploying large files for the first time; localDirectory is the directory containing the files you want to be deployed and MUST be inside the "choosenFolder" with which you configured the DocumentRoot; the URL is where remote nodes will find the files and remoteDirectory is the remote directory where the files will be copied. Before issuing the command, you can check if the files are in the correct folder by opening with a Web browser the page http://localHostIP_orName/localDirectory/, it should display the list of files that you want to transfer.

CoDeploy then generates a script that is copied to the remote nodes and then executed, for downloading the files from hosts of a CDN ([http://codeen.cs.princeton.edu/ CoDeen]) or from the local host. It seems to be a quite slow method compared to MultiCopy, but maybe it depends on the volume of data to be transferred.

work in progress

Unimore PLE/Docs/Tools/CoDeploy

2009-11-02T11:29:34Z

44736:

Unimore PLE/Docs/Tools/CoDeploy

2009-11-02T11:28:42Z

44736:

Unimore PLE/Docs/Tools/Multicopy

2009-11-02T10:24:52Z

44736:

<accesscontrol>luser</accesscontrol>

This program makes use of a parameter, @, which has different meanings depending on how it is written:
* if alone, it is replaced by a machine (remote node) name, e.g. planetlab-1.remoteDomain;
* if followed by a colon, that is @:, it is replaced by slice name at the remote nodes, e.g. yourSliceName@planetlab-1.remoteDomain.

So, if you want to transfer a local file to remote nodes in a particular directory, e.g. test, you run

multicopy filename @:test

and MultiCopy will start scp with proper parameters for copying the file to the nodes specified in the node list.
 If you want, instead, to copy files from remote nodes to the local host, you can create local directories using remote node names and then copy the files you need into their folders, using this syntax on the local host:

mkdir newdir
 multicopy newdir @
 multicopy '@:test/*.log' @

In this way, you create a directory called "newdir" on the local host, then you make copies of it using the remote machine names (thanks to @ parameter). After that, you copy the log files from the remote directory "test" from each remote node into the local directories corresponding to the remote node name.

work in progress

Unimore PLE/Docs/Tools/Multicopy

2009-11-02T10:18:12Z

44736:

<accesscontrol>luser</accesscontrol>

This program makes use of a parameter, @, which has different meanings depending on how it is written:
 - if alone, it is replaced by a machine (remote node) name, e.g. planetlab-1.remoteDomain;
 - if followed by a colon, that is @:, it is replaced by slice name at the remote nodes, e.g. yourSliceName@planetlab-1.remoteDomain.

So, if you want to transfer a local file to remote nodes in a particular directory, e.g. test, you run

multicopy filename @:test

and MultiCopy will start scp with proper parameters for copying the file to the nodes specified in the node list.
 If you want, instead, to copy files from remote nodes to the local host, you can create local directories using remote node names and then copy the files you need into their folders, using this syntax on the local host:

mkdir newdir
 multicopy newdir @
 multicopy '@:test/*.log' @

In this way, you create a directory called "newdir" on the local host, then you make copies of it using the remote machine names (thanks to @ parameter). After that, you copy the log files from the remote directory "test" from each remote node into the local directories corresponding to the remote node name.

work in progress

Unimore PLE/Docs/Tools/Multicopy

2009-11-02T10:17:23Z

44736:

<accesscontrol>luser</accesscontrol>

This program makes use of a parameter, @, which has different meanings depending on how it is written:
 - if alone, it is replaced by a machine (remote node) name, e.g. planetlab-1.remoteDomain;
 - if followed by a colon, that is @:, it is replaced by slice name at the remote nodes, e.g. yourSliceName@planetlab-1.remoteDomain.

So, if you want to transfer a local file to remote nodes in a particular directory, e.g. test, you run

multicopy filename @:test

and MultiCopy will start scp with proper parameters for copying the file to the nodes specified in the node list.
 If you want, instead, to copy files from remote nodes to the local host, you can create local directories using remote node names and then copy the files you need into their folders, using this syntax on the local host:

mkdir newdir
 multicopy newdir @
 multicopy '@:test/*.log' @

In this way, you create a directory called "newdir" on the local host, then you make copies of it using the remote machine names (thanks to @ parameter). After that, you copy the log files from the remote directory "test" from each remote node into the local directories corresponding to the remote node name.

work in progress

Unimore PLE/Docs/Tools/CoDeploy

2009-11-02T10:08:10Z

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Unimore PLE/Docs/Tools/Multicopy

2009-11-02T09:58:31Z

44736:

Unimore PLE/Docs/Tools/CoDeploy

2009-11-02T09:51:18Z

44736:

<accesscontrol>luser</accesscontrol>

Unimore PLE/Docs/Tools/CoDeploy

2009-11-02T09:48:32Z

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Unimore PLE/Docs/Tools/CoDeploy

2009-11-02T09:37:46Z

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Unimore PLE/Docs/Tools/Multicopy

2009-11-02T09:37:39Z

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Unimore PLE/Docs/Tools/Multiquery

2009-11-02T09:36:50Z

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Unimore PLE/Docs/Tools/Multiquery

2009-11-02T09:23:58Z

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