The MonALISA pseudo-client retrieves monitoring data from MonALISA services
that are members of one or more monitoring groups.
The pseudo-client connects to the monitoring services via proxy servers.
There are currently four proxy servers available.
The monitoring data collected by the pseudo-client are cached locally
and are made available to other applications that may have use for
The pseudo-client code runs on Web Repositories, caches the retrieved
data which are then stored in a database. The pseudo-client
was made available to us by the MonALISA developers and we have
deployed it to cache monitoring data from sites of interest
Getting the Pseudo-Client code
The pseudo-client code consists of the server code and the client code.
The server starts a thread that collects the monitoring data from
the various sites and listens for incoming connections to port 9331.
When a connection is established to this port the server spawns another thread
that serves the monitoring data. The client code simply establishes
a connection to the server and gets the latest cached monitoring data. The
hostname of the server and the port number are hardwired in the client
Firewall requirements: outgoing traffic in the range 6000-6003 tcp
to the four proxy servers must
be open in order the server to collect the monitoring data.
The pseudo-client code is available from the BNL CVS Repository.
To get the code, first, You need to set your CVSROOT environment variable,
and then login:
Logging in to :pserver:firstname.lastname@example.org:2401/data01/CVS
The password is the same as the CVS username: cvsuser1. Then, check out
the project MLpseudoclient. This will create a local MLpseudoclient directory
where the pseudo-client code will be located:
cvs co MLpseudoclient
The next thing would be to compile the client and server code. Both
./client and ./server directories have a compile.sh script that
compile the client and server code.
To run the pseudo-client server code, simply go to the ./scripts directory
and run the script ./runMaster.sh. The script ./run_client.sh in the
same directory will run the pseudo-client client code.
Stratos Efstathiadis - page was last modified