Apple Mac OS X Server Version 10.4 or Later Manual do Utilizador descarregar pdf (Página 3)

using the admin credentials. In the leftmost part of the window you will see your servers

name with an arrow (well, a triangle) to its left; if this arrow does not point downwards,

then click on it. Now you will see all the services that are, or could be provided by your

server. If you just installed your S10.4 with the above instructions, then Xgrid should

have a green disc next to it, indicating that it is running.

To set up Xgrid, click on Xgrid (highlighting it), then click on settings in the right

pane. Click on “Controller” and make sure that the “enable controller service” box is

checked. Set the client and agent passwords (e.g., client password: cls-client, and agent

password: cls-agent). The agent password is needed for agents to connect to the

controller offering their services, while the client password is needed to submit or

monitor jobs. Click on “Save” and you will be offered to restart the service (which offer

you cannot refuse). Once done, click on “Agent” and make sure that the “enable agent

service” is checked. Select the “use specific controller” option and choose your (already

running) server: mmac-servr00. Select “always” for “agent accepts tasks” (if the primary

purpose of your computers is to be a cluster). Click on “Save” and take the restart offer.

If you click on “Overview” you should see your own server acting as an agent. The easy

part is done.

Xgrid Admin is a graphical tool to monitor your Xgrid; you can find it under

“Applications→Server→Xgrid Admin” (do yourself a favor and drag it out to your

bottom toolbar). When you start it up it will try to connect as a client to your Xgrid, thus

you will need to select your controller “mmac-servr00” and enter the client password that

you have just set (e.g., cls-client). Now you will get a nice meter showing usage of your

cluster or you can check its capabilities. With this tool you can get status info on your

agents, on your jobs, or remove jobs or agents (removing connected agents will not

prevent them to reconnect automatically, for that you will have to stop their offering at

their local settings).

There is one last thing left (that you will need to do on all computers that you will

want to use to submit jobs from), that is to set some environment variables. Here we

assume that you are using bash (the default shell with OSX 10.4). Open a terminal

window, and edit the /etc/profile file in a superuser mode (e.g., by typing:

“

sudo emacs /etc/profile” you can save the file with the sequence: CTRL-X CTRL-

S and exit emacs with a

CTRL-X CTRL-C sequence). You need to add the following two

lines to /etc/profile:

export XGRID_CONTROLLER_HOSTNAME=mmac-servr00.local

export XGRID_CONTROLLER_PASSWORD=cls-client

obviously, with replacing the server name and the password to your own. From now

on when you start a terminal window these variables will all be set and you can easily

submit Xgrid jobs. (Note: 1. you can also put the above environmental variable

definitions in ~/.profile or ~/.bashrc which will only set them for the current user, and 2.

once you are editing /etc/profile, you may want to add “

:/usr/local/bin:.” To your

PATH). Close the terminal window and open a new one (so your new variables are

loaded). Type: “xgrid -grid list”; if your output is not something like: “{gridList =

(0);}” then check that you have entered the above

XGRID_* variables correctly (by editing

the corresponding file again, or by typing: “

set | grep XGRID”). You can now submit

jobs using the command line tool , e.g., “

xgrid –job submit prog_name”.

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