5.601 Initializing/Configuring Torque on the Server (pbs_server)

The Torque server (pbs_server) contains all the information about a cluster. It knows about all of the MOM nodes in the cluster based on the information in the TORQUE_HOME/server_priv/nodes file (See Configuring Torque on Compute Nodes). It also maintains the status of each MOM node through updates from the MOMs in the cluster (see pbsnodes). All jobs are submitted via qsub to the server, which maintains a master database of all jobs and their states.

Schedulers such as Moab Workload Manager receive job, queue, and node information from pbs_server and submit all jobs to be run to pbs_server.

The server configuration is maintained in a file named serverdb, located in TORQUE_HOME/server_priv. The serverdb file contains all parameters pertaining to the operation of Torque plus all of the queues which are in the configuration. For pbs_server to run, serverdb must be initialized.

You can initialize serverdb in two different ways, but the recommended way is to use the ./torque.setup script:

As root, execute ./torque.setup from the build directory (see ./torque.setup).
Use pbs_server -t create (see Initializing/Configuring Torque on the Server (pbs_server)).

Restart pbs_server after initializing serverdb.

Red Hat 6-based or SUSE 11-based systems
```
> qterm
> service pbs_server start
```

Red Hat 7-based or SUSE 12-based systems

> qterm
> systemctl start pbs_server.service

5.601.1 ./torque.setup

The torque.setup script uses pbs_server -t create to initialize serverdb and then adds a user as a manager and operator of Torque and other commonly used attributes. The syntax is as follows:

/torque.setup username

> ./torque.setup ken

> qmgr -c 'p s'

# Create queues and set their attributes.

# Create and define queue batch

create queue batch
set queue batch queue_type = Execution

set queue batch resources_default.nodes = 1

set queue batch resources_default.walltime = 01:00:00

set queue batch enabled = True

set queue batch started = True

# Set server attributes.

set server scheduling = True

set server acl_hosts = kmn

set server managers = ken@kmn

set server operators = ken@kmn

set server default_queue = batch

set server log_events = 511

set server mail_from = adm

set server node_check_rate = 150

set server tcp_timeout = 6

set server mom_job_sync = True

set server keep_completed = 300

5.601.2 pbs_server -t create

The -t create option instructs pbs_server to create the serverdb file and initialize it with a minimum configuration to run pbs_server.

> pbs_server -t create

To see the configuration and verify that Torque is configured correctly, use qmgr: