Set "FAST_START=1" in the viruoso-start.sh file and then run:

viruoso-start.sh

or

Execute the following line:

# /etc/init.d/virtuoso start
Starting OpenLink Virtuoso:                                [  OK  ]

In order to check the nodes, connect to port 12201 using the ISQL tool:

isql 12201

To check the cluster status, execute the following command:

SQL> status('cluster');
REPORT
VARCHAR
_______________________________________________________________________________

Cluster 4 nodes, 293 s. 0 m/s 0 KB/s  0% cpu 0%  read 0% clw threads 1r 0w 0i buffers 1781 0 d 0 w 0 pfs

1 Rows. -- 4 msec.