5.4.4 Host name and alias Although the kickstarter file configured the host name, you must verify that everything is set  up correctly. Verify that the short and long (fully qualified domain name) host names are detected: $ hostname --short xcat-mn $ hostname --long xcat-mn.xcat-cluster Configure the host name to be resolved to the IP address in the management (OS) network  by completing the following steps: Running the  makenetworks  command populates the  networks  table based on the current  configuration of the network interfaces. It is run automatically during the installation of xCAT  packages. The xCAT networks configuration is stored the  networks  table, and is available as objects of  the  network  type.  You can use the following commands to create, list, modify, and remove  network  objects, and  list and edit the  networks  table: To configure the xCAT networks, populate the  networks  table by running the  makenetworks command, remove any non-xCAT networks, rename the xCAT networks (optional), and create  any other xCAT networks. 76  IBM High-Performance Computing Insights with IBM Power System AC922 Clustered Solution  GLYPH<SM590000> mkdef -t network GLYPH<SM590000> lsdef -t network GLYPH<SM590000> chdef -t network GLYPH<SM590000> rmdef -t network GLYPH<SM590000> tabdump networks GLYPH<SM590000> tabedit networks 5.4.5 xCAT networks $ ping -c1  xcat-mn PING  xcat-mn.xcat-cluster (10.1.0.1)  56(84) bytes of data. 64 bytes from xcat-mn.xcat-cluster (10.1.0.1): icmp_seq=1 ttl=64 time=0.025 ms --- xcat-mn.xcat-cluster ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.025/0.025/0.025/0.000 ms $ echo "10.1.0.1 $(hostname -s) $(hostname -f)" >> /etc/hosts $ cat /etc/hosts 127.0.0.1  localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1  localhost localhost.localdomain localhost6 localhost6.localdomain6 10.1.0.1 xcat-mn xcat-mn.xcat-cluster 1. Add the host aliases in the  /etc/hosts  file: 2. Verify that the short host name resolves to the long host name, and that the  ping  test  works: