from the /etc/sysconfig/ifcfg-devicename network script. • Disable persistent network device naming rules. This means that the Oracle Cloud Infrastructure instance will use the same network device names udev rules for network device naming. For example, if an automated udev rule exists for net-persistence: # cd /etc/udev/rules.d # rm -f 70-persistent-net.rules # ln -s /dev/null /etc/udev/rules.d/70-persistent-net d/70-persistent-net.rules • Enable the serial console. This enables you to troubleshoot the instance when it is running on Oracle Cloud Infrastructure. 1. Edit the /etc/default/grub file, as follows: –

from the /etc/sysconfig/ifcfg-devicename network script. • Disable persistent network device naming rules. This means that the Oracle Cloud Infrastructure instance will use the same network device names udev rules for network device naming. For example, if an automated udev rule exists for net-persistence: # cd /etc/udev/rules.d # rm -f 70-persistent-net.rules # ln -s /dev/null /etc/udev/rules.d/70-persistent-net d/70-persistent-net.rules • Enable the serial console. This enables you to troubleshoot the instance when it is running on Oracle Cloud Infrastructure. 1. Edit the /etc/default/grub file, as follows: –

from the /etc/sysconfig/ifcfg-devicename network script. • Disable persistent network device naming rules. This means that the Oracle Cloud Infrastructure instance will use the same network device names udev rules for network device naming. For example, if an automated udev rule exists for net-persistence: # cd /etc/udev/rules.d # rm -f 70-persistent-net.rules # ln -s /dev/null /etc/udev/rules.d/70-persistent-net d/70-persistent-net.rules • Enable the serial console. This enables you to troubleshoot the instance when it is running on Oracle Cloud Infrastructure. 1. Edit the /etc/default/grub file, as follows: –

from the /etc/sysconfig/ifcfg-devicename network script. • Disable persistent network device naming rules. This means that the Oracle Cloud Infrastructure instance will use the same network device names udev rules for network device naming. For example, if an automated udev rule exists for net-persistence: # cd /etc/udev/rules.d # rm -f 70-persistent-net.rules # ln -s /dev/null /etc/udev/rules.d/70-persistent-net d/70-persistent-net.rules • Enable the serial console. This enables you to troubleshoot the instance when it is running on Oracle Cloud Infrastructure. 1. Edit the /etc/default/grub file, as follows: –

from the /etc/sysconfig/ifcfg-devicename network script. • Disable persistent network device naming rules. This means that the Oracle Cloud Infrastructure instance will use the same network device names udev rules for network device naming. For example, if an automated udev rule exists for net-persistence: # cd /etc/udev/rules.d # rm -f 70-persistent-net.rules # ln -s /dev/null /etc/udev/rules.d/70-persistent-net d/70-persistent-net.rules • Enable the serial console. This enables you to troubleshoot the instance when it is running on Oracle Cloud Infrastructure. 1. Edit the /etc/default/grub file, as follows: –

from the /etc/sysconfig/ifcfg-devicename network script. • Disable persistent network device naming rules. This means that the Oracle Cloud Infrastructure instance will use the same network device names udev rules for network device naming. For example, if an automated udev rule exists for net-persistence: # cd /etc/udev/rules.d # rm -f 70-persistent-net.rules # ln -s /dev/null /etc/udev/rules.d/70-persistent-net d/70-persistent-net.rules • Enable the serial console. This enables you to troubleshoot the instance when it is running on Oracle Cloud Infrastructure. 1. Edit the /etc/default/grub file, as follows: –

from the /etc/sysconfig/ifcfg-devicename network script. • Disable persistent network device naming rules. This means that the Oracle Cloud Infrastructure instance will use the same network device names udev rules for network device naming. For example, if an automated udev rule exists for net-persistence: # cd /etc/udev/rules.d # rm -f 70-persistent-net.rules # ln -s /dev/null /etc/udev/rules.d/70-persistent-net d/70-persistent-net.rules • Enable the serial console. This enables you to troubleshoot the instance when it is running on Oracle Cloud Infrastructure. 1. Edit the /etc/default/grub file, as follows: –

from the /etc/sysconfig/ifcfg-devicename network script. • Disable persistent network device naming rules. This means that the Oracle Cloud Infrastructure instance will use the same network device names udev rules for network device naming. For example, if an automated udev rule exists for net-persistence: # cd /etc/udev/rules.d # rm -f 70-persistent-net.rules # ln -s /dev/null /etc/udev/rules.d/70-persistent-net d/70-persistent-net.rules • Enable the serial console. This enables you to troubleshoot the instance when it is running on Oracle Cloud Infrastructure. 1. Edit the /etc/default/grub file, as follows: –

from the /etc/sysconfig/ifcfg-devicename network script. • Disable persistent network device naming rules. This means that the Oracle Cloud Infrastructure instance will use the same network device names udev rules for network device naming. For example, if an automated udev rule exists for net-persistence: # cd /etc/udev/rules.d # rm -f 70-persistent-net.rules # ln -s /dev/null /etc/udev/rules.d/70-persistent-net d/70-persistent-net.rules • Enable the serial console. This enables you to troubleshoot the instance when it is running on Oracle Cloud Infrastructure. 1. Edit the /etc/default/grub file, as follows: –

attribute name. Unless the attribute is read-only, an analogous set_ method exists. Let’s apply these rules to get the IVirtualBox reference, an ISession instance reference and read the IVirtualBox::revision machine.getName(); Boolean attribute getters can sometimes be called isAttribute() due to JAX-WS naming conventions. 3.2 Changing machine settings: Sessions As said in the previous section, to read a The machine name can contain only characters that are valid file name characters accord- ing to the rules of the file system used to store VirtualBox configuration. 168 5 Classes (interfaces) • You cannot