OpenNebula – No tty present and no askpass program specified error

I’ve been reviewing my installation notes. If you can’t run a VM in OpenNebula and the log shows the following:

post: Command "sudo /usr/bin/ovs-vsctl set Port vnet0" failed.
post: sudo: no tty present and no askpass program specified

Check the following:

• your oneadmin user has root privileges to run ovs-vsctl and ovs-ofctl commands
• NOPASSWD is used so no password is asked when running the commands
• The requiretty option is disabled in your sudoers file

Use visudo command as root to edit the sudoers file. Here is an extract of my file.

# Defaults requiretty

# Allow oneadmin to run some commands
oneadmin ALL = NOPASSWD: /sbin/iptables
oneadmin ALL = NOPASSWD: /sbin/ebtables
oneadmin ALL = NOPASSWD: /usr/local/bin/ovs-vsctl
oneadmin ALL = NOPASSWD: /usr/local/bin/ovs-ofctl

Bye

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