Enable ping and SSH on VMs

Be sure you enable access to your VMs by using the euca-authorize or nova secgroup-add-rule command. These commands enable you to ping and ssh to your VMs:

	Note
	You must run these commands as root only if the credentials used to interact with nova-api are in /root/.bashrc. If the EC2 credentials are the .bashrc file for another user, you must run these commands as the user.

Run nova commands:

$ nova secgroup-add-rule default icmp -1 -1 0.0.0.0/0
$ nova secgroup-add-rule default tcp 22 22 0.0.0.0/0           

Using euca2ools:

$ euca-authorize -P icmp -t -1:-1 -s 0.0.0.0/0 default
$ euca-authorize -P tcp -p 22 -s 0.0.0.0/0 default         

If you still cannot ping or SSH your instances after issuing the nova secgroup-add-rule commands, look at the number of dnsmasq processes that are running. If you have a running instance, check to see that TWO dnsmasq processes are running. If not, perform the following commands as root:

# killall dnsmasq
# service nova-network restart