1) virtual machine is not communicating with each other. 2) virtual machine is not able to communicate with external networking. 3) Virtual machine is not getting IP . what are the steps to be taken for troubleshooting ..
Virtual machine not getting Ip: You need to check if neutron dhcp agent is running well with "neutron agent-list" command and also openvswitch agent should also work fine.
External connectivity: i) Check your network topology carefully, make sure you assigned a gateway to neutron router and both internal and external interfaces are up ii) Check neutron agent-list and make sure all agents are up iii) Check port map with ovs command(ovs-vsctl show) to make sure tunneling is setup correctly if you are using openvswitch iv) Check firewalls on compute and neutron node
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Asked: 2018-01-16 04:29:37 -0500
Seen: 89 times
Last updated: Jan 18 '18
Point 3 is the cause for points 2 and 1.
You need to find out how traffic flows from the DHCP server to the instance, and where it is blocked. Without knowing your setup, all I can offer is the Networking Guide: https://docs.openstack.org/neutron/la....
my vm are not pinging from each other , where i need to look on this.!!
They are not pinging because, as you say:
they got ip address but are not pinging.!!
enable ALL ICMP ingress on your security rules, that will help pinging between VM's.