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Vm in openstack can't download anything

asked 2015-11-07 01:54:43 -0500

Eggy gravatar image

updated 2015-11-08 20:33:55 -0500

My OpenStack version is Juno. I had installed my Openstack and the VM in OpenStack's netwrok is work. VMs can ping outer netwrok like But I have no idea why I can't download anything in outer network.The command (like wget,apt-get update all) can't work.I install Ubuntu 14.04 desktop in the VM. Can anyone help?? (image description)

The picture is that I open my browser and I can't browse anything.Why???

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answered 2015-11-07 22:36:49 -0500

Eggy gravatar image

any one can help??

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answered 2015-11-08 00:23:42 -0500

Bipin gravatar image


That could be security group issue. Add a rule for Ingress traffic to port 80. Please show the output of

nova secgroup-list-rules <your-secgroup-name>


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answered 2015-11-09 04:57:23 -0500

capsali gravatar image

Well you need to provide more details! What setup are you using? Neutron or nova-netowrk? Provider network type (flat,vlan,etc)? Tenant network type (gre,vxlan,vlan)?

If you are using gre or vxlan for tenant network one issue could be mtu setting in guest OS. It must be 1454 instead of 1500 to acomodate for tunnel header. Try lowering mtu inside the guest OS and see if it works. If this is the case than you must instruct dhcp server to override default mtu every time a lease is given. The instructions are in the docs at

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Asked: 2015-11-07 01:49:02 -0500

Seen: 73 times

Last updated: Nov 09 '15