How does your setup look like? Are you using a multinode with tunneling (vxlan or gre) configured? If so maybe your packets get dropped due to wrong MTU configuration.
You could try with ping -s and tcpdump how far you can get and if there's some point where packets get dropped or fragmented. Andreas On Do, 2015-07-16 at 09:25 +0000, aishwarya.adyanth...@accenture.com wrote: > Hi, > > I did add a dns nameserver in the /etc/resolv.conf file. The problem I'm > facing here it at times I'm able to download packages or ping any internet > site but then I loose connection from accessing internet. I checked my > Openstack services and they are up and in running state. > > > > -----Original Message----- > From: Andreas Scheuring [mailto:scheu...@linux.vnet.ibm.com] > Sent: Thursday, July 16, 2015 1:22 PM > To: Adyanthaya, Aishwarya > Cc: openstack-operators@lists.openstack.org > Subject: Re: [Openstack-operators] Unable to connect to internet from > Openstack instance > > Looks like name resolution does not work properly. You need to add an dns > entry to your instance. You can try that by hand first > (/etc/resolv.conf) or you could try to add the dns info to your neutron > subnet. > > The dns server usually lives somewhere outside your openstack installation, > so you should provide the external one > > Andreas (IRC: scheuran) > > > On Do, 2015-07-16 at 05:09 +0000, aishwarya.adyanth...@accenture.com > wrote: > > Hi, > > > > > > > > I created an instance in my dashboard and attached a floating IP to > > it. I’m able to ssh to node (which has Ubuntu 14.04 image) but when I > > try to do an ‘apt-get update && apt-get upgrade’ I’m facing issue > > there. Below is what I’m facing: > > > > > > > > root@node:/home/ubuntu# apt-get update && apt-get upgrade > > > > Err http://archive.ubuntu.com trusty InRelease > > > > > > > > Err http://archive.ubuntu.com trusty-updates InRelease > > > > > > > > Err http://security.ubuntu.com trusty-security InRelease > > > > > > > > Err http://archive.ubuntu.com trusty Release.gpg > > > > Could not resolve 'archive.ubuntu.com' > > > > Err http://security.ubuntu.com trusty-security Release.gpg > > > > Could not resolve 'security.ubuntu.com' > > > > Err http://archive.ubuntu.com trusty-updates Release.gpg > > > > Could not resolve 'archive.ubuntu.com' > > > > Reading package lists... Done > > > > W: Failed to fetch > > http://archive.ubuntu.com/ubuntu/dists/trusty/InRelease > > > > > > > > W: Failed to fetch > > http://archive.ubuntu.com/ubuntu/dists/trusty-updates/InRelease > > > > > > > > W: Failed to fetch > > http://security.ubuntu.com/ubuntu/dists/trusty-security/InRelease > > > > > > > > W: Failed to fetch > > http://archive.ubuntu.com/ubuntu/dists/trusty/Release.gpg Could not > > resolve 'archive.ubuntu.com' > > > > > > > > W: Failed to fetch > > http://archive.ubuntu.com/ubuntu/dists/trusty-updates/Release.gpg > > Could not resolve 'archive.ubuntu.com' > > > > > > > > W: Failed to fetch > > http://security.ubuntu.com/ubuntu/dists/trusty-security/Release.gpg > > Could not resolve 'security.ubuntu.com' > > > > > > > > W: Some index files failed to download. They have been ignored, or old > > ones used instead. > > > > Reading package lists... Done > > > > Building dependency tree > > > > Reading state information... Done > > > > Calculating upgrade... Done > > > > 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. > > > > > > > > Thank you, > > > > Aishwarya Adyanthaya > > > > > > > > > > ______________________________________________________________________ > > > > This message is for the designated recipient only and may contain > > privileged, proprietary, or otherwise confidential information. If you > > have received it in error, please notify the sender immediately and > > delete the original. Any other use of the e-mail by you is prohibited. > > Where allowed by local law, electronic communications with Accenture > > and its affiliates, including e-mail and instant messaging (including > > content), may be scanned by our systems for the purposes of > > information security and assessment of internal compliance with > > Accenture policy. > > ______________________________________________________________________ > > ________________ > > > > www.accenture.com > > _______________________________________________ > > OpenStack-operators mailing list > > OpenStack-operators@lists.openstack.org > > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operator > > s > > -- > Andreas > (IRC: scheuran) > > > > ________________________________ > > This message is for the designated recipient only and may contain privileged, > proprietary, or otherwise confidential information. If you have received it > in error, please notify the sender immediately and delete the original. Any > other use of the e-mail by you is prohibited. Where allowed by local law, > electronic communications with Accenture and its affiliates, including e-mail > and instant messaging (including content), may be scanned by our systems for > the purposes of information security and assessment of internal compliance > with Accenture policy. > ______________________________________________________________________________________ > > www.accenture.com -- Andreas (IRC: scheuran) _______________________________________________ OpenStack-operators mailing list OpenStack-operators@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
