How to check the Status of your Backend Services Mirantis Openstack.

echo “show stat” | socat /var/lib/haproxy/stats stdio | grep BACKEND \ | awk -F , ‘{print $1, $2, $18}’ Output will be stats BACKEND UP horizon BACKEND UP keystone-1 BACKEND UP keystone-2 BACKEND UP nova-api-1 BACKEND UP nova-api-2 BACKEND UP nova-metadata-api BACKEND UP cinder-api BACKEND UP glance-api BACKEND UP neutron BACKEND UP glance-registry BACKEND UP…

Find out DHCP ports which are in DOWN state

There is two DHCP servers running in each network created under openstack. Each network will have two DHCP servers. The virtual machines in this network is getting IP Address from these DHCP servers. Some times, the status of these DHCP ports shows down while wer querying them. There is a bug reported in neutron, in…

Understanding dnsmasq

Dnsmasq provides network infrastructure for small networks: DNS, DHCP, router advertisement and network boot. It is designed to be lightweight and have a small footprint, suitable for resource constrained routers and firewalls. It has also been widely used for tethering on smartphones and portable hotspots, and to support virtual networking in virtualisation frameworks. When we…