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openstack-nova-network dead but pid file exists (Grizzly on centos 6.4) [closed]

asked 2013-08-23 03:38:30 -0500

vicky gravatar image

updated 2013-08-26 00:01:23 -0500

fifieldt gravatar image

Hi Friends

I am using Grizzly Version on CENTOS 6.3. When I am trying to start openstack-nova-network service on Cloud Controller Node but it gives me error "openstack-nova-network dead but pid file exists". In between, i had stop the iptables services and selinux to off. For more information email me . Here I am paste my contents of nova.conf file and logs of /var/log/nova/network.log


[DEFAULT] verbose=True logdir = /var/log/nova state_path = /var/lib/nova lock_path = /var/lib/nova/tmp rootwrap_config = /etc/nova/rootwrap.conf

#SCHEDULER compute_scheduler_driver=nova.scheduler.filter_scheduler.FilterScheduler

#VOLUMES volume_api_class=nova.volume.cinder.API volume_driver=nova.volume.driver.ISCSIDriver volume_group=cinder-volumes volume_name_template=volume-%s iscsi_helper=tgtadm volumes_dir = /etc/nova/volumes


sql_connection = mysql://nova:nova@


compute_driver=libvirt.LibvirtDriver libvirt_type=kvm instance_name_template=instance-%08x api_paste_config=/etc/nova/api-paste.ini libvirt_nonblocking = True libvirt_inject_partition = -1 libvirt_cpu_mode=host-model

COMPUTE/APIS: i you have separate configs for separate services

this lag is required for both nova-api and nova-compute



osapi_compute_extension=nova.api.openstack.compute.contrib.standard_extensions ec2_dmz_host= s3_host= enabled_apis=ec2,osapi_compute,metadata


qpid_hostname= rpc_backend=nova.openstack.common.rpc.impl_qpid


image_service=nova.image.glance.GlanceImageService glance_api_servers=


network_manager = force_dhcp_release = True dhcpbridge_flagfile = /etc/nova/nova.conf firewall_driver = nova.virt.libvirt.firewall.IptablesFirewallDriver

Change my_ip to match each host

my_ip= public_interace=eth1 vlan_interace=eth1 flat_interface=eth1 flat_network_bridge=br100 fixed_range=



Change vncserver_proxyclient_address and vncserver_listen to match each compute host

vncserver_proxyclient_address= vncserver_listen=



[keystone_authtoken] auth_host= auth_port=35357 auth_protocol=http admin_tenant_name=service admin_user=nova admin_password=nova signing_dirname=/tmp/keystone-signing-nova

dhcpbridge = /usr/bin/nova-dhcpbridge #injected_network_template = /usr/share/nova/interfaces.template


2013-08-23 12:10:16 17230 TRACE nova Command: sudo nova-rootwrap /etc/nova/rootwrap.conf FLAGFILE=/etc/nova/nova.conf NETWORK_ID=1 dnsmasq --strict-order --bind-interfaces --conf-file= --domain=novalocal --pid-file=/var/lib/nova/networks/ --listen-address= --except-interface=lo --dhcp-range=set:private,,static,,120s --dhcp-lease-max=256 --dhcp-hostsfile=/var/lib/nova/networks/nova-br100.conf --dhcp-script=/usr/lib/python2.6/site-packages/bin/nova-dhcpbridge --leasefile-ro 2013-08-23 12:10:16 17230 TRACE nova Exit code: 11 2013-08-23 12:10:16 17230 TRACE nova Stdout: '' 2013-08-23 12:10:16 17230 TRACE nova Stderr: '2013-08-23 12:10:16 CRITICAL nova [req-213b0097-9e84-41fc-944e-0648567cfb47 None None] cannot import name BigInteger\n2013-08-23 12:10:16 17349 TRACE nova Traceback (most recent call last):\n2013-08-23 12:10:16 17349 TRACE nova File "/usr/lib/python2.6/site-packages/bin/nova-dhcpbridge", line 128, in <module>\n2013-08-23 12:10:16 17349 TRACE nova main()\n2013-08-23 12:10:16 17349 TRACE nova File "/usr/lib/python2.6/site-packages/bin/nova-dhcpbridge", line 122, in main ... (more)

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Closed for the following reason the question is answered, right answer was accepted by koolhead17
close date 2014-06-05 21:15:53.059935

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answered 2013-08-23 07:54:56 -0500

vicky gravatar image

Hi Friends

Sorry to disturb you. Issue has been resolved. I have update the python-sqlalchemy from 0.5 to 0.7.


(Bharat Bagai)

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Asked: 2013-08-23 03:38:30 -0500

Seen: 1,699 times

Last updated: Aug 23 '13