OpenStack Compute (nova)

Can't ping between vms on different compute nodes

Asked by David Kranz

Using diablo-stable with multi_host it seems that vms cannot ping other vms that are hosted on different compute nodes using addresses allocated from fixed_range (in this case 10.0.0.0/24). A vm can be pinged at this address from its compute node or other vms on the same compute node. Is this expected?

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David Kranz
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David Kranz (david-kranz) said : 		#1

nova.conf:

--use_deprecated_auth
--dhcpbridge_flagfile=/etc/nova/nova.conf
--dhcpbridge=/usr/bin/nova-dhcpbridge
--sql_connection=mysql://nova:notnova@172.18.0.131/nova
--s3_host=172.18.0.131
--rabbit_host=172.18.0.131
--glance_api_servers=172.18.0.131:9292
--logdir=/var/log/nova
--state_path=/var/lib/nova
--lock_path=/var/lock/nova
--verbose
--ec2_url=http://172.18.0.131:8773/services/Cloud
--dmz_cidr=172.18.0.131/32
--fixed_range=10.0.0.0/24
--network_size=256
--image_service=nova.image.glance.GlanceImageService
--bridge_interface=eth1
--flat_network_bridge=br100
--flat_interface=eth1
--network_manager=nova.network.manager.FlatDHCPManager
--force_dhcp_release
--public_interface=eth0
--multi_host=1
--osapi_host=172.18.0.131

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David Kranz (david-kranz) said : 		#2

This is currently bug https://bugs.launchpad.net/bugs/920493

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David Kranz (david-kranz) said : 		#3

This was my fault. eth1 was not being forced up.