2b50716963
Adds a configuration option to tell the network agents to delete namespaces when they are no longer in use. The option defaults to False so that the agent will not attempt to delete namespaces in environments where this is not safe. This has been working well in deployments where iproute2 has been patched with commit 58a3e8270fe72f8ed92687d3a3132c2a708582dd or it is new enough to include it without being patched. Change-Id: Ice5242c6f0446d16aaaa7ee353d674310297ef72 Closes-Bug: #1250596 Related-Bug: #1052535
81 lines
3.2 KiB
INI
81 lines
3.2 KiB
INI
[DEFAULT]
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# Show debugging output in log (sets DEBUG log level output)
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# debug = False
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# The DHCP agent will resync its state with Neutron to recover from any
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# transient notification or rpc errors. The interval is number of
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# seconds between attempts.
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# resync_interval = 5
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# The DHCP agent requires an interface driver be set. Choose the one that best
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# matches your plugin.
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# interface_driver =
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# Example of interface_driver option for OVS based plugins(OVS, Ryu, NEC, NVP,
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# BigSwitch/Floodlight)
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# interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
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# Use veth for an OVS interface or not.
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# Support kernels with limited namespace support
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# (e.g. RHEL 6.5) so long as ovs_use_veth is set to True.
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# ovs_use_veth = False
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# Example of interface_driver option for LinuxBridge
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# interface_driver = neutron.agent.linux.interface.BridgeInterfaceDriver
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# The agent can use other DHCP drivers. Dnsmasq is the simplest and requires
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# no additional setup of the DHCP server.
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# dhcp_driver = neutron.agent.linux.dhcp.Dnsmasq
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# Allow overlapping IP (Must have kernel build with CONFIG_NET_NS=y and
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# iproute2 package that supports namespaces).
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# use_namespaces = True
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# The DHCP server can assist with providing metadata support on isolated
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# networks. Setting this value to True will cause the DHCP server to append
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# specific host routes to the DHCP request. The metadata service will only
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# be activated when the subnet gateway_ip is None. The guest instance must
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# be configured to request host routes via DHCP (Option 121).
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# enable_isolated_metadata = False
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# Allows for serving metadata requests coming from a dedicated metadata
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# access network whose cidr is 169.254.169.254/16 (or larger prefix), and
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# is connected to a Neutron router from which the VMs send metadata
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# request. In this case DHCP Option 121 will not be injected in VMs, as
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# they will be able to reach 169.254.169.254 through a router.
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# This option requires enable_isolated_metadata = True
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# enable_metadata_network = False
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# Number of threads to use during sync process. Should not exceed connection
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# pool size configured on server.
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# num_sync_threads = 4
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# Location to store DHCP server config files
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# dhcp_confs = $state_path/dhcp
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# Domain to use for building the hostnames
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# dhcp_domain = openstacklocal
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# Override the default dnsmasq settings with this file
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# dnsmasq_config_file =
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# Use another DNS server before any in /etc/resolv.conf.
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# dnsmasq_dns_server =
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# Limit number of leases to prevent a denial-of-service.
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# dnsmasq_lease_max = 16777216
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# Location to DHCP lease relay UNIX domain socket
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# dhcp_lease_relay_socket = $state_path/dhcp/lease_relay
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# Location of Metadata Proxy UNIX domain socket
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# metadata_proxy_socket = $state_path/metadata_proxy
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# dhcp_delete_namespaces, which is false by default, can be set to True if
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# namespaces can be deleted cleanly on the host running the dhcp agent.
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# Do not enable this until you understand the problem with the Linux iproute
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# utility mentioned in https://bugs.launchpad.net/neutron/+bug/1052535 and
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# you are sure that your version of iproute does not suffer from the problem.
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# If True, namespaces will be deleted when a dhcp server is disabled.
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# dhcp_delete_namespaces = False
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