9d5c540b47
Previously when starting the dhcp agent the sync_state() process would be extremely expensive as it would query quantum server for each network. In order to improve performance a get_active_networks_info() was added so this information could be retrieved in one query rather than doing a query for each active network. The second part of this patch optimizes the logic to avoid calling get_dhcp_port(). Previously, this method was called once for each network which makes a call to get_subnets() and get_ports() unnecessarily as the dhcp agent can determine itself if it needs to update a port or create a port for dhcp. This patch also threads the inital sync process and maintains backwards compatibility with the previous rpc api. There was also a trivial change to the nvp_plugin where filters are assumed to be a dict. implements blueprint improve-dhcp-agent-performance Change-Id: I3b631057f595250dad76516faa9b421789f60953
47 lines
2.0 KiB
INI
47 lines
2.0 KiB
INI
[DEFAULT]
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# Show debugging output in log (sets DEBUG log level output)
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# debug = true
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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 requires that an inteface driver be set. Choose the one that best
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# matches you plugin.
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# OVS based plugins(OVS, Ryu, NEC, NVP, BigSwitch/Floodlight)
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interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver
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# OVS based plugins(Ryu, NEC, NVP, BigSwitch/Floodlight) that use OVS
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# as OpenFlow switch and check port status
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#ovs_use_veth = True
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# 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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