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Use the following options to alter Database-related settings.
| Configuration option = Default value | Description | 
|---|---|
| [DEFAULT] | |
advertise_mtu = False | 
        (BoolOpt) If True, effort is made to advertise MTU settings to VMs via network methods (DHCP and RA MTU options) when the network's preferred MTU is known. | 
dnsmasq_config_file =  | 
        (StrOpt) Override the default dnsmasq settings with this file | 
dnsmasq_dns_servers = None | 
        (ListOpt) Comma-separated list of the DNS servers which will be used as forwarders. | 
dnsmasq_lease_max = 16777216 | 
        (IntOpt) Limit number of leases to prevent a denial-of-service. | 
enable_isolated_metadata = False | 
        (BoolOpt) Support Metadata requests on isolated networks. | 
enable_metadata_network = False | 
        (BoolOpt) Allows for serving metadata requests from a dedicated network. Requires enable_isolated_metadata = True | 
num_sync_threads = 4 | 
        (IntOpt) Number of threads to use during sync process. | 
resync_interval = 5 | 
        (IntOpt) Interval to resync. | 
use_namespaces = True | 
        (BoolOpt) Allow overlapping IP. This option is deprecated and will be removed in a future release. | 

