github.com/cilium/cilium@v1.16.2/Documentation/cmdref/cilium-dbg_preflight_fqdn-poller.md (about) 1 <!-- This file was autogenerated via cilium cmdref, do not edit manually--> 2 3 ## cilium-dbg preflight fqdn-poller 4 5 Prepare for DNS Polling upgrades to cilium 1.4 6 7 ### Synopsis 8 9 Prepare for DNS Polling upgrades to cilium 1.4 by creating a 10 placeholder --tofqdns-pre-cache file that can be used to pre-seed the DNS 11 cached used in toFQDNs rules. This is useful when upgrading cilium with 12 DNS Polling policies where an interruption in allowed IPs is undesirable. It 13 may also be used when switching from DNS Polling based DNS discovery to DNS 14 Proxy based discovery where an endpoint may not make a DNS request soon 15 enough to be used by toFQDNs policy rules 16 17 ``` 18 cilium-dbg preflight fqdn-poller [flags] 19 ``` 20 21 ### Options 22 23 ``` 24 -h, --help help for fqdn-poller 25 --tofqdns-pre-cache string The path to write serialized ToFQDNs pre-cache information. stdout is the default 26 --tofqdns-pre-cache-ttl int TTL, in seconds, to set on generated ToFQDNs pre-cache information (default 604800) 27 ``` 28 29 ### Options inherited from parent commands 30 31 ``` 32 --config string Config file (default is $HOME/.cilium.yaml) 33 -D, --debug Enable debug messages 34 -H, --host string URI to server-side API 35 ``` 36 37 ### SEE ALSO 38 39 * [cilium-dbg preflight](cilium-dbg_preflight.md) - Cilium upgrade helper 40