Disable host.* fields by default for iptables module #18756
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For the iptables module when data is forwarded to Filebeat from another host/device you don't want Filebeat to add `host`. So by default this modules add a `forwarded` tag to events. If you configure the module to not include the `forwarded` tag (e.g. `var.tags: [my_tag]`) then Filebeat will add the `host.*` fields. Relates: elastic#13920
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…-stage-level * upstream/master: (30 commits) Add a GRPC listener service for Agent (elastic#18827) Disable host.* fields by default for iptables module (elastic#18756) [WIP] Clarify capabilities of the Filebeat auditd module (elastic#17068) fix: rename file and remove extra separator (elastic#18881) ci: enable JJBB (elastic#18812) Disable host.* fields by default for Checkpoint module (elastic#18754) Disable host.* fields by default for Cisco module (elastic#18753) Update latest.yml testing env to 7.7.0 (elastic#18535) Upgrade k8s.io/client-go and k8s keystore tests (elastic#18817) Add missing Jenkins stages for Auditbeat (elastic#18835) [Elastic Log Driver] Create a config shim between libbeat and the user (elastic#18605) Use indexers and matchers in config when defaults are enabled (elastic#18818) Fix panic on `metricbeat test modules` (elastic#18797) [CI] Fix permissions in MacOSX agents (elastic#18847) [Ingest Manager] When not port are specified and the https is used fallback to 443 (elastic#18844) [Ingest Manager] Fix install service script for windows (elastic#18814) [Metricbeat] Fix getting compute instance metadata with partial zone/region config (elastic#18757) Improve error messages in s3 input (elastic#18824) Add memory metrics into compute googlecloud (elastic#18802) include bucket name when logging error (elastic#18679) ...
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What does this PR do?
For the iptables module when data is forwarded to Filebeat from another host/device you don't want Filebeat to add
host. So by default this modules add aforwardedtag to events. If you configure the module to not include theforwardedtag (e.g.var.tags: [my_tag]) then Filebeat will add thehost.*fields.Why is it important?
We want Filebeat to follow Elastic Common Schema. And setting host with the correct value is part of that. By setting (or not setting host) we can better interpret events. Without this change the Filebeat host is being attributed as the source even if data was received over syslog from another host.
Checklist
[ ] I have made corresponding change to the default configuration filesCHANGELOG.next.asciidocorCHANGELOG-developer.next.asciidoc.Related issues