Files
falco/rules/falco_rules.local.yaml
Mark Stemm 8641f3c958 Rework config file handling
These changes allow for a local rules file that will be preserved across
upgrades and allows the main rules file to be overwritten across upgrades.

- Move all config/rules files below /etc/falco/
- Add a "local rules" file /etc/falco/falco_rules.local.yaml. The intent
  is that it contains modifications/deltas to the main rules file
  /etc/falco/falco_rules.yaml. The main falco_rules.yaml should be
  treated as immutable.
- All config files are flagged so they are not overwritten on upgrade.
- Change the handling of the config item "rules_file" in falco.yaml to
  allow a list of files. By default, this list contains:
  [/etc/falco/falco_rules.yaml, /etc/falco/falco_rules.local.yaml].

Also change rpm/debian packaging to ensure that the above files are
preserved across upgrades:

- Use relative paths for share/bin dirs. This ensures that when packaged
  as rpms they won't be flagged as config files.
- Add CMAKE_INSTALL_PREFIX to FALCO_ENGINE_LUA_DIR now that it's relative.
- In debian packaging, flag
  /etc/falco/{falco.yaml,falco_rules.yaml,falco_rules.local.yaml} as
  conffiles. That way they are preserved across upgrades if modified.
- In rpm packaging when using cmake, any files installed with an
  absolute path are automatically flagged as %config. The only files
  directly installed are now the config files, so that addresses the problem.

Add CMAKE_INSTALL_PREFIX to lua dir.
2017-10-05 18:35:39 -07:00

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YAML

####################
# Your custom rules!
####################
# Add new rules, like this one
# - rule: The program "sudo" is run in a container
# desc: An event will trigger every time you run sudo in a container
# condition: evt.type = execve and evt.dir=< and container.id != host and proc.name = sudo
# output: "Sudo run in container (user=%user.name %container.info parent=%proc.pname cmdline=%proc.cmdline)"
# priority: ERROR
# tags: [users, container]
# Or override/append to any rule, macro, or list from the Default Rules