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File system flags

docs/root/operations/fs_flags.rst

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.. _operations_file_system_flags:

File system flags

Envoy supports file system "flags" that alter state at startup. This is used to persist changes between restarts if necessary. The flag files should be placed in the directory specified in the :ref:flags_path <envoy_v3_api_field_config.bootstrap.v3.Bootstrap.flags_path> configuration option. The currently supported flag files are:

drain If this file exists, Envoy will start in health check failing mode, similar to after the :http:post:/healthcheck/fail command has been executed.