Log options

--echo parms Echo parms to log output.

Designed to be used to send messages to a controlling application which is receiving the OpenVPN log output.

--errors-to-stderr Output errors to stderr instead of stdout unless log output is redirected by one of the --log options.

--log file Output logging messages to file, including output to stdout/stderr which is generated by called scripts. If file already exists it will be truncated. This option takes effect immediately when it is parsed in the command line and will supersede syslog output if --daemon is also specified. This option is persistent over the entire course of an OpenVPN instantiation and will not be reset by :code:SIGHUP, :code:SIGUSR1, or --ping-restart.

Note that on Windows, when OpenVPN is started as a service, logging occurs by default without the need to specify this option.

--log-append file Append logging messages to file. If file does not exist, it will be created. This option behaves exactly like --log except that it appends to rather than truncating the log file.

--machine-readable-output Always write timestamps and message flags to log messages, even when they otherwise would not be prefixed. In particular, this applies to log messages sent to stdout.

--mute n Log at most n consecutive messages in the same category. This is useful to limit repetitive logging of similar message types.

--mute-replay-warnings Silence the output of replay warnings, which are a common false alarm on WiFi networks. This option preserves the security of the replay protection code without the verbosity associated with warnings about duplicate packets.

--suppress-timestamps Avoid writing timestamps to log messages, even when they otherwise would be prepended. In particular, this applies to log messages sent to stdout.

--syslog progname Direct log output to system logger, but do not become a daemon. See --daemon directive above for description of progname parameter.

--verb n Set output verbosity to n (default :code:1). Each level shows all info from the previous levels. Level :code:3 is recommended if you want a good summary of what's happening without being swamped by output.

:code:0 No output except fatal errors.

:code:1 to :code:4 Normal usage range.

:code:5 Outputs :code:R and :code:W characters to the console for each packet read and write, uppercase is used for TCP/UDP packets and lowercase is used for TUN/TAP packets.

:code:6 to :code:11 Debug info range (see :code:errlevel.h in the source code for additional information on debug levels).