sudo_logsrvd.conf(5) — Linux manual page

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SUDO_LOGSRVD.CONF(5)     BSD File Formats Manual    SUDO_LOGSRVD.CONF(5)

NAME         top

     sudo_logsrvd.conf — configuration for sudo_logsrvd

DESCRIPTION         top

     The sudo_logsrvd.conf file is used to configure the sudo_logsrvd
     log server.  It uses an INI-style format made up of sections in
     square brackets and “key = value” pairs specific to each section
     below the section name.  Depending on the key, values may be
     integers, booleans, or strings.  Section and key names are not case
     sensitive, but values are.

     The pound sign (‘#’) is used to indicate a comment.  Both the
     comment character and any text after it, up to the end of the line,
     are ignored.  Lines beginning with a semi-colon (‘;’) are also
     ignored.

     Long lines can be continued with a backslash (‘\’) as the last
     character on the line.  Leading white space is removed from the
     beginning of lines even when the continuation character is used.

     The EXAMPLES section contains a copy of the default
     sudo_logsrvd.conf file.

     The following configuration sections are recognized:

           server
           relay
           iolog
           eventlog
           syslog
           logfile

     Each section is described in detail below.

   server
     The server section configures the address and port the server will
     listen on.  The following keys are recognized:

     listen_address = host[:port][(tls)]
               The host name or IP address, optional port to listen on
               and an optional Transport Layer Security (TLS) flag in
               parentheses.

               The host may be a host name, an IPv4 address, an IPv6
               address in square brackets or the wild card entry ‘*’.  A
               host setting of ‘*’ will cause sudo_logsrvd to listen on
               all configured network interfaces.

               If the optional tls flag is present, sudo_logsrvd will
               secure the connection with TLS version 1.2 or 1.3.
               Versions of TLS prior to 1.2 are not supported.  See
               sudo_logsrvd(8) for details on generating TLS keys and
               certificates.

               If a port is specified, it may either be a port number or
               a known service name as defined by the system service
               name database.  If no port is specified, port 30343 will
               be used for plaintext connections and port 30344 will be
               used for TLS connections.

               The default value is:
                     listen_address = *:30343
                     listen_address = *:30344(tls)
               which will listen on all configured network interfaces
               for both plaintext and TLS connections.  Multiple
               listen_address lines may be specified to listen on more
               than one port or interface.

     server_log = string
               Where to log server warning and error messages.
               Supported values are none, stderr, syslog, or a path name
               beginning with the ‘/’ character.  A value of stderr is
               only effective when used in conjunction with the -n
               option.  The default value is syslog.

     pid_file = path
               The path to the file containing the process ID of the
               running sudo_logsrvd.  If set to an empty value, or if
               sudo_logsrvd is run with the -n option, no pid_file will
               be created.  If pid_file refers to a symbolic link, it
               will be ignored.  The default value is
               /run/sudo/sudo_logsrvd.pid.

     tcp_keepalive = boolean
               If true, sudo_logsrvd will enable the TCP keepalive
               socket option on the client connection.  This enables the
               periodic transmission of keepalive messages to the
               client.  If the client does not respond to a message in
               time, the connection will be closed.  Defaults to true.

     timeout = number
               The amount of time, in seconds, sudo_logsrvd will wait
               for the client to respond.  A value of 0 will disable the
               timeout.  The default value is 30.

     tls_cacert = path
               The path to a certificate authority bundle file, in PEM
               format, to use instead of the system's default
               certificate authority database when authenticating
               clients.  The default is to use /etc/ssl/sudo/cacert.pem
               if it exists, otherwise the system's default certificate
               authority database is used.

     tls_cert = path
               The path to the server's certificate file, in PEM format.
               The default value is
               /etc/ssl/sudo/certs/logsrvd_cert.pem.

     tls_checkpeer = bool
               If true, client certificates will be validated by
               sudo_logsrvd; clients without a valid certificate will be
               unable to connect.  If false, no validation of client
               certificates will be performed.  It true and client
               certificates are created using a private certificate
               authority, the tls_cacert setting must be set to a CA
               bundle that contains the CA certificate used to generate
               the client certificate.  The default value is false.

     tls_ciphers_v12 = string
               A list of ciphers to use for connections secured by TLS
               version 1.2 only, separated by a colon ‘:’.  See the
               CIPHER LIST FORMAT section in openssl-ciphers(1) for full
               details.  The default value is “HIGH:!aNULL” which
               consists of encryption cipher suites with key lengths
               larger than 128 bits, and some cipher suites with 128-bit
               keys.  Cipher suites that offer no authentication are
               excluded.

     tls_ciphers_v13 = string
               A list of ciphers to use for connections secured by TLS
               version 1.3 only, separated by a colon ‘:’.  Supported
               cipher suites depend on the version of OpenSSL used, but
               should include the following:

                     TLS_AES_128_GCM_SHA256
                     TLS_AES_256_GCM_SHA384
                     TLS_CHACHA20_POLY1305_SHA256
                     TLS_AES_128_CCM_SHA256
                     TLS_AES_128_CCM_8_SHA256

               The default cipher suite is “TLS_AES_256_GCM_SHA384”.

     tls_dhparams = path
               The path to a file containing custom Diffie-Hellman
               parameters in PEM format.  This file can be created with
               the following command:

               openssl dhparam -out /etc/sudo_logsrvd_dhparams.pem 2048

               By default, sudo_logsrvd will use the OpenSSL defaults
               for Diffie-Hellman key generation.

     tls_key = path
               The path to the server's private key file, in PEM format.
               The default value is
               /etc/ssl/sudo/private/logsrvd_key.pem.

     tls_verify = bool
               If true, sudo_logsrvd will validate its own certificate
               at startup time or when the configuration is changed.  If
               false, no verification is performed of the server
               certificate.  When using self-signed certificates without
               a certificate authority, this setting should be set to
               false.  The default value is true.

   relay
     The relay section configures the optional logsrv relay host and
     port the server will connect to.  The TLS configuration keys are
     optional, by default the corresponding keys in the server section
     will be used.  They are only present in this section to make it
     possible for the relay connection to use a different set of TLS
     parameters from the client-facing server.  The following keys are
     recognized:

     connect_timeout = number
               The amount of time, in seconds, sudo_logsrvd will wait
               for the connection to a relay_host (see below) to
               complete.  Once the connection is complete, the timeout
               setting controls the amount of time sudo_logsrvd will
               wait for the relay to respond.  A value of 0 will disable
               the timeout.  The default value is 30.

     relay_dir = path
               The directory in which log messages are temporarily
               stored before they are sent to the relay host.  Messages
               are stored in the wire format specified by
               sudo_logsrv.proto(5) The default value is
               /var/log/sudo_logsrvd.

     relay_host = host[:port][(tls)]
               The relay host name or IP address, optional port to
               connect to and an optional Transport Layer Security (TLS)
               flag in parentheses.  The syntax is identical to
               listen_address in the server section with one exception:
               the wild card ‘*’ syntax is not supported.

               When this setting is enabled, messages from the client
               will be forwarded to one of the specified relay hosts
               instead of being stored locally.  The host could be
               running an instance of sudo_logsrvd or another server
               that supports the sudo_logsrv.proto(5) protocol.

               If multiple relay_host lines are specified, the first
               available relay host will be used.

     retry_interval = number
               The number of seconds to wait after a connection error
               before making a new attempt to forward a message to a
               relay host.  The default value is 30.

     store_first = boolean
               If true, sudo_logsrvd will store logs locally before
               relaying them.  Once the log is complete, a connection to
               the relay host is opened and the log is relayed.  If the
               network connection is interrupted before the log can be
               fully transferred, it will be retransmitted later.  The
               default is to relay logs in real-time.

     tcp_keepalive = boolean
               If true, sudo_logsrvd will enable the TCP keepalive
               socket option on the relay connection.  This enables the
               periodic transmission of keepalive messages to the relay
               server.  If the relay does not respond to a message in
               time, the connection will be closed.

     timeout = number
               The amount of time, in seconds, sudo_logsrvd will wait
               for the relay server to respond after a connection has
               succeeded.  A value of 0 will disable the timeout.  The
               default value is 30.

     tls_cacert = path
               The path to a certificate authority bundle file, in PEM
               format, to use instead of the system's default
               certificate authority database when authenticating
               clients.  The default is to use the value specified in
               the server section, or the system's default certificate
               authority database if no value is set.

     tls_cert = path
               The path to the server's certificate file, in PEM format.
               The default is to use the value specified in the server
               section.

     tls_checkpeer = bool
               If true, the relay host's certificate will be validated
               by sudo_logsrvd; connections to a relay without a valid
               certificate will fail.  If false, no validation of relay
               certificates will be performed.  It true and relay
               certificates are created using a private certificate
               authority, the tls_cacert setting must be set to a CA
               bundle that contains the CA certificate used to generate
               the relay certificate.  The default is to use the value
               specified in the server section.

     tls_ciphers_v12 = string
               A list of ciphers to use for connections secured by TLS
               version 1.2 only, separated by a colon ‘:’.  See the
               CIPHER LIST FORMAT section in openssl-ciphers(1) for full
               details.  The default is to use the value specified in
               the server section.

     tls_ciphers_v13 = string
               A list of ciphers to use for connections secured by TLS
               version 1.3 only, separated by a colon ‘:’.  Supported
               cipher suites depend on the version of OpenSSL used, see
               the server section for more information.  The default is
               to use the value specified in the server section.

     tls_dhparams = path
               The path to a file containing custom Diffie-Hellman
               parameters in PEM format.  The default is to use the
               value specified in the server section.

     tls_key = path
               The path to the server's private key file, in PEM format.
               The default is to use the value specified in the server
               section.

     tls_verify = bool
               If true, the server's certificate used for relaying will
               be verified at startup.  If false, no verification is
               performed of the server certificate.  When using self-
               signed certificates without a certificate authority, this
               setting should be set to false.  The default is to use
               the value specified in the server section.

   iolog
     The iolog section configures I/O log parameters.  These settings
     are identical to the I/O configuration in sudoers(5).  The
     following keys are recognized:

     iolog_compress = boolean
               If set, I/O logs will be compressed using zlib.  Enabling
               compression can make it harder to view the logs in real-
               time as the program is executing due to buffering.  The
               default value is false.

     iolog_dir = path
               The top-level directory to use when constructing the path
               name for the I/O log directory.  The session sequence
               number, if any, is stored in the directory.  The default
               value is /var/log/sudo-io.

               The following percent (‘%’) escape sequences are
               supported:

               %{seq}
                     expanded to a monotonically increasing base-36
                     sequence number, such as 0100A5, where every two
                     digits are used to form a new directory, e.g.,
                     01/00/A5

               %{user}
                     expanded to the invoking user's login name

               %{group}
                     expanded to the name of the invoking user's real
                     group-ID

               %{runas_user}
                     expanded to the login name of the user the command
                     will be run as (e.g., root)

               %{runas_group}
                     expanded to the group name of the user the command
                     will be run as (e.g., wheel)

               %{hostname}
                     expanded to the local host name without the domain
                     name

               %{command}
                     expanded to the base name of the command being run

               In addition, any escape sequences supported by the
               system's strftime(3) function will be expanded.

               To include a literal ‘%’ character, the string ‘%%’
               should be used.

     iolog_file = path
               The path name, relative to iolog_dir, in which to store
               I/O logs.  It is possible for iolog_file to contain
               directory components.  The default value is “%{seq}”.

               See the iolog_dir setting above for a list of supported
               percent (‘%’) escape sequences.

               In addition to the escape sequences, path names that end
               in six or more Xs will have the Xs replaced with a unique
               combination of digits and letters, similar to the
               mktemp(3) function.

               If the path created by concatenating iolog_dir and
               iolog_file already exists, the existing I/O log file will
               be truncated and overwritten unless iolog_file ends in
               six or more Xs.

     iolog_flush = boolean
               If set, I/O log data is flushed to disk after each write
               instead of buffering it.  This makes it possible to view
               the logs in real-time as the program is executing but may
               significantly reduce the effectiveness of I/O log
               compression.  I/O logs are always flushed before sending
               a commit point to the client regardless of this setting.
               The default value is true.

     iolog_group = name
               The group name to look up when setting the group-ID on
               new I/O log files and directories.  If iolog_group is not
               set, the primary group-ID of the user specified by
               iolog_user is used. If neither iolog_group nor iolog_user
               are set, I/O log files and directories are created with
               group-ID 0.

     iolog_mode = mode
               The file mode to use when creating I/O log files.  Mode
               bits for read and write permissions for owner, group, or
               other are honored, everything else is ignored.  The file
               permissions will always include the owner read and write
               bits, even if they are not present in the specified mode.
               When creating I/O log directories, search (execute) bits
               are added to match the read and write bits specified by
               iolog_mode.  The default value is 0600.

     iolog_user = name
               The user name to look up when setting the owner of new
               I/O log files and directories.  If iolog_group is set, it
               will be used instead of the user's primary group-ID.  By
               default, I/O log files and directories are created with
               user and group-ID 0.

     log_passwords = bool
               Most programs that require a user's password will disable
               echo before reading the password to avoid displaying the
               plaintext password on the screen.  However, if terminal
               input is being logged, the password will still be present
               in the I/O log.  If log_passwords is set to false,
               sudo_logsrvd will attempt to prevent passwords from being
               logged.  It does this by using the regular expressions in
               passprompt_regex to match a password prompt in the
               terminal output buffer.  When a match is found, input
               characters in the I/O log will be replaced with ‘*’ until
               either a line feed or carriage return is found in the
               terminal input or a new terminal output buffer is
               received.  If, however, a program displays characters as
               the user types them (such as sudo when the pwfeedback
               option is set), only the first character of the password
               will be replaced in the I/O log.  The default value is
               true.

     maxseq = number
               The maximum sequence number that will be substituted for
               the “%{seq}” escape in the I/O log file (see the
               iolog_dir description above for more information).  While
               the value substituted for “%{seq}” is in base 36, maxseq
               itself should be expressed in decimal.  Values larger
               than 2176782336 (which corresponds to the base 36
               sequence number “ZZZZZZ”) will be silently truncated to
               2176782336.  The default value is 2176782336.

     passprompt_regex = string
               One or more POSIX extended regular expressions used to
               match password prompts in the terminal output when
               log_passwords is disabled.  As an extension, if the
               regular expression begins with “(?i)”, it will be matched
               in a case-insensitive manner.  Multiple passprompt_regex
               settings may be specified.  Each regular expression is
               limited to 1024 characters.  The default value is
               “[Pp]assword[: ]*”.

   eventlog
     The eventlog section configures how (and if) security policy events
     are logged.

     log_type = string
           Where to log accept, reject, and alert events reported by the
           policy.  Supported values are syslog, logfile, and none.  The
           default value is syslog.

     log_exit = boolean
           If true, sudo_logsrvd will log an event when a command exits
           or is terminated by a signal.  Defaults to false.

     log_format = string
           The event log format.  Supported log formats are “sudo” for
           traditional sudo-style logs and “json” for JSON-format logs.
           The JSON log entries contain the full contents of the accept,
           reject, exit and alert messages.  The default value is sudo.

   syslog
     The syslog section configures how events are logged via syslog(3).

     facility = string
           Syslog facility if syslog is being used for logging.
           Defaults to authpriv.

           The following syslog facilities are supported: authpriv (if
           your OS supports it), auth, daemon, user, local0, local1,
           local2, local3, local4, local5, local6, and local7.

     accept_priority = string
           Syslog priority to use when the user is allowed to run a
           command and authentication is successful.  Defaults to
           notice.

           The following syslog priorities are supported: alert, crit,
           debug, emerg, err, info, notice, warning, and none.  Setting
           it to a value of none will disable logging of successful
           commands.

     reject_priority = string
           Syslog priority to use when the user is not allowed to run a
           command or when authentication is unsuccessful.  Defaults to
           alert.

           See accept_priority for the list of supported syslog
           priorities.

     alert_priority = string
           Syslog priority to use for event log alert messages received
           from the client.  Defaults to alert.

           See accept_priority for the list of supported syslog
           priorities.

     maxlen = number
           On many systems, syslog(3) has a relatively small log buffer.
           IETF RFC 5424 states that syslog servers must support
           messages of at least 480 bytes and should support messages up
           to 2048 bytes.  By default, sudo_logsrvd creates log messages
           up to 960 bytes which corresponds to the historic BSD syslog
           implementation which used a 1024 byte buffer to store the
           message, date, hostname, and program name.

           To prevent syslog messages from being truncated, sudo_logsrvd
           will split up sudo-style log messages that are larger than
           maxlen bytes.  When a message is split, additional parts will
           include the string “(command continued)” after the user name
           and before the continued command line arguments.  JSON-format
           log entries are never split and are not affected by maxlen.

     server_facility = string
           Syslog facility if syslog is being used for server warning
           messages.  See above for a list of supported facilities.
           Defaults to daemon

   logfile
     The logfile section consists of settings related to logging to a
     plain file (not syslog).

     path = string
           The path to the file-based event log.  This path must be
           fully-qualified and start with a ‘/’ character.  The default
           value is /var/log/sudo.log.

     time_format = string
           The string used when formatting the date and time for file-
           based event logs.  Formatting is performed via the system's
           strftime(3) function so any escape sequences supported by
           that function will be expanded.  The default value is “%h %e
           %T” which produces dates like “Oct 3 07:15:24” in the ‘C’
           locale.

FILES         top

     /etc/sudo_logsrvd.conf    Sudo log server configuration file

EXAMPLES         top

     #
     # sudo logsrv daemon configuration
     #

     [server]
     # The host name or IP address and port to listen on with an optional TLS
     # flag.  If no port is specified, port 30343 will be used for plaintext
     # connections and port 30344 will be used to TLS connections.
     # The following forms are accepted:
     #   listen_address = hostname(tls)
     #   listen_address = hostname:port(tls)
     #   listen_address = IPv4_address(tls)
     #   listen_address = IPv4_address:port(tls)
     #   listen_address = [IPv6_address](tls)
     #   listen_address = [IPv6_address]:port(tls)
     #
     # The (tls) suffix should be omitted for plaintext connections.
     #
     # Multiple listen_address settings may be specified.
     # The default is to listen on all addresses.
     #listen_address = *:30343
     #listen_address = *:30344(tls)

     # The file containing the ID of the running sudo_logsrvd process.
     #pid_file = /run/sudo/sudo_logsrvd.pid

     # Where to log server warnings: none, stderr, syslog, or a path name.
     #server_log = syslog

     # If true, enable the SO_KEEPALIVE socket option on client connections.
     # Defaults to true.
     #tcp_keepalive = true

     # The amount of time, in seconds, the server will wait for the client to
     # respond.  A value of 0 will disable the timeout.  The default value is 30.
     #timeout = 30

     # If true, the server will validate its own certificate at startup.
     # Defaults to true.
     #tls_verify = true

     # If true, client certificates will be validated by the server;
     # clients without a valid certificate will be unable to connect.
     # By default, client certs are not checked.
     #tls_checkpeer = false

     # Path to a certificate authority bundle file in PEM format to use
     # instead of the system's default certificate authority database.
     #tls_cacert = /etc/ssl/sudo/cacert.pem

     # Path to the server's certificate file in PEM format.
     # Required for TLS connections.
     #tls_cert = /etc/ssl/sudo/certs/logsrvd_cert.pem

     # Path to the server's private key file in PEM format.
     # Required for TLS connections.
     #tls_key = /etc/ssl/sudo/private/logsrvd_key.pem

     # TLS cipher list (see "CIPHER LIST FORMAT" in the openssl-ciphers manual).
     # This setting is only effective if the negotiated protocol is TLS version
     # 1.2.  The default cipher list is HIGH:!aNULL.
     #tls_ciphers_v12 = HIGH:!aNULL

     # TLS cipher list if the negotiated protocol is TLS version 1.3.
     # The default cipher list is TLS_AES_256_GCM_SHA384.
     #tls_ciphers_v13 = TLS_AES_256_GCM_SHA384

     # Path to the Diffie-Hellman parameter file in PEM format.
     # If not set, the server will use the OpenSSL defaults.
     #tls_dhparams = /etc/ssl/sudo/logsrvd_dhparams.pem

     [relay]
     # The host name or IP address and port to send logs to in relay mode.
     # The syntax is identical to listen_address with the exception of
     # the wild card ('*') syntax.  When this setting is enabled, logs will
     # be relayed to the specified host instead of being stored locally.
     # This setting is not enabled by default.
     #relay_host = relayhost.dom.ain
     #relay_host = relayhost.dom.ain(tls)

     # The amount of time, in seconds, the server will wait for a connection
     # to the relay server to complete.  A value of 0 will disable the timeout.
     # The default value is 30.
     #connect_timeout = 30

     # The directory to store messages in before they are sent to the relay.
     # Messages are stored in wire format.
     # The default value is /var/log/sudo_logsrvd.
     #relay_dir = /var/log/sudo_logsrvd

     # The number of seconds to wait after a connection error before
     # making a new attempt to forward a message to a relay host.
     # The default value is 30.
     #retry_interval = 30

     # Whether to store the log before relaying it.  If true, enable store
     # and forward mode.  If false, the client connection is immediately
     # relayed.  Defaults to false.
     #store_first = true

     # If true, enable the SO_KEEPALIVE socket option on relay connections.
     # Defaults to true.
     #tcp_keepalive = true

     # The amount of time, in seconds, the server will wait for the relay to
     # respond.  A value of 0 will disable the timeout.  The default value is 30.
     #timeout = 30

     # If true, the server's relay certificate will be verified at startup.
     # The default is to use the value in the [server] section.
     #tls_verify = true

     # Whether to verify the relay's certificate for TLS connections.
     # The default is to use the value in the [server] section.
     #tls_checkpeer = false

     # Path to a certificate authority bundle file in PEM format to use
     # instead of the system's default certificate authority database.
     # The default is to use the value in the [server] section.
     #tls_cacert = /etc/ssl/sudo/cacert.pem

     # Path to the server's certificate file in PEM format.
     # The default is to use the certificate in the [server] section.
     #tls_cert = /etc/ssl/sudo/certs/logsrvd_cert.pem

     # Path to the server's private key file in PEM format.
     # The default is to use the key in the [server] section.
     #tls_key = /etc/ssl/sudo/private/logsrvd_key.pem

     # TLS cipher list (see "CIPHER LIST FORMAT" in the openssl-ciphers manual).
     # this setting is only effective if the negotiated protocol is TLS version
     # 1.2.  The default is to use the value in the [server] section.
     #tls_ciphers_v12 = HIGH:!aNULL

     # TLS cipher list if the negotiated protocol is TLS version 1.3.
     # The default is to use the value in the [server] section.
     #tls_ciphers_v13 = TLS_AES_256_GCM_SHA384

     # Path to the Diffie-Hellman parameter file in PEM format.
     # The default is to use the value in the [server] section.
     #tls_dhparams = /etc/ssl/sudo/logsrvd_dhparams.pem

     [iolog]
     # The top-level directory to use when constructing the path name for the
     # I/O log directory.  The session sequence number, if any, is stored here.
     #iolog_dir = /var/log/sudo-io

     # The path name, relative to iolog_dir, in which to store I/O logs.
     # It is possible for iolog_file to contain directory components.
     #iolog_file = %{seq}

     # If set, I/O logs will be compressed using zlib.  Enabling compression can
     # make it harder to view the logs in real-time as the program is executing.
     #iolog_compress = false

     # If set, I/O log data is flushed to disk after each write instead of
     # buffering it.  This makes it possible to view the logs in real-time
     # as the program is executing but reduces the effectiveness of compression.
     #iolog_flush = true

     # The group to use when creating new I/O log files and directories.
     # If iolog_group is not set, the primary group-ID of the user specified
     # by iolog_user is used.  If neither iolog_group nor iolog_user
     # are set, I/O log files and directories are created with group-ID 0.
     #iolog_group = wheel

     # The user to use when setting the user-ID and group-ID of new I/O
     # log files and directories.  If iolog_group is set, it will be used
     # instead of the user's primary group-ID.  By default, I/O log files
     # and directories are created with user and group-ID 0.
     #iolog_user = root

     # The file mode to use when creating I/O log files.  The file permissions
     # will always include the owner read and write bits, even if they are
     # not present in the specified mode.  When creating I/O log directories,
     # search (execute) bits are added to match the read and write bits
     # specified by iolog_mode.
     #iolog_mode = 0600

     # If disabled, sudo_logsrvd will attempt to avoid logging plaintext
     # password in the terminal input using passprompt_regex.
     #log_passwords = true

     # The maximum sequence number that will be substituted for the "%{seq}"
     # escape in the I/O log file.  While the value substituted for "%{seq}"
     # is in base 36, maxseq itself should be expressed in decimal.  Values
     # larger than 2176782336 (which corresponds to the base 36 sequence
     # number "ZZZZZZ") will be silently truncated to 2176782336.
     #maxseq = 2176782336

     # One or more POSIX extended regular expressions used to match
     # password prompts in the terminal output when log_passwords is
     # disabled.  Multiple passprompt_regex settings may be specified.
     #passprompt_regex = [Pp]assword[: ]*
     #passprompt_regex = [Pp]assword for [a-z0-9]+: *

     [eventlog]
     # Where to log accept, reject, exit, and alert events.
     # Accepted values are syslog, logfile, or none.
     # Defaults to syslog
     #log_type = syslog

     # Whether to log an event when a command exits or is terminated by a signal.
     # Defaults to false
     #log_exit = true

     # Event log format.
     # Currently only sudo-style event logs are supported.
     #log_format = sudo

     [syslog]
     # The maximum length of a syslog payload.
     # On many systems, syslog(3) has a relatively small log buffer.
     # IETF RFC 5424 states that syslog servers must support messages
     # of at least 480 bytes and should support messages up to 2048 bytes.
     # Messages larger than this value will be split into multiple messages.
     #maxlen = 960

     # The syslog facility to use for event log messages.
     # The following syslog facilities are supported: authpriv (if your OS
     # supports it), auth, daemon, user, local0, local1, local2, local3,
     # local4, local5, local6, and local7.
     #facility = authpriv

     # Syslog priority to use for event log accept messages, when the command
     # is allowed by the security policy.  The following syslog priorities are
     # supported: alert, crit, debug, emerg, err, info, notice, warning, none.
     #accept_priority = notice

     # Syslog priority to use for event log reject messages, when the command
     # is not allowed by the security policy.
     #reject_priority = alert

     # Syslog priority to use for event log alert messages reported by the
     # client.
     #alert_priority = alert

     # The syslog facility to use for server warning messages.
     # Defaults to daemon.
     #server_facility = daemon

     [logfile]
     # The path to the file-based event log.
     # This path must be fully-qualified and start with a '/' character.
     #path = /var/log/sudo.log

     # The format string used when formatting the date and time for
     # file-based event logs.  Formatting is performed via strftime(3) so
     # any format string supported by that function is allowed.
     #time_format = %h %e %T

SEE ALSO         top

     strftime(3), sudo.conf(5), sudoers(5), sudo(8), sudo_logsrvd(8)

AUTHORS         top

     Many people have worked on sudo over the years; this version
     consists of code written primarily by:

           Todd C. Miller

     See the CONTRIBUTORS.md file in the sudo distribution
     (https://www.sudo.ws/about/contributors/) for an exhaustive list of
     people who have contributed to sudo.

BUGS         top

     If you believe you have found a bug in sudo, you can submit a bug
     report at https://bugzilla.sudo.ws/

SUPPORT         top

     Limited free support is available via the sudo-users mailing list,
     see https://www.sudo.ws/mailman/listinfo/sudo-users to subscribe or
     search the archives.

DISCLAIMER         top

     sudo is provided “AS IS” and any express or implied warranties,
     including, but not limited to, the implied warranties of
     merchantability and fitness for a particular purpose are
     disclaimed.  See the LICENSE.md file distributed with sudo or
     https://www.sudo.ws/about/license/ for complete details.

COLOPHON         top

     This page is part of the sudo (execute a command as another user)
     project.  Information about the project can be found at
     https://www.sudo.ws/.  If you have a bug report for this manual
     page, see ⟨https://bugzilla.sudo.ws/⟩.  This page was obtained from
     the project's upstream Git repository
     ⟨https://github.com/sudo-project/sudo⟩ on 2022-12-17.  (At that
     time, the date of the most recent commit that was found in the
     repository was 2022-12-15.)  If you discover any rendering problems
     in this HTML version of the page, or you believe there is a better
     or more up-to-date source for the page, or you have corrections or
     improvements to the information in this COLOPHON (which is not part
     of the original manual page), send a mail to man-pages@man7.org

Sudo 1.9.12p1              September 13, 2022              Sudo 1.9.12p1