DESCRIPTION
-----------
-The http://lttng.org/[_Linux Trace Toolkit: next generation_] is an open
+The https://lttng.org/[_Linux Trace Toolkit: next generation_] is an open
source software package used for correlated tracing of the Linux kernel,
user applications, and user libraries.
option:--background option instead to keep the file descriptors
open.
-option:-g, option:--group='GROUP'::
+option:-g 'GROUP', option:--group='GROUP'::
Use 'GROUP' as Unix tracing group (default: `tracing`).
-option:-o, option:--output='PATH'::
+option:-o 'PATH', option:--output='PATH'::
Set base directory of written trace data to 'PATH'.
+
See the <<output-directory,Output directory>> section above for more
See the <<url-format,URL format>> section above for more information
about the syntax of the following options' 'URL' argument.
-option:-C, option:--control-port='URL'::
+option:-C 'URL', option:--control-port='URL'::
Listen to control data on URL 'URL' (default:
+tcp://{default_network_control_bind_address}:{default_network_control_port}+).
-option:-D, option:--data-port='URL'::
+option:-D 'URL', option:--data-port='URL'::
Listen to trace data on URL 'URL' (default:
+tcp://{default_network_data_bind_address}:{default_network_data_port}+).
-option:-L, option:--live-port='URL'::
+option:-L 'URL', option:--live-port='URL'::
Listen to LTTng live connections on URL 'URL'
(default:
+tcp://{default_network_viewer_bind_address}:{default_network_viewer_port}+).
ENVIRONMENT VARIABLES
---------------------
+`LTTNG_ABORT_ON_ERROR`::
+ Set to 1 to abort the process after the first error is encountered.
+
`LTTNG_NETWORK_SOCKET_TIMEOUT`::
Socket connection, receive and send timeout (milliseconds). A value
of 0 or -1 uses the timeout of the operating system (default).
`LTTNG_RELAYD_HEALTH`::
Path to relay daemon health's socket.
+`LTTNG_RELAYD_TCP_KEEP_ALIVE`::
+ Set to 1 to enable TCP keep-alive.
++
+The TCP keep-alive mechanism allows the detection of dead peers
+(man:lttng-sessiond(8)) in cases of unclean termination
+(for example, a hard reset) of a peer.
++
+Supported on Linux and Solaris only. The default behaviour of the TCP
+keep-alive mechanism is OS-specific.
++
+Search for `tcp_keepalive` in man:tcp(7) for more information.
+
+`LTTNG_RELAYD_TCP_KEEP_ALIVE_ABORT_THRESHOLD`::
+ The time threshold in seconds to abort a TCP connection after the keep-alive
+ probing mechanism has failed.
++
+Set to 0 or -1 to use the value chosen by the operating system (default).
++
+Supported on Solaris 11 only.
++
+Search for `tcp_keepalive_abort_threshold` in man:tcp(7) for more information.
+
+`LTTNG_RELAYD_TCP_KEEP_ALIVE_IDLE_TIME`::
+ Number of seconds a connection needs to be idle before TCP begins
+ sending out keep-alive probes.
++
+Set to 0 or -1 to use the value chosen by the operating system (default).
++
+Supported on Linux and Solaris 11 only.
++
+On Solaris{nbsp}11, the accepted values are -1, 0, and 10 to 864000.
++
+Search for `tcp_keepalive_time` and `tcp_keepalive_interval`
+in man:tcp(7) on Solaris 11 for more information.
+
+`LTTNG_RELAYD_TCP_KEEP_ALIVE_MAX_PROBE_COUNT`::
+ Maximum number of TCP keep-alive probes to send before giving up and
+ killing the connection if no response is obtained from the other end.
++
+Set to 0 or -1 to use the value chosen by the operating system (default).
++
+Supported on Linux only.
++
+Search for `tcp_keepalive_probes` in man:tcp(7) for more information.
+
+`LTTNG_RELAYD_TCP_KEEP_ALIVE_PROBE_INTERVAL`::
+ Number of seconds between TCP keep-alive probes.
++
+Set to 0 or -1 to use the value chosen by the operating system (default).
++
+Supported on Linux only.
++
+Search for `tcp_keepalive_intvl` in man:tcp(7) for more information.
+
FILES
-----