CLUSH.CONF(5) - Linux man page online | File formats

Configuration file for clush.

CLUSH.CONF(5) ClusterShell User Manual CLUSH.CONF(5)


clush.conf - Configuration file for clush


clush(1) obtains configuration options from the following sources in the following order: 1. command-line options 2. user configuration file ($XDG_CONFIG_HOME/clustershell/clush.conf) 3. local pip user installation ($HOME/.local/etc/clustershell/clush.conf) 4. system-wide configuration file (/etc/clustershell/clush.conf) For each parameter, the first obtained value will be used. The configuration file has a format in the style of RFC 822 composed of one main section: Main Program options definition [Main] Configuration parameters of the Main section are described below. fanout Size of the sliding window (fanout) of active commands for clush. This fanout is used to avoid too many concurrent connections and to conserve resources on the ini‐ tiating hosts. In tree mode, the same fanout value is used on the head node and on each gateway (the fanout value is propagated). That is, if the fanout is 16 on the head node, each gateway will initate up to 16 connections to their target nodes at the same time. connect_timeout Timeout in seconds to allow a connection to establish. This parameter is passed to ssh. If set to 0, no timeout occurs. command_timeout Timeout in seconds to allow a command to complete since the connection has been established. This parameter is passed to ssh. In addition, the ClusterShell library ensures that any commands complete in less than ( connect_timeout + com‐ mand_timeout ). If set to 0, no timeout occurs. color Whether to use ANSI colors to surround node or nodeset prefix/header with escape sequences to display them in color on the terminal. Valid arguments are never, always or auto (which use color if standard output/error refer to a terminal). Col‐ ors are set to [34m (blue foreground text) for stdout and [31m (red foreground text) for stderr, and cannot be modified. fd_max Maximum number of open file descriptors permitted per clush process (soft resource limit for open files). This limit can never exceed the system (hard) limit. The fd_max (soft) and system (hard) limits should be high enough to run clush, although their values depend on your fanout value. history_size Set the maximum number of history entries saved in the GNU readline history list. Negative values imply unlimited history file size. node_count Should clush display additional (node count) information in buffer header? (yes/no) verbosity Set the verbosity level: 0 (quiet), 1 (default), 2 (verbose) or more (debug). ssh_user Set the ssh user to use for remote connection (default is to not specify). ssh_path Set the ssh binary path to use for remote connection (default is ssh). ssh_options Set additional options to pass to the underlying ssh command. scp_path Set the scp binary path to use for remote copy (default is scp). scp_options Set additional options to pass to the underlying scp command. If not specified, ssh_options are used instead. rsh_path Set the rsh binary path to use for remote connection (default is rsh). You could easily use mrsh or krsh by simply changing this value. rcp_path Same a rsh_path for rcp command. (Default is rcp) rsh_options Set additional options to pass to the underlying rsh/rcp command.


Simple configuration file. clush.conf [Main] fanout: 128 connect_timeout: 15 command_timeout: 0 history_size: 100 color: auto fd_max: 10240 node_count: yes


/etc/clustershell/clush.conf System-wide clush configuration file. $XDG_CONFIG_HOME/clustershell/clush.conf User configuration file for clush. If $XDG_CONFIG_HOME is not defined, $HOME/.con‐ fig/clustershell/clush.conf is used instead. $HOME/.local/etc/clustershell/clush.conf Local user configuration file for clush (default installation for pip --user) ~/.clush.conf Deprecated per-user clush configuration file.


As of ClusterShell version 1.3, the External section has been removed from clush.conf. External commands whose outputs were used by clush (-a, -g, -X) are now handled by the library itself and defined in groups.conf(5).


clush(1), groups.conf(5).


Stephane Thiell, <>
GNU Lesser General Public License version 2.1 or later (LGPLv2.1+)
1.8 2017-10-23 CLUSH.CONF(5)
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clush.conf(5) referred by clush(1)
refer to clush(1) | groups.conf(5)
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