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.TH "SCMASTER" "1" "Sep 22, 2025" "6.9.0" "SeisComP"
.SH NAME
scmaster \- SeisComP Documentation
.sp
\fBThe messaging system\fP
.SH DESCRIPTION
.sp
scmaster is the implementation of the \fI\%messaging\fP
mediator.
.SH MESSAGE GROUPS
.sp
scmaster provides the \fI\%message groups\fP\&. Configure
.INDENT 0.0
.IP \(bu 2
\fI\%defaultGroups\fP: Add the groups which can be used by all queues.
.IP \(bu 2
\fI\%queues.$name.groups\fP: Set all groups which are used by the given
queue. You may inherit \fI\%defaultGroups\fP, e.g.:
.INDENT 2.0
.INDENT 3.5
.sp
.nf
.ft C
queues.production.groups = ${defaultGroups},L1PICK
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
\fBWARNING:\fP
.INDENT 2.0
.INDENT 3.5
Setting any value without inheriting \fI\%defaultGroups\fP ignores all
values of \fI\%defaultGroups\fP\&.
.UNINDENT
.UNINDENT
.UNINDENT
.SH QUEUES
.sp
scmaster provides \fIqueues\fP for separating the processing.
Typically, the default queue \fIproduction\fP is used. To add new queues
.INDENT 0.0
.IP 1. 3
Define a new queue by adding a new profile with some name,
.IP 2. 3
Configure the profile parameters \fBqueues.$name.*\fP,
.IP 3. 3
Register the queue in \fI\%queues\fP\&.
.UNINDENT
.SH SCHEME
.sp
scmaster provides unsecured and secured connection which is addressed by the
scheme values \fIscmp\fP and \fIscmps\fP, respectively, in \fI\%connection.server\fP
when connecting to the messaging.
Read the \fI\%concepts section\fP for more details. \fIscmps\fP
is in use when configuring \fI\%interface.ssl.bind\fP\&.
.SH DATABASE ACCESS
.sp
scmaster reads from and writes to the database and reports the database connection
to the clients of the messaging system (compare with the \fI\%concepts section\fP).
.sp
The database is configured per queue.
.SS Single Machine
.sp
When running all \fISeisComP\fP modules on a single machine, the read and write
parameters are typically configured with \fIlocalhost\fP as a \fIhost name\fP\&.
.sp
Example:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
queues.production.processors.messages.dbstore.read = sysop:sysop@localhost/seiscomp
queues.production.processors.messages.dbstore.write = sysop:sysop@localhost/seiscomp
.ft P
.fi
.UNINDENT
.UNINDENT
.SS Multiple Machines
.sp
If the clients are located on machines different from the messaging, the
\fIhost name\fP of the read parameter
must be available on the client machine and the client machine must be able to
connect to the host with its name. If the database is on the same machine as the
messaging, the \fIhost name\fP of the write connection typically remains \fIlocalhost\fP\&.
.sp
Example for connecting clients on computerB to the messaging on computerA (compare
with the \fI\%concepts section\fP).
.INDENT 0.0
.IP \(bu 2
Configuration of scmaster on computerA:
.INDENT 2.0
.INDENT 3.5
.sp
.nf
.ft C
queues.production.processors.messages.dbstore.read = sysop:sysop@computerA/seiscomp
queues.production.processors.messages.dbstore.write = sysop:sysop@localhost/seiscomp
.ft P
.fi
.UNINDENT
.UNINDENT
.IP \(bu 2
Global configuration of client on computerB:
.INDENT 2.0
.INDENT 3.5
.sp
.nf
.ft C
connection.server = computerA/production
.ft P
.fi
.UNINDENT
.UNINDENT
.UNINDENT
.SS Database Proxy
.sp
scmaster can accept database requests and forward results to clients without
exposing the underlying database. That allows clients to connect to the database
of a particular queue via the Websocket HTTP protocol. No specific database
plugin is required at the client which reduces the complexity of configuration.
.sp
Be aware that due to the nature of a proxy which is another layer on top of the
actual database connection the performance is not as high as direct database
access.
.sp
To let scmaster return the proxy address of the database connection, set
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
queues.production.processors.messages.dbstore.proxy = true
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
in the configuration file.
.SH ACCESS CONTROL
.sp
scmaster does not provide any built\-in access control to connecting clients.
The only exception is the possibility to verify client certificates against
the server certificate if SSL is enabled.
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
interface.ssl.verifyPeer = true
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
It is required that the client certificate is signed by the server certificate
otherwise the client connection will be rejected.
.SH MODULE CONFIGURATION
.nf
\fBetc/defaults/global.cfg\fP
\fBetc/defaults/scmaster.cfg\fP
\fBetc/global.cfg\fP
\fBetc/scmaster.cfg\fP
\fB~/.seiscomp/global.cfg\fP
\fB~/.seiscomp/scmaster.cfg\fP
.fi
.sp
.sp
scmaster inherits \fI\%global options\fP\&.
.INDENT 0.0
.TP
.B defaultGroups
Default: \fBAMPLITUDE, PICK, LOCATION, MAGNITUDE, FOCMECH, EVENT, QC, PUBLICATION, GUI, INVENTORY, CONFIG, LOGGING, SERVICE_REQUEST, SERVICE_PROVIDE, STATUS_GROUP\fP
.sp
Type: \fIlist:string\fP
.sp
The default set of message groups for each queue. Only used
if a queues group list is unset (note: empty is not unset).
.UNINDENT
.INDENT 0.0
.TP
.B queues
Default: \fBproduction, playback\fP
.sp
Type: \fIlist:string\fP
.sp
Enable messaging queues defined as profile in queues. The profile
names are the final queue names.
.UNINDENT
.sp
\fBNOTE:\fP
.INDENT 0.0
.INDENT 3.5
\fBinterface.*\fP
\fIControl the messaging interface. The default protocol is\fP
\fI\(dqscmp\(dq but \(dqscmps\(dq (secure protocol) is\fP
\fIused when valid SSL certificate and key are configured.\fP
.UNINDENT
.UNINDENT
.INDENT 0.0
.TP
.B interface.bind
Default: \fB0.0.0.0:18180\fP
.sp
Type: \fIipbind\fP
.sp
Local bind address and port of the messaging system.
0.0.0.0:18180 accepts connections from all clients,
127.0.0.1:18180 only from localhost.
.UNINDENT
.INDENT 0.0
.TP
.B interface.acl
Type: \fIlist:ipmask\fP
.sp
The IP access control list for clients which are allowed
to connect to the interface. Separate each IP with a space
and put the entire list in double quotes, e.g.
\(dq127.0.0.1 192.168.1.2 192.168.0.0/16\(dq.
.UNINDENT
.INDENT 0.0
.TP
.B interface.socketPortReuse
Default: \fBtrue\fP
.sp
Type: \fIboolean\fP
.sp
SO_REUSEADDR socket option for the TCP listening socket.
.UNINDENT
.sp
\fBNOTE:\fP
.INDENT 0.0
.INDENT 3.5
\fBinterface.ssl.*\fP
\fISSL encryption is used if key and certificate are configured.\fP
.UNINDENT
.UNINDENT
.INDENT 0.0
.TP
.B interface.ssl.bind
Default: \fB0.0.0.0:\-1\fP
.sp
Type: \fIipbind\fP
.sp
Additional local bind address and port of the messaging
system in case SSL encryption is active.
.UNINDENT
.INDENT 0.0
.TP
.B interface.ssl.acl
Type: \fIlist:ipmask\fP
.sp
The IP access control list for clients which are allowed
to connect to the interface. See interface.acl for
further details.
.UNINDENT
.INDENT 0.0
.TP
.B interface.ssl.socketPortReuse
Default: \fBtrue\fP
.sp
Type: \fIboolean\fP
.sp
SO_REUSEADDR socket option for the TCP listening socket.
.UNINDENT
.INDENT 0.0
.TP
.B interface.ssl.key
Type: \fIpath\fP
.UNINDENT
.INDENT 0.0
.TP
.B interface.ssl.certificate
Type: \fIpath\fP
.UNINDENT
.INDENT 0.0
.TP
.B interface.ssl.verifyPeer
Default: \fBfalse\fP
.sp
Type: \fIboolean\fP
.sp
If enabled then the certificate of a connecting client
is verified against the servers certificate. It is
required that the client certificate is signed by the
server certificate otherwise the connection is refused.
.UNINDENT
.sp
\fBNOTE:\fP
.INDENT 0.0
.INDENT 3.5
\fBqueues.*\fP
\fISet the parameters for each messaging queue. The queues are used\fP
\fIwhen listed in the \(dqqueues\(dq parameter. Several queues\fP
\fIcan be used in parallel. For queues with without databases leave\fP
\fIthe processor parameters empty.\fP
.UNINDENT
.UNINDENT
.sp
\fBNOTE:\fP
.INDENT 0.0
.INDENT 3.5
\fBqueues.$name.*\fP
$name is a placeholder for the name to be used and needs to be added to \fI\%queues\fP to become active.
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
queues = a,b
queues.a.value1 = ...
queues.b.value1 = ...
# c is not active because it has not been added
# to the list of queues
queues.c.value1 = ...
.ft P
.fi
.UNINDENT
.UNINDENT
.UNINDENT
.UNINDENT
.INDENT 0.0
.TP
.B queues.$name.groups
Type: \fIlist:string\fP
.sp
Define the list of message groups added to the queue.
If unset, then the defaultGroups will be used.
A queue will always add the default group \(dqSTATUS_GROUP\(dq.
This parameter overrides defaultGroups.
.UNINDENT
.INDENT 0.0
.TP
.B queues.$name.acl
Default: \fB0.0.0.0/0\fP
.sp
Type: \fIlist:ipmask\fP
.sp
The IP access control list for clients which are allowed
to join the queue. See interface.acl for further details.
.UNINDENT
.INDENT 0.0
.TP
.B queues.$name.maximumPayloadSize
Default: \fB1048576\fP
.sp
Type: \fIint\fP
.sp
Unit: \fIB\fP
.sp
The maximum size in bytes of a message to be accepted.
Clients which send larger messages will be disconnected.
The default is 1MB.
.UNINDENT
.INDENT 0.0
.TP
.B queues.$name.plugins
Type: \fIlist:string\fP
.sp
List of plugins required by this queue. This is just a
convenience parameter to improve configurations
readability. The plugins can also be added to the
global list of module plugins.
.sp
Example: dbstore
.UNINDENT
.INDENT 0.0
.TP
.B queues.$name.processors.messages
Type: \fIstring\fP
.sp
Interface name. For now, use \(dqdbstore\(dqto
use a database.
.sp
Use empty for testing or playbacks without a database.
.UNINDENT
.sp
\fBNOTE:\fP
.INDENT 0.0
.INDENT 3.5
\fBqueues.$name.processors.messages.dbstore.*\fP
\fIDefine the database connection parameters.\fP
.UNINDENT
.UNINDENT
.INDENT 0.0
.TP
.B queues.$name.processors.messages.dbstore.driver
Type: \fIstring\fP
.sp
Selected the database driver to use.
Database drivers are available through plugins.
The default plugin is dbmysql which supports
the MYSQL database server. It is activated
with the core.plugins parameter.
.UNINDENT
.INDENT 0.0
.TP
.B queues.$name.processors.messages.dbstore.read
Type: \fIstring\fP
.sp
Set the database read connection which is
reported to clients that connect to this server.
If a remote setup should be implemented,
ensure that the hostname is reachable from
the remote computer.
.UNINDENT
.INDENT 0.0
.TP
.B queues.$name.processors.messages.dbstore.write
Type: \fIstring\fP
.sp
Set the database write connection which is
private to scmaster.
A separate write connection enables different
permissions on the database level for scmaster
and clients.
.UNINDENT
.INDENT 0.0
.TP
.B queues.$name.processors.messages.dbstore.proxy
Default: \fBfalse\fP
.sp
Type: \fIboolean\fP
.sp
If enabled then the database connection as configured
in \(aqread\(aq is not being returned to the client
but the URL \(dqproxy://\(dq. This URL
tells the client to open the database via the
websocket proxy at the messaging address,
e.g. http://localhost/production/db. The same
hostname and queue must be used as for the
initial messaging connection.
.UNINDENT
.INDENT 0.0
.TP
.B queues.$name.processors.messages.dbstore.strictVersionMatch
Default: \fBtrue\fP
.sp
Type: \fIboolean\fP
.sp
If enabled, the plugin will check the database
schema version and refuse to start if the
version doesn\(aqt match the latest version.
If disabled and the an object needs to be
stored, which is incompatible with the
database schema, this object is lost.
Leave this option enabled unless you know
exactly what are you doing and what the
consequences are.
.UNINDENT
.INDENT 0.0
.TP
.B http.filebase
Default: \fB@DATADIR@/scmaster/http/\fP
.sp
Type: \fIpath\fP
.sp
The directory served by the http server at staticPath.
.UNINDENT
.INDENT 0.0
.TP
.B http.staticPath
Default: \fB/\fP
.sp
Type: \fIstring\fP
.sp
The URL path at which html files and assets are available.
All files under filebase will be served at this URL path.
.UNINDENT
.INDENT 0.0
.TP
.B http.brokerPath
Default: \fB/\fP
.sp
Type: \fIstring\fP
.sp
The URL path at which the broker websocket is available.
.UNINDENT
.SH COMMAND-LINE OPTIONS
.sp
\fBscmaster [options]\fP
.SS Generic
.INDENT 0.0
.TP
.B \-h, \-\-help
Show help message.
.UNINDENT
.INDENT 0.0
.TP
.B \-V, \-\-version
Show version information.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-config\-file arg
Use alternative configuration file. When this option is
used the loading of all stages is disabled. Only the
given configuration file is parsed and used. To use
another name for the configuration create a symbolic
link of the application or copy it. Example:
scautopick \-> scautopick2.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-plugins arg
Load given plugins.
.UNINDENT
.INDENT 0.0
.TP
.B \-D, \-\-daemon
Run as daemon. This means the application will fork itself
and doesn\(aqt need to be started with &.
.UNINDENT
.SS Verbosity
.INDENT 0.0
.TP
.B \-\-verbosity arg
Verbosity level [0..4]. 0:quiet, 1:error, 2:warning, 3:info,
4:debug.
.UNINDENT
.INDENT 0.0
.TP
.B \-v, \-\-v
Increase verbosity level (may be repeated, eg. \-vv).
.UNINDENT
.INDENT 0.0
.TP
.B \-q, \-\-quiet
Quiet mode: no logging output.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-component arg
Limit the logging to a certain component. This option can
be given more than once.
.UNINDENT
.INDENT 0.0
.TP
.B \-s, \-\-syslog
Use syslog logging backend. The output usually goes to
/var/lib/messages.
.UNINDENT
.INDENT 0.0
.TP
.B \-l, \-\-lockfile arg
Path to lock file.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-console arg
Send log output to stdout.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-debug
Execute in debug mode.
Equivalent to \-\-verbosity=4 \-\-console=1 .
.UNINDENT
.INDENT 0.0
.TP
.B \-\-log\-file arg
Use alternative log file.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-print\-component arg
For each log entry print the component right after the
log level. By default the component output is enabled
for file output but disabled for console output.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-trace
Execute in trace mode.
Equivalent to \-\-verbosity=4 \-\-console=1 \-\-print\-component=1
\-\-print\-context=1 .
.UNINDENT
.SS Wired
.INDENT 0.0
.TP
.B \-\-bind arg
The non\-encrypted bind address. Format [ip:]port
.UNINDENT
.INDENT 0.0
.TP
.B \-\-sbind arg
The encrypted bind address. Format: [ip:]port
.UNINDENT
.SH AUTHOR
gempa GmbH, GFZ Potsdam
.SH COPYRIGHT
gempa GmbH, GFZ Potsdam
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