Config file format

Everything you ever wanted to know about the Butler SOS configuration file.

Either JSON or YAML notation can be used to create the configuration file, with file extensions of .json and .yaml/.yml, respectively.

YAML is strongly recommended, as it is easier to edit/read/understand compared to JSON.

The parameters in the config file are described below. All parameters must be defined in the config file - run time errors are likely to occur otherwise. The sample config file looks like this:

Sample config file

A few things to keep in mind:

  • Topic names (e.g. “Butler-SOS.logdb”) are case sensitive.
  • First time Butler SOS is started, a new InfluxDB database will be created, together with a default InfluxDB retention policy

Parameter Description
logLevel The level of details in the logs. Possible values are silly, debug, verbose, info, warn, error (in order of decreasing level of detail).
fileLogging true/false to enable/disable logging to disk file
logDirectory Subdirectory where log files are stored
enableLogDb Should Sense log db be queried for warnings/errors/info messages? true/false
pollingInterval How often to query log db. Milliseconds
queryPeriod How far back should log db be queried? Human readable, e.g. “5 minutes” (which is also the default value)
host IP or FQDN of server where Sense log db is running
port Port used by log db. 4432 unless changed during installation of Sense
qlogsReaderUser User to connect to log db as. “qlogs_reader” unless changed during installation of Sense
qlogsReaderPwd Password of above user
extractErrors Should error entries be extracted from log db? true/false
extractWarnings Should warning entries be extracted from log db? true/false
extractInfo Should info entries be extracted from log db? true/false.
NOTE: If info level logging is enabled, this will result in lots of messages being stored in Influxdb (at least for a busy Sense cluster).
clientCert Certificate file. Exported from QMC
clientCertKey Certificate key file. Exported from QMC
clientCertCA Root certificate for above certificate files. Exported from QMC
enableMQTT Should health metrics be sent to MQTT? true/false
brokerHost IP or FQDN of MQTT broker
brokerPort Broker port
baseTopic The topic to which messages will be posted. Should end with /. For example butler-sos/
enableInfluxdb Should health metrics be stored in Influxdb? true/false
hostIP IP or FQDN of Influxdb server
hostPort Port where Influxdb server is listening. Useful if Influxdb for some reason is not using its standard port of 8086
auth.enable Enable if data is to be stored in a password protected Influxdb database
auth.username Influxdb username
auth.password Influxdb password
dbName Database namne in Influxdb to which health metrics will be stored. Database will be created if it does not already exist when Butler SOS is started
Name of default retention policy that will be created in InfluxDB database, when that database is created during first execution of Butler SOS
Duration during which metrics are kept in InfluxDB. After the duration has passed, InfluxDB will purge all data older than duration from the database. See InfluxDB docs for details on syntax.
Should a list of currently active Sense apps be stored in Influxdb? true/false
Should a list of Sense apps opened in a user session be stored in Influxdb? true/false
Should a list of Sense apps loaded into memory (some apps might not currently be associated with a user session) be stored in Influxdb? true/false
enableSessionExtract Influxdb password
pollingInterval Influxdb password
pollingInterval How often to query the Sense healthcheck API
serverTagsDefinition List of tags to add to each server when storing the data in Influxdb. All tags defined here MUST be present in each server’s definition section further down in the config file!
servers List of what servers to monitor. For each server a set of properties MUST be defined.
FQDN of server. Domain should match that of the certificate exported from QMC - otherwise certificate warnings may appear. NOTE: You need to specify the port too - should be :4747 unless it’s been changed from default value (very unusual to change this).
Human friendly server name
Human friendly server description
Server’s name as it appears in the process_host field log db. This is needed in order to link entries in logdb to the specific server at hand. See note below too!
Control whether user session data should be retrieved for this server
Host and port from which to retrieve user session data. Usually on the form
A list of key-value pairs. Use to specify for which virtual proxies on this server user session data should be retrieved.
serverTags A list of key-value pairs. Use to provide more metadata for servers. Can then (among other things) be used to created more advanced Grafana dashboards.

The Butler-SOS.serversToMonitor.servers.logDbHost property can be tricky to get right. Easiest way to get the correct value is to look in the Nodes section in the QMC. In the Host name column you find the host names of the various nodes. logDbHost should be set to the first part of each host name:

Log db host name