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See this documentation 

Charts

Data Sources

{{/usr/local/omk/conf/data_

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sources.json}} defines the data sources that the system will make available to the charts.  Currently only SQL external data sources are supported.  The default configuration in data_sources.json file ships with examples for MSSQL and MySQL servers. Here is an example a data source definition: 

Code Block
{
         "name" : "mssql_example",  # name used to access this data source in charts.json
         "type" : "sql", # fixed, no other types are currently available
         "data_models" : [ "sql_query" ], # also fixed.
         "parameters" : {
            "scheme" : "dbi", # fixed
            "driver" : "ODBC:DRIVER=FreeTDS", # dbi options that have been installed are available, only MSSQL and MySQL are tested
            "host" : "mani.opmantek.com", # SQL server host/ip
            "port" : "1433", # port SQL can be found on
            "database_name" : "testdb", # database to pull data from
            "username" : "sa", # username
            "password" : "password" #password
         }
},

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