Difference between revisions of "OS4X Core environment variables"

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Some environment variables are created and/or set by all OS4X binaries. These variables are:  
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Environment variables are created and/or set by all OS4X binaries, which values are based on the configuration of OS4X. These variables are:  
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*<code>OS4X_CFGFILE</code>: OS4X main configuration file (absolute path information)  
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*<code>OS4X_CFGFILE</code>: [[OS4X Core main configuration file|OS4X main configuration file (absolute path information)]]
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*<code>OS4X_IN_DIR</code>: incoming data directory  
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*<code>OS4X_IN_DIR</code>: [[OS4X_Core_configuration#data_incoming_directory|incoming data directory]]
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*<code>OS4X_OUT_DIR</code>: outgoing data directory  
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*<code>OS4X_OUT_DIR</code>: [[OS4X_Core_configuration#data_outgoing_directory|outgoing data directory]]
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*<code>OS4X_TMP_DIR</code>: temporary data directory  
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*<code>OS4X_TMP_DIR</code>: [[OS4X_Core_configuration#temporary_directory|temporary data directory]]
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*<code>OS4X_BIN_DIR</code>: binary program directory
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*<code>OS4X_BIN_DIR</code>: [[OS4X_Core_configuration#binary_installation_directory|binary program directory]]
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*<code>OS4X_SCRIPT_DIR</code>: script installation directory
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*<code>OS4X_SCRIPT_DIR</code>: [[OS4X_Core_configuration#script_installation_directory|script installation directory]]
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*<code>OS4X_BACKUP_DIR</code>: backup directory
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*<code>OS4X_BACKUP_DIR</code>: [[OS4X_Core_configuration#database_backup_directory|backup directory]]
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*<code>RAND_FILE</code>: entropy file for OFTP2 needs  
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*<code>RAND_FILE</code>: [[OS4X_Core_configuration#Entropy_file_for_random_data|entropy file for OFTP2 needs]]
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*<code>OPENSSL_BIN</code>: absolute path to openSSL binary  
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*<code>OPENSSL_BIN</code>: [[OS4X_Core_configuration#absolute_path_to_.27openssl.27|absolute path to openSSL binary]]
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*<code>RRDTOOL_BIN</code>: absolute path to RRDtools binary  
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*<code>RRDTOOL_BIN</code>: [[OS4X_Core_configuration#absolute_path_to_.27rrdtool.27|absolute path to RRDtools binary]]
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*<code>RRDB_DATAPATH</code>: RRD data path
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*<code>RRDB_DATAPATH</code>: [[OS4X_Core_configuration#RRDB_data_path|RRD data path]]
 
*<code>OS4X_WEBGUI_DIR</code>: web interface installation directory
 
*<code>OS4X_WEBGUI_DIR</code>: web interface installation directory
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*<code>JAVA_BIN</code>: configured path to the Java runtime (JRE) binary
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*<code>CA_FILE</code>: [[OS4X_Core_configuration#root_certificate_file_.26_root_certificate_path|configured absolute path to the root certificate file]]
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*<code>CA_PATH</code>: [[OS4X_Core_configuration#root_certificate_file_.26_root_certificate_path|configured absolute path to the root certificate directory]]
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The following environment variables are extracted form the global OS4X configuration file (default: <code>/etc/os4x.conf</code>):
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*<code>OS4X_DB_HOST</code>
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*<code>OS4X_DB_USER</code>
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*<code>OS4X_DB_PWD</code>
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*<code>OS4X_DB_NAME</code>
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*<code>OS4X_DB_SOCKET</code>
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*<code>OS4X_DB_PORT</code>
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*<code>OS4X_DB_TYPE</code>: either "<code>mysql</code>", "<code>DB2</code>", "<code>sqlite</code>" or "<code>POSTGRESQL</code>"
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Beginning from OS4X build 2019-08-09, the following variable exists:
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*<code>OS4X_DB_PREFIX</code>: database table prefix
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Beginning from OS4X build 2020-12-08, the following variable exists:
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*<code>OS4X_DB_SCHEMA</code>: database schema name (only used in PostgreSQL)
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All processes started by OS4X (event scripts, plugins, etc.) have access to these environment variables.  
 
All processes started by OS4X (event scripts, plugins, etc.) have access to these environment variables.  
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*you may start OS4X programs in a shell where this variable is set without using the parameter "<code>-C</code>" for all binaries (because the environment variable points to the correct position of the configfile)  
 
*you may start OS4X programs in a shell where this variable is set without using the parameter "<code>-C</code>" for all binaries (because the environment variable points to the correct position of the configfile)  
 
*all subsequent processes started by OS4X (like event scripts) don't have to bother about the given configfile (like plugins of OS4X Enterprise).
 
*all subsequent processes started by OS4X (like event scripts) don't have to bother about the given configfile (like plugins of OS4X Enterprise).
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== Database performance benchmarking ==
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Available in OS4X 3 Core, an environment variable can be set to log all database access timing information into that given file:
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OS4X_DB_BENCHMARKLOG
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You can set this variable to an absolute filename where OS4X logs all innformation (example: "ksh" or "bash"):
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export OS4X_DB_BENCHMARKLOG=/tmp/db2perf.log
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This file logs the connect and query time for every single database access, resulting in a fast growing file. The content if this file looks like this (using DB2 database abstraction layer, others like MySQL start with "<code>MySQL</code>"):
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<pre>
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DB2 connect: 0.052482 seconds
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DB2 SQL query: 0.126631 seconds
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DB2 connect: 0.032447 seconds
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DB2 SQL query: 0.004983 seconds
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DB2 connect: 0.029555 seconds
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DB2 SQL query: 0.004500 seconds
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DB2 connect: 0.031012 seconds
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DB2 SQL query: 0.001324 seconds
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</pre>

Latest revision as of 20:38, 8 December 2020

Environment variables are created and/or set by all OS4X binaries, which values are based on the configuration of OS4X. These variables are:

The following environment variables are extracted form the global OS4X configuration file (default: /etc/os4x.conf):

  • OS4X_DB_HOST
  • OS4X_DB_USER
  • OS4X_DB_PWD
  • OS4X_DB_NAME
  • OS4X_DB_SOCKET
  • OS4X_DB_PORT
  • OS4X_DB_TYPE: either "mysql", "DB2", "sqlite" or "POSTGRESQL"

Beginning from OS4X build 2019-08-09, the following variable exists:

  • OS4X_DB_PREFIX: database table prefix

Beginning from OS4X build 2020-12-08, the following variable exists:

  • OS4X_DB_SCHEMA: database schema name (only used in PostgreSQL)


All processes started by OS4X (event scripts, plugins, etc.) have access to these environment variables. The environment variable "OS4X_CFGFILE" points to the absolute path to the OS4X main configuration file. This has two effects:

  • you may start OS4X programs in a shell where this variable is set without using the parameter "-C" for all binaries (because the environment variable points to the correct position of the configfile)
  • all subsequent processes started by OS4X (like event scripts) don't have to bother about the given configfile (like plugins of OS4X Enterprise).

Database performance benchmarking

Available in OS4X 3 Core, an environment variable can be set to log all database access timing information into that given file: 

OS4X_DB_BENCHMARKLOG

You can set this variable to an absolute filename where OS4X logs all innformation (example: "ksh" or "bash"): 

export OS4X_DB_BENCHMARKLOG=/tmp/db2perf.log

This file logs the connect and query time for every single database access, resulting in a fast growing file. The content if this file looks like this (using DB2 database abstraction layer, others like MySQL start with "MySQL"): 

DB2 connect: 0.052482 seconds
DB2 SQL query: 0.126631 seconds
DB2 connect: 0.032447 seconds
DB2 SQL query: 0.004983 seconds
DB2 connect: 0.029555 seconds
DB2 SQL query: 0.004500 seconds
DB2 connect: 0.031012 seconds
DB2 SQL query: 0.001324 seconds
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