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environment-variables.md

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Environment variables

General

  • TZ: The timezone assigned to the container (default UTC)
  • PUID: LibreNMS user id (default 1000)
  • PGID: LibreNMS group id (default 1000)
  • MEMORY_LIMIT: PHP memory limit (default 256M)
  • UPLOAD_MAX_SIZE: Upload max size (default 16M)
  • OPCACHE_MEM_SIZE: PHP OpCache memory consumption (default 128)
  • REAL_IP_FROM: Trusted addresses that are known to send correct replacement addresses (default 0.0.0.0/32)
  • REAL_IP_HEADER: Request header field whose value will be used to replace the client address (default X-Forwarded-For)
  • LOG_IP_VAR: Use another variable to retrieve the remote IP address for access log_format on Nginx. (default remote_addr)

(Distributed) Poller

  • LIBRENMS_POLLER_THREADS: Threads that poller-wrapper.py runs (default 16)
  • LIBRENMS_POLLER_INTERVAL: Interval in minutes at which poller-wrapper.py runs (defaults to 5) docs
  • LIBRENMS_DISTRIBUTED_POLLER_ENABLE: Enable distributed poller functionality
  • LIBRENMS_DISTRIBUTED_POLLER_NAME: Optional name of poller (defaults to hostname)
  • LIBRENMS_DISTRIBUTED_POLLER_GROUP: By default, all hosts are shared and have the poller_group = 0. To pin a device to a poller, set it to a value greater than 0 and set the same value here. One can also specify a comma separated string of poller groups. The poller will then poll devices from any of the groups listed. docs
  • LIBRENMS_DISTRIBUTED_POLLER_MEMCACHED_HOST: Memcached server for poller synchronization (Defaults to $MEMCACHED_HOST)
  • LIBRENMS_DISTRIBUTED_POLLER_MEMCACHED_PORT: Port of memcached server (Defaults to $MEMCACHED_PORT)

Cron

⚠️ Only used if you enabled and run a sidecar cron container

  • SIDECAR_CRON: Set to 1 to enable sidecar cron mode for this container (default 0)
  • LIBRENMS_CRON_DISCOVERY_ENABLE: Enable LibreNMS discovery for this container cronjobs (default true)
  • LIBRENMS_CRON_DAILY_ENABLE: Enable LibreNMS daily script for this container cronjobs (default true)
  • LIBRENMS_CRON_ALERTS_ENABLE: Enable LibreNMS alerts generation for this container cronjobs (default true)
  • LIBRENMS_CRON_BILLING_ENABLE: Enable LibreNMS billing polling for this container cronjobs (default true)
  • LIBRENMS_CRON_BILLING_CALCULATE_ENABLE: Enable LibreNMS billing for this container cronjobs (default true)
  • LIBRENMS_CRON_CHECK_SERVICES_ENABLE: Enable LibreNMS service checks for this container cronjobs (default true)
  • LIBRENMS_CRON_POLLER_ENABLE: Enable LibreNMS polling for this container cronjobs (default true)
  • LIBRENMS_CRON_SNMPSCAN_ENABLE: Enable LibreNMS SNMP network scanning for this container cronjobs (default false)
  • LIBRENMS_CRON_SNMPSCAN_INTERVAL: SNMP network scanning cron interval (daily, in "Minute Hour", default 5 0)
  • LIBRENMS_CRON_SNMPSCAN_NETS: Networks to scan for SNMP network scanning, in CIDR notation. Multiple networks can be specified separated by a comma. If this is not set the default is to scan networks defined in $config['nets']
  • LIBRENMS_CRON_SNMPSCAN_THREADS: SNMP network scanning threads to use (default 32)
  • LIBRENMS_CRON_SNMPSCAN_LOGFILE: SNMP network scanning cron log file (default /dev/null)

Syslog-ng

⚠️ Only used if you enabled and run a sidecar syslog-ng container

  • SIDECAR_SYSLOGNG: Set to 1 to enable sidecar syslog-ng mode for this container (default 0)

Database

  • DB_HOST: MySQL database hostname / IP address
  • DB_PORT: MySQL database port (default 3306)
  • DB_NAME: MySQL database name (default librenms)
  • DB_USER: MySQL user (default librenms)
  • DB_PASSWORD: MySQL password (default librenms)
  • DB_TIMEOUT: Time in seconds after which we stop trying to reach the MySQL server (useful for clusters, default 60)

Misc

  • LIBRENMS_SNMP_COMMUNITY: This container's SNMP v2c community string (default librenmsdocker)
  • MEMCACHED_HOST: Hostname / IP address of a Memcached server
  • MEMCACHED_PORT: Port of the Memcached server (default 11211)
  • RRDCACHED_HOST: Hostname / IP address of a RRDcached server
  • RRDCACHED_PORT: Port of the RRDcached server (default 42217)