Manual Chapter : Tools for Geo-Redundancy

Applies To:

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BIG-IP LTM

  • 16.0.0, 15.1.0, 15.0.1
Manual Chapter

Tools for Geo-Redundancy

BIG-IP command line interface (CLI) tools

Access the following tools from the BIG-IP CLI:
  • bigstart
    : For control and status check on the daemons/process (TMM, Kafka, ZooKeeper, MirrorMaker).
  • diadb
    : To display and delete Diameter persistence entries.

Geo-Redundancy specific BIG-IP CLI tools

gepdb
: To display the status of Geo-redundancy setup, enforce manual reload, and display Geo-Redundancy iRule tables.
Usage: geodb [options] -r, --reload manually trigger a georedundancy reload this device will become reload_receiving -s, --status output a single word status e.g. "connected" -i, --irules lists all entries in iRule session table in raw format -c, --count show persistance record count -w, --watchdog show watchdog monitor status e.g. "alive" or "expired"
Possible geodb states
  • unset/offiline
    : Geo-redundancy is not initialized or not enabled
  • connected
    : In sync with remote site
  • reload_receiving
    : Waiting for reload data from remote site
  • reload_sending
    : Sending reload data to remote site
  • standalone
    : Reload timeout has expired, running standalone
Possible geodb watchdog output
  • unset
    : Geo-redundancy is not initialized or not enabled
  • alive
    : Received watchdog keep alive from remote site within allocated watchdog period
  • expired
    : Watchdog timeout expired

Kafka tools

Kafka includes a number of tools for maintenance and administration of a Kafka cluster as part of the open source project. Under normal circumstances, these tools are not required, but can be useful for troubleshooting as a last resort.
Modifying Kafka configs generated by iAppLX is
not
recommended.
By default,
JAVA_HOME
is not configured on a BIG-IP; set it before using any of the Kafka tools.
Topic and consumer group are configured in the Geo-Redundancy profile.
Each BIG-IP maintains its own Kafka cluster, so output will likely be different on each BIG-IP.
The scripts below are located in
/usr/bin/kafka/bin/
. For more information:
https://kafka.apache.org/quickstart
.
  • Set
    JAVA_HOME
    :
    # export JAVA_HOME="/usr/java/java-1.7.0-openjdk"
  • List created topics:
    # /usr/bin/kafka/bin/kafka-topics.sh --list --zookeeper localhost:2181
  • Check topic status:
    # /usr/bin/kafka/bin/kafka-topics.sh --describe --zookeeper localhost:2181 --topic <topic>
  • Checking consumers offset:
    # /usr/bin/kafka/bin/kafka-consumer-groups.sh --bootstrap-server localhost:9192 --group <group> --describe
  • Producing test Kafka records:
    # /usr/bin/kafka/bin/kafka-console-producer.sh --broker-list localhost:9192 --topic <topic>
  • Consuming Kafka records:
    # /usr/bin/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9192 --topic <topic>