Confluence

Auto-Detection

Built-in Metrics

Bleemeo monitors Confluence through automatic service detection and JMX metrics collection for wiki performance.

Auto-Detection

Glouton automatically detects Confluence instances running on the system.

To enable metrics gathering, the Bleemeo agent must be installed with JMX enabled. See Java JMX Metrics for setup details.

Confluence must also expose JMX over a TCP port. Follow the Live Monitoring Using the JMX Interface guide.

Summary for unauthenticated access:

• Add -Dcom.sun.management.jmxremote.port=3333 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false to the JVM. The default Confluence startup script accepts these from CATALINA_OPTS or JAVA_OPTS environment variables.

Caution

This allows unauthenticated access. Ensure no untrusted access to this port is possible, or set up authenticated JMX access.

If auto-detected parameters are incorrect, you can override them manually.

Linux

sudo tee /etc/glouton/conf.d/99-confluence.conf > /dev/null << 'EOF'
service:
  # For a Confluence running outside a container
  - type: "confluence"
    address: "127.0.0.1"
    port: 8090
    jmx_port: 3333
    jmx_username: "monitorRole" # by default, no authentication is done
    jmx_password: "secret"

  # For an additional Confluence running outside a container
  - type: "confluence"
    instance: "NAME_ASSOCIATED_WITH_YOUR_ADDITIONAL_SERVICE"
    address: "127.0.0.1"
    port: 8091
    jmx_port: 3334
    jmx_username: "monitorRole" # by default, no authentication is done
    jmx_password: "secret"

  # For a Confluence running in a Docker container
  - type: "confluence"
    instance: "CONTAINER_NAME"
    address: "172.17.0.2"
    port: 8090
    jmx_port: 3333
    jmx_username: "monitorRole" # by default, no authentication is done
    jmx_password: "secret"
EOF

Windows

Create or edit C:\ProgramData\glouton\conf.d\99-confluence.conf:

service:
  # For a Confluence running outside a container
  - type: "confluence"
    address: "127.0.0.1"
    port: 8090
    jmx_port: 3333
    jmx_username: "monitorRole" # by default, no authentication is done
    jmx_password: "secret"

  # For an additional Confluence running outside a container
  - type: "confluence"
    instance: "NAME_ASSOCIATED_WITH_YOUR_ADDITIONAL_SERVICE"
    address: "127.0.0.1"
    port: 8091
    jmx_port: 3334
    jmx_username: "monitorRole" # by default, no authentication is done
    jmx_password: "secret"

  # For a Confluence running in a Docker container
  - type: "confluence"
    instance: "CONTAINER_NAME"
    address: "172.17.0.2"
    port: 8090
    jmx_port: 3333
    jmx_username: "monitorRole" # by default, no authentication is done
    jmx_password: "secret"

Glouton automatically detects configuration changes.

Built-in Metrics

Metric	Description
service_status	Status of Confluence
confluence_db_query_time	Database query time in seconds
confluence_jvm_gc	Number of garbage collections per second
confluence_jvm_gc_utilization	Garbage collection utilization in percent
confluence_jvm_heap_used	Heap memory used in bytes
confluence_jvm_non_heap_used	Non-heap memory used in bytes
confluence_last_index_time	Time of last indexing task in seconds
confluence_queued_error_mails	Number of error mails queued
confluence_queued_index_tasks	Number of indexing tasks queued
confluence_queued_mails	Number of mails queued
confluence_request_time	Average time of request in seconds
confluence_requests	Number of requests per second

Monitoring Troubleshooting

See Troubleshoot a Service Check or Missing Metrics for what applies to every service: finding the address and port Glouton really uses, what each check message means, and how to read the collection error — which does not appear in the agent logs at the default level.

The Service Check is not OK

The check only opens the TCP port — it sends no command — so it fails when the port is wrong (Connection refused), when a firewall drops the packets (connection timed out after 10 seconds), or when the configured address cannot be parsed (Invalid TCP address). A green check proves the port is open, and nothing more.

Metrics are Missing

A passing check says nothing about the metrics: they are collected separately.

These metrics travel through JMX, which is a separate pipeline: Glouton writes /var/lib/jmxtrans/glouton-generated.json, jmxtrans connects to the JVM’s JMX port, and pushes the values back to Glouton. Every link has to be in place.

Check that the port is open and answers, from the machine where the agent runs. This only shows a JVM running on the host — for a containerized JVM, compare the address in discovery.txt with the ports the container itself listens on:

sudo ss -lntp | grep java

What you see	Cause	Fix
the bleemeo-agent-jmx package is missing	jmxtrans is not installed	sudo apt-get install bleemeo-agent-jmx (or yum) — see Java Monitoring with JMX
discovery.txt shows no JMX port for the service	No JMX port	Glouton reads it from the JVM command line (-Dcom.sun.management.jmxremote.port); if the JVM does not have it, set jmx_port in the service configuration
connection refused by the JVM	JMX authentication is enabled	Set jmx_username and jmx_password
jmxtrans connects, then times out	JMX answered with an RMI address jmxtrans cannot reach	The JVM must advertise the address discovery.txt shows for the service, with -Djava.rmi.server.hostname
nothing at all, for a JVM in a container	jmxtrans connects to the container address, not to a port published on the host	Publishing the port does not help. The JMX and RMI ports have to answer on the container address, and -Djava.rmi.server.hostname has to be that address

Confluence exposes its MBeans only when JMX monitoring is enabled in Administration → General Configuration → Monitoring.