Web Application Monitoring in WildFly: Difference between revisions
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====Active Sessions==== | ====Active Sessions==== | ||
activeSessions in JMX, active-sessions in CLI. | Exposed as "activeSessions" in JMX, "active-sessions" in CLI. | ||
"active session" metric is managed by the web subsystem, which does not know what the underlying store is. The metric will reflect the Infinispan cache's numberOfEntries without backups, ''for the node in question'' and not cluster-wide. Essentially, it tells how many active sessions are managed by the node being read. | "active session" metric is managed by the web subsystem, which does not know what the underlying store is. The metric will reflect the Infinispan cache's numberOfEntries without backups, ''for the node in question'' and not cluster-wide. Essentially, it tells how many active sessions are managed by the node being read. | ||
Revision as of 16:41, 11 May 2017
External
- How to monitor HTTP Sessions to count / view the number of active HTTP sessions in JBoss EAP https://access.redhat.com/solutions/22091
Internal
- WildFly Monitoring
- Web Subsystem Operations
- JBossWeb/Tomcat HTTP Session Implementation Details
- JBossWeb Monitoring
Relevance
- EAP 6.4.10
Overview
Web applications deployed as part of a WAR deployment in JBoss are automatically instrumented to expose relevant runtime JMX statistics on the JMX bus and in CLI. These statistics refer mostly to HTTP session (active sessions, created sessions, max active sessions, expired sessions, session maximum and average alive time), but other information such as the virtual host or the context root is exposed.
If the web application is clustered (declared <distributable>), the CLI/JMX session metrics are cluster-wide metrics. For example, active session refers to the number of active sessions across the entire cluster.
JMX
The web application metrics are available under the following ObjectName:
jboss.as:deployment=<deployment-name>,subsystem=web
where <deployment-name> is the name of the deployment artifact (for example: myapp.war).
CLI
[standalone@ip-address:9999 /] /deployment=${deployment-name}/subsystem=web:read-attribute(name=active-sessions)
Metrics
These metrics are accessible both via JMX and CLI.
Active Sessions
Exposed as "activeSessions" in JMX, "active-sessions" in CLI.
"active session" metric is managed by the web subsystem, which does not know what the underlying store is. The metric will reflect the Infinispan cache's numberOfEntries without backups, for the node in question and not cluster-wide. Essentially, it tells how many active sessions are managed by the node being read.