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Liferay is providing scheduler API to create schedule
job in Liferay Portal Applications. Liferay internally uses the Quartz
scheduler engine. Liferay also uses the Message Bus implementation with scheduler
API.
Software Stack
Liferay-ce-portal-7.4.1-ga2
...
Follow below Article to understand more about Message
Bus in Liferay.http://www.liferaysavvy.com/2021/07/working-with-liferay-message-bus.html
Implementation Steps
Create Destination ConfigurationCreate DestinationRegister Destination as OSGi ServiceManage the...
Liferay Message Bus is Java Message Service (JMS) implementation
which works like publish and subscribe to model. This is light weight component
integrated in Liferay Portal.
Multiple senders will send messages on destination and
other-end receivers listens the messages.
It is useful for batch...
Scheduler is one of the important components in any
application. To perform jobs periodically then application is required
scheduler. Liferay portal is providing scheduler in portal and we can schedule
jobs in portal applications.Liferay implemented scheduler on top of the quartz
scheduler engine....
Liferay 7.x
is using Elasticsearch and it’s embedded in the bundle. When we start Liferay
then embedded elastic instance also will start.
Development environments, this embedded search is ok
but for production environments we must need external Elasticsearch cluster.
If we are building...
Grafana is popular
open-source solution for monitoring applications. It will provide graphical
dashboards to build monitoring visualization.
Any graphical view required data or metrics, so
metrics data will be provided by Prometheus.
Prometheus is another monitoring tools to pull...
Prometheus is popular opensource monitoring tool. It can
monitor applications with help of JMX Exporter Java agent.
This Article demonstrate the Liferay Portal Server Monitoring
with Prometheus.
Prerequisite
Install Liferay...
PGL is Grafana Labs stack
which is similar to ELK stack. PLG is combination of Promtail, Loki and
Grafana.
P ---> Promtail
L ---> Loki
G ---> Grafana
Promtail
Promtail is independent
agent which runs in every server and send logs to Loki.
Loki
Grafana...
Grafana is popular open-source solution for monitoring
applications. It will provide graphical dashboards to build monitoring
visualization.
Any graphical view required data or metrics, so
metrics data will be provided by Prometheus.
Prometheus is another monitoring tools to pull data
from...
Prometheus is an open-source system monitoring and
alerting toolkit.
Download and Extract
Go to Prometheus download page and download latest
version.
https://prometheus.io/download/
Direct Links as...
Grafana is open-source analytics and visualization solution.
It provides charts, graphs and alerts. It
connects to multiple data sources and fetch the metrics data and monitor in Grafana
visualization dashboards.
It can be integrated with Prometheus monitoring tool
to create dashboard and...
Prometheus
is monitoring opensource tool. Previous Article we have enabled Zookeeper
metrics and monitor in the Prometheus.
http://www.liferaysavvy.com/2021/07/enable-metrics-provider-in-zookeeper.html
This article demonstrates the Kafka monitoring using Prometheus.
Prometheus uses the...
Tomcat access logs to keep the record of all requests processed
by the application which are deployed in tomcat server. It will log every
request and its response status. We can build many reports based on access
logs.
Default Tomcat Access logs will be writing all logs into
file when we enable it...
This article demonstrates the Liferay Portal Logs
monitoring using ELKK stack.
Elastic Search
Logstash
Kibana
Kafka
Previous Article We already implemented Liferay
Centralized logging system using Kafka.
Now we will use Logstash to pull the...
Kibana is analytics, visualization and monitoring tool
from Elastic stack. It will connect to Elastic search and analyze and visualize
the data. Most of the organizations are using Kibana for applications log
monitoring. We can build nice Dashboards in Kibana and configure alerts...
Logstash is one of the software from Elastic stack to
collect logs from different data sources and send logs to Elastic search. It
will take data from different sources and process data as per our requirements.
Software and Tools
Windows 10
Java 1.8 or
...
Elastic search is open-source distributed search and
analytics engine based on Lucene search engine. It’s completely Restful implementation
and easy to use.
Elastic search is core of Elastic stack and there are
many products from elastic stack.
Example demonstrating 3 nodes elastic search...
Kafka is distributed streaming system based on “publish
and subscribe to” model. We can use Kafka for centralized logging system
for applications.
This article demonstrate the implementation of Kafka centralized logging system for Liferay
Portal. This will be used in Liferay cluster...
Zookeeper provided “metrics provider” such a way
user can monitor zookeeper. Prometheus is one of the monitoring services can be
used to monitor zookeeper.
The following are the steps to enable metrics provider in Zookeeper.
Configure Metrics provider in Zookeeper...
Admin Server
Zookeeper is proving embedded jetty container to provide
HTTP interface to execute commands. From Zookeeper 3.5.0 onwards HTTP interface
is available. We need to enabled the Admin server from zookeeper configuration.
Zookeeper is providing set of 4 letters commands
to manage...
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