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Apache Tomcat

Apache Tomcat is a web server and servlet container that allows the execution of Java Servlets and JavaServer Pages (JSP) for web applications. Telegraf is a plug-in driven server agent for collecting and sending metrics and events from databases, systems and IoT sensors.

To send your Prometheus-format Apache Tomcat metrics to Logz.io, you need to add the inputs.tomcat and outputs.http plug-ins to your Telegraf configuration file.

Configure Telegraf to send metrics data to Logz.io

Set up Telegraf v1.17 or higher

For Windows

wget https://dl.influxdata.com/telegraf/releases/telegraf-1.27.3_windows_amd64.zip

After downloading the archive, extract its content into C:\Program Files\Logzio\telegraf\.

The configuration file is located at C:\Program Files\Logzio\telegraf\.

For MacOS

brew install telegraf

The configuration file is located at /usr/local/etc/telegraf.conf.

For Linux

Ubuntu & Debian

sudo apt-get update && sudo apt-get install telegraf

The configuration file is located at /etc/telegraf/telegraf.conf.

RedHat and CentOS

sudo yum install telegraf

The configuration file is located at /etc/telegraf/telegraf.conf.

SLES & openSUSE

# add go repository
zypper ar -f obs://devel:languages:go/ go
# install latest telegraf
zypper in telegraf

The configuration file is located at /etc/telegraf/telegraf.conf.

FreeBSD/PC-BSD

sudo pkg install telegraf

The configuration file is located at /etc/telegraf/telegraf.conf.

Add the inputs.tomcat plug-in

First you need to configure the input plug-in to enable Telegraf to scrape the Apache Tomcat data from your hosts. To do this, add the following code to the configuration file:

[[inputs.tomcat]]
## URL of the Tomcat server status
# url = "http://127.0.0.1:8080/manager/status/all?XML=true"

## HTTP Basic Auth Credentials
# username = "tomcat"
# password = "s3cret"

## Request timeout
# timeout = "5s"

## Optional TLS Config
# tls_ca = "/etc/telegraf/ca.pem"
# tls_cert = "/etc/telegraf/cert.pem"
# tls_key = "/etc/telegraf/key.pem"
## Use TLS but skip chain & host verification
# insecure_skip_verify = false
note

The full list of data scraping and configuring options can be found here.

Add the outputs.http plug-in

After you create the configuration file, configure the output plug-in to enable Telegraf to send your data to Logz.io in Prometheus-format. To do this, add the following code to the configuration file:

[[outputs.http]]
url = "https://<<LISTENER-HOST>>:8053"
data_format = "prometheusremotewrite"
[outputs.http.headers]
Content-Type = "application/x-protobuf"
Content-Encoding = "snappy"
X-Prometheus-Remote-Write-Version = "0.1.0"
Authorization = "Bearer <<PROMETHEUS-METRICS-SHIPPING-TOKEN>>"

Replace the placeholders to match your specifics. (They are indicated by the double angle brackets << >>):

  • Replace <<LISTENER-HOST>> with the Logz.io Listener URL for your region, configured to use port 8052 for http traffic, or port 8053 for https traffic. For example, listener.logz.io if your account is hosted on AWS US East, or listener-nl.logz.io if hosted on Azure West Europe.
  • Replace <<PROMETHEUS-METRICS-SHIPPING-TOKEN>> with a token for the Metrics account you want to ship to.
    Here's how to look up your Metrics token.

Start Telegraf

On Windows:
telegraf.exe --service start
On MacOS:
telegraf --config telegraf.conf
On Linux:

Linux (sysvinit and upstart installations)

sudo service telegraf start

Linux (systemd installations)

systemctl start telegraf

Check Logz.io for your metrics

Log in to your Logz.io account and navigate to the current instructions page inside the Logz.io app. Install the pre-built dashboards to enhance the observability of your metrics.

To view the metrics on the main dashboard, log in to your Logz.io Metrics account, and open the Logz.io Metrics tab.