Redmine

Redmine OTel is an OpenTelemetry plugin for Redmine. Built on OpenTelemetry, it traces incoming requests, SQL queries, and
outgoing HTTP calls while collecting application logs and performance metrics.
It helps identify bottlenecks and investigate issues from a centralized
interface.

*Key Features

Everything is accessible under Administration > OpenTelemetry.

• Traces: View incoming requests and background jobs with waterfall views of
  SQL queries and HTTP calls to identify performance bottlenecks.

• Logs: Browse Redmine application logs and filter by level, text, and
  time. Each log entry links to the corresponding request trace.

• Metrics: Monitor request durations by controller action, SQL query
  durations, thread activity, database connections, and Linux
  process memory. Metrics are collected every minute and displayed
  in charts.

Installation

1. Copy the plugin to redmine/plugins/redmine_otel and run bundle install.

2. Create the traces, logs, and metrics tables:

bundle exec rake redmine:plugins:migrate RAILS_ENV=production

3. Restart Redmine.

Tracing starts automatically with Rails.

Uninstallation

1. Drop the plugin tables:

bundle exec rake redmine:plugins:migrate NAME=redmine_otel VERSION=0 RAILS_ENV=production

2. Delete the plugins/redmine_otel directory.

3. Run bundle install and restart Redmine.