All 35 Plugins   (Ordered by Popularity)


Ruby on Rails Monitoring

By Scout (1257 installs)
Monitors a Ruby on Rails application's performance, providing rich alerts on slow requests and a detailed daily performance report. Nothing to install in your Rails app - just provide a full path to the log file.

Server Load

By Highgroove Studios (1021 installs)
Monitors the load on server, generating an alert if the load over the last minute is greater than a specified amount.

Disk Usage

By Highgroove Studios (892 installs)
Monitors the amount of space remaining on a disk, generating an alert if the amount of space used exceeds a given percentage.

Memory Profiler

By Eric Lindvall (777 installs)
Returns a profile of the system's memory usage (memory used, % memory used, swap used, % swap used, etc). Requires procfs.

URL Monitoring

By Scout, Eric Lindvall (416 installs)
Monitors the availability of a URL, sending an alert if the URL is not reachable. The following data is reported: * Url Reachable (1 if reachable, 0 if not) * Response Time (secs)

Process Usage

By Scout, Eric Lindvall (272 installs)
Monitors the memory usage of a process, generating an alert if it exceeds a specified threshold.

MySQL Stats w/MySQLTuner

By Eric Lindvall (265 installs)
Returns statistics on MySQL select, delete, insert, and update operations, and generates weekly MySQL tuning and performance recommendations.

Network Throughput

By Eric Lindvall (263 installs)
Measures network in/out in KB per sec and packets per sec.

Device Input/Output (iostat)

By Rob Lingle, Eric Lindvall (193 installs)
Reports the current utilization.

MySQL Slow Queries

By Forumwarz (181 installs)
Monitors for slow MySQL queries and generates an alert (containing the queries) whey they occur.

CPU usage NEW

By Eric Lindvall (176 installs)
Measures User, System, and Idle percentages, plus blocked and running processes, and more.

Phusion Passenger Monitor

By Highgroove Studios (153 installs)
Tracks Passenger's VM size, process count, and the amount of private memory it has squirreled away. You can also elect to be emailed if any of these statistics crosses a line you indicate.

Apache Log Analyzer

By Scout (118 installs)
Provides statistics from an Apache access log: request distribution by hour, most popular URIs, traffic sorted by sum, and traffic sorted by mean. Just install this plugin in Scout and provide the full path to the Apache access log file.

Processor statistics (mpstat)

By Yaroslav Lazor (116 installs)
Reports the following MP statistics : user, nice, sys, iowait, irq, soft, steal, idle, intrps

Log Watcher

By Yaroslav Lazor (113 installs)
Monitors a given log file, reporting the rate of occurrences of a provided term.

Delayed Job

By Lukas Rieder, Alexander Lang & Eric Lindvall (99 installs)
Monitors Delayed Job, a Database-backed asynchronous priority queue.

Memcached Monitor

By Jesse Newland (59 installs)
Provides stats on your memcached instance, including gets/ sets/ hits/ misses/ evictions/ per second, uptime, memory used, KB read per second, KB written per second, and more.

Passenger Status

By Jason Lee (56 installs)
Provides metrics on Passengers internal state, including the number of application instances that are currently alive, the number of instances that are currently processing requests, and the number of idle instances.

Sphinx Monitoring

By Sam Sinensky (51 installs)
Monitors Sphinx, an open-source SQL full-text search engine.

Redis Monitoring

By Matt Todd and Ches Martin (39 installs)
Monitors a Redis database, reporting commands per-second, connections per-second, Used Memory, and more.

HAProxy Stats

By Jesse Newland (36 installs)
Monitors HAProxy, a TCP/HTTP load balancer.

MySQL Replication Monitor

By Mike Mangino (32 installs)
Monitors the replication for a master-slave MySQL database setup reporting the number of seconds the slave is behind the master.

MongoDB Monitoring NEW

By John Nunemaker (27 installs)
Monitors a MongoDB instance, reporting the query rate, memory & disk usage, index miss ratio, and other metrics.

EC2 CloudWatch

By Andre Lewis (27 installs)
Get graphs, alerts, and trends on your CloudWatch data. Captures NetworkIn, NetworkOut, DiskReadOps, DiskWriteOps, DiskReadBytes, DiskWriteBytes, and CPUUtilization on a single instance or an autoscaling group.

Resque Monitoring

By Jesse Newland (26 installs)
Monitors Resque, a Redis-backed Ruby library for creating background jobs, placing those jobs on multiple queues, and processing them later.

Nginx monitoring

By Luc Castera (23 installs)
Monitors Nginx, reporting the total # of requests, the total number of connections, and the number of connections reading, writing, and waiting.

Apache Load

By Will Ronco (22 installs)
Monitors Apache traffic, reporting throughput in requests per-second.

PostgreSQL monitoring

By Robert Coup of Koordinates (22 installs)
Provides a summary of PostgreSQL cluster query activity.

RabbitMQ Queue Monitoring

By Doug Barth (20 installs)
Monitors a given RabbitMQ Queue

MongoDB Slow Queries

By Jacob Harris (17 installs)
Reports slow queries based on the threshold (100ms or greater) you specify. Provides details on queries that are slow. This plugin is BETA.

Timestamp Monitor

By Chad Woolley (11 installs)
Checks the timestamp on a given file, generating an alert if the timestamp of the file is older than a given threshold.

RabbitMQ Overall Monitoring

By Doug Barth (11 installs)
Monitors RabbitMQ, an enterprise messaging system based on the emerging AMQP standard.

Monitor /proc/mdstat

By Mark Hasse (9 installs)
Monitors /proc/mdstat for disk failures.

Mongrel Cluster Monitor

By Highgroove Studios (9 installs)
Uses mongrel_rails cluster::status to determine if any mongrels in your cluster have gone down. Sends alerts and attempts to restart when mongrels go down.

Starling Monitor

By Mike Mangino (6 installs)
Monitors the number of items in a starling queue, generating an alert if the maximum queue depth is exceeded for a given queue.
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Latest Commits

Latest Help Entries

  • Ruby on Rails Monitoring Monitoring a Rails 3 application
    Aug 31
  • Apache Load ZeroDivisionError: divided by 0
    Aug 30
  • MySQL Stats w/MySQLTuner "The --forcemem option is required for remote connections" In detailed report
    Aug 18
  • Delayed Job Scout stops reporting - Agent returns an error: zlib(finalizer): Zlib::GzipWriter object must be closed explicitly
    Aug 03
  • MySQL Slow Queries Modified parsing logic for Engine Yard Cloud
    Jul 30
  • Resque Monitoring Why is the failed jobs count displayed in Scout higher than that on resque-web?
    Jul 22