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Introducing CouchDB monitoring (beta)

We’re happy to announce the beta release of Dynatrace CouchDB monitoring! CouchDB server monitoring provides a cluster overview and all relevant nodes metrics.

With CouchDB metrics, you’ll know immediately if your CouchDB installation is under performing. And when problems occur, it’s easy to see which nodes are affected. You can then drill down into the metrics of individual nodes to find the root causes of problems and potential bottlenecks.

To view CouchDB monitoring insights:

  1. From the navigation menu, select Technologies.
  2. Click the Apache CouchDB tile.
    Note that the monitoring of multiple CouchDB clusters isn’t supported in this beta release. All nodes are presented under a single process group.
  3. To view cluster metrics, expand the Details section of the CouchDB process group.
  4. Click the Process group details button. 
  5. On the Process group details page, select the Technology-specific metrics tab. From here you can identify problematic nodes. Just select a relevant time interval for the timeline, select a node metric from the metric drop list, and compare the values of all nodes in the sortable table. To access valuable CouchDB node metrics, select a node from the Process list on the Process group details page.
  6. Click the CouchDB metrics tab.
    Valuable CouchDB node metrics for each CouchDB process page are displayed on the CouchDB metrics tab. With the Requests chart, you’ll know how each node is performing. Above average Maximum request time measurements may indicate that you have some slow requests. Increased Average response time while the number of requests is stable indicates a performance problem. Additionality, you can check HTTP status codes and metrics on the Further details tab. To return to the cluster level, expand the Properties section of the CouchDB Process page and select the cluster.

CouchDB metrics

Average request time
Average request time inside CouchDB without MochiWeb

Maximum request time
Maximum request time inside CouchDB without MochiWeb

Requests
Overall number of HTTP requests

Requests 2xx
Aggregated number of HTTP 2xx responses

Requests 3xx
Aggregated number of HTTP 3xx responses

Requests 4xx
Aggregated number of HTTP 4xx responses

Requests 5xx
Aggregated number of HTTP 5xx responses

Additional CouchDB node monitoring metrics

More CouchDB monitoring metrics are available on individual Process pages. Select the Further details tab to view these monitoring insights.

On the Further details tab you’ll find two tabs and 16 valuable metrics.

Valuable CouchDB metrics

Reads
Number of times a document was read from a database

Writes
Number of times a database was changed

Open databases  
Number of open databases

Open OS files
Number of file descriptors CouchDB has open

Hits
Number of authentication cache hits

Misses
Number of authentication cache misses

COPY
Number of HTTP COPY requests

DELETE
Number of HTTP DELETE requests

GET
Number of HTTP GET requests

HEAD
Number of HTTP HEAD requests

POST
Number of HTTP POST requests

PUT
Number of HTTP PUT requests

Requests
Overall number of HTTP requests

Bulk requests
Number of bulk requests

View reads
Number of requests to the view indexes

Temporary view reads
Number of requests to the temporary view indexes

Prerequisites

  • CouchDB user with access to  /_stats resource
  • Linux or Windows OS
  • CouchDB 1.5.0+
  • It’s recommended that you install OneAgent on all CouchDB nodes.

Enable CouchDB monitoring globally

With CouchDB monitoring enabled globally, Dynatrace automatically collects CouchDB metrics whenever a new host running CouchDB is detected in your environment.

All CouchDB instances must have the same username and password.

  1. Go to Settings > Monitoring > Monitored technologies.
  2. Set the CouchDB switch to On.
  3. Click the ^ button to expand the details of the CouchDB integration.
  4. Define a User. (user must have access to /_stats)
  5. Define a Password and Port (the default port is 5984).
  6. Click Save.

Enable CouchDB monitoring for individual hosts

Dynatrace provides the option of enabling CouchDB monitoring for specific hosts rather than globally.

  1. If global CouchDB monitoring is currently enabled, disable it by going to Settings > Monitoring > Monitored technologies and setting the CouchDB switch to Off.
  2. From the navigation menu, select Hostsin the navigation menu.
  3. Select the host you want to configure.
  4. Click Edit.
  5. Set the CouchDB switch to On.

Have feedback?

Your feedback about Dynatrace CouchDB monitoring is most welcome! Let us know what you think of the new CouchDB plugin by adding a comment below. Or post your questions and feedback to Dynatrace Answers.

The post Introducing CouchDB monitoring (beta) appeared first on Dynatrace blog – monitoring redefined.

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