Mark Sullivan

Can I embed a .png image into an HTML page?

Yes, you can definitely embed a .png image into an HTML page, and it’s actually one of the most common image formats used on the web. PNG supports transparency and good image quality, making it ideal for UI elements, icons, and graphics. Common Ways to Embed a PNG in HTML 1️ Using the >>< src alt="Description of…

Python

Answered Nov 2, 2025 · 710 Views Read answer →

Logging/Basic logging in kubernetes.

Use “kubectl logs counter” command to fetch logs -: Also, in kubernetes logs are created at node level. Also, log rotation should be enabled to ensure logs don't acquire much disk space and only needed information should be present on disk. Logs related to kubelet and container are journald and hence, present inside…

Devops

Answered Feb 19, 2020 · 1.8K Views Read answer →

Managing & scheduling host/service downtimes

Let’s suppose, one or some group of servers added in Nagios are going under maintenance hence they need to be shut down, but in such case Nagios will throw alerts and send notifications to respective contacts as it’ll treat this server as “DOWN”. Hence, Nagios gives an option of setting these servers under Downtime…

Devops

Answered Dec 29, 2019 · 1.5K Views Read answer →

Obtaining nagios and Nagios plugins

The latest release of Nagios plugins can find out at - https://www.nagios.org/downloads/nagios-plugins/ Also on, https://www.nagios.org/projects/nagios-plugins/ Nagios core can be downloaded for free from below link - https://www.nagios.org/downloads/ All previous releases are available on the official Nagios website.

Devops

Answered Dec 29, 2019 · 1.5K Views Read answer →

Understanding docker components and there way to communicate.

A docker engine, or docker daemon performs the operation which it receives via docker CLI and REST API. The docker daemon is responsible for what is happening when a docker CLI command is executed. Docker client - is basically docker command via which user inputs are provided via REST API to dockerd to achieve desired…

Devops

Answered Nov 20, 2019 · 1.9K Views Read answer →

Sending passive check results for hosts

Sending passive check results cannot be done via nrpe client as this is enabled and used for active checks from the Nagios server. In the case of passive checks, the result needs to be submitted by the client itself to Nagios server hence, this is achieved by nsca…

Devops

Answered Nov 17, 2019 · 1.4K Views Read answer →

Understanding escalations.

Nagios can also send alerts to other contact groups which can be marked as “escalated” one if no action has been taken on any such alert for more than a prescribed time (as mentioned in configuration). These alerts are sent to another set of contact groups if no action has been taken for triggered notifications within…

Devops

Answered Nov 5, 2019 · 1.4K Views Read answer →