persist data in Prometheus

May 12, 2026

I was experiencing an issue where Prometheus persisted information, but it displayed the metric without the increase() function, so it didn’t show the accumulated data […]

docker-compose.yml explain of each section

May 11, 2026

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| CLI, command, configuration, console, docker, docker-compose, information, linux, Linux Ubuntu Server, messaging, server

the docker-compose.yml This file is the “instruction manual” for Docker to know how to start the services content: the command to UP the services in […]

create a Docker image of an application

May 10, 2026

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| command, configuration, console, docker, gradle, image, information, linux, Linux Ubuntu Server, server, spring-boot

In my case, I’ll do this with a .jar file (a Java app) (the location of .jar is in the root directory, search: /build/libs/) You […]

reset casaos login data via console

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| casaos, command, configuration, information, linux, Linux Ubuntu Server, password, remote-access, script, server, web

in the OS execute the command: Then, when you enter Casaos, you will be asked to create your username and password again

ports image, container port and port of localhost

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| command, configuration, console, docker, image, information, linux, Linux Ubuntu Server, port

Dockerfile has content: Port 8080 is for informational purposes or as a comment; the Java application actually listens on port 8090 (i.e., 8080 is incorrect, […]