Installing ceph octopus using cephadm

WeChat official account: operation and development story, author: wanger prerequisite Cephadm uses containers and systemd to install and manage Ceph clusters and is tightly integrated with CLI and dashboard GUI. cephadm only supports Octopus V15 2.0 and later. cephadm is fully integrated with the new business process API and fully suppor ...

Posted by Deserteye on Sun, 09 Jan 2022 16:42:54 +0100

Spring source code - container refresh #invokeBeanFactoryPostProcessors()

#Spring source code - container refresh #invokeBeanFactoryPostProcessors() Spring version: Spring 5.3.13-release #1. invokeBeanFactoryPostProcessors() activates the factory's processor into the IOC container as a Bean The purpose of this step is to call the enhanced processors of various beanfactories. The most critical one is the Con ...

Posted by littlevisuals on Sun, 09 Jan 2022 06:24:46 +0100

[Docker] learning notes - detailed tutorial on crazy learning Java

Weakness and material are not obstacles to production, arrogance is—— Three body 1, Overview 1.1 causes common problem: When your computer runs, others can't run, which brings a great test to the operation and maintenance.Environment configuration is cumbersome, time-consuming and laborious, and can not cross platform. Wh ...

Posted by gtomescu on Thu, 06 Jan 2022 00:20:24 +0100

Prometheus Operator uses ServiceMonitor to manage monitoring configuration - 1

    Managing monitoring configurations using ServiceMonitor Modifying the monitoring configuration item is also one of the common operation and maintenance operations under Prometheus. In order to automatically manage the configuration of Prometheus, the Prometheus Operator uses the custom resource type ServiceMonitor to describe the info ...

Posted by sparq on Wed, 05 Jan 2022 14:19:02 +0100

LinkList source code analysis

LinkList source code analysis @auther worry free youth @creatTime 2020/07/16 1, Foreword This time, let's take a look at the second of the common lists - LinkedList. When analyzing ArrayList earlier, we mentioned that LinkedList is a linked List structure. In fact, it is similar to the LinkedHashMap structure we talked about when anal ...

Posted by amit.patel on Wed, 05 Jan 2022 01:39:53 +0100

kubernetes introduction practice - Ingress

ㅤㅤㅤ ㅤㅤㅤ ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ (reading without thinking is equal to eating without digesting. -- Polk) ㅤㅤㅤ ㅤㅤㅤ ㅤㅤㅤㅤㅤㅤㅤㅤㅤ This tutorial demonstrates how to use ingress-nginx To do cluster load balancing, domain name access and ssl. Ingress Ingress is an API object that manages the external access of s ...

Posted by sb on Tue, 04 Jan 2022 08:53:25 +0100

Automatic capacity expansion principle of ArrayList

preface The underlying data structure of ArrayList is array, Array is characterized by fast query and slow addition and deletion The reasons are: sequential storage and index. You can directly locate the elements according to the index, so the query is fast; Because it is stored sequentially, adding or deleting will affect subsequent elements ...

Posted by josephman1988 on Tue, 04 Jan 2022 04:44:16 +0100

Docker basic operation notes

dokcer structure diagram Docker includes three basic concepts: Image: Docker image is equivalent to a root file system. For example, the official image ubuntu:16.04 contains a complete set of root file system of the smallest system of Ubuntu 16.04.Container: the relationship between an Image and a container is like a class and instanc ...

Posted by dsandif on Tue, 04 Jan 2022 01:39:46 +0100

Python advanced training - Num1, inheritance, polymorphism

Class: used to describe a collection of objects with the same properties and methods. It defines the properties and methods common to each object in the collection. An object is an instance of a class.Inheritance: that is, a derived class inherits the fields and methods of the base class. Inheritance also allows the object of a derived class to ...

Posted by marcusb on Mon, 03 Jan 2022 19:50:33 +0100

Speed of light from 0 to 1 master Prometheus and Grafana, Tencent cloud expert 5 million words essence tutorial free.

author Huang Lei, a senior engineer of Tencent cloud, was responsible for building a new generation of multi-dimensional business monitoring system for Tencent cloud monitoring. He is good at large-scale distributed monitoring system design and has a deep understanding of the architecture design of golang background project. Later, he joined th ...

Posted by Marijnn on Mon, 03 Jan 2022 19:24:40 +0100