Tag：colony
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Elasticsearch day 2 installation and configuration of elasticsearch and elasticsearch head
Today’s goal Installation, configuration and integration of elasticsearch and elasticsearch head in PHP laravel project 1. Selection of ES version Before using ES, we must first choose an appropriate version. Choosing the latest version is always an infallible choice. At present, the latest version of ES official website is 8.0.0-alpha 2, which is published in […]
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Binary deployment kubernetes – 1.20.4
1. Environmental preparation Operating system: ecntos7 sixContainer engine: docker-ce-19 kubernetes：1.20.4 2. Overall server planning k8s-master1 192.168.145.100 kube-apiserver，kube-controller-manager，kube-scheduler，kubelet，kube-proxy，docker k8s-node1 192.168.145.101 kubelet，kube-proxy，docker k8s-node2 192.168.145.102 kubelet，kube-proxy，docker k8s-etcd-1 192.168.145.103 etcd k8s-etcd-2 192.168.145.104 etcd k8s-etcd-3 192.168.145.105 etcd 3. System initialization configuration 3.1. Close the firewall (all nodes) systemctl stop firewalld systemctl disable firewalld 3.2. Close SELinux (all nodes) Setenforce0 # […]
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What is cloud database? Detailed explanation of IAAs, PAAS, SaaS and dbaas
For many enterprises, the advantages of using cloud based database are obvious. Its advantage is to provide scalability, security and availability, and lower cost than custom and local database solutions. However, there are different types of cloud databases. Generally, we use terms such as IAAs, PAAS and SaaS to describe different levels of cloud computing. […]
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22. Kubernetes (k8s) note authentication, authorization and access control (II) authentication users account
Users accounts authentication Kubeconfig configuration file As mentioned earlier, the communication between k8s is realized through HTTPS. HTTPS communication requires authentication every time. For example, we enter a command on the command line [[email protected] ~]# kubectl get pod Both require HTTPS authentication, and HTTPS is a stateless link, which means that each access needs to […]
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Practice of Druid SQL and security in meituan review
Sharing guests: Gao Dayue @ meituan comments, Apache kylin PMC member, Druid commiter Edited by: Druid China user group 6th Meetup Production platform: datafuntalk — Reading Guide:Support for SQL and permissions has long been Druid’s weakness. Although the community added support for SQL and security as early as version 0.9 and 0.12, according to our […]
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You must understand these principles of kubernetes
Kubernetes has become the king in the field of container choreography. It is a container based cluster choreography engine. It has many characteristics and capabilities, such as cluster expansion, rolling upgrade and rollback, elastic scaling, automatic healing, service discovery and so on. This article will take you quickly to understand kubernetes and what we are […]
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Tencent cloud logstash actual combat 2- synchronize the data in MySQL to elasticsearch
Logstash can also be used to synchronize data in relational databases such as MySQL and PostgreSQL to other storage media. The following describes how to use itTencent cloud logstashSynchronize data into the MySQL product. Create pipe On the “pipeline management” page, click the “new pipeline” button to create a pipeline: Enter the pipeline configuration page, […]
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Gateway flow controller: realize ingress / nginx flow control combined with AHAS
Introduction: the stability of microservices has always been a topic of great concern to developers. With the evolution of business from single architecture to distributed architecture and the change of deployment mode, the dependency between services has become more and more complex, and the business system is also facing great high availability challenges. Author: graffiti […]
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Fully distributed configuration of big data (I) — basic environment configuration, Java, zookeeper, Hadoop, jobhisoryserver
preparation Minimize. After installing the master, make sure you can connect to the xshell. Clone slave1 and slave2, modify the network configuration, and ensure that the three virtual machines are in one gateway and can connect to xshell. Before using this tutorial, make sure you have installed pseudo distributed and have a certain Linux foundation. […]
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Construction of docker redis cluster
Redis is the earliest and most convenient way to set up a cluster of virtual machines. 1. Pull the image docker search redis docker pull redis 2. Generate configuration file mkdir redis-cluster cd redis-cluster vim redis-cluster.tmpl port ${PORT} masterauth 123456 requirepass 123456 cluster-enabled yes cluster-config-file nodes.conf cluster-node-timeout 5000 cluster-announce-ip 192.168.10.83 cluster-announce-port ${PORT} cluster-announce-bus-port 1${PORT} appendonly […]
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Construction of zookeeper multi node cluster
ZK detailed introduction Write at the beginningIn the last article on zookeeper, I introduced the steps related to starting and running ZK in the case of single node. It is very simple, but it is also necessary. Today, I’d like to introduce ZK multi node cluster construction (three virtual centos7 systems are used this time, […]
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Principle and implementation of service registration and discovery
What is service registration discovery? For students engaged in micro services, the concepts of service registration and service discovery should not be too strange. In short, when service a needs to rely on service B, we need to tell service a where to call service B, which is the problem to be solved by service […]