Docker learning notes: image, container, data volume

Core concepts Image: a read-only template, similar to the image of a virtual machine. Container: it can be understood as a running instance of the image. The runtime is similar to a sandbox, with multiple containers independent of each other. Warehouse: the place where image files are stored. image Command table command explai ...

Posted by evildarren on Sat, 16 May 2020 09:07:41 +0200

centos7 docker installation configuration swarm cluster configuration Portal Management

1, Install dockersystem information [root@localhost yum.repos.d]# cat /etc/centos-release CentOS Linux release 7.8.2003 (Core) [root@localhost yum.repos.d]# uname -a Linux localhost.localdomain 3.10.0-514.el7.x86_64 #1 SMP Tue Nov 22 16:42:41 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux [root@localhost yum.repos.d]# 1. Install yum extension toolY ...

Posted by utpal on Fri, 15 May 2020 16:57:42 +0200

centos7 builds wordpress blog

Install apache yum install -y httpd Start apache systemctl start httpd Set apache to power on automatically systemctl enable httpd Access public network address to check whether apache is normal Install MySQL database wget -i http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm yum -y install mysql57-community-release-el7-10 ...

Posted by pedroteixeira07 on Mon, 11 May 2020 19:01:44 +0200

How to use Istio for multi-cluster deployment management: Single Control Plane Gateway Connection Topology

Author|Wang Xining Senior Technical Expert of Alibaba Guidance: This paper is abstracted from the book "Istio Service Grid Technology Analysis and Practice" written by Wang Xining, a senior technical expert in Ali Cloud. It describes how to use Istio to manage multi-cluster deployment to illustrate the support capability of service ...

Posted by ainoy31 on Thu, 07 May 2020 19:48:08 +0200

mongoDB advanced application

Replica set introduction What is a replica set -MongoDB replication is the process of synchronizing data on multiple servers. -Replication provides redundant backup of data and stores copies of data on multiple servers, improving data availability, And can ensure the security of data. -Replication also allows you to recover data from hardwa ...

Posted by Shibbey on Wed, 06 May 2020 03:09:50 +0200

Step by step to complete Kubernetes binary deployment -- etcd cluster building (single node)

Completing Kubernetes binary deployment step by step (I) -- etcd cluster building (single node) Preface The basic theory and core components of Kubernetes are briefly introduced. The first step of deploying Kubernetes cluster with single node and binary system is to build etcd cluster experiment flow. List of cluster planning (the next article ...

Posted by RestlessThoughts on Tue, 05 May 2020 17:14:40 +0200

How to find out the hard disk corresponding to the disk device in VMware virtual machine (Linux)

In VMware virtual machine (Linux), our Linux server may have multiple disks (or virtual disks), as shown below. The disks of this server include hard disk 1, hard disk 2 The hard disk 10 has a total of 10 hard disks.     In Linux system, the corresponding devices in the disk are as follows   [root@mylnx01 ~]# ls -lrt /dev/sd* brw-r----- 1 roo ...

Posted by jonybhi on Mon, 04 May 2020 22:34:19 +0200

k8s deployment and installation dashboard based on Centos8

Install and deploy dashboard 1. Check pod operation kubectl get pods -A -o wide Download the recommended.yaml filewget https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0/aio/deploy/recommended.yamlModify the recommended.yaml filevim recommended.yamlkind: ServiceapiVersion: v1metadata:  labels:    k8s-app: kubernetes-dashboard  name ...

Posted by anto on Mon, 04 May 2020 18:02:22 +0200

Elastic search 7.1 in depth learning

1. elatic engineer certification examination If you have the strength, you can take the exam. It will be helpful for the appreciation and salary increase 2. es architecture Ecosphere install jvm configuration Install plug-ins Use elasticsearch plugin in elasticsearch-7.1.0/bin to install the plug-in. es will download a ...

Posted by oskom on Mon, 04 May 2020 14:05:17 +0200

Slow log of MySQL Event scheduled tasks

Preface Recently, we are trying to use a log system, graylog, to collect the slow query log of mysql for subsequent analysis, monitoring and alarm. The test steps have been completed and the logs have been collected successfully. During the test, you need to brush some slow query logs. In order to brush more logs and not have a greater impact o ...

Posted by murp32 on Mon, 04 May 2020 13:43:41 +0200