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I. Introduction to MHA Author brief introduction Song xinjiafan: MySQL/Linux expert Sony in 2001 oracle started in 2001 Started using MySQL in 2004 September 2006 August 2010 MySQL Consultant 2010-2012 DeNA 2012 ~ now Facebook Software introduction MHA can realize automatic fault detection and failover in a short time, usually within 10-30 se ...

Prefacelinux operation and maintenance management is generally managed by remote mode. When hundreds of server hosts need to be managed from a workstation, the remote maintenance mode will be more advantageous.I. SSH Remote ManagementSSH is a secure channel protocol, which is mainly used to realize the remote management, remote replication and ...

Ubuntu 16 configuration Hadoop 2.85 Set ssh password free login sudo apt-get install openssh-server #Install SSH server $ ssh localhost #Log in SSH, enter yes for the first time $ exit #Exit ssh localhost logged in $ cd ~/.ssh/ #If you ...

I. preliminary preparation 1.1 basic knowledge Heketi provides a RESTful management interface that can be used to manage the life cycle of a GlusterFS volume. Heketi will dynamically select bricks to build the required volumes in the cluster, so as to ensure that the copies of data will be distributed to different failure domains in the clust ...

Preface: We've seen a lot of articles analyzing the use or principles of Redis, but the introduction to a complete set of independent redis cluster environments is not much or not detailed enough. Then, this paper will take you hand to set up a Redis cluster environment, Redis cluster in the company's internal production environment, mostly bu ...

Tencent cloud 11.11 is the first purchase of 1-core 2G cloud server of 88 yuan, and receives 9888 yuan voucher free of charge. Once 100 cloud products are folded Then the last article goes on to say [git hook and Automated Deployment (I)] (https://segmentfault.com/a/11900021044092) webhook Definition Webhooks allow you to build or set up inte ...

1. Deploy highly available kube-controller-manager 1.1 Introduction to highly available kube-controller-manager In this experiment, a Three-instance cluster of kube-controller-manager is deployed. After starting, a leader node will be generated through the competitive election mechanism, and the other nodes will be blocked.When the leader nod ...

I. deploy the master node 1.1 master node service The kubernetes master node runs the following components: kube-apiserver kube-scheduler kube-controller-manager kube-nginx Kube apiserver, Kube scheduler and Kube controller manager all run in multi instance mode: Kube scheduler and Kube controller manager will automatically elect ...

I. deployment of kubectl 1.1 installation of kubectl 1 [root@k8smaster01 ~]# cd /opt/k8s/work 2 [root@k8smaster01 work]# wget https://dl.k8s.io/v1.14.2/kubernetes-client-linux-amd64.tar.gz 3 [root@k8smaster01 work]# tar -zxvf kubernetes-client-linux-amd64.tar.gz 1.2 distribution of kubectl 1 [root@k8smaster01 ~]# cd /opt/k8s/work ...

I. deploy ETCD cluster 1.1 install ETCD Etcd is a distributed key value storage system based on Raft, which is developed by CoreOS. It is often used in service discovery, shared configuration and concurrency control (such as leader election, distributed lock, etc.). kubernetes uses etcd to store all running data. Etcd is a distributed key ...