Programmer Group

About Ganglia Ganglia is an open source cluster monitoring visualization tool initiated by UC Berkeley, which is designed to measure thousands of nodes. Ganglia's core includes gmond, gmetad and a Web front end. It is mainly used to monitor the system performance, such as: cpu, mem, hard disk utilizat ...

Article directory 1, zabbix monitoring httpd service 2, zabbix monitoring nginx Font adjustment of web interface Add a new monitoring item nginx.accept 3, Different types of picture switching This experiment is based on the previous one, and has monitored server2 and server3 1, zabbix monitor ...

1. Types of data persistence:1.emptyDir: Can only be used as temporary storage.If the container is deleted, the data still exists, and if the Pod is deleted, the data is deleted.2.HostPath: Less scenarios increase the coupling between Pod and nodes.3.PV, PVC: based on NFS services.The PV state must be Available, the access mode must be the sam ...

MySQL highly available KeepAlived dual hosts In the production environment, one MySQL host has a single point of failure, so we need to ensure the high availability of MySQL, that is, two MySQL servers. If one of the MySQL servers hangs up, the other can take over immediately.MySQL's high availability schemes are generally as follows: keepali ...

I installed cent os7 on my old DELL computer as a normal development server, and the notebook usually has WIFI and wired network card, so set this notebook as a server with dual network card. See more( www.omob.cc) When I install cent os7, I will minimize the installation. However, during the installation process, during the g ...

ConfigMap and Secret are two special types of storage volumes in Kubernetes. ConfigMap is a resource object mainly used to provide configuration data to customize program behavior. However, some sensitive configuration information, such as user name, password, key and so on, are usually configured by a resource object such as Secret, which sto ...

Overview of squid proxy server; Overview: Squid Cache (SQUID for short) is http proxy server software. Squid is widely used as a cache server or a cache proxy server. It can be used as a proxy server for users to request data from the web server and cache it. It can filter traffic to help network secu ...

k8s general environmental plan Environmental equipment Two master nodes, two node nodes and two node nodes are installed with nginx for load balancing, failover and floating address vip Deployment process Turn off firewall and security functions systemctl stop firewalld.servicesetenforce 0 Copy the kubernetes directory to master2 (last exp ...

Through Bo Wen Storage Volume of Kubernetes It can be seen that the process of Kubernets to realize data persistence is as follows:Build NFS underlying storage - > create PV - > create PVC - > create podFinally, the container in the pod will realize data persistence! From the above process, it seems that there is no problem, but after ...

Key points: 1. Experimental environment 2. Load balancing scheduler deployment 1, Experimental environment: Based on the previously deployed multi Master cluster architecture, deploy two scheduler servers (nginx is used here) to achieve load balancing: Deployment 1 of kubernetes binary cluster - deployment of etcd storage component and flan ...