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Note: This article is not an original article, which is transferred from the following: View and setup of Selinux 1. Check SELinux status 1.1 getenforce The getenforce command is a combination of the words get (get) and enforceto view the selinux status, as opposed to the setenforce command. The setenforce command is a combination of th ...

The complete architecture requires two servers (the role is dir) to install the Keepalived tool respectively, in order to achieve high availability, but Keepalived also has load balancing function, so only one Keepalived can be installed in this use. Keeping alive has the function of ipvsadm built in, so you don't need to install ipvsadm packa ...

Redis Sentinel is a distributed system. You can run multiple Sentinel processes in one architecture. These processes use the gossip protocols to receive information about whether the primary server is offline, and use the agreement protocols to decide whether to perform automatic failover, And which slave server to choose as the new master serv ...

TFTP is a file transfer protocol similar to FTP, but it does not require user authentication and cannot list directories. The TFTP server always listens for requests from PXE clients on the network. When it detects that PXE client requests PXE service in the network, it will provide network data package containing boot ...

Previous picture FATAL Error: listen EADDRNOTAVAIL 123.57.251.57:5601 The configuration file is configured as follows: [root@head-kib ~]# cd /usr/local/kibana-6.5.4-linux-x86_64/config/ [root@head-kib config]# vim kibana.yml server.port: 5601 server.host: "123.57.251.57" elasticsearch.url: "http://192.168.246.234:9200 "ාes node kibana.in ...

mongoDB Replica Set Actual Warfare background Features of a mongoDB single server: - Risk of data loss - Single server cannot be highly available Features of the mongoDB replica set: -High Availability Architecture to Prevent Data Loss - Keep multiple replicas synchronized and consistent - The mongodb replica set switches automatically when ...

Go to http://www.sonatype.org/nexus/go/ Download nexus-2.14.5-02-bundle.tar.gz Create the nexus directory in the server and download the Nexus (upload it to the oss first and then download it in the form of wget) [root@iZm5e0c5bxd15k4yfdiirsZ opt]# mkdir nexus [root@iZm5e0c5bxd15k4yfdiirsZ opt]# ls apache-tomcat-8.0.30 jdk1.8.0_11 nexus r ...

kibana start error Elasticsearch cluster did not respond with license information This error reporting environment is an ES cluster composed of four elastic search servers. The versions are all elk7.1.0. There are many online documents for specific installation steps.Use cdh1 as the master, cdh2, cdh3, and cdh4 as the datanode nodes. After the ...

Tags (space delimited): kubernetes series One: What is Helm 2: Helm deployment One: What is Helm Before using helm, deploying applications to kubernetes requires a cumbersome process of deployment, svc, and so on.Moreover, as many projects are microserviced, deployment and management of complex applications in containers becomes mor ...

1. Nginx access log 1.1 log format [root@host ~]# vim /usr/local/nginx/conf/nginx.conf / / search for log \ ... ... log_format combined_realip '$remote_addr $http_x_forwarded_for [$time_local]' ' $host "$request_uri" $status' ' "$http_referer" "$http_user_agent"'; #Combined? Realip is the log name # The contents of the log are followed ...