Programming VIP

1. ansible Management Task Plan # ansible testhost -m cron -a "name='test cron' job='/bin/touch /tmp/1212.txt'  weekday=6" Name specifies the name of the task plan, job specifies what its command is, and then it specifies its time-sharing day, month, week, or *. [root@yw02 ~]# crontab -l #Ansible: test cron * * * * 6 /bin/touch /tmp/1212.txt T ...

View kernel uname -r Set kernel source Mainly http://elrepo.org/tiki/tiki-index.php The ELRepo warehouse is a community-based Enterprise Linux warehouse that provides support for Red Hat Enterprise (RHEL) and other RHEL based Linux distributions (CentOS, Scientific, Fedora, etc.). ELRepo focuses on software packages related ...

The following operations are performed on the ZABBIX agent side: Initialize (execute script) sh init.sh httpd installation and startup (binary) yum install -y httpd* #Install httpd systemctl start httpd.service；systemctl enable httpd.service #Service startup and startup ss -ant |grep :80 #Check whether the 80 of httpd is up LISTEN 0 ...

Create mysql users and user groups groupadd mysql useradd -g mysql mysql passwd mysql Uninstalling mariadb from the system #query rpm -qa|grep mariadb Return mariadb-libs-5.5.60-1.el7_.x86_ #uninstall rpm -e mariadb-libs-5.5.60-1.el7_5.x86_64 Return error: Failed dependencies: libmysqlclient.so.18()(64bit) is needed by (installed) post ...

Preface: BIND Domain Name Service Base The Role and Type of DNS System BIND Installation and Profile Building a Domain Name Server with BIND Build Cached Domain Name Server Build master and slave domain name servers Important steps: Find the main configuration file, find the startup script I: The role of the DNS system 1.1 Forward Reso ...

Overview of clusters RabbitMQ cluster is implemented through Erlang's distributed feature (magic cookie authentication node). Each RabbitMQ service is peer-to-peer node, that is, each node provides services to the client to connect, send and receive messages. These nodes replicate message queue structure through RabbitMQ HA queue (mi ...

When installing the Red Hat Enterprise Linux 8 teaching environment, students need to install the environment into a virtual machine to practice on their laptops. VMware Workstation is generally recommended to host the entire teaching environment. Get ready: 1) mobile hard disk 2) USB disk above 16G 3) RHEL8 teaching environment software S ...

Deploy elk log analysis system to consume more computer hardware. If you use virtual machine for test deployment, it is recommended to allocate more hardware resources. Otherwise, when elk container is running, it will not work normally. I will allocate 5G of memory to the docker host, four CPU s. I. environmental preparation I use a docker ho ...

Apache Web page optimization concept In an enterprise, only the default configuration parameters are used after deploying Apache, which will cause many problems in the website. In other words, the default configuration is for the previous lower configuration.Server configuration, the previous configuration is not suitable for today's Internet ...

centos installation Version Description: centos7, mysql5.7, not centos7, some commands may not be compatible Install MySQL server # Download and install mysql yum. wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm yum -y install mysql57-community-release-el7-10.noarch.rpm # Install MySQL server yum -y install m ...