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1. Install Postfix yum -y install postfix After installation, you need to replace the sendmail that comes with the system: rpm -e sendmail perhaps yum remove sendmail Modify MTA (default mail transfer agent) alternatives --config mta and enter directly. 2. Install Dovecot (post office forwarding) yum -y i ...

Environmental inspection Enter root All of the following are performed as root sudo -i View Linux distribution [root@localhost ~]# cat /etc/os-release NAME="CentOS Linux" VERSION="7 (Core)" ID="centos" ID_LIKE="rhel fedora" VERSION_ID="7" PRETTY_NAME="CentOS Linux 7 (Core)" ANSI_COLOR="0;31" CPE_NAME="cpe:/o:centos:centos:7 ...

I. Dns DNSmasq is a small and convenient tool for configuring DNS and DHCP, which is suitable for small networks. It provides DNS function and optional DHCP function. It serves domain names that are only applicable locally, and these domain names will not appear in DNS servers around the world. DHCP server combines with DNS server, and allows ...

1, Install dependency package and prepare environment. yum install -y gcc Depending on the package, you can install it according to the prompts at compile time. But gcc must be installed. 2, 1. Download the tar package, install and start it. wget http://source.goyun.org:8000/source/Redis/redis-3.2.9.tar.gz --2018- ...

Experimental background: since the installation of k8s requires the use of an agent to use the official source, it is necessary to configure an agent in CentOS7 for scientific Internet access Install the Shadowsocks client Install epel source and pip package management sudo yum -y install epel-release sudo yum - ...

background Because rexray, the Ceph plug-in of docker, has certain requirements for Ceph version, when Ceph version is hammer (0.94.10), rexray cannot create rbd device successfully. For CentOS 7 and above, hammer is installed by default, so we need to install a higher version of jewel. Ceph version available See also. install For installation ...

Preceding text Assume you have basic knowledge of Azure and SQL Server HA Assume you have basic knowledge of Azure Cli The goal is to create an availability group with three replicas on Azure Linux VM and implement listener and Fencing configuration Environmental Science SQL Server 2019 Developer on Linux Azure VM Fencing agent Azure Cli imp ...

1. Download and install MySQL's official Yum Repository [root@localhost ~]# wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm Install MySQL Server root@localhost ~]# yum -y install mysql-community-server 2. MySQL database settings Start MySQL [root@localhost ~]# systemctl start mysqld.service View MySQL r ...

openstack-packstack One-click Online Deploymentopenstack focuses on services, covering network, virtualization, operating systems, servers, and so on.OpenStack released the latest version of Ocata in February 2017. Typically, it is updated about half a year - minor versionI. Eight core services common to OpenStack2. Advantages of OpenStack ...

(1) Auxiliary dns Set slave Select a machine as auxiliary dns machine Operation on auxiliary machine 1. yum install bind -y 2.vim /etc/named.conf listen-on port 53 { any; }; allow-query { any; }; dnssec-validation no; 3.vim /etc/named.rfc1912.zones zone "westos.com" IN { type slave; masters ...