Configuring the Environment

Perform the operations in this section on each node.

1. Install the dependencies.

   1	yum install -y libuuid-devel libibverbs-devel librdmacm-devel libattr-devel redhat-rpm-config rpm-build xfsprogs-devel zlib-devel ant gcc-c++ gcc redhat-lsb-core java-devel unzip libcurl-devel elfutils-libelf-devel kernel-devel

2. Install devtoolset.

   1 2 3

   yum install centos-release-scl yum install devtoolset-7 scl enable devtoolset-7 bash

3. Disable the firewall.

   systemctl stop firewalld
   systemctl disable firewalld

4. Set the permissive mode.

   sed -i 's/SELINUX=enforcing/SELINUX=permissive/g' /etc/selinux/config

5. Open /etc/hosts.

   vim /etc/hosts

   Add the following content:

   192.168.122.2 vm1.kclouder.local vm1 localhost n1
   192.168.122.3 vm2.kclouder.local vm2 localhost n2
   192.168.122.4 vm3.kclouder.local vm3 localhost n3
   192.168.122.5 vm4.kclouder.local vm4 localhost n4

   

   Set the IP addresses in 5 based on actual conditions.

6. Download and install the kernel-devel package.

   yum install kernel-devel