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CentOS 7 Installs Docker Application Container Engine

Docker is an open source application container engine based on the  Go language  and open sourced under the Apache 2.0 protocol.

Docker allows developers to package their applications and dependencies into a lightweight, portable container that can then be published to any popular Linux machine or virtualized.

Containers are completely sandboxed and do not have any […]

Bond Technology Load Balancing in Linux

Problem introduction

When the general enterprise is used to provide NFS service, samba service or vsftpd service, the system must provide 7*24 hours of network transmission service. The maximum network transmission speed it can provide is 100MB/s, but when there are a large number of users accessing, the server’s access pressure is very high, and the […]

centos7 openldap

systemctl stop firewalld.service setenforce 0

sed -i s/^SELINUX=enforcing/SELINUX=disabled/g /etc/selinux/config

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.1.70 master.apple.com master 192.168.1.71 slave.apple.com slave 192.168.1.73 client1.apple.com client1 192.168.1.74 client2.apple.com client2

yum -y install openldap compat-openldap openldap-clients openldap-servers openldap-servers-sql openldap-devel migrationtools vim

cd /etc/openldap/slapd.d

rm -rf

cp /usr/share/openldap-servers/slapd.ldif /root/ldap/

Set OpenLDAP admin password. # generate […]

Backup and Restore Files in Red Hat / CentOS 7

This procedure is to backup XFS-based file systems in Red Hat Enterprise Linux 7.x               Backing up a file system (/etc)

1. To backup the /etc/ filessystem to a file called “/tmp/mybackup”, issue the following command:

# cd /tmp

# xfsdump -0f mybackup   /dev/mapper/rhel-root -s etc

where:

-f: do the dump to the file […]