Programming VIP

useradd command Function Description: add user or update default new user information Usage: useradd [options] login_name option explain -u，--uid UID When adding a new user, specify the UID number manually. The default is the UID+1 of the previous user, the UID usage range (CentOS6) 500 +, (CentOS7) 1000+ -g，--gid group_name When a ...

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. Environment configuration Hosts configuration   modify the / etc/hosts file and add wtcontroller, wtcompute1 and wtcompute2: 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 172.16.10.100 wtcontroller 172.16.10.101 wtcompu ...

1. Questions I created a VMware virtual machine to install OpenStack Kolla. Since only 8G of space was allocated to the root directory when the virtual machine was created, it was obviously not enough for later use and I wanted to expand 10G of space. View Current Disk [root@kolla-queens ~]# fdisk -l Disk /dev/sda: 21.5 G ...

Mariadb user and rights management Permission category Library level Table level Field level Management category Program class Management category: CREATE TEMPORARY TABLES Create temporary table CREATE USER Create user FILE SUPER SHOW DATABASES RELOAD SHUTDOWN REPLACTION SLAVE REPLACTION CLIENT LOCK TABLES PRECESS Progra ...

For the installation of Ubuntu 16.04.5, please refer to: http://blog.51cto.com/3241766/2323927 In this paper, the control node and calculation node of openstack are virtual machines newly built on esxi. The specific configuration is as follows: Control node configuration: Compute node configuration: The installation steps of the control no ...

Introduction: Openstack is an implementation of the IAAS architecture (infrastructure as a service), and OpenStack is an implementation of the IAAS architecture by NASA (National Aeronautics and Space Administration) A free software and open source project developed in collaboration with Rackspace and licensed under the Apache license.The foll ...

1. Virtual Machine Gets ip 1) Isolation of DHCP services with namspace Neutron provides DHCP services through dnsmasq, while dnsmasq isolates each network service independently through Linux Network Namespace On a two-tier network, VLAN can divide a physical switch into several independent virtual switches. Similarly, on a three-tier network ...

Introduction to DevStack    Devstack Ubuntu 14.04 and entOS 7 are currently supported, but most OpenStack developers around the world are using Ubuntu 14.04. So in order to reduce the trouble, it is recommended that you use Ubuntu 14.04.    By default, both Devstack and OpenStack are installed using Master's code, which ofte ...