Centos 7 installs OpenNebula and creates a KVM chick tutorial

OpenNebula is a set of open source cloud computing basic management tools that facilitate administrators to uniformly deploy, create, allocate and manage a large number of virtual machines in the data center, such as KVM, XEN, OpenVZ VPS, etc.

Control terminal: 1.1.1.1node terminal: 2.2.2.2

1. Control terminal installation (based on Centos 7 system) 1. Close SElinux and edit /etc/selinux/config

SELINUX=disabled

Then, restart

2. Add opennebula official source

cat /etc/yum.repos.d/opennebula.repo [opennebula] name=opennebula baseurl=http://downloads.opennebula.org/repo/5.2/CentOS/7/x86_64 enabled=1 gpgcheck=0 EOT

3. Install software a.

yum install epel-release

b、

yum install opennebula-server opennebula-sunstone opennebula-ruby opennebula-gate opennebula-flow

The following software is installed: opennebula: Command Line Interface.opennebula-server: Main OpenNebula daemon, scheduler, etc.opennebula-sunstone: Sunstone (the GUI) and the EC2 API.opennebula-ruby: Ruby Bindings.opennebula-java : Java Bindings.opennebula-gate: OneGate server that enables communication between VMs and OpenNebula.opennebula-flow: OneFlow manages services and elasticity.opennebula-node-kvm: Meta-package that installs the oneadmin user, libvirt and kvm.opennebula-common : Common files for OpenNebula packages. The above software configuration is located in /etc/one and /var/lib/one/remotes

4. Install Ruby Runtime

/usr/share/one/install_gems

Choose 1, then press Enter to execute the installation: sqlite3 development librarymysql client development librarycurl development librarylibxml2 and libxslt development librariesruby development librarygcc and g++make

5. Start OpenNebula

a. Centos 7 user oneadmin logs in and changes the oneadmin password

su oneadmin

Change password (in root mode)

passwd oneadmin

b. Start opennebula

systemctl start opennebula systemctl start opennebula-sunstone

or

service opennebula start service opennebula-sunstone start

6. Check whether opennebula is installed successfully

oneuser show

OpenNebula log location /var/log/one

7. Close the firewall systemctl stop firewalld.service #Stop firewallsystemctl disable firewalld.service #Disable firewall from starting firewall-cmd –state #View the default firewall status (notrunning is displayed after closing, running is displayed after opening)

8. Web login to your server IP: 9869 Username: oneadmin Password: stored in /var/lib/one/.one/one_auth

2. Node side settings (based on centos 7) 1. Add opennebula official source

cat /etc/yum.repos.d/opennebula.repo [opennebula] name=opennebula baseurl=http://downloads.opennebula.org/repo/5.2/CentOS/7/x86_64 enabled=1 gpgcheck=0 EOT

2. Install kvm

yum install opennebula-node-kvm service libvirtd restart

3. Close SElinux and edit /etc/selinux/config

SELINUX=disabled

4. Exchange SSH Keya and change settings to facilitate SSH interaction. Since OpenNebula Front and Nodes communicate through SSH, the front and nodes must be set to SSH. Passwordless login avoids front running scripts or cloning images on nodes. When entering the password, first configure sshd on front and nodes (about lines 47 and 48):

vi /etc/ssh/sshd_config RSAAuthentication yes PubkeyAuthentication yes /etc/init.d/sshd restart

b. Create interactive SSH control terminal operation:

ssh-keygen-trsa ssh-copy-id -i ~/.ssh/id_rsa.pub 2.2.2.2

Node side operations:

ssh-keygen-trsa ssh-copy-id -i ~/.ssh/id_rsa.pub 1.1.1.1

or

scp -rp /var/lib/one/.ssh :/var/lib/one/ scp -rp /var/lib/one/.ssh :/var/lib/one/ scp -rp /var/lib/one/.ssh :/var/lib/one/

c. Create a network bridge

Official tutorial: http://docs.opennebula.org/

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