April 25, 2024 by CodeFlowerHorn

Setting Up a KVM Hypervisor Host in Apache CloudStack

The compute host refers to a physical server running the Kernel-based Virtual Machine (KVM) hypervisor, which allows it to host and manage multiple virtual machines (VMs). Creating virtual machines must be done using the management server.

Add the repository for Apache Cloudstack

The Apache CloudStack version we used is 4.19

You must run the terminal as root

mkdir -p /etc/apt/keyrings
wget -O- http://packages.shapeblue.com/release.asc | gpg --dearmor | sudo tee /etc/apt/keyrings/cloudstack.gpg > /dev/null

echo deb [signed-by=/etc/apt/keyrings/cloudstack.gpg] http://packages.shapeblue.com/cloudstack/upstream/debian/4.19 / > /etc/apt/sources.list.d/cloudstack.list
apt update -y
apt install cloudstack-agent openssh-server bridge-utils net-tools -y

Setup bridge and static ip using netplan

After you paste the code below run netplan apply

You must use the correct network interface yours might be different instead of enp0s

You must check first if you're using the correct gateway and if the IP to use is available

network:
version: 2
renderer: NetworkManager
ethernets:
enp0s3: {}
enp0s8: {}
bridges:
cloudbr0:
addresses: [192.168.1.101/24]
dhcp4: false
routes:
- to: default
via: 192.168.1.1
nameservers:
addresses: [8.8.8.8, 8.8.4.4]
search: []
interfaces: [enp0s3]
parameters:
stp: true
cloudbr1:
dhcp4: false
interfaces: [enp0s8]
parameters:
stp: true

Enable VNC for console proxy

sed -i -e 's/\#vnc_listen.*$/vnc_listen = "0.0.0.0"/g' /etc/libvirt/qemu.conf

Enable libvirtd in listen mode

echo LIBVIRTD_ARGS=\"--listen\" >> /etc/default/libvirtd

Mask socket/listen based configuration

systemctl mask libvirtd.socket libvirtd-ro.socket libvirtd-admin.socket libvirtd-tls.socket libvirtd-tcp.socket

Configure default libvirtd configuration

echo 'listen_tls=0' >> /etc/libvirt/libvirtd.conf
echo 'listen_tcp=0' >> /etc/libvirt/libvirtd.conf
echo 'tls_port = "16514"' >> /etc/libvirt/libvirtd.conf
echo 'tcp_port = "16509"' >> /etc/libvirt/libvirtd.conf
echo 'mdns_adv = 0' >> /etc/libvirt/libvirtd.conf
echo 'auth_tcp = "none"' >> /etc/libvirt/libvirtd.conf

Restart libvirtd

systemctl restart libvirtd

Disable apparmour on libvirtd

ln -s /etc/apparmor.d/usr.sbin.libvirtd /etc/apparmor.d/disable/
ln -s /etc/apparmor.d/usr.lib.libvirt.virt-aa-helper /etc/apparmor.d/disable/
apparmor_parser -R /etc/apparmor.d/usr.sbin.libvirtd
apparmor_parser -R /etc/apparmor.d/usr.lib.libvirt.virt-aa-helper

SSH Authorized key

ssh public key is located at /var/lib/cloudstack/management/.ssh/id_rsa.pub on your management server

nano ~/.ssh/authorized_keys

paste the code below into ~/.ssh/authorized_keys

Sample SSH public key you will need this ssh public key for your compute node

Do not copy this SSH public key yours will be different

ssh-rsa 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 cloud@ubuntu1