<yambe:breadcrumb self="Setup KVM Host">CentOS 8.x Cloudstack 4.15|Cloudstack 4.15</yambe:breadcrumb>

CentOS 8.x Cloudstack 4.15 Setup KVM host

To setup Cloudstack 4.15 KVM host use following steps:

Initialize server using CentOS 8.x Cloudstack 4.15 Initialize infrastructure server
Create bridge interface cloudbr0, cloudbr1, etc. based on interfaces to be used for cloud setup.
Refer: CentOS 8.x Creating bridge interfaces (br0) for virtual hosts to use shared interface
In case of bridges you can consider adding following additional configuration:
HOTPLUG=no

DELAY=0

STP=no

Install virt packages

dnf -y module install virt
dnf -y install virt-install virt-viewer

Change below parameters in '/etc/libvirt/libvirtd.conf' file

listen_tls = 0
listen_tcp = 1
tcp_port = "16509"
auth_tcp = "none"

Update '/etc/sysconfig/libvirtd' as follows:

#LIBVIRTD_ARGS="--timeout 120"
LIBVIRTD_ARGS="--listen"

Run below command for enable --listen for libvirtd service so that it works in traditional mode instead of systemd socket activation mode (Refer '<tt<man libvirtd')
```
systemctl mask libvirtd.socket libvirtd-ro.socket libvirtd-admin.socket libvirtd-tls.socket libvirtd-tcp.socket
```

Start and enable the libvirtd service

systemctl daemon-reload
systemctl start libvirtd
systemctl enable libvirtd
systemctl status libvirtd

Configure cloudstack repository by creating '/etc/yum.repos.d/cloudstack.repo'

[cloudstack]
name=cloudstack
baseurl=http://download.cloudstack.org/centos/$releasever/4.15/
enabled=1
gpgcheck=0

Install cloudstack-management package:
```
dnf -y install cloudstack-agent
```
Mount primary storage on appropriate location on all hosts eg /mnt/primary (Except in case of NFS)
Enable CloudStack agent
```
systemctl enable cloudstack-agent.service
```
Note that service would fail to start at this stage. It would get started while adding the KVM host to cloudstack

<yambe:breadcrumb self="Setup KVM Host">CentOS 8.x Cloudstack 4.15|Cloudstack 4.15</yambe:breadcrumb>

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