OpenShift 4 Installation on Libvirt
From Dogtag
Contents
- 1 Overview
- 2 Installing Dependencies
- 3 Environment Variables
- 4 Configuring Permissions
- 5 Enabling IP Forwarding
- 6 Configuring libvirt
- 7 Configuring Firewall
- 8 Configuring Storage Pool
- 9 Configure NetworkManager DNS Overlay
- 10 Getting the Source Code
- 11 Building OpenShift Installer
- 12 Installing OpenShift Cluster
- 13 Removing OpenShift Cluster
- 14 See Also
Overview
This page describes the process to install OpenShift with libvirt based on Libvirt HOWTO.
Installing Dependencies
$ yum install golang-bin gcc-c++ libvirt-devel dep $ yum install libvirt libvirt-devel libvirt-daemon-kvm qemu-kvm $ systemctl enable --now libvirtd
Environment Variables
$ export GOPATH=$HOME/go $ export PATH=$PATH:$GOPATH/bin $ export OS_OUTPUT_GOPATH=1
Configuring Permissions
$ cat <<EOF >> /etc/polkit-1/rules.d/80-libvirt.rules polkit.addRule(function(action, subject) { if (action.id == "org.libvirt.unix.manage" && subject.local && subject.active && subject.isInGroup("wheel")) { return polkit.Result.YES; } }); EOF
Enabling IP Forwarding
Make sure IP forwarding is enabled:
$ sysctl net.ipv4.ip_forward net.ipv4.ip_forward = 1
Configuring libvirt
Edit /etc/libvirt/libvirtd.conf:
listen_tls = 0 listen_tcp = 1 auth_tcp="none" tcp_port = "16509"
Edit /etc/sysconfig/libvirtd:
LIBVIRTD_ARGS="--listen"
Then:
$ systemctl restart libvirtd
Configuring Firewall
Either disable firewall or allow connections from the IP range used by the cluster nodes. See Firewall.
Configuring Storage Pool
Make sure a default storage pool has been defined. See libvirt.
Configure NetworkManager DNS Overlay
Configure NetworkManager to use dnsmasq:
$ echo -e "[main]\ndns=dnsmasq" | tee /etc/NetworkManager/conf.d/openshift.conf
Configure dnsmasq to use the cluster:
$ echo server=/tt.testing/192.168.126.1 | tee /etc/NetworkManager/dnsmasq.d/openshift.conf
Reload NetworkManager:
$ systemctl reload NetworkManager
Getting the Source Code
$ git clone https://github.com/openshift/installer.git $GOPATH/src/github.com/openshift/installer
Building OpenShift Installer
$ cd $GOPATH/src/github.com/openshift/installer $ hack/build.sh
Installing OpenShift Cluster
$ bin/openshift-install create cluster --dir test
Removing OpenShift Cluster
$ bin/openshift-install destroy cluster