Openshift 4.3 Baremetal Installation - openshift

Question

1. What I've tried
I want to make ocp cluster (actually, single node-all in one) like this blog
link : openshift.com/blog/revamped-openshift-all-in-one-aio-for-labs-and-fun
and I also referred to official document : Installing bare metal
So, What I have tried is like this :
(I used VirtualBox to make four vm)
- 1 bastion
- 1 dns
- 1 master
- 1 bootstrap
These vm are in the same network.
First, I made ignition file to boot master and bootstrap node.
install-config.yaml that I used :
apiVersion: v1
baseDomain: hololy-local.com
compute:
- hyperthreading: Enabled
name: worker
replicas: 0
controlPlane:
hyperthreading: Enabled
name: master
replicas: 1
metadata:
name: test
networking:
clusterNetwork:
- cidr: 10.128.0.0/14
hostPrefix: 23
networkType: OpenShiftSDN
serviceNetwork:
- 172.30.0.0/16
platform:
none: {}
fips: false
pullSecret: '{"auths": ...}'
sshKey: 'ssh-ed25519 AAAA...'
I only changed baseDomain, master's number of replica, pullSecret and sshKey.
After Making ignition files, I started to boot bootstrap node and master node with iso file.
bootstrap node was successfully installed, but problem happens master node.
2. Details
Before starting Master node installation, I have to set up dns. Because unlike bootstrap's installation, Master node requests domain info during installation.
ip address
dns : 192.168.56.114
master : 192.168.56.150
DNS Zone is like this :
And I started to set up master node using this parameters.
coreos.inst.install_dev=sda
coreos.inst.image_url=http://192.168.56.114/rhcos438.x86_64.raw.gz
coreos.inst.ignition_url=http://192.168.56.114/master.ign
ip=192.168.56.150::192.168.56.254:255.255.255.0:core0.hololy-local.com:enp0s3:none nameserver=192.168.56.114
Installation finished successfully, but when it boots without boot disk(.iso) Error comes out.
It seems to trying to find master configuration file in api-int.aio.hololy-local.com:22623, and It connects ip address that I wrote in the zone file.
But strangely, The connection refused continuously.
Since I set the static ip when rhcos installation, so Ping test works successfully to 192.168.56.150.
I think 22623 port was blocked. But How can I open the port before OS boot?...
I don't know how to I solve it.
Thanks.

Answer 1

I solved it.
The differences between installation of 3.11 and 4.x is whether LB's necessary.
In 4.x LB is necessary. so you should set up LB.
In my situation, I set LB by nginx, and the sample is like this:
stream{
upstream ocp_k8s_api {
#round-robin;
server 192.168.56.201:6443; #bootstrap
server 192.168.56.202:6443; #master1
server 192.168.56.203:6443; #master2
server 192.168.56.204:6443; #master3
}
server {
listen 6443;
proxy_pass ocp_k8s_api;
}
upstream ocp_m_config {
#round-robin;
server 192.168.56.201:22623; #bootstrap
server 192.168.56.202:22623; #master1
server 192.168.56.203:22623; #master2
server 192.168.56.204:22623; #master3
}
server {
listen 22623;
proxy_pass ocp_m_config;
}
upstream ocp_http {
#round-robin;
server 192.168.56.205:80; #worker1
server 192.168.56.206:80; #worker2
}
server{
listen 80;
proxy_pass ocp_http;
}
upstream ocp_https {
#round-robin;
server 192.168.56.205:443; #worker1
server 192.168.56.206:443; #worker2
}
server{
listen 443;
proxy_pass ocp_https;
}
}
thanks.