This is part of my Cassandra learning series.

I did stop developing this part as I had enough to the RHEL/Centos changes that happened a few years ago (they made RHEL closed sourced and (I think) had to archive the Centos channels). This meant additional updates to the yum update repos, which, I will get round to doing. But I’m trying my best to get to the database part (Cassandra, Kafka, beats, log stash etc) and not so much faff with flavours of Linux.

sudo yum update

yum install qemu-guest-agent

yum install net-tools
yum install vim
yum install firewalld
yum -y install openssh-server openssh-clients

systemctl enable firewalld
systemctl start firewalld

firewall-cmd --add-service=ssh --permanent
firewall-cmd --reload

sudo systemctl start sshd


firewall-cmd --permanent --zone=internal --add-source=10.11.0.0/2

This is part of my Cassandra learning series.

vim /etc/ssh/sshd_config
PermitRootLogin yes
sudo systemctl restart sshd

Client machine (my Mac for example)

ssh-keygen
ssh-copy-id -i ansible_host_sshkey.pub root@<IP address>

Ignore the SSH key name. I ended up using the same ssh key for my VMs