balancer01

astra-admin@balancer01:~$ sudo apt update
astra-admin@balancer01:~$ sudo apt install haproxy pacemaker corosync haveged -y
astra-admin@balancer01:~$ sudo corosync-keygen
Corosync Cluster Engine Authentication key generator.
Gathering 2048 bits for key from /dev/urandom.
Writing corosync key to /etc/corosync/authkey.
astra-admin@balancer01:~$ sudo apt-get remove --purge haveged -y
astra-admin@balancer01:~$ sudo apt-get clean
astra-admin@balancer01:~$ sudo scp /etc/corosync/authkey astra-admin@balancer02:/tmp

astra-admin@balancer02:~$ sudo apt update
astra-admin@balancer02:~$ sudo apt install haproxy corosync pacemaker -y
astra-admin@balancer02:~$ sudo mv /tmp/authkey /etc/corosync
astra-admin@balancer02:~$ sudo chown root: /etc/corosync/authkey
astra-admin@balancer02:~$ sudo chmod 400 /etc/corosync/authkey

astra-admin@balancer01:~$ sudo nano /etc/corosync/corosync.conf