Install iptables on the new ECS master nodes

You must install iptables on all of the additional ECS master nodes.

If your ECS hosts are running the CentOS 8.4, OEL 8.4, or RHEL 8 operating systems, you must install iptables on all the ECS hosts. Run the following command on each additional ECS master node:

yum --setopt=tsflags=noscripts install -y iptables