Alpha Cluster Deployment

Architecture

The alpha cluster is deployed under the same architecture described for the test cluster

Deployed servers

The alpha cluster deploys the following instances of each class

1 master/control plane server:

• kubmaster01

2 node/worker servers:

• kubnode01
• kubnode02

1 NFS Storage server:

• kubvol01

Instance information

All of the deployed alpha nodes are one of two type of instances:

• 1GB instance: (kubmaster01, kubvol01)
• 2GB instance: (kubnode01, kubnode02)

All instances were deployed in the same datacenter of the same provider in order to enable private network communication

1GB Instance

• 1GB RAM
• 1 vCPU
• 20GB Storage

2GB Instance

• 2GB RAM
• 1 vCPU
• 30GB Storage

Base system deployment

kubmaster01, kubvol01, kubvol02

All three of these machines are deployed as Fedora 25 instances

Post-deployment configuration

1. Set the system hostname
2. Disable password logins for the root user
3. Install netdata for node monitoring
4. Open firewall port for netdata
5. Apply shared cluster configurations
   • hosts file

hostnamectl set-hostname $host
sed -i 's/^PermitRootLogin yes/PermitRootLogin without-password/' /etc/ssh/sshd_config
systemctl restart sshd
curl -Ss 'https://raw.githubusercontent.com/firehol/netdata-demo-site/master/install-required-packages.sh' >/tmp/kickstart.sh && bash /tmp/kickstart.sh -i netdata-all && rm /tmp/kickstart.sh
git clone https://github.com/firehol/netdata.git --depth=1
( cd netdata && ./netdata-installer.sh --install /opt )
firewallctl zone '' add -p port 19999/tcp
firewallctl reload
git clone [email protected]:CodeForPhilly/ops.git /opt/ops
rm /etc/hosts && ln -s /opt/ops/kubernetes/alpha-cluster/hosts /etc/hosts