Create VMs
For sites
Create two kubernetes clusters aka sites. Each site should have one master and at least three worker nodes with below config -
| VCPUs | 4 |
|---|---|
| Disk | 20 GB |
| RAM | 16 GB |
Configure Kubernetes Clusters
Prepare sites
Note that we are using "coredns" feature gate instead of "kube-dns".
Site 1 (Primary Site)
Follow steps from below link to install a kubernetes cluster using kubeadm, with four VMs created in above step -
https://wiki.onap.org/display/DW/Deploying+Kubernetes+Cluster+with+kubeadm
Steps before "Configuring SDNC-ONAP" should only be followed.
Follow steps from following link to deploy SDN-C: Deploying SDN-C using helm chart
Before deploying SDN-C Cluster on secondary kubernetes cluster, configure the values.yaml file for SDN-C chart to enable GeoRedundancy.
The values.yaml file is what defines the GEO partitioning for the clusters, so myODLCluster should have the IP address of the this Master node and the peerODLCluster should have the IP address of the Master node of the peer cluster.
isPrimaryODLCluster should be true on the Primary Cluster and false on the Secondary Cluster.
Green values are not in the file by default and must be added.
Example of <oom repo>/kubernetes/sdnc/values.yaml
geoEnabled: true
config:
enableClustering: true
myODLCluster: 10.147.114.5
peerODLCLuster: 10.147.112.105
isPrimaryODLCluster: true
Site 2 (Secondary/Backup Site)
Follow steps from below link to install another kubernetes cluster with SDN-C using kubeadm, with four VMs created in above step -
https://wiki.onap.org/display/DW/Deploying+Kubernetes+Cluster+with+kubeadm
Steps before "Configuring SDNC-ONAP" should only be followed.
Follow steps from following link to deploy SDN-C: Deploying SDN-C using helm chart
Before deploying SDN-C Cluster on secondary kubernetes cluster,
a) configure the values.yaml file for SDN-C chart to enable geo redundancy.
The values.yaml file is what defines the GEO partitioning for the clusters, so for the primary cluster myODLCluster should have the IP address of the master node of the primary cluster and the peerODLCluster should have the IP address of the master node of the secondary (standby) cluster. And the secondary cluster, it would be the reverse of the primary cluster.
Example of <oom repo>/kubernetes/sdnc/values.yaml
enableODLCluster: true
geoEnabled: truepeerODLCluster: 10.147.114.5myODLCluster: 10.147.114.140
b) configure the geographic site id for secondary site for MySQL chart as below:
Configure geographic site id for secondary site (site 2) | vi kubernetes/common/mysql/values.yaml Change the following fields with the new value:
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