...
AntiAffinity between DB Pods
Now lets see how the codes looks like for configuring the Anti-Affinity for VNFSDK-POSTGRESS PODs (just for the POC purpose we increased the replica count to 4)
...
This snippet of values.yaml under vnfsdk-postgress dir ensures that the db pods of vnfsdk-postgress will never reside on the same nodes
Affinity for DB and App pods and Antiaffinity for APP pods
Now for the Affinity between the DBand the APPpods and also the antiaffinity between APP pods we used the below code snippet in values.yaml of vnfsdk
...
When the code was deployed the result was as below
default goodly-squid-vnfsdk-556f59ccd9-jx9q8 1/1 Running 0 32s 10.42.81.107 k8s-4 default goodly-squid-vnfsdk-556f59ccd9-n95jh 1/1 Running 0 32s 10.42.73.55 k8s-2 default goodly-squid-vnfsdk-556f59ccd9-snlzc 1/1 Running 0 32s 10.42.233.242 k8s-3 default goodly-squid-vnfsdk-556f59ccd9-xtzff 1/1 Running 0 32s 10.42.129.25 k8s-1 default goodly-squid-vnfsdk-postgres-78d58775c4-98dr9 1/1 Running 0 32s 10.42.130.80 k8s-4 default goodly-squid-vnfsdk-postgres-78d58775c4-9cf5g 1/1 Running 0 32s 10.42.222.207 k8s-3 default goodly-squid-vnfsdk-postgres-78d58775c4-9rnhh 1/1 Running 0 32s 10.42.50.224 k8s-1 default goodly-squid-vnfsdk-postgres-78d58775c4-s4l8r 1/1 Running 0 32s 10.42.49.238 k8s-2
Replica sets on different nodes with the APP and DB on the same node while the APP and DB are also never colocated on the same node
...