I see that pods are getting evicted due to ephemeral storage but when i looked at the nodes, has sufficient disk availability.
Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 9983232 6479112 3487736 66% /
Following is the exact message from evicted pod
The node was low on resource: ephemeral-storage. Container nginx was using 228Ki, which exceeds its request of 0. Container istio-proxy was using 680Ki, which exceeds its request of 0.