Create a doc to identify, troubleshoot and fix the replication sync issue on the CNPG cluster
This issue is to write a document on how to identify the similar issue faced here: sylva-core#2357 (closed) i.e. replication sync issue on CNPG cluster which ends up accumulation of WAL files and results in chocking up the whole PG_DATA disk which further brings all the pods in crashloopbackoff state.