Ensure that open file descriptor limit is set correctly on startup (#355)

* Set open file descriptors limit to 65536 in initialize,sh script (#1)

* Use safer ulimit increase

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Co-authored-by: Firas Medini <mdnfiras@gmail.com>

charts/qdrant/templates/configmap.yaml

@@ -7,6 +7,11 @@ metadata:
 data:
   initialize.sh: |
     #!/bin/sh
+    echo "Soft limits"
+    ulimit -a -S
+    echo "Hard limits"
+    ulimit -a -H
+    ulimit -n $(ulimit -Hn)
     SET_INDEX=${HOSTNAME##*-}
     {{- if and (.Values.snapshotRestoration.enabled) (eq (.Values.replicaCount | quote)  (1 | quote)) }}
     echo "Starting initializing for pod $SET_INDEX and snapshots restoration"