change CACHE_DIR env var to SYMBOLS_CACHE_DIR in symbols template (#258)

* change CACHE_DIR env var to SYMBOLS_CACHE_DIR in symbols template

* add note to changelog

Author: DaedalusG

charts/sourcegraph/CHANGELOG.md

@@ -8,6 +8,7 @@ Use `**BREAKING**:` to denote a breaking change
 
 ## Unreleased
 
+- Change CACHE_DIR env var to SYMBOLS_CACHE_DIR in symbols template [#258](https://github.com/sourcegraph/deploy-sourcegraph-helm/pull/258)
 
 ## 4.5.0
 

charts/sourcegraph/templates/symbols/symbols.StatefulSet.yaml

@@ -65,7 +65,7 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: metadata.name
-        - name: CACHE_DIR
+        - name: SYMBOLS_CACHE_DIR
           value: /mnt/cache/$(POD_NAME)
         - name: TMPDIR
           value: /mnt/tmp
@@ -140,4 +140,4 @@ spec:
       resources:
         requests:
           storage: {{ .Values.symbols.storageSize | default "12Gi" }}
-      storageClassName: {{ .Values.storageClass.name }}
+      storageClassName: {{ .Values.storageClass.name }}