Merge pull request #534 from splunk/entrypoint/HEC_connectivity_test

`/entrypoint.sh` HEC connectivity test

package/sbin/entrypoint.sh

@@ -62,12 +62,12 @@ then
   HEC=$(echo '{{- getenv "SPLUNK_HEC_URL" | strings.ReplaceAll "/services/collector" "" | strings.ReplaceAll "/event" "" | regexp.ReplaceLiteral "[, ]+" "/services/collector/event " }}/services/collector/event' | gomplate | cut -d' ' -f 1)
   SC4S_DEST_SPLUNK_HEC_FALLBACK_INDEX=$(cat /opt/syslog-ng/etc/conf.d/local/context/splunk_metadata.csv | grep ',index,' | grep sc4s_events | cut -d, -f 3)
   export SC4S_DEST_SPLUNK_HEC_FALLBACK_INDEX
-  if ! curl -s -S -k "${HEC}?/index=${SC4S_DEST_SPLUNK_HEC_FALLBACK_INDEX}" -H "Authorization: Splunk ${SPLUNK_HEC_TOKEN}" -d '{"event": "HEC TEST EVENT", "sourcetype": "SC4S:PROBE"}'
+  if curl -s -S -k "${HEC}?/index=${SC4S_DEST_SPLUNK_HEC_FALLBACK_INDEX}" -H "Authorization: Splunk ${SPLUNK_HEC_TOKEN}" -d '{"event": "HEC TEST EVENT", "sourcetype": "SC4S:PROBE"}' 2>&1 | grep -v '{"text":"Success","code":0}'
   then
-    echo "SC4S_ENV_CHECK_HEC: Splunk HEC endpoint is unreachable; startup will continue to prevent data loss if this is a transient failure"
+    echo -e "SC4S_ENV_CHECK_HEC: Invalid Splunk HEC URL, invalid token, or other HEC connectivity issue.\nStartup will continue to prevent data loss if this is a transient failure."
   else
-    echo -e "\nSC4S_ENV_CHECK_INDEX: Splunk HEC connection successful; checking indexes"
-    cat /opt/syslog-ng/etc/conf.d/local/context/splunk_metadata.csv  | grep -v sc4s_metrics | grep ',index,' | cut -d, -f 3 | sort -u | while read index ; do export index; echo -e "\nSC4S_ENV_CHECK_INDEX: Checking $index" $(curl -s -S -k "${HEC}?index=${index}" -H "Authorization: Splunk ${SPLUNK_HEC_TOKEN}" -d '{"event": "HEC TEST EVENT", "sourcetype": "SC4S:PROBE"}') ; done
+    echo -e "\nSC4S_ENV_CHECK_HEC: Splunk HEC connection test successful; checking indexes...\n"
+    cat /opt/syslog-ng/etc/conf.d/local/context/splunk_metadata.csv  | grep -v sc4s_metrics | grep ',index,' | cut -d, -f 3 | sort -u | while read index ; do export index; echo -e "SC4S_ENV_CHECK_INDEX: Checking $index" $(curl -s -S -k "${HEC}?index=${index}" -H "Authorization: Splunk ${SPLUNK_HEC_TOKEN}" -d '{"event": "HEC TEST EVENT", "sourcetype": "SC4S:PROBE"}') ; done
   fi
 fi