minor fix

diff --git a/mailtest-check b/mailtest-check
index 9b41954f1106476707afbf7e4d5202105faca73f..363401780546c8849ded6acedf7242cd0adfbaec 100755 (executable)
--- a/mailtest-check
+++ b/mailtest-check
@@ -96,9 +96,12 @@ pr() {
     cat >>/var/lib/prometheus/node-exporter/mailtest-check.prom.$$
   fi
 }
-pr <<EOF
+# first time we write, overwrite anything existing
+if [[ -e /var/lib/prometheus/node-exporter ]]; then
+  cat >/var/lib/prometheus/node-exporter/mailtest-check.prom.$$ <<EOF
 mailtest_check_found_spamd_pid_bool $(( ${spamdpid:-0} > 0 ))
 EOF
+fi
 e spamdpid: $spamdpid
 if [[ ! $spamdpid ]]; then
   echo $HOSTNAME mailtest spamd pid not found. systemctl status spamassassin: