create_cluster: Avoid -e exit when cluster isn't in hosts file

Signed-off-by: Martin Schwenke <martin@meltin.net>

diff --git a/examples/create_cluster.sh b/examples/create_cluster.sh
index c030bf7758400e7b877b95debd2e8b5eef9fbcaf..fcac626ae2afd357989a9fbcab7c2ac3be9bd283 100755 (executable)
--- a/examples/create_cluster.sh
+++ b/examples/create_cluster.sh
@@ -48,7 +48,7 @@ update_hosts_file ()
     pat="# autocluster ${cluster}\$|[[:space:]]${cluster}(n|base)[[:digit:]]+"
 
     t="/etc/hosts.${cluster}"
-    grep -E "$pat" /etc/hosts >"$t"
+    grep -E "$pat" /etc/hosts >"$t" || true
     if diff -B "$t" "tmp/hosts.${cluster}" >/dev/null ; then
 rm "$t"
 return