Use set -e for validation-scripts/all-nodes.sh

Update this script to use 'set -e' for all commands except
the ping checks themselves which we allow to fail so we
can give enhanced output.

This resolves an issue where some commands could fail and cause
an undetectable error (the scripted exits with success) thus causing
a case where Heat won't detect any network errors at all. This
was recently the case with git commit 45be848 where we switched
to use python -c 'import ipaddr' which wasn't even installed as a
library on our overcloud nodes, thus causing all network validations
to silently fail.

Change-Id: I40ed6a537136e866357cc0d9304e905afdd28522
Depends-On: Ia617f44b4673b89202e5e5cdcac9b50f46b3e6c8
Related-bug: #1551048

1 files changed, 5 insertions, 0 deletions

diff --git a/validation-scripts/all-nodes.sh b/validation-scripts/all-nodes.sh
index ae1fddf3..31b4d6bf 100644
--- a/validation-scripts/all-nodes.sh
+++ b/validation-scripts/all-nodes.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+set -e
 
 # For each unique remote IP (specified via Heat) we check to
 # see if one of the locally configured networks matches and if so we
@@ -17,11 +18,13 @@ function ping_controller_ips() {
       in_network=$(python -c "import ipaddr; net=ipaddr.IPNetwork('$LOCAL_NETWORK'); addr=ipaddr.IPAddress('$REMOTE_IP'); print(addr in net)")
       if [[ $in_network == "True" ]]; then
         echo -n "Trying to ping $REMOTE_IP for local network $LOCAL_NETWORK..."
+        set +e
         if ! $ping -W 300 -c 1 $REMOTE_IP &> /dev/null; then
           echo "FAILURE"
           echo "$REMOTE_IP is not pingable. Local Network: $LOCAL_NETWORK" >&2
           exit 1
         fi
+        set -e
         echo "SUCCESS"
       fi
     done
@@ -34,6 +37,7 @@ function ping_controller_ips() {
 # multiple gateways.
 function ping_default_gateways() {
   DEFAULT_GW=$(ip r | grep ^default | cut -d " " -f 3)
+  set +e
   for GW in $DEFAULT_GW; do
     echo -n "Trying to ping default gateway ${GW}..."
     if ! ping -c 1 $GW &> /dev/null; then
@@ -42,6 +46,7 @@ function ping_default_gateways() {
       exit 1
     fi
   done
+  set -e
   echo "SUCCESS"
 }