@@ -1334,20 +1334,26 @@ function yum_install {

     time_start "yum_install"

-    # - We run with LC_ALL=C so string matching *should* be OK

-    # - Exit 1 if the failure might get better with a retry.

-    # - Exit 2 if it is fatal.

-    parse_yum_result='             \

-        BEGIN { result=0 }         \

-        /^YUM_FAILED/ { exit $2 }  \

-        /^No package/ { result=2 } \

-        /^Failed:/    { result=2 } \

-        //{ print }                \

+    # This is a bit tricky, because yum -y assumes missing or failed

+    # packages are OK (see [1]).  We want devstack to stop if we are

+    # installing missing packages.

+    #

+    # Thus we manually match on the output (stack.sh runs in a fixed

+    # locale, so lang shouldn't change).

+    #

+    # If yum returns !0, we echo the result as "YUM_FAILED" and return

+    # that from the awk (we're subverting -e with this trick).

+    # Otherwise we use awk to look for failure strings and return "2"

+    # to indicate a terminal failure.

+    #

+    # [1] https://bugzilla.redhat.com/show_bug.cgi?id=965567

+    parse_yum_result='              \

+        BEGIN { result=0 }          \

+        /^YUM_FAILED/ { result=$2 } \

+        /^No package/ { result=2 }  \

+        /^Failed:/    { result=2 }  \

+        //{ print }                 \

         END { exit result }'

-

-    # The manual check for missing packages is because yum -y assumes

-    # missing or failed packages are OK.

-    # See https://bugzilla.redhat.com/show_bug.cgi?id=965567

     (sudo_with_proxies "${YUM:-yum}" install -y "$@" 2>&1 || echo YUM_FAILED $?) \

         | awk "$parse_yum_result" && result=$? || result=$?