Adding upstream version 20210828.upstream/20210828

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 38 insertions, 0 deletions

diff --git a/knot-resolver/bin/kresd-cache-clear b/knot-resolver/bin/kresd-cache-clear
new file mode 100755
index 0000000..5eadee0
--- /dev/null
+++ b/knot-resolver/bin/kresd-cache-clear
@@ -0,0 +1,38 @@
+#!/bin/sh
+
+set -e
+
+HOSTS="${*}"
+
+if [ -z "${HOSTS}" ]
+then
+	echo "Usage: ${0} localhost|[HOST1 HOST2 ...]" >&2
+	exit 1
+fi
+
+for HOST in ${HOSTS}
+do
+	case "${HOST}" in
+		localhost)
+			NUMBER="$(systemctl | grep -c 'kresd@[0-9].service')"
+
+			for NUMBER in $(seq 1 "${NUMBER}")
+			do
+				echo "Flushing localhost, resolver ${NUMBER}"
+				echo "cache.clear()" | sudo socat - UNIX-CONNECT:/run/knot-resolver/control/"${NUMBER}"
+			done
+			;;
+
+		*)
+			NUMBER="$(ssh "${HOST}" sudo systemctl | grep -c 'kresd@[0-9].service')"
+
+			for NUMBER in $(seq 1 "${NUMBER}")
+			do
+				echo "Flushing ${HOST}, resolver ${NUMBER}"
+				echo "cache.clear()" | ssh "${HOST}" sudo socat - UNIX-CONNECT:/run/knot-resolver/control/"${NUMBER}"
+			done
+			;;
+	esac
+done
+
+echo