7.6.2-debian-10-r9 release

bitnami/logstash/7/debian-10/Dockerfile

@@ -18,7 +18,7 @@ RUN apt-get update && apt-get upgrade -y && \
 COPY rootfs /
 RUN /opt/bitnami/scripts/logstash/postunpack.sh
 ENV BITNAMI_APP_NAME="logstash" \
-    BITNAMI_IMAGE_VERSION="7.6.2-debian-10-r8" \
+    BITNAMI_IMAGE_VERSION="7.6.2-debian-10-r9" \
     PATH="/opt/bitnami/logstash/bin:/opt/bitnami/java/bin:/opt/bitnami/common/bin:$PATH"
 
 EXPOSE 8080

bitnami/logstash/7/debian-10/prebuildfs/opt/bitnami/scripts/libnet.sh

@@ -21,6 +21,31 @@ dns_lookup() {
     getent ahosts "$host" | awk '/STREAM/ {print $1 }'
 }
 
+#########################
+## Wait for a hostname and return the IP
+# Arguments:
+#   $1 - hostname
+#   $2 - number of retries
+#   $3 - seconds to wait between retries
+# Returns:
+#   - IP address that corresponds to the hostname
+#########################
+wait_for_dns_lookup() {
+    local hostname="${1:?hostname is missing}"
+    local retries="${2:-5}"
+    local seconds="${3:-1}"
+    check_host() {
+      if [[ $(dns_lookup "$hostname") == "" ]]; then
+        false
+      else
+        true
+      fi
+    }
+    # Wait 10 minutes for the host to be ready
+    retry_while "check_host ${hostname}" "$retries" "$seconds"
+    dns_lookup "$hostname"
+}
+
 ########################
 # Get machine's IP
 # Arguments: