skip config backup on initial deployment

roles/ydbd_config/tasks/main.yml

@@ -12,6 +12,7 @@
   command: "{{ ydb_dir }}/home/backup_config.sh {{ ydb_config_backup }}"
   become: true
   become_user: ydb
+  when: ydb_config_backup is defined
 
 - name: Copy the TLS ca.crt
   copy: src={{ ydb_tls_dir }}/ca.crt dest={{ ydb_dir }}/certs/ca.crt

roles/ydbd_config/templates/backup_config.j2

@@ -7,6 +7,11 @@ set +u
 YDB_DIR="{{ ydb_dir }}"
 BACKUP_DIR=${YDB_DIR}/reserve/"$1"
 
+if [ -z "$1" ] || [ "$1" = "none" ]; then
+  echo "$0: skipping configuration backup" >&2
+  exit 0
+fi
+
 if [ -d ${BACKUP_DIR} ]; then
   echo "$0: target directory already exists" >&2
   exit 1

rolling-static.yaml

@@ -0,0 +1,5 @@
+# Rolling restart for the configured static nodes
+
+- hosts: ydbd_static
+  roles:
+  - role: ydbd_rolling_static

run-rolling-static.sh

@@ -0,0 +1,3 @@
+#! /bin/sh
+
+ansible-playbook -b -i hosts rolling-static.yaml