Create script to restore 3.9 configs into container

wazuh/migration/02-volume_loader.sh

@@ -0,0 +1,73 @@
+#!/bin/bash
+
+source /data_dirs.env
+
+### Sources (container paths where 3.9_volumes are mounted)
+OSSEC_BACKUP=/migration/ossec_backup/
+FILEBEAT_BACKUP=/migration/filebeat_backup/
+FILEBEAT_LIB_BACKUP=/migration/filebeat-lib_backup/
+POSTFIX_BACKUP=/migration/postfix_backup/
+
+### Destinations (container paths where files and folders will be copied)
+WAZUH_INSTALLATION_PATH=/var/ossec/
+FILEBEAT_INSTALLATION_PATH=/etc/filebeat/
+FILEBEAT_LIB_INSTALLATION_PATH=/var/lib/filebeat/
+POSTFIX_INSTALLATION_PATH=/etc/postfix/
+
+### Auxiliar methods
+
+print() {
+    echo -e $1
+}
+
+error_and_exit() {
+    echo "Error executing command: '$1'."
+    echo 'Exiting.'
+    exit 1
+}
+
+exec_cmd() {
+    eval $1 > /dev/null 2>&1 || error_and_exit "$1"
+}
+
+exec_cmd_stdout() {
+    eval $1 2>&1 || error_and_exit "$1"
+}
+
+### Restoring directories in "data_dirs.env" from 3.9 volume to container
+
+for ossecdir in "${DATA_DIRS[@]}"; do
+    if [[ ! -e "${WAZUH_INSTALLATION_PATH}${ossecdir}" ]]
+    then
+        print "BACKUP: The folder ${WAZUH_INSTALLATION_PATH}${ossecdir} doesn't exists in the container. Creating it..."
+        exec_cmd "mkdir -p ${WAZUH_INSTALLATION_PATH}${ossecdir}"
+    fi
+    if [[ -d "${WAZUH_INSTALLATION_PATH}${ossecdir}" ]]; then
+        print "BACKUP: Copying data from folder ${OSSEC_BACKUP}${ossecdir} in 3.9 volume to ${WAZUH_INSTALLATION_PATH}${ossecdir}"
+        exec_cmd "cp -pr ${OSSEC_BACKUP}${ossecdir}/* ${WAZUH_INSTALLATION_PATH}${ossecdir}"
+    elif [[ -f "${WAZUH_INSTALLATION_PATH}${ossecdir}" ]]; then
+        print "BACKUP: Copying file ${OSSEC_BACKUP}${ossecdir} in 3.9 volume to ${WAZUH_INSTALLATION_PATH}${ossecdir}"
+        exec_cmd "cp -pr ${OSSEC_BACKUP}${ossecdir} ${WAZUH_INSTALLATION_PATH}${ossecdir}"
+    fi
+done
+
+### Restoring Filebeat from backup volume to current installation path
+
+if [[ -d "${FILEBEAT_BACKUP}" ]]; then
+    print "BACKUP: Copying Filebeat configuration from ${FILEBEAT_BACKUP} to ${FILEBEAT_INSTALLATION_PATH}"
+    exec_cmd "cp -pr ${FILEBEAT_BACKUP}* ${FILEBEAT_INSTALLATION_PATH}"
+fi
+
+### Restoring Filebeat lib from backup volume to current installation path
+
+if [[ -d "${FILEBEAT_LIB_BACKUP}" ]]; then
+    print "BACKUP: Copying Filebeat Library configuration from ${FILEBEAT_LIB_BACKUP} to ${FILEBEAT_LIB_INSTALLATION_PATH}"
+    exec_cmd "cp -pr ${FILEBEAT_LIB_BACKUP}* ${FILEBEAT_LIB_INSTALLATION_PATH}"
+fi
+
+### Restoring Postfix from backup volume to current installation path
+
+if [[ -d "${POSTFIX_BACKUP}" ]]; then
+    print "BACKUP: Copying Postfix Library configuration from ${POSTFIX_BACKUP} to ${POSTFIX_INSTALLATION_PATH}"
+    exec_cmd "cp -pr ${POSTFIX_BACKUP}* ${POSTFIX_INSTALLATION_PATH}"
+fi