Percona AWS RDS Database Backup

Question

I am trying to take a single database backup from AWS RDS through Percona XtraBackup. But it is failing in identifying the rdsdata. I am using Mac.

The command I used-

xtrabackup --host='awsserv-staging.fbyvwz.eu-east-2.rds.amazonaws.com' --port=3306 --user='myusername' --password='myPassword' --backup --databases=db-purchases --target-dir=/Users/myuserdir/percona-xtrabackup --no-lock --datadir=innodb_data_home_dir=/rdsdbdata/db/innodb;

The error I am getting is -

xtrabackup: recognized server arguments: --datadir=innodb_data_home_dir=/rdsdbdata/db/innodb

xtrabackup: recognized client arguments: --host=awsserv-staging.fbyvwz.eu-east-2.rds.amazonaws.com --port=3306 --user=myusername --password=* --backup=1 --databases=db-purchases --target-dir=/Users/myuserdir/percona-xtrabackup --no-lock=1

/opt/homebrew/Cellar/percona-xtrabackup/8.0.27-19/libexec/bin/xtrabackup version 8.0.27-19 based on MySQL server 8.0.27 macos12.2 (arm64) (revision id: 50dbc8dadda) 220510 15:50:47 version_check Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_group=xtrabackup;host=awsserv-staging.fbyvwz.eu-east-2.rds.amazonaws.com;port=3306' as 'myusername' (using password: YES).

220510 15:50:48 version_check Connected to MySQL server

220510 15:50:48 version_check Executing a version check against the server...

220510 15:50:48 version_check Done.

220510 15:50:48 Connecting to MySQL server host: awsserv-staging.fbyvwz.eu-east-2.rds.amazonaws.com, user: myusername, password: set, port: 3306, socket: not set Using server version 8.0.23

Warning: option 'datadir' points to nonexistent directory 'innodb_data_home_dir=/rdsdbdata/db/innodb'

Warning: MySQL variable 'datadir' points to nonexistent directory '/rdsdbdata/db/'

Warning: option 'datadir' has different values:

'innodb_data_home_dir=/rdsdbdata/db/innodb' in defaults file

'/rdsdbdata/db/' in SHOW VARIABLES

xtrabackup: Can't change dir to 'innodb_data_home_dir=/rdsdbdata/db/innodb' (OS errno 2 - No such file or directory) xtrabackup: cannot my_setwd innodb_data_home_dir=/rdsdbdata/db/innodb

The data home directory was changed to /rdsdbdata/db, even though no luck. Could someone please help.