# How can rsync connect to other nodes without user and password.

**URL:** <https://forums.percona.com/t/how-can-rsync-connect-to-other-nodes-without-user-and-password/7765>\
**Category:** Other MySQL® Questions\
**Created:** [July 10, 2020, 8:31am UTC](https://forums.percona.com/t/how-can-rsync-connect-to-other-nodes-without-user-and-password/7765 "2020-07-10T08:31:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![charlesjuy](https://avatars.discourse-cdn.com/v4/letter/c/2bfe46/32.png) [@charlesjuy](https://forums.percona.com/u/charlesjuy)\
**Post date:** [July 10, 2020, 8:31am UTC](https://forums.percona.com/t/how-can-rsync-connect-to-other-nodes-without-user-and-password/7765/1 "2020-07-10T08:31:38Z")

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I am new to the MariaDB Galera cluster. Questions:  
1) How can SST “rsync” method sync files from the donor to the joiner without using a username and password?  
2) How can SST “mariabackup” method stream the file from the donor to the joiner? Is it also using rsync&nbsp;&nbsp;  
Thanks.

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**Author:** ![yves.trudeau](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/yves.trudeau/32/2825_2.png) [@yves.trudeau](https://forums.percona.com/u/yves.trudeau)\
**Post date:** [July 24, 2020, 7:10am UTC](https://forums.percona.com/t/how-can-rsync-connect-to-other-nodes-without-user-and-password/7765/2 "2020-07-24T07:10:26Z")

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Hi,These days, you shouldn’t use the rsync SST method, it locks the database (and the then whole cluster) for the duration of the SST.&nbsp; The MariaBackup and Xtrabackup, those 2 are very similar, are non locking and streams the backup to the joiner node using netcat (nc) or socat on port 4444/TCP by default.