I have build new ssh-key on the standby server but it doesn't work...
primary server :
.... debug2: we sent a publickey packet, wait for reply debug3: receive packet: type 51 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic debug1: Offering ECDSA public key: /var/lib/pgsql/.ssh/id_ecdsa debug3: send_pubkey_test debug3: send packet: type 50 debug2: we sent a publickey packet, wait for reply debug3: receive packet: type 51 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic debug1: Trying private key: /var/lib/pgsql/.ssh/id_ed25519 debug3: no such identity: /var/lib/pgsql/.ssh/id_ed25519: No such file or directory debug2: we did not send a packet, disable method debug1: No more authentication methods to try. Permission denied (publickey,gssapi-keyex,gssapi-with-mic). -bash-4.2$
standby server :
Permission denied (publickey,gssapi-keyex,gssapi-with-mic).^M rsync: connection unexpectedly closed (0 bytes received so far) [sender] rsync error: unexplained error (code 255) at io.c(226) [sender=3.1.2] 2018-10-31 04:58:59.005 EDT [9938] FATAL: archive command failed with exit code 255 2018-10-31 04:58:59.005 EDT [9938] DETAIL: The failed archive command was: rsync -a pg_wal/000000010000000000000001 postgres@10.0.2.159:/home/postgresql_wal/000000010000000000000001 2018-10-31 04:58:59.007 EDT [15184] LOG: archiver process (PID 9938) exited with exit code 1