Unable to start a migration using Plesk Migrator on Linux: rsync ERROR cannot stat destination Permission denied

Symptoms

• Unable to start a migration, one of the following error messages are displayed in Plesk Migrator:

  PLESK_ERROR: Failed to fetch basic information about resellers, clients and domains data from source servers
  Cause: Command execution failed on the local server with non-zero exit code.
  command: rsync -r –chmod=Fu=r,Du=rwx,go= –timeout=30 -e ‘ssh -i /root/.ssh/id_rsa -p 22 -o PasswordAuthentication=no -o StrictHostKeyChecking=no -o GSSAPIAuthentication=no’ /usr/local/psa/admin/plib/modules/panel-migrator/backend/lib/python/parallels/plesk/source/legacy/extras/plesk_17_0_pmm_shared/ [email protected]:/root/plesk_migrator/plesk_migrator-v1c5tj81ez33fks3axsor39rbz5o4ac3/pmm_agent
  exit code: 12
  stdout:
  stderr: rsync: ERROR: cannot stat destination “/root/plesk_migrator/plesk_migrator-v1c5tj81ez33fks3axsor39rbz5o4ac3/pmm_agent”: Permission denied (13)
  rsync error: errors selecting input/output files, dirs (code 3) at main.c(554) [receiver=3.0.6]
  rsync: connection unexpectedly closed (247 bytes received so far) [sender]
  rsync error: error in rsync protocol data stream (code 12) at io.c(226) [sender=3.1.2]
  That is a critical error, migration was stopped.

  PLESK_ERROR: Failed to check that all required components are installed on source Plesk
  Cause: Command execution failed on the local server with non-zero exit code.
  command: rsync -r –chmod=Fu=r,Du=rwx,go= -e ‘ssh -i /usr/local/psa/var/modules/panel-migrator/sessions/20170422134426/ssh-keys/id_rsa.203.0.113.2 -p 22 -o PasswordAuthentication=no -o StrictHostKeyChecking=no -o GSSAPIAuthentication=no’ /usr/local/psa/admin/plib/modules/panel-migrator/backend/lib/python/parallels/plesk/source/legacy/extras/plesk_12_5_pmm_shared/ [email protected]:/root/plesk_migrator/plesk_migrator-5e6lcbrmc6lcpd81on8iidsrh80zjoxl/pmm_agent
  exit code: 255
  stdout:
  stderr: Permission denied (publickey,password).
  rsync: connection unexpectedly closed (0 bytes received so far) [sender]
  rsync error: unexplained error (code 255) at io.c(600) [sender=3.0.6]
  That is a critical error, migration was stopped.

• Migration via CLI returns the same error messages

• SELinux status is in Enforcing mode on the source server:

  # getenforce
  Enforcing

• The Rsync SELinux boolean rsync_full_access is disabled or not available (CentOS 6):

  # getsebool -a | grep rsync_full_access
  rsync_full_access –> off

• The following errors are shown in the Audit log file /var/log/audit/audit.log:

  # egrep “comm=”rsync”” /var/log/audit/audit.log
  type=AVC msg=audit(1591887406.036:11075811): avc: denied { create } for pid=16205 comm=”rsync” name=”.AgentConfig.pm.hePViC” scontext=system_u:system_r:rsync_t:s0 tcontext=system_u:object_r:admin_home_t:s0 tclass=file

Cause

SELinux blocks Rsync command on source or target servers.

Resolution

Note: Apply this solution to the source and target servers meanwhile the Plesk migration is ongoing

Allow the Rsync execution temporarily in SELinux:

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