Bacula backup error then fix (Authorization key rejected by Storage daemon)

When I initiated backup job, I encountered errors like followings, (from bconsole, bacula.log, and other logging sources)

  • Fatal error: Authorization key rejected by Storage daemon.
  • ERROR in authenticate.c:303 UA Hello from client
  • Fatal error: Bad response to Storage command: wanted 2000 OK storage

It was because of version mismatch across clients (FD) and daemons (SD/Director). I found this problem in half a day. 🙁

This happened when I relocated the storage server to new place for more disk capacity. I did not touch any configuration at all, even with host name unchanged (DNS propagation confirmed with new IP address before the relocation job)

I could realize, all of sudden, that I has simply complied older version of bacula source code for new server. All bacula entities (FD/SD/Director) must run on the same version of binaries!

TLS Configuration for Bacula with CAcert

Two measures (as far as I know) are available for secure data backup with Bacula. One is for communication channel security using TLS across Bacula entities like storage daemon, file daemon, bconsole, director, and so on because Bacula spans multiple hosts over the net. The other is back(ed) up date set encryption with PKI.

Let me share how I figured out TLS configuration with certificates from This configuration can go for any sections (Storage, Director, FileDaemon, …) asking you set TLS glue.

FileDaemon { # this is me
Name = some_name
FDport = 9102
WorkingDirectory = /var/spool/bacula
Pid Directory = /var/run
Maximum Concurrent Jobs = 3

TLS Enable = yes
TLS Require = yes
# TLS Verify Peer = yes
TLS Certificate = location_to_cert_file_you_got_from_cacert
TLS Key = location_to_private_key_you_generated_yourself
TLS CA Certificate File = location_to_root_cert_file_you_got_from_cacert

PKI Signatures = Yes # Enable Data Signing
PKI Encryption = Yes # Enable Data Encryption
PKI Keypair = blah_blah.pem # Public and Private Keys
PKI Master Key = blah_blah_master.cert # ONLY the Public Key