Linux Agent certificate authentication to VBR fails

[TimoKohlbacher]

Hi,

I have a problem with two of our Linux Hardware Servers.
From one day to another, Backups failed, with:

Error: Failed to execute agent management command startBackup. Reconnectable protocol device was closed. Unable to authenticate on backup server xxxxxxx:10006; xxxxx:10006; xxxxx:10006. Failed to establish connection to xxxx:10006; xxxxx:10006; xxxxx:10006 Failed to connect to Veeam Backup & Replication server by certificate.

Looking in the job logs on the Linux Agent shows:

Code: Select all

R |Reconnectable protocol device was closed.
[11.03.2021 02:41:11.708] <140171921306112> prtcl  | >>  |--tr:Failed to read data from throttled device.
[11.03.2021 02:41:11.708] <140171921306112> prtcl  | >>  |--tr:in virtual std::streamsize io::CThrottledIoDev::read(byte_t*, size_t) at /mnt/Sources/CommonLib/io/ThrottledIoDev.cpp:37
[11.03.2021 02:41:11.708] <140171921306112> prtcl  | >>  |--tr:CSslVbrConnection: Failed to perform handshake with VBR server.
[11.03.2021 02:41:11.708] <140171921306112> prtcl  | >>  |--tr:in void vmbplatform::vbr::CSslVbrConnection::ProtocolHandShake(vmbplatform::CBinaryStream&) at /mnt/Sources/VmbPlatformLib/vmbplatform/vbr/conn/SslVbrConnection.cpp:193
[11.03.2021 02:41:11.708] <140171921306112> prtcl  | >>  |Unable to authenticate on backup server xxxxxx:10006; xxxxxx:10006; xxxxx:10006.
[11.03.2021 02:41:11.708] <140171921306112> prtcl  | >>  |--tr:in io::io_dev_ptr_t vmbplatform::vbr::CSslVbrConnection::Authenticate(io::io_dev_ptr_t) at /mnt/Sources/VmbPlatformLib/vmbplatform/vbr/conn/SslVbrConnection.cpp:175
[11.03.2021 02:41:11.708] <140171921306112> prtcl  | >>  |Failed to establish connection to xxxxx; srv-isis:10006; xxxxxx:10006
[11.03.2021 02:41:11.708] <140171921306112> prtcl  | >>  |--tr:in void vmbplatform::vbr::CSslVbrConnection::EstablishConnectProc(io::io_dev_ptr_t) at /mnt/Sources/VmbPlatformLib/vmbplatform/vbr/conn/SslVbrConnection.cpp:143
[11.03.2021 02:41:11.708] <140171921306112> prtcl  | >>  |--tr:Thread [Establish connect to VBR xxxxx:10006; xxxxxx:10006; xxxxx:10006 by certificate.](140485410674432) failed.
[11.03.2021 02:41:11.708] <140171921306112> prtcl  | >>  |Failed to connect to Veeam Backup & Replication server by certificate.

I tried everything i can think of... reinstalling the client, rebooting, verifying the trusted host list etc.The self signed certificate of the VBR Server has not been changed, and other Linux Clients are still working.

Where is the VBR Certificate stored in the agent? So I can verify it is there?
Anyone got any other ideas?
Googling after the error messages yields ZERO results..

[TimoKohlbacher]

okay.. I think I found the problem..
the agent updated itself from 4.0.1 to 5.0.0 . and the problem came with the new agent. Maybe out VBR is not up to date enough to communicate with the new agent? After deinstalling 5.0.0 and reinstalling 4.0.1 everything works fine again.

[Gostev]

V5 agents require VBR11 or later.