Dear Georg,
Many thanks for your help. I changed the max_wal_senders to 10 and
restarted the database. Since I have a small server I did not want to
put it higher then mentioned in the documentation of Barman 2.3. Thought
I did not need to. Now the backup is made (took 4 minutes).
Kind regards,
Marco
Op 18-03-18 om 12:54 schreef Georg H.:
> Hello Marco,
>
>
> Am 18.03.2018 um 12:21 schrieb Marco DE BOOIJ:
>> After my upgrade of PostgreSQL 9.6 to 10.3 the backups through barman
>> fails. There is not much data change in the database but I still do
>> not want to loose the data. I have verified the configuration and all
>> seems correct for Barman and PostgreSQL . I have tried to find the
>> answer on the internet but I was not able to find it. Both Barman and
>> PostgreSQL run on the same server.
>>
> ...
>> When I run 'barman backup all' I get the following output:
>>
>> ERROR: Backup failed copying files.
>> DETAILS: data transfer failure on directory
>> '/srv/share/backup/barman/maat/base/20180317T233002/data'
>> pg_basebackup error:
> ...
>> pg_basebackup: could not connect to server: FATAL: number of
>> requested standby connections exceeds max_wal_senders (currently 2)
> ....
>> maat 20180317T233002 - FAILED
>>
> Have you tried so set max_wal_senders to a higher value? iirc the
> default value for postgresql10 is max_wal_senders = 10
>> In the barman.log there are the following lines around this message
>> (indicated with ....):
>>
> also worth checking is your servers barman conf file
> (/etc/barman.d/xxx.conf) which has a line at the end pointing to the
> postgres binaries path to use.
> What means that you have to have postgresql-client package version 10
> on your barman server and have to change your config pointing to the
> new path.
>
> kind regards
> Georg
>