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PostgreSQL – 9.5.4 I read the PostgreSQL directions on how to do a point in time base back. When I execute this command I get an error: pg_basebackup --host=localhost --xlog --gzip --write-recovery-conf --format=t --pgdata=${BACKUPS_HOME}/${BACKUP_DATE_TIME} Error message: pg_basebackup: could not get transaction log end position from server: ERROR: requested WAL segment 00000001000001CD00000055 has already been removed The PostgreSQL listserv recommend using the –xlog-method=stream.
So I tried this: pg_basebackup --host=localhost --xlog-method=stream --gzip --write-recovery-conf --format=t --pgdata=${BACKUPS_HOME}/${BACKUP_DATE_TIME} Error message: pg_basebackup: WAL streaming can only be used in plain mode So I changed it to use the plain format. I now found that I cannot tar or gzip the output. So my next try was to pipe it through gzip. pg_basebackup --host=localhost --xlog-method=stream --write-recovery-conf | gzip ${BACKUPS_HOME}/${BACKUP_DATE_TIME}.gz Now I get the error: pg_basebackup: no target directory specified What do I do next?
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Now what should I try? I don’t want to have to write out the entire backup of my database files in an uncompressed format. That is just crazy and silly.
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Why offer tar and gzip as an option in my first attempt if it won’t work? Is there something I am missing? Any help would be appreciated. Lance Campbell |
