Add --upload.file_regex parameter #293
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There already was a switch in place for the Python executable, but both the readlink and cp commands use flags not present on the default macOS binaries. This commit adds a check upfront and aborts with a message about you needing the coreutils package from homebrew to get the GNU variants of both commands.
Allows specifying a custom location of the "tar" command to use.
Also, the flags sent to "tar" are sent individually (`tar -cf` becomes `tar -c -f`).
This allows easily customizing how the archiving is performed without having to add
lots of new options. For example, you could encrypt backup data via a simple shell script
and specify it for --archive.tar.binary:
```
#!/bin/bash
gpg_pubkey_id=XXXXXXX
new_args=""
while [ "${#}" -gt 0 ]; do
case "$1" in
-f)
shift;
original_output_file="${1}"
shift
new_args="${new_args} --to-stdout"
;;
*)
new_args="${new_args} ${1}"
shift
;;
esac
done
tar ${new_args} | gpg --always-trust --encrypt --recipient ${gpg_pubkey_id} -z 0 --output ${original_output_file}
```
This has several advantages:
* Backups are never written to disk unencrypted
* Encryption can be done in one go, instead of causing the potentially heavy additional
I/O a separate encryption step would incur.
* It's transparent for the upload stages, so you can still benefit from the integrated
S3 (or other) uploads.
The S3 uploader fails if bucket permissions are restricted to only allow accessing certain prefixes in a bucket. The default behavior for boto's "get_bucket()" is to "validate" it by accessing the bucket's root, needlessly breaking the uploader even though all necessary permissions might be present. This patch adds a new command line switch --upload.s3.skip_bucket_validation to disable this behavior.
We have seen cases where due to aborts in earlier steps the upload stage would eagerly upload lots of files that were supposed to go into an archive to S3. This new optional parameter allows specifying a regular expression for file names that actually should be uploaded, regardless of what else might be in the source directory. For example specify --upload.file_regex='.+\\.tar$' to ensure only tars are ever sent.
dschneller
changed the title
timvaillancourt
suggested changes
Dec 6, 2018
There was a problem hiding this comment.
LGTM, please add new flag to https://github.com/Percona-Lab/mongodb_consistent_backup/blob/master/conf/mongodb-consistent-backup.example.conf
timvaillancourt
approved these changes
Dec 7, 2018
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We have seen cases where due to aborts in earlier steps
the upload stage would eagerly upload lots of files that
were supposed to go into an archive to S3.
This new optional parameter allows specifying a regular
expression for file names that actually should be uploaded,
regardless of what else might be in the source directory.
For example specify --upload.file_regex='.+\.tar$' to ensure only
tars are ever sent.