Backup bitcoind wallet for servers example.

[cheako911]

Replace the two occurrences of YOUREMAIL.

Code:

#!/usr/bin/env perl

use common::sense;

use Fcntl qw(O_RDONLY O_NONBLOCK);
use POSIX qw(mkfifo);
use File::Temp qw(mktemp);
use File::Copy qw(copy);

my ( undef, $api ) = do '/home/btc/.bitcoin/bitcoin.PL';

my @fh;
my $unopened_file = mktemp("/home/btc/.backup${$}XXXXX");
$SIG{INT} = sub { die };
END { unlink $unopened_file }

mkfifo( $unopened_file, 0600 ) || die "mkfifo $unopened_file failed: $!";

sysopen( $fh[0], $unopened_file, O_RDONLY | O_NONBLOCK )
  || die "open $unopened_file failed: $!";

open( $fh[1],
'|gpg --batch --trust-model always -e -a -r "YOUREMAIL"|mail -s Bitcoin_Backup YOUREMAIL'
) || die "|gpg|mail failed: $!";

$api->call( 'dumpwallet', "$unopened_file" );

copy($fh[0],$fh[1]) || die "copy $unopened_file |gpg|mail failed: $!";

bitcoin.PL contains.

Code:

use Finance::Bitcoin;
my $wallet = Finance::Bitcoin::Wallet->new(
'http://bitcoinrpc:blahblahblah@127.0.0.1:8332/'
);
( $wallet, $wallet->api );

[1538090713]

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[ca333]

Replace the two occurrences of YOUREMAIL.

Code:

#!/usr/bin/env perl

use common::sense;

use Fcntl qw(O_RDONLY O_NONBLOCK);
use POSIX qw(mkfifo);
use File::Temp qw(mktemp);
use File::Copy qw(copy);

my ( undef, $api ) = do '/home/btc/.bitcoin/bitcoin.PL';

my @fh;
my $unopened_file = mktemp("/home/btc/.backup${$}XXXXX");
$SIG{INT} = sub { die };
END { unlink $unopened_file }

mkfifo( $unopened_file, 0600 ) || die "mkfifo $unopened_file failed: $!";

sysopen( $fh[0], $unopened_file, O_RDONLY | O_NONBLOCK )
  || die "open $unopened_file failed: $!";

open( $fh[1],
'|gpg --batch --trust-model always -e -a -r "YOUREMAIL"|mail -s Bitcoin_Backup YOUREMAIL'
) || die "|gpg|mail failed: $!";

$api->call( 'dumpwallet', "$unopened_file" );

copy($fh[0],$fh[1]) || die "copy $unopened_file |gpg|mail failed: $!";

bitcoin.PL contains.

Code:

use Finance::Bitcoin;
my $wallet = Finance::Bitcoin::Wallet->new(
'http://bitcoinrpc:blahblahblah@127.0.0.1:8332/'
);
( $wallet, $wallet->api );

thank you for sharing. i extended your script with parameters and config-file.
will upload/share when finished. will try add ssl config for wallet-connection too.

greetings!

[cheako911]

Replace the two occurrences of YOUREMAIL.

Code:

#!/usr/bin/env perl

use common::sense;

use Fcntl qw(O_RDONLY O_NONBLOCK);
use POSIX qw(mkfifo);
use File::Temp qw(mktemp);
use File::Copy qw(copy);

my ( undef, $api ) = do '/home/btc/.bitcoin/bitcoin.PL';

my @fh;
my $unopened_file = mktemp("/home/btc/.backup${$}XXXXX");
$SIG{INT} = sub { die };
END { unlink $unopened_file }

mkfifo( $unopened_file, 0600 ) || die "mkfifo $unopened_file failed: $!";

sysopen( $fh[0], $unopened_file, O_RDONLY | O_NONBLOCK )
  || die "open $unopened_file failed: $!";

open( $fh[1],
'|gpg --batch --trust-model always -e -a -r "YOUREMAIL"|mail -s Bitcoin_Backup YOUREMAIL'
) || die "|gpg|mail failed: $!";

$api->call( 'dumpwallet', "$unopened_file" );

copy($fh[0],$fh[1]) || die "copy $unopened_file |gpg|mail failed: $!";

bitcoin.PL contains.

Code:

use Finance::Bitcoin;
my $wallet = Finance::Bitcoin::Wallet->new(
'http://bitcoinrpc:blahblahblah@127.0.0.1:8332/'
);
( $wallet, $wallet->api );

thank you for sharing. i extended your script with parameters and config-file.
will upload/share when finished. will try add ssl config for wallet-connection too.

greetings!

That's correct, this example is vastly site specific.  It doesn't handle password protected wallets it would also be nice if the command to pipe to(mail) was configurable.  ssh/curl/cat are good examples.

[cheako911]

After looking at a few of the backups, I've decided that bitcoind needs a keypoolrefill prior to making the backup.

The default value is 100, but I feel that the code could auto-scale up for large sites if it recorded the number of records that were dumped each time.

[cheako]

Does anyone know why bitcoind->dumpwallet now doesn't write to a fifo as it used too?