AMANDAを使用してテープライブラリにバックアップする数百のシステムがあります。毎日、STRANGEバックアップ結果の長いリストが記載されたメールが届きます。これらのほとんどすべては、ログファイルが書き込まれていたか、ファイルベースのキャッシュがWebサーバーで更新されていたためです。例(さまざまなSTRANGEメッセージを表示する5台のマシン):
STRANGE DUMP DETAILS:
/-- av1 / lev 2 STRANGE
sendbackup: start [avion:/ level 2]
sendbackup: info BACKUP=/bin/tar
sendbackup: info RECOVER_CMD=/bin/tar -xpGf - ...
sendbackup: info end
? /bin/tar: ./boot: directory is on a different filesystem; not dumped
? /bin/tar: ./dev: directory is on a different filesystem; not dumped
? /bin/tar: ./fs: directory is on a different filesystem; not dumped
? /bin/tar: ./proc: directory is on a different filesystem; not dumped
? /bin/tar: ./run: directory is on a different filesystem; not dumped
? /bin/tar: ./sys: directory is on a different filesystem; not dumped
? /bin/tar: ./wwwusers: directory is on a different filesystem; not dumped
| /bin/tar: ./tmp/.X11-unix/X0: socket ignored
| /bin/tar: ./tmp/gpg-v9zbWU/S.gpg-agent: socket ignored
| Total bytes written: 795084800 (759MiB, 740KiB/s)
sendbackup: size 776450
sendbackup: end
\--------
/-- gitlab / lev 3 STRANGE
sendbackup: start [gitlab:/ level 3]
sendbackup: info BACKUP=/bin/tar
sendbackup: info RECOVER_CMD=/bin/tar -xpGf - ...
sendbackup: info end
| /bin/tar: ./tmp/gitaly-Ruby215330643/socket.0: socket ignored
| /bin/tar: ./tmp/gitaly-Ruby215330643/socket.1: socket ignored
| /bin/tar: ./var/lib/gssproxy/default.sock: socket ignored
? /bin/tar: ./var/log/gitlab/gitlab-workhorse/current: file changed as we read it
? /bin/tar: ./var/log/gitlab/nginx/gitlab_access.log: file changed as we read it
| /bin/tar: ./var/opt/gitlab/gitaly/gitaly.socket: socket ignored
| /bin/tar: ./var/opt/gitlab/gitlab-Rails/sockets/gitlab.socket: socket ignored
| /bin/tar: ./var/opt/gitlab/gitlab-workhorse/socket: socket ignored
| /bin/tar: ./var/opt/gitlab/postgresql/.s.PGSQL.5432: socket ignored
| /bin/tar: ./var/opt/gitlab/redis/redis.socket: socket ignored
| /bin/tar: ./var/spool/postfix/private/anvil: socket ignored
| /bin/tar: ./var/spool/postfix/private/bounce: socket ignored
| /bin/tar: ./var/spool/postfix/private/defer: socket ignored
| /bin/tar: ./var/spool/postfix/private/discard: socket ignored
| /bin/tar: ./var/spool/postfix/private/error: socket ignored
| /bin/tar: ./var/spool/postfix/private/lmtp: socket ignored
Look in the '/var/log/amanda/log.error/gitlab._.3.20180606231049.errout' file for full error messages
\--------
/-- haproxy00-127 / lev 3 STRANGE
sendbackup: start [haproxy00-127:/ level 3]
sendbackup: info BACKUP=/bin/tar
sendbackup: info RECOVER_CMD=/bin/tar -xpGf - ...
sendbackup: info end
? /bin/tar: ./var/log/messages: file changed as we read it
Look in the '/var/log/amanda/log.error/haproxy00-127._.3.20180607003248.errout' file for full error messages
\--------
/-- imap00 /srv/dovecot lev 0 STRANGE
sendbackup: start [imap00:/srv/dovecot level 0]
sendbackup: info BACKUP=/bin/tar
sendbackup: info RECOVER_CMD=/bin/tar -xpGf - ...
sendbackup: info end
? /bin/tar: ./a1/Maildir/new/1528332018.M.imap00.example.com,S=6309,W=6430: File removed before we read it
? /bin/tar: ./a1/Maildir/new/1528335571.M.imap00.example.com,S=8299,W=8451: File removed before we read it
? /bin/tar: ./a2/Maildir/cur/1528306776.M.imap00.example.com,S=13517,W=13770\:2,Scd: File removed before we read it
? /bin/tar: ./a2/Maildir/cur/1528332257.M.imap00.example.com,S=22257,W=22562\:2,STcd: File removed before we read it
? /bin/tar: ./a3/Maildir/cur/1528287062.M.imap00.example.com,S=10343,W=10558\:2,: File removed before we read it
? /bin/tar: ./a3/Maildir/cur/1528297383.M.imap00.example.com,S=4179,W=4265\:2,: File removed before we read it
? /bin/tar: ./a3/Maildir/cur/1528312816.M.imap00.example.com,S=29364,W=29796\:2,: File removed before we read it
? /bin/tar: ./a3/Maildir/new/1528327304.M.imap00.example.com,S=52059,W=53029: File removed before we read it
? /bin/tar: ./a4/Maildir/.folder/dovecot.index.log.2: File removed before we read it
? /bin/tar: ./a4/Maildir/.Personal/dovecot.index.log.2: File removed before we read it
? /bin/tar: ./a4/Maildir/.Trash/cur/1527783480.M.imap00.example.com,S=31976,W=32433\:2,Sab: File removed before we read it
? /bin/tar: ./a4/Maildir/cur/1528336066.M.imap00.example.com,S=122100,W=124740\:2,ab: File removed before we read it
? /bin/tar: ./a4/Maildir/cur/1528337059.M.imap00.example.com,S=28553,W=28964\:2,ab: File removed before we read it
Look in the '/var/log/amanda/log.error/imap00._srv_dovecot.0.20180606220538.errout' file for full error messages
\--------
/-- webserver1 / lev 2 STRANGE
sendbackup: start [webserver1:/ level 2]
sendbackup: info BACKUP=/bin/tar
sendbackup: info RECOVER_CMD=/bin/tar -xpGf - ...
sendbackup: info end
? /bin/tar: ./var/log/httpd/kemp_access_log: file changed as we read it
? /bin/tar: ./var/log/httpd/wiki.example.com_access_ssl.log: file changed as we read it
? /bin/tar: ./var/log/httpd/www.example.com_access.log: file changed as we read it
? /bin/tar: ./var/log/httpd/www.example.com_ssl_access_ssl.log: file changed as we read it
Look in the '/var/log/amanda/log.error/webserver1._.2.20180607004437.errout' file for full error messages
\--------
(brought to you by Amanda version 3.3.3)
現在の構成の関連部分:
define dumptype nocomp-root-tar {
program "GNUTAR"
comment "Root partitions with gtar"
compress none
estimate server
priority low
exclude list "/etc/amanda/amanda.exclude.list"
auth "bsd"
}
define dumptype nocomp-user-tar {
program "GNUTAR"
comment "Non-root partitions with gtar"
compress none
estimate server
priority medium
exclude list "/etc/amanda/amanda.exclude.list"
auth "bsd"
}
これらのファイルが変更または消失する可能性があるという理由だけで、これらのファイルをバックアップから除外したくありません。また、バックアップの実行中にIMAPサーバーを無効にすることはできません。これらのメッセージをすべて削除できるバックアップ方法として amgtar
を使用するようにシステムを変更できるようです。
define application-tool app_amgtar {
plugin "amgtar"
property "NORMAL" ": socket ignored$"
property append "NORMAL" "file changed as we read it$"
property append "NORMAL" ": directory is on a different filesystem; not dumped$"
property append "NORMAL" ": File removed before we read it$"
}
define dumptype nocomp-root-amgtar {
program "APPLICATION"
application "app_amgtar"
comment "Root partitions with amgtar"
compress none
estimate server
priority low
exclude list "/etc/amanda/amanda.exclude.list"
auth "bsd"
}
...
amgtar
にマイナス面はありますか?
この変更を行うと、古いバックアップを復元するのがより困難になりますか?
ドキュメントには、GNUTAR
のみがexclude list
をサポートすると記載されているようです。 amgtar
は下でGNUTAR
を使用するため、それもサポートしますか?
変更を加えましたが、問題はありませんでした。残念ながら、それについてのこれ以上の情報はありません...