在CentOS上备份HBase数据可以通过以下几种方法实现:
停止HBase服务:
systemctl stop hbase-master
systemctl stop hbase-regionserver
创建备份目录:
mkdir -p /backup/hbase
执行备份命令:
hbase backup create 'my_backup' '/backup/hbase'
hbase backup restore 'my_backup'
监控备份进度: 可以通过查看HBase的日志文件来监控备份进度。
tail -f /var/log/hbase/hbase-<master-hostname>.log
启动HBase服务:
systemctl start hbase-master
systemctl start hbase-regionserver
创建快照:
hbase(main):0> snapshot 'myTable', 'mySnapshot'
列出快照:
hbase(main):0> list_snapshots
恢复快照:
hbase(main):0> restore_snapshot 'mySnapshot'
使用Apache Hadoop的DistCp工具:
hadoop distcp hdfs:///hbase /backup/hbase
hadoop distcp /backup/hbase hdfs:///hbase
使用Percona XtraBackup for HBase:
wget https://www.percona.com/downloads/percona-xtrabackup/Backup-2.4.10/binary/tarball/percona-xtrabackup-2.4.10-Linux-x86_64.tar.gz
tar zxvf percona-xtrabackup-2.4.10-Linux-x86_64.tar.gz
cd percona-xtrabackup-2.4.10-Linux-x86_64
./xtrabackup --backup --target-dir=/backup/hbase --hbase-home=/path/to/hbase
./xtrabackup --prepare --target-dir=/backup/hbase
./xtrabackup --copy-back --target-dir=/backup/hbase --datadir=/var/lib/hbase