Cloud Computing Learning Route course syllabus Courseware: a practical case of tar Project

Cloud Computing Learning Route course syllabus Courseware: practical case of tar Project:

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[root@localhost ~] # yum-y install mariadb-server

[root@localhost ~] # systemctl start mariadb

[root@localhost ~] # mkdir / backup

Case 1:mysql physical backup and recovery

[root@localhost ~] # tar-cJf / backup/mysql.tar.xz / var/lib/mysql

[root@localhost ~] # rm-rf / var/lib/mysql/*

[root@localhost] # tar-xf / backup/mysql.tar.xz-C /

Case 2:mysql physical backup and recovery

[root@localhost ~] # cd / var/lib/mysql

[root@localhost mysql] # tar-cJf / backup/mysql.tar.xz *

[root@localhost mysql] # tar-xf / backup/mysql.tar.xz-C / var/lib/mysql

Case 3:host A / etc (massive small files)-> host A / tmp

[root@localhost] # tar-czf etc.gz / etc-C / tmp

Case 4:host A / etc (massive small files)-> host B / tmp

General methods:

[root@localhost] # scp-r / etc 172.16.20.21:/tmp

Suggested method:

= = host B listening port = =

[root@w_hat] # firewall-cmd-- permanent-- add-port=8888/tcp

[root@w_hat] # firewall-cmd-- reload

Or

[root@hostb ~] # systemctl stop firewalld.service

[root@hostb ~] # nc-l 8888 | tar-xzf-C / tmp

= = host A = =

[root@localhost ~] # tar-czf-/ etc | nc 172.16.20.21 8888

Tar: Removing leading `/ 'from member names

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