Shulou(Shulou.com)06/01 Report--

Scp remote backup

Host A

1. Log in with oracle: 192.17.28.5

two。 Produce public and private: id_rsa is private, id_rsa.pub is public.

Cd / home/oracle/.ssh-make sure that the .ssh file is corrupted, other users or groups do not have W write permission, otherwise it will be invalid.

[oracle@ytdbbackup .ssh] $ssh-keygen-t rsa-if prompted to reply by default, OK

3. Control the public license to the IP host that needs no password.

And write id_rsa.pub to the authorized_keys file of the: / home/oracle/.ssh directory of the IP host:

[oracle@ytdbbackup .ssh] $ssh-copy-id-I id_rsa.pub oracle@192.17.28.2

B host

1. Log in with oracle: 192.17.28.2

Cd / home/oracle/.ssh

two。 The right has been changed to only users and cannot be written. Note: password-free login is invalid if the authorized_keys file can be disabled.

Chmod 400 authorized_keys

3. Check the permission, only use the previous permission to have the right.

Ls-lth

A host:

1.oracle is registered with registration.

2.sh file creation:

Touch scp.sh

Vi scp.sh

Enter:

Scp-r oracle@192.17.28.2:/data/backup/backup_tfj_rman / data/backup/

Scp-r oracle@192.17.28.2:/data/backup/archive_jxdb / data/backup/

3. Schedule: crontab-e

After the rman copy, Monday, 2nd, 4th, 6th, the rman file.

58 03 * * 1, 2, 4, 6 sh / data/backup/backup_tfj_rman/scp.sh

Host B scheduling: crontab-e

-- 20:30rman schedule on Monday, Wednesday, Friday, evening

30 20 * * 1, 3, 5, 7 sh / data/backup/backup_tfj_rman/rman_job.sh

An as a client, to achieve password-free public key authentication, when connecting to server B

You need to generate a key pair on A, including a public key and a private key, and then copy the public key to all Slave.

When A connects to B through SSH, B generates a random number, encrypts it with A's public key, and sends it to A.

After receiving the encryption number, A decrypts it with the private key, and sends the decryption number back to Slave,Slave to confirm that the decryption number is correct, and then allows A to connect.

This is a public key authentication process, during which the user does not need to enter the password manually.

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