OCI - Create Instance and connect on linux machine

 Configuring connection to the vm from a Linux shell session

• Create Compute Instance 

• Select Image and shape 

• Networking : Select subnet 

• Save private Key and public key  and create instance 

• Login to any linux server that we wanted to connect and create directory  copy private and public key to linux directory so we can get connect to apptier instance 

[root@srv3 app]# mkdir -p /u01/apptierkey

[root@srv3 app]# cp ssh-key-2021-06-28.key Public_ssh-key-2021-06-28.key.pub /u01/apptierkey

[root@srv3 app]# cd /u01/apptierkey

[root@srv3 apptierkey]# ll

total 8

-rwxr-x--- 1 root root  399 Jun 28 13:07 Public_ssh-key-2021-06-28.key.pub

-rwxr-x--- 1 root root 1679 Jun 28 13:07 ssh-key-2021-06-28.key

• Provide chmod 600 permission to private key 

[root@srv3 apptierkey]# chmod 600 ssh-key-2021-06-28.key

[root@srv3 apptierkey]#

• Copy public IP address

[root@srv3 apptierkey]# ll

total 8

-rwxr-x--- 1 root root  399 Jun 28 13:07 Public_ssh-key-2021-06-28.key.pub

-rw------- 1 root root 1679 Jun 28 13:07 ssh-key-2021-06-28.key

[root@srv3 apptierkey]# ssh -i /u01/apptierkey/ssh-key-2021-06-28.key opc@140.238.242.52

The authenticity of host '140.238.242.52 (140.238.242.52)' can't be established.

RSA key fingerprint is f3:2a:55:5b:b4:c3:43:b4:80:82:cd:20:85:dd:d5:6e.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '140.238.242.52' (RSA) to the list of known hosts.

[opc@appvm ~]$ id

uid=1000(opc) gid=1000(opc) groups=1000(opc),4(adm),10(wheel),190(systemd-journal) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023

[opc@appvm ~]$ hostname

appvm