Preserves user password during migration

[Ngoh Chean Siung]

Hi,

I hv created an user account with login name as ncs in server A. Actually I want to migrate this user id from server B to server A. In order to preserve the user password at server B, I hv copied the ncs file from server B /tcb/files/auth/n to server A. I don't copy the entry from /etc/passwd from server B to server A. I able to login but the user id(UID) is diff between /etc/passwd & /tcb/files/auth/n

Below is the diff for /tcb/files/auth/n/ncs between 2 servers
server A:
ncs:u_name=ncs:u_id#129:\
:u_pwd=P6RuJxtEmE8Sg1DIt0VDIoi.jc2OgNv2Zf6:\
:u_auditid#386:\
:u_auditflag#1:\
:u_succhg#1139966489:u_unsucchg#1128497238:u_pswduser=ncs:u_suclog#1142
501475:\
:u_suctty=pts/to:u_unsuclog#1142407526:u_unsuctty=pts/t1:u_lock@:\
:chkent:

server B:
ncs:u_name=ncs:u_id#138:\
:u_pwd=AGTGLLXIP8mWA:\
:u_auditid#277:\
:u_auditflag#1:\
:u_succhg#1142501503:u_unsucchg#1141980009:u_suclog#1142501536:u_suctty
=pts/tO:\
:u_unsuclog#1142501488:u_unsuctty=pts/tO:u_lock@:chkent:

Questions:
1) Any impact that I just copy /tcb/files/auth/n/ncs only without /etc/passwd?

2) Due to I already create user account called ncs in server A, any impact if I copy ncs entry from server B /etc/passwd and overwrite it at server A?

3) I hv created 80 users in server A. If I need to copy 80 users entries from /etc/passwd and /tcb/files/auth, what is the easiest and fastest way?

regards.

[Muthukumar_5]

1) Any impact that I just copy /tcb/files/auth/n/ncs only without /etc/passwd?

Problem will come when you are converting your machine to non-trusted mode. Copy /etc/passwd and /tcb/ directory as well.

2) Due to I already create user account called ncs in server A, any impact if I copy ncs entry from server B /etc/passwd and overwrite it at server A?

Password and user setting will be changed as like Server B. Hope you can select fields from server B's /etc/passwd and update into Server A.

3) I hv created 80 users in server A. If I need to copy 80 users entries from /etc/passwd and /tcb/files/auth, what is the easiest and fastest way?

Just transfer the file from Server B to Server A with some other extensions. Take the backup of already existing (It is needed). Try to update it with cp -p mode.

--
Muthu

[Ngoh Chean Siung]

Hi,

1) Normally for users account migration, do we need to manually create the users account in destination server first and then copy the /etc/passwd and /tcb/files/auth?

2) In server A, I already hv a list of existing users account at /etc/passwd. What I can think off is append 80 users entries from server B to server A bcos I cannot overwrite existing server A /etc/passwd. Is it what I suppose to do?

3) For /tcb/files/auth, normally what is the method that used to overwrite? What I can think off is backup /tcb/files/auth using tar at server B and restore it into server B. But I afraid the restoration will affect others users such as users passwd file corrupted. Any good suggestion?

regards.

[Muthukumar_5]

1) Normally for users account migration, do we need to manually create the users account in destination server first and then copy the /etc/passwd and /tcb/files/auth?

If you copy /etc/passwd file entries to Server A then users are added as well.

2) In server A, I already hv a list of existing users account at /etc/passwd. What I can think off is append 80 users entries from server B to server A bcos I cannot overwrite existing server A /etc/passwd. Is it what I suppose to do?

User accounts has to be unique. Don't add duplicate entries. Try to run pwck after migration to check for errors. See man pwck.

3) For /tcb/files/auth, normally what is the method that used to overwrite? What I can think off is backup /tcb/files/auth using tar at server B and restore it into server B. But I afraid the restoration will affect others users such as users passwd file corrupted. Any good suggestion?

May be you can copy and paste /tcb/files/auth directory files except root user. That is useful. More then try to backup existing /tcb/ directory before making any trial.

--
Muthu

[Ngoh Chean Siung]

Hi,

Do you mean that after copy the /etc/passwd, users home directory will be automatically created? Need to restart services or reboot server for the automatically users home directory creation?

regards.

[Ngoh Chean Siung]

Hi,

How about the users group is diff? Let said at server B, the user group for these 80 users is users. But at server A, I want the user group for these 80 users as test.

Pls advise.

regards.

[Arunvijai_4]

Hello,

How about the users group is diff? Let said at server B, the user group for these 80 users is users. But at server A, I want the user group for these 80 users as test.

You need to migrate the groups as well. That is, you may need to add users to other group.

-Arun

[Ngoh Chean Siung]

Hi,

I already manually created 80 users with grp id 123 in server A. Assumed that the grp id for these users in server B is 150.

Q1) After I copy these 80 users entries at /etc/passwd from server B to server A, can I just replace these users grp id with 123?

Q2) Is the content under /tcb/files/auth include the grp id info? As I know, it seems doesn't include.

regards.