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2018 Sep 04
2
Change password and add user on RO filesystem
Hi everyone
I'm trying to create system with RO root filesystem, so i'm using
/etc/sysconfig/readonly-root along wih /etc/rwtab and /etc/statetab.
Apart of numerous problems with services running on RO filesystem (which
i'm constantly resolving adding entries to /etc/statetab) one thing
popped up. I'm unable to add user or change his password. Error is
'cannot lock
2018 Sep 05
0
Change password and add user on RO filesystem
...y hand. For /etc/passwd and /etc/group (if necessary) this is easy,
since it's just a plain text file with human-readable text. For
/etc/shadow this is slightly more complicated, since you need to
generate the password hash. For that you can use mkpasswd:
https://www.aychedee.com/2012/03/14/etc_shadow-password-hash-formats/
Obviously doing this makes adding a user a nonatomic operation, so you
need to take care manipulating passwd and shadow in this way. (I don't
know if mkpasswd is available from a yum repo, but the included python
should be there.)
--keith
--
kkeller at wombat.san-fr...