Major Plesk problem

[qiqme]

Hey,

I'm really stuck now

ERROR: Unable to connect to database: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) 
0: /usr/local/psa/admin/auto_prepend/auth.php3:81 psaerror(string "Unable to connect to database: 
Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)")

- I can't login with SSH as root (account is gone or corrupted)

- i have a bin/bash ssh account but no way i can change files or whatever. No rights or permission denied.

- Plesk is down

Have tried below but does not werk

- bash2-2.05b$ su root 
Password: 
su: /bin/bash bin:x:1:1:bin:/bin:/sbin/nologin: No such file or directory

Below some more stuff that did not work

-bash2-2.05b$ cd psa 
-bash2: cd: psa: Permission denied 
-bash2-2.05b$ mysql -uadmin -p`cat /etc/psa/.psa.shadow` 
cat: /etc/psa/.psa.shadow: Permission denied 
Enter password: 
ERROR 2002: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) 
-bash2-2.05b$ su admin 
su: user admin does not exist

Can't do anything

I think my passwd file is corrupted

root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin
lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync
shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
halt:x:7:0:halt:/sbin:/sbin/halt
mail:x:8:12:mail:/var/spool/mail:/sbin/nologin news:x:9:13:news:/etc/news: 
etc etc

And it should be

root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
adm:x:3:4:adm:/var/adm:/sbin/nologin
lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
sync:x:5:0:sync:/sbin:/bin/sync
shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
halt:x:7:0:halt:/sbin:/sbin/halt
mail:x:8:12:mail:/var/spool/mail:/sbin/nologin
news:x:9:13:news:/etc/news:
uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin
operator:x:11:0:operator:/root:/sbin/nologin
games:x:12:100:games:/usr/games:/sbin/nologin
gopher:x:13:30:gopher:/var/gopher:/sbin/nologin
etc etc

Please help me