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amdziak
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Joined: 29 May 2006
Posts: 52
Location: Poland/Mogielnica

PostPosted: Wed Dec 28, 2011 6:32 pm    Post subject: problem z ssh na rps... Reply with quote

Witam!

Otóż mam takowy problem:
zrobiłęm na firmowym serwerze emerge --depclean i po tejze operacji wysypalo mi sie ssh..
Chcąc ręcznie odpalić ssh przez Webmina wywala taki błąd:

Quote:
Nie udało się uruchomić serwera SSH :
/var/empty must be owned by root and not group or world-writable.


W logach jest coś takiego:

Quote:
Dec 28 18:41:02 stock sshd[20564]: error: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Dec 28 18:41:02 stock sshd[20564]: error: @ WARNING: UNPROTECTED PRIVATE KEY FILE! @
Dec 28 18:41:02 stock sshd[20564]: error: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Dec 28 18:41:02 stock sshd[20564]: error: Permissions 0777 for '/etc/ssh/ssh_host_dsa_key' are too open.
Dec 28 18:41:02 stock sshd[20564]: error: It is recommended that your private key files are NOT accessible by others.
Dec 28 18:41:02 stock sshd[20564]: error: This private key will be ignored.
Dec 28 18:41:02 stock sshd[20564]: error: bad permissions: ignore key: /etc/ssh/ssh_host_dsa_key
Dec 28 18:41:02 stock sshd[20564]: error: Could not load host key: /etc/ssh/ssh_host_dsa_key
Dec 28 18:41:02 stock sshd[20564]: Disabling protocol version 2. Could not load host key
Dec 28 18:41:02 stock sshd[20564]: sshd: no hostkeys available -- exiting.
Dec 28 18:50:03 stock su[21122]: Successful su for root by root
Dec 28 18:50:03 stock su[21122]: + ??? root:root
Dec 28 18:55:41 stock su[21408]: Successful su for root by root
Dec 28 18:55:41 stock su[21408]: + ??? root:root
Dec 28 18:56:16 stock sshd[4746]: Received signal 15; terminating.
Dec 28 18:57:31 stock su[21538]: Successful su for root by root
Dec 28 18:57:31 stock su[21538]: + ??? root:root
Dec 28 19:00:45 stock sshd[4506]: pam_unix(sshd:session): session closed for user root


sshd ma status started..
Co mi pozostaje?
Zadne srony firmowe nie chodzą ani nic, normalnie nie chce mi się myśleć o reinstalce...

Pozdrawiam i z góry dziękuję za pomoc,
amdziak
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Jacekalex
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Joined: 17 Sep 2009
Posts: 496

PostPosted: Thu Dec 29, 2011 1:31 am    Post subject: Reply with quote

Quote:
Dec 28 18:41:02 stock sshd[20564]: error: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Dec 28 18:41:02 stock sshd[20564]: error: @ WARNING: UNPROTECTED PRIVATE KEY FILE! @
Dec 28 18:41:02 stock sshd[20564]: error: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Dec 28 18:41:02 stock sshd[20564]: error: Permissions 0777 for '/etc/ssh/ssh_host_dsa_key' are too open.
Dec 28 18:41:02 stock sshd[20564]: error: It is recommended that your private key files are NOT accessible by others.
Dec 28 18:41:02 stock sshd[20564]: error: This private key will be ignored.
Dec 28 18:41:02 stock sshd[20564]: error: bad permissions: ignore key: /etc/ssh/ssh_host_dsa_key
Dec 28 18:41:02 stock sshd[20564]: error: Could not load host key: /etc/ssh/ssh_host_dsa_key
Dec 28 18:41:02 stock sshd[20564]: Disabling protocol version 2. Could not load host key
Dec 28 18:41:02 stock sshd[20564]: sshd: no hostkeys available -- exiting.


Poszukaj sobie lepiej lepszego okulisty, bo masz czarno na białym napisane, co jest grane.

SSH to jest Secure Shell - nie wystartuje, jeśli klucze nie mają bezpiecznych uprawnień.

I to raczej nie emerge rozpieprzyło uprawnienia, tylko rekursywne zmienianie uprawnień na 777.

RTFM
Code:
man chmod


Bo np u mnie, na takich uprawnieniach:
Code:
-rw-r--r--. 1 root root 1703904 11-18 09:42 blacklist
drwxr-x---. 2 root root    4096 2010-07-28  ca
-rw-r--r--. 1 root root  125811 11-18 09:29 moduli
-rw-r--r--. 1 root root    2079 2011-05-21  ssh_config
-rw-r--r--. 1 root root    5968 10-29 21:02 sshd_config
-rw-------. 1 root root     668 2010-07-28  ssh_host_dsa_key
-rw-r--r--. 1 root root     604 2010-07-28  ssh_host_dsa_key.pub
-rw-------. 1 root root     227 2011-06-23  ssh_host_ecdsa_key
-rw-r--r--. 1 root root     170 2011-06-23  ssh_host_ecdsa_key.pub
-rw-------. 1 root root     979 2010-07-28  ssh_host_key
-rw-------. 1 root root     644 2010-07-28  ssh_host_key.pub
-rw-------. 1 root root    1675 2010-07-28  ssh_host_rsa_key
-rw-------. 1 root root     396 2010-07-28  ssh_host_rsa_key.pub
ssh działa prawidłowo.

To by było na tyle
8)
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SlashBeast
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Joined: 23 May 2006
Posts: 2837

PostPosted: Thu Dec 29, 2011 10:08 am    Post subject: Reply with quote

Najwyrazniej *ktos* dal 'chmod 777 -R /'. Ja bym taki system zaoral i postawil od nowa.
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Jacekalex
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Joined: 17 Sep 2009
Posts: 496

PostPosted: Thu Dec 29, 2011 11:38 am    Post subject: Reply with quote

SlashBeast wrote:
Najwyrazniej *ktos* dal 'chmod 777 -R /'. Ja bym taki system zaoral i postawil od nowa.


A ja po postawieniu od nowa zrobiłbym backup samych uprawnień.
Sznurek: http://dug.net.pl/tekst/117/backup_uprawnien_w_folderach_systemowych_/

Pozdro
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