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Re: allowing local accounts when LDAP is unavailable?

by wrogers :: Rate this Message:

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You don't have to do anything with pam to get failover to /etc/passwd
if you have an LDAP outage, just use proper ordering of
/etc/nsswitch.conf

Wes

On Fri, May 1, 2009 at 16:57, Justin Lintz <jlintz@...> wrote:

> Some more information,
>
> It appears it's never timing out when trying to connect to the ldap
> server and falling back to local users.  It just keeps trying even
> though I have set a 15 second timeout on the bind connection to ldap
>
>
> - Justin Lintz
>
>
>
> On Fri, May 1, 2009 at 4:55 PM, Justin Lintz <jlintz@...> wrote:
>> I too am running into this same issue on centos 5.3.  Here is the
>> revelant information from my pam setup
>>
>> auth        required      pam_env.so
>> auth        required      pam_listfile.so onerr=fail item=group
>> sense=allow file=/etc/ldapgroups
>> auth        sufficient    pam_unix.so nullok try_first_pass
>> auth        requisite     pam_succeed_if.so uid >= 500 quiet
>> auth        sufficient    pam_ldap.so use_first_pass
>> auth        required      pam_deny.so
>>
>> account     required      pam_unix.so broken_shadow
>> account     sufficient    pam_succeed_if.so uid < 500 quiet
>> account     [default=bad success=ok user_unknown=ignore] pam_ldap.so
>> account     required      pam_permit.so
>>
>> password    requisite     pam_cracklib.so try_first_pass retry=3
>> password    sufficient    pam_unix.so md5 shadow nullok try_first_pass
>> use_authtok
>> password    sufficient    pam_ldap.so use_authtok
>> password    required      pam_deny.so
>>
>> session     optional      pam_keyinit.so revoke
>> session     required      pam_limits.so
>> session    required     pam_mkhomedir.so skel=/etc/skel/ umask=0077
>> session     [success=1 default=ignore] pam_succeed_if.so service in
>> crond quiet use_uid
>> session     required      pam_unix.so
>> session     optional      pam_ldap.so
>>
>> - Justin Lintz
>>
>>
>>
>> On Thu, Apr 30, 2009 at 7:21 PM, Stricklin, Raymond J
>> <raymond.j.stricklin@...> wrote:
>>>
>>>
>>>> -----Original Message-----
>>>> From: Howard Chu [mailto:hyc@...]
>>>> > what can I do to allow locally defined users to log in while LDAP is
>>>
>>>> > unavailable?
>>>>
>>>> Sounds like you just need to tweak the success config in
>>>> pam.conf - I use "sufficient" and it just falls back to
>>>> pam_unix if pam_ldap fails.
>>>
>>> Here are the relevant parts of my pam config:
>>>
>>> account required pam_ldap.so  ignore_unknown_user
>>> ignore_authinfo_unavail
>>> account required pam_unix2.so
>>>
>>> auth required   pam_env.so
>>> auth sufficient pam_unix2.so
>>> auth sufficient pam_ldap.so  use_first_pass ignore_authinfo_unavail
>>> auth required   pam_deny.so
>>>
>>> password required pam_pwcheck.so nullok
>>> password required pam_ldap.so    try_first_pass ignore_unknown_user
>>> ignore_authinfo_unavail
>>> password required pam_unix2.so   nullok use_authtok
>>>
>>> session required pam_limits.so
>>> session optional pam_ldap.so   ignore_authinfo_unavail
>>> session required pam_unix2.so
>>>
>>>
>>> The 'ignore_authinfo_unavail' options were all added today. It works the
>>> same in this situation with or without.
>>>
>>> I wonder if it's failing in 'account'. It seems like I had to have it
>>> the way I have it, to make something important work correctly. I may
>>> have to dig back through my notes. I think it may have been related to
>>> LDAP password policy enforcement.
>>>
>>> ok
>>> r.
>>>
>>
>

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