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SAMBA fails to start after years of working normally and no changes

Hi guys,

I have been happily running a small Ubuntu Dapper home server for some time now. I use it mostly as a fileserver and for downloading torrents. The Windows machines connect to it through SAMBA, but a couple of days ago it just stopped working for no apparent reason.

Here is my smb.conf:

Code:

[global]

    ; General server settings

    netbios name = server

    server string = Samba Server

    workgroup = GITS

    announce version = 5.0

    socket options = TCP_NODELAY IPTOS_LOWDELAY SO_KEEPALIVE SO_RCVBUF=8192 SO_SNDBUF=8192

    interfaces = lo, eth1

    bind interfaces only = true



    passdb backend = tdbsam

    security = user

    null passwords = true

    username map = /etc/samba/smbusers

    name resolve order = hosts wins bcast



    wins support = yes



    load printers = yes

    printing = cups

    printcap name = cups



    syslog = 1

    syslog only = yes



; NOTE: If you need access to the user home directories uncomment the

; lines below and adjust the settings to your hearts content.

;[homes]

    ;valid users = %S

    ;create mode = 0600

    ;directory mode = 0755

    ;browseable = no

    ;read only = no

    ;veto files = /*.{*}/.*/mail/bin/



; NOTE: Only needed if you run samba as a primary domain controller.

; Not needed as this config doesn't cover that matter.

;[netlogon]

    ;path = /var/lib/samba/netlogon

    ;admin users = Administrator

    ;valid users = %U

    ;read only = no



; NOTE: Again - only needed if you're running a primary domain controller.

;[Profiles]

    ;path = /var/lib/samba/profiles

    ;valid users = %U

    ;create mode = 0600

    ;directory mode = 0700

    ;writeable = yes

    ;browseable = no



; NOTE: Inside this place you may build a printer driver repository for

; Windows - I'll cover this topic in another HOWTO.

[print$]

    path = /var/lib/samba/printers

    browseable = yes

    guest ok = yes

    read only = yes

    write list = root

    create mask = 0664

    directory mask = 0775



[printers]

    comment = All Printers

    browseable = no

    path = /tmp

    printable = yes

    public = yes

    writable = no

    create mode = 0700

    printcap name = /etc/printcap

    print command = /usr/bin/lpr -P%p -r %s

    printing = cups



; Uncomment if you need to share your CD-/DVD-ROM Drive

;[DVD-ROM Drive]

    ;path = /media/cdrom

    ;browseable = yes

    ;read only = yes

    ;guest ok = yes



[public]

    path = /fat

    browseable = yes

    read only = no

    guest ok = no

    create mask = 0644

    directory mask = 0755

    force user = the_new_z

    force group = the_new_z

Here is the syslog when I try to start SAMBA:

Code:

May  4 10:40:22 server smbd[16435]: [2008/05/04 10:40:22, 0] param/loadparm.c:lp_do_parameter(3412)

May  4 10:40:22 server smbd[16435]:  Global parameter printcap name found in service section!

May  4 10:40:23 server smbd[16435]: [2008/05/04 10:40:23, 0] smbd/server.c:main(829)

May  4 10:40:23 server smbd[16435]:  ERROR: failed to setup guest info.

Maybe this is also important:

Code:

May  4 10:37:42 server nmbd[8954]: [2008/05/04 10:37:42, 0] nmbd/nmbd_browsesync.c:find_domain_master_name_query_fail(353)

May  4 10:37:42 server nmbd[8954]:  find_domain_master_name_query_fail:

May  4 10:37:42 server nmbd[8954]:  Unable to find the Domain Master Browser name GITS<1b> for the workgroup GITS.

May  4 10:37:42 server nmbd[8954]:  Unable to sync browse lists in this workgroup.

I am totally lost, so your help will be most appreciated. Let me know if you need any other output.

Stop samba and kill every process and try this:

nmbd -i -S -d 10
smbd -i -S -d 10

You need to run them as root, in two different consoles.
You will see a lot of output, maybe there you'll find an answer.

Thank you!

smbd -i -S -d 10 exits with:

Code:

User nobody in passdb, but getpwnam() fails!

attempting to free (and zero) a server_info structure

ERROR: failed to setup guest info.

talloc report on 'null_context' (total 959 bytes in 76 blocks)

        pdb_context internal allocation context contains    558 bytes in  7 blocks

        lp_talloc                      contains    401 bytes in  68 blocks

nmbd -i -S -d 10 goes for a long time, but I don't really get what it's saying. I see no errors, though. Here is a sample:

Code:

find_workgroup_on_subnet: workgroup search for GITS on subnet UNICAST_SUBNET: found.

find_workgroup_on_subnet: workgroup search for GITS on subnet UNICAST_SUBNET: found.

find_workgroup_on_subnet: workgroup search for GITS on subnet 192.168.0.1: found.

announce_myself_to_domain_master_browser: t (1209969661) - last(1209969307) < 900

dump_workgroups()

 dump workgroup on subnet    192.168.0.1: netmask=  255.255.255.0:

        GITS(1) current master browser = EXPERIENCE

                SERVER 40019a03 (Samba Server)

                EXPERIENCE 40051203 ()

dump_workgroups()

 dump workgroup on subnet  UNICAST_SUBNET: netmask=    192.168.0.1:

        GITS(1) current master browser = UNKNOWN

                SERVER 40019a03 (Samba Server)

Any further suggestions?

No prob! :)
It seems that samba is missing nobody's password.
Check if exist nobody in passwd:

Code:

grep nobody /etc/passwd

You have to see an output like mine:

Code:

nobody:x:65534:65534:nobody:/:/bin/false

Check also smb.conf for the guest account:

Code:

grep 'guest account' /etc/samba/smb.conf

It must match the user account found in passwd.

No, there seems to be no 'nobody' account. However, I created it with smbpasswd and I still get the same error.

Quote:

Originally Posted by the_new_z (Post 3144183)

No, there seems to be no 'nobody' account. However, I created it with smbpasswd and I still get the same error.

You have to create a "real" nobody account with useradd or something similar.

Code:

useradd -u 65535 -s /bin/false nobody

Excuse me for being so rude and not posting any answer for so long, but I have been away in the last couple of weeks. I will try your suggestion later today. What does the 65535 in useradd stand for?

Thank you. This totally worked, although I have no idea why... Thus far it was working without the nobody user!?