VSFTP in CentOS 64-bit : PAM [error: /lib/security/pam_userdb.so: wrong ELF class: ELFCLASS32]

After setting up the vsftp to use PAM as auth.

Somehow having the following error appeared in

tail -f /var/log/secure
Sep 21 09:47:45 g-server vsftpd: PAM [error: /lib/security/pam_userdb.so: wrong ELF class: ELFCLASS32]

and resulting user can’t login to ftp service at all.

Apparently is because the system is 64-bit..
so the library is sitting somewhere else… correction is as below

session optional pam_keyinit.so force revoke
# 32-bit
#auth required /lib/security/pam_userdb.so db=/etc/vsftpd/vsftpd_users
#account required /lib/security/pam_userdb.so db=/etc/vsftpd/vsftpd_users
# 64-bit
auth required /lib64/security/pam_userdb.so db=/etc/vsftpd/vsftpd_users
account required /lib64/security/pam_userdb.so db=/etc/vsftpd/vsftpd_users

http://www.cyberciti.biz/tips/rhel-fedora-centos-vsftpd-installation.html
it much easier to setup because it come bundled with redhat / centos .

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2 Responses

  1. namran says:

    4) Module parameters.
    ———————
    The following module parameters can be passed:

    mode=

    Possible values are 0 (round robin policy, default) and 1 (active backup
    policy), and 2 (XOR). See question 9 and the HA section for additional info.

    miimon=

    Use integer value for the frequency (in ms) of MII link monitoring. Zero value
    is default and means the link monitoring will be disabled. A good value is 100
    if you wish to use link monitoring. See HA section for additional info.

    downdelay=

    Use integer value for delaying disabling a link by this number (in ms) after
    the link failure has been detected. Must be a multiple of miimon. Default
    value is zero. See HA section for additional info.

    updelay=

    Use integer value for delaying enabling a link by this number (in ms) after
    the “link up” status has been detected. Must be a multiple of miimon. Default
    value is zero. See HA section for additional info.

    arp_interval=

    Use integer value for the frequency (in ms) of arp monitoring. Zero value
    is default and means the arp monitoring will be disabled. See HA section
    for additional info. This field is value in active_backup mode only.

    arp_ip_target=

    An ip address to use when arp_interval is > 0. This is the target of the
    arp request sent to determine the health of the link to the target.
    Specify this value in ddd.ddd.ddd.ddd format.

    If you need to configure several bonding devices, the driver must be loaded
    several times. I.e. for two bonding devices, your /etc/conf.modules must look
    like this:

    alias bond0 bonding
    alias bond1 bonding

    options bond0 miimon=100
    options bond1 -o bonding1 miimon=100

    Reply
  2. namran says:

    4) Module parameters.
    ———————
    The following module parameters can be passed:

    mode=

    Possible values are 0 (round robin policy, default) and 1 (active backup
    policy), and 2 (XOR). See question 9 and the HA section for additional info.

    miimon=

    Use integer value for the frequency (in ms) of MII link monitoring. Zero value
    is default and means the link monitoring will be disabled. A good value is 100
    if you wish to use link monitoring. See HA section for additional info.

    downdelay=

    Use integer value for delaying disabling a link by this number (in ms) after
    the link failure has been detected. Must be a multiple of miimon. Default
    value is zero. See HA section for additional info.

    updelay=

    Use integer value for delaying enabling a link by this number (in ms) after
    the “link up” status has been detected. Must be a multiple of miimon. Default
    value is zero. See HA section for additional info.

    arp_interval=

    Use integer value for the frequency (in ms) of arp monitoring. Zero value
    is default and means the arp monitoring will be disabled. See HA section
    for additional info. This field is value in active_backup mode only.

    arp_ip_target=

    An ip address to use when arp_interval is > 0. This is the target of the
    arp request sent to determine the health of the link to the target.
    Specify this value in ddd.ddd.ddd.ddd format.

    If you need to configure several bonding devices, the driver must be loaded
    several times. I.e. for two bonding devices, your /etc/conf.modules must look
    like this:

    alias bond0 bonding
    alias bond1 bonding

    options bond0 miimon=100
    options bond1 -o bonding1 miimon=100

    Reply

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