Re: [Openstack] Unable to start devstack@n-cpu.service

[sagar]

Thanks a lot Brend, able to run it now :)


On 03/22/2018 04:31 PM, Bernd Bausch wrote:

The rngd service has nothing to do with your problem. It’s described as “Hardware RNG Entropy Gatherer Daemon” and probably fails because your DevStack runs in a VM, not on hardware.

From what I see, n-cpu fails because Paramiko, the Python library that implements the SSH protocol, succeeds in importing a module named gssapi, but then fails accessing an attribute GSSException in gssapi. This looks like what I see here: https://github.com/paramiko/paramiko/issues/584

It seems to me that you have the wrong Python module gssapi installed on that server. If you don’t use Kerberos for authentication, you shouldn’t have gssapi at all. When gssapi doesn’t exist, Paramiko doesn’t even try to access gssapi.GSSException.

Check if you have gssapi, and if so, remove it. Just look for a directory named **gssapi**, and do a *pip uninstall *on the name of that directory.

Bernd.

*From:*sagar.ko...@nic.in [mailto:sagar.ko...@nic.in]
*Sent:* Thursday, March 22, 2018 6:42 PM
*To:* Bernd Bausch <berndbau...@gmail.com>; openstack@lists.openstack.org
*Subject:* Re: [Openstack] Unable to start devstack@n-cpu.service

thanks for the response, as suggested I have tried stable/queens but still getting the same error.

Few observations

 1. services rngd.service  and devstack@n-cpu.service
    <mailto:devstack@n-cpu.service> are failed to start.
 2. processor family - AMD Phenom(tm) II X4 955 Processor
 3. openvswitch.service is in exited state


please find attached

 1. output of*journalctl-n-cpu*
 2. output of systemctl list-units
 3. /etc/nova/nova.conf
 4. /proc/cpuinfo

On 03/22/2018 05:10 AM, Bernd Bausch wrote:

    In my experience, a DevStack cloned from the master branch (which
    is the default) may occasionally run into inconsistencies such as
    incompatible library versions. Try a stable branch e.g. git clone
    ... –b stable/queens. Or just clone the master again later.

    Your local.conf may also be at the origin of this error.

    The full stack trace with a little bit of context may also be
    helpful (journalctl –u devstack@n-cpu). It might contain other
    errors or warnings that provide a clue.

    Also look for Nova-related errors or warnings in the stack.sh log
    file.

    Bernd.

    *From:*Sagar Kohli [mailto:sagar.ko...@nic.in]
    *Sent:* Wednesday, March 21, 2018 6:08 PM
    *To:* openstack@lists.openstack.org
    <mailto:openstack@lists.openstack.org>
    *Subject:* [Openstack] Unable to start devstack@n-cpu.service
    <mailto:devstack@n-cpu.service>

    I am trying to install devstack on my fresh centos7 machine. All
    went well.
    But i am not able to get service devstack@n-cpu.service
    <mailto:devstack@n-cpu.service> up. following is the output of
    systemctl status devstack@n-cpu.service
    <mailto:devstack@n-cpu.service>

        sudo systemctl status devstack@n-cpu.service
        <mailto:devstack@n-cpu.service>
        ● devstack@n-cpu.service <mailto:devstack@n-cpu.service> -
        Devstack devstack@n-cpu.service <mailto:devstack@n-cpu.service>
           Loaded: loaded (/etc/systemd/system/devstack@n-cpu.service
        <mailto:/etc/systemd/system/devstack@n-cpu.service>; enabled;
        vendor preset: disabled)
           Active: failed (Result: exit-code) since Wed 2018-03-21
        15:22:55 EDT; 10h left
          Process: 4252 ExecStart=/usr/bin/nova-compute --config-file
        /etc/nova/nova-cpu.conf (code=exited, status=1/FAILURE)
         Main PID: 4252 (code=exited, status=1/FAILURE)

        Mar 21 15:22:55 localhost.localdomain nova-compute[4252]:
        ERROR nova     from paramiko.auth_handler import AuthHandler
        Mar 21 15:22:55 localhost.localdomain nova-compute[4252]:
        ERROR nova   File
        "/usr/lib/python2.7/site-packages/paramiko/auth_handler.py",
        lin...module>
        Mar 21 15:22:55 localhost.localdomain nova-compute[4252]:
        ERROR nova     from paramiko.ssh_gss import GSSAuth,
        GSS_EXCEPTIONS
        Mar 21 15:22:55 localhost.localdomain nova-compute[4252]:
        ERROR nova   File
        "/usr/lib/python2.7/site-packages/paramiko/ssh_gss.py", line
        54,...module>
        Mar 21 15:22:55 localhost.localdomain nova-compute[4252]:
        ERROR nova     GSS_EXCEPTIONS = (gssapi.GSSException,)
        Mar 21 15:22:55 localhost.localdomain nova-compute[4252]:
        ERROR nova AttributeError: 'module' object has no attribute
        'GSSException'
        Mar 21 15:22:55 localhost.localdomain nova-compute[4252]:
        ERROR nova
        Mar 21 15:22:55 localhost.localdomain systemd[1]:
        devstack@n-cpu.service <mailto:devstack@n-cpu.service>: main
        process exited, code=exited, status=1/FAILURE
        Mar 21 15:22:55 localhost.localdomain systemd[1]: Unit
        devstack@n-cpu.service <mailto:devstack@n-cpu.service> entered
        failed state.
        Mar 21 15:22:55 localhost.localdomain systemd[1]:
        devstack@n-cpu.service <mailto:devstack@n-cpu.service> failed.
        Hint: Some lines were ellipsized, use -l to show in full.

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