Hi Doug, 
first of all, many thanks for the fast reply.

the /etc/hosts on my "host" machine is properly confiured:
127.0.0.1 localhost
127.0.1.1       hce03

# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
# BEGIN ANSIBLE GENERATED HOSTS
xx.yy.zz.136 hce03
xx.yy.zz.138 hce05
# END ANSIBLE GENERATED HOSTS


while the bootstrap_mariadb is attempting to start up if I check within the container I see:

()[mysql@01ec215b2dc8 /]$ cat /etc/hosts
127.0.0.1       localhost
::1     localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.17.0.2      01ec215b2dc8


/G



On Tue, 12 Feb 2019 at 18:54, Doug Szumski <doug@stackhpc.com> wrote:

On 12/02/2019 17:31, Giuseppe Sannino wrote:
> Hi all,
> need your help.
> I'm trying to deploy Openstack "Queens" via kolla on a multinode
> system (1 controller/kolla host + 1 compute).
>
> I tried with both binary and source packages and I'm using "ubuntu" as
> base_distro.
>
> The first attempt of deployment systematically fails here:
>
> TASK [mariadb : Running MariaDB bootstrap container]
> ********************************************************************************************************************************************************************************************************
> fatal: [xx.yy.zz.136]: FAILED! => {"changed": true, "msg": "Container
> exited with non-zero return code 1"}
>
> Looking at the bootstrap_mariadb container logs I can see:
> ----------
> Neither host 'xxyyzz' nor 'localhost' could be looked up with
> '/usr/sbin/resolveip'
> Please configure the 'hostname' command to return a correct
> hostname.
> ----------
>
> Any idea ?

Have you checked that /etc/hosts is configured correctly?

>
> Thanks a lot
> /Giuseppe
>