[ 4.0.3.0-113] Server-Manager: In preconfig.py, Connection to server is failing

preconfig.py fails with the following error when the provisioning is issued.

The issue is seen only when it's not a fresh install. Fresh provisioning works as expected, re triggering the provisioning script ( provision_containers.sh or preconfig.py) fails.

Please provision the system, and once the setup is up and running then issue the following cmd to reproduce the issue..

/opt/contrail/server_manager/client/preconfig.py --server-json /var/log/contrail/sm_provisioning/2017_11_08__13_34_06/server.json --server-manager-ip 10.204.217.117 --server-manager-repo-port 80

> [2017-11-08 19:50:33,952: exec_cmd] [error_on_fail]: Cmd (DEBIAN_FRONTEND=noninteractive apt-get -y --force-yes -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confnew" install ifenslave-2.6) Failed
Traceback (most recent call last):
  File "/opt/contrail/server_manager/client/preconfig.py", line 646, in <module>
    Utils.preconfig(args)
  File "/opt/contrail/server_manager/client/preconfig.py", line 112, in preconfig
    raise RuntimeError('Connection to (%s) Failed' % hostobj.ip)
RuntimeError: Connection to (10.204.217.31) Failed

Workaround for this is:-

>>> mkdir /etc/apt/restore ; mv /etc/apt/sources.list.d/* /etc/apt/restore/ ; apt-get update

Run the above commands on all the servers vm1 to vm5 before preconfig/provision_containers is run

self.exec_cmd('mkdir /etc/apt/restore ; mv /etc/apt/sources.list.d/* /etc/apt/restore/ ; apt-get update')

    def install_packages(self, sku):
        os_type, version, misc = self.os_version
        if os_type.lower() == 'ubuntu' and version == '12.04':
            packages_list = self.extra_packages_12_04
        elif os_type.lower() == 'ubuntu' and version == '14.04':
            packages_list = self.extra_packages_14_04
        elif os_type.lower() == 'ubuntu' and version == '16.04':
            if sku != 'ocata':
                packages_list = self.extra_packages_16_04
            else:
                packages_list = self.extra_packages_16_04_no_puppet
        else:
            raise RuntimeError('UnSupported OS type (%s)' % self.os_version)
        #self.exec_cmd('mkdir /etc/apt/restore ; mv /etc/apt/sources.list.d/* /etc/apt/restore/ ; apt-get update')
        for package in packages_list:
            self.exec_cmd('DEBIAN_FRONTEND=noninteractive apt-get -y --force-yes -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confnew" install %s' % package, error_on_fail=True)
        # remove the existing the driver to install the one you want
        self.exec_cmd('rmmod i40e')
        self.exec_cmd('modprobe i40e')
        self.exec_cmd('rmmod bnxt_en')
        self.exec_cmd('modprobe bnxt_en')
        self.exec_cmd('update-initramfs -k all -u')