IBM Cloud Private 2.1.0.3 The conditional check failed - docker

Question

I am trying to install the IBM Private Cloud Community Edition but struggle with the execution of the sudo docker run command from the installation instructions:
> sudo docker run --net=host -t -e LICENSE=accept -v "$(pwd)":/installer/cluster ibmcom/icp-inception:2.1.0.3 install
When I execute it, it returns following output with error message (below):
user#kim:/opt/ibm-cloud-private-ce-2.1.0.3/cluster$ sudo docker run --net=host -t -e LICENSE=accept -v "$(pwd)":/installer/cluster ibmcom/icp-inception:2.1.0.3 install
PLAY [Checking Python interpreter] *********************************************
TASK [Checking Python interpreter] *********************************************
changed: [127.0.0.1]
PLAY [Checking prerequisites] **************************************************
TASK [Gathering Facts] *********************************************************
ok: [127.0.0.1]
TASK [docker-engine-check : Getting Docker engine version] *********************
changed: [127.0.0.1]
TASK [docker-engine-check : Checking docker engine if installed] ***************
changed: [127.0.0.1]
TASK [docker-engine : include] *************************************************
TASK [docker-engine : include] *************************************************
TASK [containerd-engine-check : Getting containerd version] ********************
TASK [containerd-engine-check : Checking cri-containerd if installed] **********
TASK [containerd-engine : include] *********************************************
TASK [containerd-engine : include] *********************************************
TASK [network-check : Checking for the network pre-check file] *****************
ok: [127.0.0.1 -> localhost]
TASK [network-check : include_tasks] *******************************************
included: /installer/playbook/roles/network-check/tasks/calico.yaml for 127.0.0.1
TASK [network-check : Calico Validation - Verifying hostname for lowercase] ****
TASK [network-check : Calico Validation - Initializing interface list to be verified] ***
ok: [127.0.0.1]
TASK [network-check : Calico Validation - Finding Interface when autodetection_method is first-found] ***
TASK [network-check : Calico Validation - Updating regex string to match interfaces to be excluded] ***
TASK [network-check : Calico Validation - Getting list of interfaces to be considered] ***
TASK [network-check : Calico Validation - Excluding default interface if defined] ***
TASK [network-check : Calico Validation - Finding Interface reg-ex when autodetection_method is interface(reg-ex)] ***
TASK [network-check : Calico Validation - Finding Interface when autodetection_method is interface(reg-ex)] ***
TASK [network-check : Calico Validation - Finding Domain/IP when autodetection_method is can-reach] ***
ok: [127.0.0.1]
TASK [network-check : Calico Validation - Finding IP for the Domain when autodetection_method is can-reach] ***
changed: [127.0.0.1]
TASK [network-check : Calico Validation - Finding Interface when autodetection_method is can-reach] ***
changed: [127.0.0.1]
TASK [network-check : Calico Validation - Finding Interface when lo is found] ***
changed: [127.0.0.1]
TASK [network-check : Calico Validation - Finding Interface when autodetection_method is can-reach] ***
ok: [127.0.0.1]
TASK [network-check : Calico Validation - Finding MTU for the detected Interface(s)] ***
fatal: [127.0.0.1]: FAILED! => {"msg": "The conditional check 'hostvars[inventory_hostname]['ansible_'~item]['mtu'] is defined' failed. The error was: error while evaluating conditional (hostvars[inventory_hostname]['ansible_'~item]['mtu'] is defined): 'dict object' has no attribute u'ansible_'\n\nThe error appears to have been in '/installer/playbook/roles/network-check/tasks/calico.yaml': line 86, column 7, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n - name: Calico Validation - Finding MTU for the detected Interface(s)\n ^ here\n"}
NO MORE HOSTS LEFT *************************************************************
NO MORE HOSTS LEFT *************************************************************
PLAY RECAP *********************************************************************
127.0.0.1 : ok=12 changed=6 unreachable=0 failed=1
Playbook run took 0 days, 0 hours, 0 minutes, 13 seconds
user#kim:/opt/ibm-cloud-private-ce-2.1.0.3/cluster$
I am working on Ubuntu 14.04 with Docker version 17.12.1-ce, build 7390fc6.
My host file looks like this:
[master]
127.0.0.1 ansible_user="user" ansible_ssh_pass="6CEd29CN" ansible_become=true ansible_become_pass="6CEd29CN" ansible_port="22" ansible_ssh_common_args="-oPubkeyAuthentication=no"
[worker]
127.0.0.1 ansible_user="user" ansible_ssh_pass="6CEd29CN" ansible_become=true ansible_become_pass="6CEd29CN" ansible_port="22" ansible_ssh_common_args="-oPubkeyAuthentication=no"
[proxy]
127.0.0.1 ansible_user="user" ansible_ssh_pass="6CEd29CN" ansible_become=true ansible_become_pass="6CEd29CN" ansible_port="22" ansible_ssh_common_args="-oPubkeyAuthentication=no"
#[management]
#4.4.4.4
#[va]
#5.5.5.5
The yaml.cfg file looks like this:
# Licensed Materials - Property of IBM
# IBM Cloud private
# # Copyright IBM Corp. 2017 All Rights Reserved
# US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
---
###### docker0: 172.17.0.1
###### eth0: 192.168.240.14
## Network Settings
network_type: calico
# network_helm_chart_path: < helm chart path >
## Network in IPv4 CIDR format
network_cidr: 127.0.0.1/8
## Kubernetes Settings
service_cluster_ip_range: 127.0.0.1/24
## Makes the Kubelet start if swap is enabled on the node. Remove
## this if your production env want to disble swap.
kubelet_extra_args: ["--fail-swap-on=false"]
# cluster_domain: cluster.local
# cluster_name: mycluster
# cluster_CA_domain: "{{ cluster_name }}.icp"
# cluster_zone: "myzone"
# cluster_region: "myregion"
## Etcd Settings
etcd_extra_args: ["--grpc-keepalive-timeout=0", "--grpc-keepalive-interval=0", "--snapshot-count=10000"]
## General Settings
# wait_for_timeout: 600
# docker_api_timeout: 100
## Advanced Settings
default_admin_user: user
default_admin_password: 6CEd29CN
# ansible_user: <username>
# ansible_become: true
# ansible_become_password: <password>
## Kubernetes Settings
# kube_apiserver_extra_args: []
# kube_controller_manager_extra_args: []
# kube_proxy_extra_args: []
# kube_scheduler_extra_args: []
## Enable Kubernetes Audit Log
# auditlog_enabled: false
## GlusterFS Settings
# glusterfs: false
## GlusterFS Storage Settings
# storage:
# - kind: glusterfs
# nodes:
# - ip: <worker_node_m_IP_address>
# device: <link path>/<symlink of device aaa>,<link path>/<symlink of device bbb>
# - ip: <worker_node_n_IP_address>
# device: <link path>/<symlink of device ccc>
# - ip: <worker_node_o_IP_address>
# device: <link path>/<symlink of device ddd>
# storage_class:
# name:
# default: false
# volumetype: replicate:3
## Network Settings
## Calico Network Settings
# calico_ipip_enabled: true
# calico_tunnel_mtu: 1430
calico_ip_autodetection_method: can-reach=127.0.0.1
## IPSec mesh Settings
## If user wants to configure IPSec mesh, the following parameters
## should be configured through config.yaml
# ipsec_mesh:
# enable: true
# interface: <interface name on which IPsec will be enabled>
# subnets: []
# exclude_ips: "<list of IP addresses separated by a comma>"
# kube_apiserver_secure_port: 8001
## External loadbalancer IP or domain
## Or floating IP in OpenStack environment
# cluster_lb_address: none
## External loadbalancer IP or domain
## Or floating IP in OpenStack environment
# proxy_lb_address: none
## Install in firewall enabled mode
# firewall_enabled: false
## Allow loopback dns server in cluster nodes
# loopback_dns: false
## High Availability Settings
# vip_manager: etcd
## High Availability Settings for master nodes
# vip_iface: eth0
# cluster_vip: 127.0.1.1
## High Availability Settings for Proxy nodes
# proxy_vip_iface: eth0
# proxy_vip: 127.0.1.1
## Federation cluster Settings
# federation_enabled: false
# federation_cluster: federation-cluster
# federation_domain: cluster.federation
# federation_apiserver_extra_args: []
# federation_controllermanager_extra_args: []
# federation_external_policy_engine_enabled: false
## vSphere cloud provider Settings
## If user wants to configure vSphere as cloud provider, vsphere_conf
## parameters should be configured through config.yaml
# kubelet_nodename: hostname
# cloud_provider: vsphere
# vsphere_conf:
# user: <vCenter username for vSphere cloud provider>
# password: <password for vCenter user>
# server: <vCenter server IP or FQDN>
# port: [vCenter Server Port; default: 443]
# insecure_flag: [set to 1 if vCenter uses a self-signed certificate]
# datacenter: <datacenter name on which Node VMs are deployed>
# datastore: <default datastore to be used for provisioning volumes>
# working_dir: <vCenter VM folder path in which node VMs are located>
## Disabled Management Services Settings
## You can disable the following management services: ["service-catalog", "metering", "monitoring", "istio", "vulnerability-advisor", "custom-metrics-adapter"]
disabled_management_services: ["istio", "vulnerability-advisor", "custom-metrics-adapter"]
## Docker Settings
# docker_env: []
# docker_extra_args: []
## The maximum size of the log before it is rolled
# docker_log_max_size: 50m
## The maximum number of log files that can be present
# docker_log_max_file: 10
## Install/upgrade docker version
# docker_version: 17.12.1
## ICP install docker automatically
# install_docker: true
## Ingress Controller Settings
## You can add your ingress controller configuration, and the allowed configuration can refer to
## https://github.com/kubernetes/ingress-nginx/blob/nginx-0.9.0/docs/user-guide/configmap.md#configuration-options
# ingress_controller:
# disable-access-log: 'true'
## Clean metrics indices in Elasticsearch older than this number of days
# metrics_max_age: 1
## Clean application log indices in Elasticsearch older than this number of days
# logs_maxage: 1
## Uncomment the line below to install Kibana as a managed service.
# kibana_install: true
# STARTING_CLOUDANT
# cloudant:
# namespace: kube-system
# pullPolicy: IfNotPresent
# pvPath: /opt/ibm/cfc/cloudant
# database:
# password: fdrreedfddfreeedffde
# federatorCommand: hostname
# federationIdentifier: "-0"
# readinessProbePeriodSeconds: 2
# readinessProbeInitialDelaySeconds: 90
# END_CLOUDANT
My goal is to set up ICP on my local machine (single node) and I'm very thankful for any help regarding this issue.

Answer 1

So I resolved this error by uncommenting and setting # calico_ipip_enabled: true to false.
After that though I got another error because of my loopback ip:
fatal: [127.0.0.1] => A loopback IP is used in your DNS server configuration. For more details, see https://ibm.biz/dns-fails.
But there is an fix/workaround by setting loopback_dns: true as mentioned in the link.
I can't close this question here but this is how I resolved it.

Answer 2

IBM Cloud private suppoted OS is ubuntu 16.04 .Please check the below url
https://www.ibm.com/support/knowledgecenter/SSBS6K_2.1.0.3/supported_system_config/supported_os.html
Please check the system requirement..
I am also trying to install the setup.. I didnt face this issue.

Answer 3

Normally, we can not specify 127.0.0.1 as ICP node in ICP hosts file, thanks.