Kubespray: using limit tag to add a node into current cluster

[zouyee]

found error like that:
TASK [kubernetes/preinstall : set_fact] ************
fatal: [lk-k8s-minion-1]: FAILED! => {"failed": true, "msg": "the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'dict object' has no attribute 'ansible_default_ipv4'\n\nThe error appears to have been in '/etc/ansible/kargo/roles/kubernetes/preinstall/tasks/set_facts.yml': line 14, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- set_fact:\n ^ here\n"}

Is this a BUG REPORT or FEATURE REQUEST? (choose one):

Environment:

• Cloud provider or hardware configuration:

• OS (printf "$(uname -srm)\n$(cat /etc/os-release)\n"):
  Linux 3.10.0-327.el7.x86_64 x86_64
  NAME="CentOS Linux"
  VERSION="7 (Core)"
  ID="centos"
  ID_LIKE="rhel fedora"
  VERSION_ID="7"
  PRETTY_NAME="CentOS Linux 7 (Core)"
  ANSI_COLOR="0;31"
  CPE_NAME="cpe:/o:centos:centos:7"
  HOME_URL="https://www.centos.org/"
  BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

• Version of Ansible (ansible --version):
  ansible 2.2.1.0
  config file = /etc/ansible/ansible.cfg
  configured module search path = Default w/o overrides

Kargo version (commit) (git rev-parse --short HEAD):
acae0fe

Network plugin used:

Copy of your inventory file:

Command used to invoke ansible:
/usr/bin/ansible-playbook -i /etc/ansible/kargo/inventory/hosts /etc/ansible/kargo/cluster.yml --limit k8s-minion-1

Output of ansible run:

Anything else do we need to know:

[aponomarenko]

Reproduced the same issue. Did you fixed/workaround it?

Can't add new nodes to a cluster created by Kubespray due to Ansible error:

TASK [kubernetes/preinstall : set_fact]     *****************************************************************************************************************************************************
fatal: [node7]: FAILED! => {"failed": true, "msg": "the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'unicode object' has no attribute 'address'\n\nThe error appears to have been in '/home/user/.kargo/roles/kubernetes/preinstall/tasks/set_facts.yml': line 14, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- set_fact:\n  ^ here\n"}

The command used to add a node:

ansible-playbook -u root --become-user=root -i ~/.kargo/inventory/inventory.cfg  ~/.kargo/cluster.yml -l node7

Inventory:

[kube-master]
node4
node5

[all]
node4 ansible_ssh_host=192.168.56.104
node5 ansible_ssh_host=192.168.56.105
node6 ansible_ssh_host=192.168.56.106
node7 ansible_ssh_host=192.168.56.107

[k8s-cluster:children]
kube-node
kube-master

[kube-node]
node4
node5
node6
node7

[etcd]
node4
node5
node6

Environment:

ansible 2.3.1.0
kargo 0.4.8 bddee7c38e386740b453430fe1c4c69266b08580

[alvinhom]

I ran into this problem also when I tried to add nodes to my Kubernetes cluster using kubespray and limit. The solution was:

Look at ansible.cfg for caching options, delete cache from /tmp if it exists and then run ansible -i {{inventory}} all -m setup to re create the cache.

After running the setup command, rerun kubespray with the --limit option and it works.

[ant31]

thank you for the solution @alvinhom