title: Ansible: Failed to reload sysctl: sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory
body: <p>I'm setting up kubernetes cluster with ansible. I get the following error when trying to enable kernel IP routing:</p>
  
  <pre><code>Failed to reload sysctl: sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory
  </code></pre>
  
  <p>Is this a bug in ansible or is there something wrong with my playbook?</p>
  
  <pre><code>---
  # file: site.yml
  # description: Asentaa ja kaynnistaa kubernetes-klusterin riippuvuuksineen
  #
  # resources:
  #   - https://kubernetes.io/docs/setup/independent/install-kubeadm/
  #   - http://michele.sciabarra.com/2018/02/12/devops/Kubernetes-with-KubeAdm-Ansible-Vagrant/
  #   - https://docs.ansible.com/ansible/latest/modules/
  #   - https://github.com/geerlingguy/ansible-role-kubernetes/blob/master/tasks/setup-RedHat.yml
  #   - https://docs.docker.com/install/linux/docker-ce/centos/
  #
  # author: Tuomas Toivonen
  # date: 30.12.2018
  
  - name: Asenna docker ja kubernetes
  
    hosts: k8s-machines
    become: true
    become_method: sudo
  
    roles:
      - common
  
    vars:
      ip_modules:
        - ip_vs
        - ip_vs_rr
        - ip_vs_wrr
        - ip_vs_sh
        - nf_conntrack_ipv4
  
    tasks:
      - name: Poista swapfile
        tags:
          - os-settings
        mount:
          name: swap
          fstype: swap
          state: absent
  
      - name: Disabloi swap-muisti
        tags:
          - os-settings
        command: swapoff -a
        when: ansible_swaptotal_mb &gt; 0
  
      - name: Konfiguroi verkkoasetukset
        tags:
          - os-settings
        command: modprobe {{ item }}
        loop: "{{ ip_modules }}"
  
      - name: Modprobe
        tags:
          - os-settings
        lineinfile:
          path: "/etc/modules"
          line: "{{ item }}"
          create: yes
          state: present
        loop: "{{ ip_modules }}"
  
      - name: Iptables
        tags:
          - os-settings
        sysctl:
            name: "{{ item }}"
            value: 1
            sysctl_set: yes
            state: present
            reload: yes
        loop:
          - 'net.bridge.bridge-nf-call-iptables'
          - 'net.bridge.bridge-nf-call-ip6tables'
  
      - name: Salli IP-reititys
        sysctl:
          name: net.ipv4.ip_forward
          value: 1
          state: present
          reload: yes
          sysctl_set: yes
  
  
      - name: Lisaa docker-ce -repositorio
        tags:
          - repos
        yum_repository:
          name: docker-ce
          description: docker-ce
          baseurl: https://download.docker.com/linux/centos/7/x86_64/stable/
          enabled: true
          gpgcheck: true
          repo_gpgcheck: true
          gpgkey:
            - https://download.docker.com/linux/centos/gpg
          state: present
  
      - name: Lisaa kubernetes -repositorio
        tags:
          - repos
        yum_repository:
          name: kubernetes
          description: kubernetes
          baseurl: https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
          enabled: true
          gpgcheck: true
          repo_gpgcheck: true
          gpgkey:
            - https://packages.cloud.google.com/yum/doc/yum-key.gpg
            - https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
          state: present
  
      - name: Asenna docker-ce -paketti
        tags:
          - packages
        yum:
          name: docker-ce
          state: present
  
      - name: Asenna NTP -paketti
        tags:
          - packages
        yum:
          name: ntp
          state: present
  
      - name: Asenna kubernetes -paketit
        tags:
          - packages
        yum:
          name: "{{ item }}"
          state: present
        loop:
          - kubelet
          - kubeadm
          - kubectl
  
      - name: Kaynnista palvelut
        tags:
          - services
        service: name={{ item }} state=started enabled=yes
        loop:
          - docker
          - ntpd
          - kubelet
  
  - name: Alusta kubernetes masterit
    become: true
    become_method: sudo
    hosts: k8s-masters
    tags:
      - cluster
  
    tasks:
      - name: kubeadm reset
        shell: "kubeadm reset -f"
  
      - name: kubeadm init
        shell: "kubeadm init --token-ttl=0 --apiserver-advertise-address=10.0.0.101 --pod-network-cidr=20.0.0.0/8" # TODO
        register: kubeadm_out
  
      - set_fact:
          kubeadm_join: "{{ kubeadm_out.stdout_lines[-1] }}"
        when: kubeadm_out.stdout.find("kubeadm join") != -1
  
      - debug:
          var: kubeadm_join
  
      - name: Aseta ymparistomuuttujat
        shell: &gt;
            cp /etc/kubernetes/admin.conf /home/vagrant/ &amp;&amp;
            chown vagrant:vagrant /home/vagrant/admin.conf &amp;&amp;
            export KUBECONFIG=/home/vagrant/admin.conf &amp;&amp;
            echo export KUBECONFIG=$KUBECONFIG &gt;&gt; /home/vagrant/.bashrc
  
  - name: Konfiguroi CNI-verkko
    become: true
    become_method: sudo
    hosts: k8s-masters
    tags:
      - cluster-network
  
    tasks:
      - sysctl: name=net.bridge.bridge-nf-call-iptables value=1 state=present reload=yes sysctl_set=yes
      - sysctl: name=net.bridge.bridge-nf-call-ip6tables value=1 state=present reload=yes sysctl_set=yes
      - name: Asenna Flannel-plugin
        shell: &gt;
          export KUBECONFIG=/home/vagrant/admin.conf ;
          kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
  
      - shell: sleep 10
  
  - name: Alusta kubernetes workerit
    become: true
    become_method: sudo
    hosts: k8s-workers
    tags:
      - cluster
  
    tasks:
      - name: kubeadm reset
        shell: "kubeadm reset -f"
  
      - name: kubeadm join
        tags:
          - cluster
        shell: "{{ hostvars['k8s-n1'].kubeadm_join }}" # TODO
  </code></pre>
  
  <p>Here is the full ansible log</p>
  
  <pre><code>ansible-controller: Running ansible-playbook...
  cd /vagrant &amp;&amp; PYTHONUNBUFFERED=1 ANSIBLE_NOCOLOR=true ANSIBLE_CONFIG='ansible/ansible.cfg' ansible-playbook --limit="all" --inventory-file=ansible/hosts -v ansible/site.yml
  Using /vagrant/ansible/ansible.cfg as config file
  /vagrant/ansible/hosts did not meet host_list requirements, check plugin documentation if this is unexpected
  /vagrant/ansible/hosts did not meet script requirements, check plugin documentation if this is unexpected
  
  PLAY [Asenna docker ja kubernetes] *********************************************
  
  TASK [Gathering Facts] *********************************************************
  ok: [k8s-n1]
  ok: [k8s-n3]
  ok: [k8s-n2]
  
  TASK [common : Testaa] *********************************************************
  changed: [k8s-n3] =&gt; {"changed": true, "checksum": "6920e1826e439962050ec0ab4221719b3a045f04", "dest": "/template.test", "gid": 0, "group": "root", "md5sum": "a4f61c365318c3e23d466914fbd02687", "mode": "0644", "owner": "root", "secontext": "system_u:object_r:etc_runtime_t:s0", "size": 14, "src": "/home/vagrant/.ansible/tmp/ansible-tmp-1546760756.54-124542112178019/source", "state": "file", "uid": 0}
  changed: [k8s-n2] =&gt; {"changed": true, "checksum": "6920e1826e439962050ec0ab4221719b3a045f04", "dest": "/template.test", "gid": 0, "group": "root", "md5sum": "a4f61c365318c3e23d466914fbd02687", "mode": "0644", "owner": "root", "secontext": "system_u:object_r:etc_runtime_t:s0", "size": 14, "src": "/home/vagrant/.ansible/tmp/ansible-tmp-1546760756.51-240329169302936/source", "state": "file", "uid": 0}
  changed: [k8s-n1] =&gt; {"changed": true, "checksum": "6920e1826e439962050ec0ab4221719b3a045f04", "dest": "/template.test", "gid": 0, "group": "root", "md5sum": "a4f61c365318c3e23d466914fbd02687", "mode": "0644", "owner": "root", "secontext": "system_u:object_r:etc_runtime_t:s0", "size": 14, "src": "/home/vagrant/.ansible/tmp/ansible-tmp-1546760756.57-121244542660821/source", "state": "file", "uid": 0}
  
  TASK [common : Asenna telnet] **************************************************
  changed: [k8s-n2] =&gt; {"changed": true, "msg": "", "rc": 0, "results": ["Loaded plugins: fastestmirror\nLoading mirror speeds from cached hostfile\n * base: ftp.funet.fi\n * extras: ftp.funet.fi\n * updates: ftp.funet.fi\nResolving Dependencies\n--&gt; Running transaction check\n---&gt; Package telnet.x86_64 1:0.17-64.el7 will be installed\n--&gt; Finished Dependency Resolution\n\nDependencies Resolved\n\n================================================================================\n Package          Arch             Version                 Repository      Size\n================================================================================\nInstalling:\n telnet           x86_64           1:0.17-64.el7           base            64 k\n\nTransaction Summary\n================================================================================\nInstall  1 Package\n\nTotal download size: 64 k\nInstalled size: 113 k\nDownloading packages:\nRunning transaction check\nRunning transaction test\nTransaction test succeeded\nRunning transaction\n  Installing : 1:telnet-0.17-64.el7.x86_64                                  1/1 \n  Verifying  : 1:telnet-0.17-64.el7.x86_64                                  1/1 \n\nInstalled:\n  telnet.x86_64 1:0.17-64.el7                                                   \n\nComplete!\n"]}
  changed: [k8s-n1] =&gt; {"changed": true, "msg": "", "rc": 0, "results": ["Loaded plugins: fastestmirror\nLoading mirror speeds from cached hostfile\n * base: centos.mirror.gnu.fi\n * extras: centos.mirror.gnu.fi\n * updates: centos.mirror.gnu.fi\nResolving Dependencies\n--&gt; Running transaction check\n---&gt; Package telnet.x86_64 1:0.17-64.el7 will be installed\n--&gt; Finished Dependency Resolution\n\nDependencies Resolved\n\n================================================================================\n Package          Arch             Version                 Repository      Size\n================================================================================\nInstalling:\n telnet           x86_64           1:0.17-64.el7           base            64 k\n\nTransaction Summary\n================================================================================\nInstall  1 Package\n\nTotal download size: 64 k\nInstalled size: 113 k\nDownloading packages:\nRunning transaction check\nRunning transaction test\nTransaction test succeeded\nRunning transaction\n  Installing : 1:telnet-0.17-64.el7.x86_64                                  1/1 \n  Verifying  : 1:telnet-0.17-64.el7.x86_64                                  1/1 \n\nInstalled:\n  telnet.x86_64 1:0.17-64.el7                                                   \n\nComplete!\n"]}
  changed: [k8s-n3] =&gt; {"changed": true, "msg": "", "rc": 0, "results": ["Loaded plugins: fastestmirror\nLoading mirror speeds from cached hostfile\n * base: ftp.funet.fi\n * extras: ftp.funet.fi\n * updates: ftp.funet.fi\nResolving Dependencies\n--&gt; Running transaction check\n---&gt; Package telnet.x86_64 1:0.17-64.el7 will be installed\n--&gt; Finished Dependency Resolution\n\nDependencies Resolved\n\n================================================================================\n Package          Arch             Version                 Repository      Size\n================================================================================\nInstalling:\n telnet           x86_64           1:0.17-64.el7           base            64 k\n\nTransaction Summary\n================================================================================\nInstall  1 Package\n\nTotal download size: 64 k\nInstalled size: 113 k\nDownloading packages:\nRunning transaction check\nRunning transaction test\nTransaction test succeeded\nRunning transaction\n  Installing : 1:telnet-0.17-64.el7.x86_64                                  1/1 \n  Verifying  : 1:telnet-0.17-64.el7.x86_64                                  1/1 \n\nInstalled:\n  telnet.x86_64 1:0.17-64.el7                                                   \n\nComplete!\n"]}
  
  TASK [Poista swapfile] *********************************************************
  ok: [k8s-n1] =&gt; {"changed": false, "dump": "0", "fstab": "/etc/fstab", "fstype": "swap", "name": "swap", "opts": "defaults", "passno": "0"}
  ok: [k8s-n2] =&gt; {"changed": false, "dump": "0", "fstab": "/etc/fstab", "fstype": "swap", "name": "swap", "opts": "defaults", "passno": "0"}
  ok: [k8s-n3] =&gt; {"changed": false, "dump": "0", "fstab": "/etc/fstab", "fstype": "swap", "name": "swap", "opts": "defaults", "passno": "0"}
  
  TASK [Disabloi swap-muisti] ****************************************************
  changed: [k8s-n3] =&gt; {"changed": true, "cmd": ["swapoff", "-a"], "delta": "0:00:00.009581", "end": "2019-01-06 07:46:08.414842", "rc": 0, "start": "2019-01-06 07:46:08.405261", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n1] =&gt; {"changed": true, "cmd": ["swapoff", "-a"], "delta": "0:00:00.119638", "end": "2019-01-06 07:46:08.484265", "rc": 0, "start": "2019-01-06 07:46:08.364627", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n2] =&gt; {"changed": true, "cmd": ["swapoff", "-a"], "delta": "0:00:00.133924", "end": "2019-01-06 07:46:08.519646", "rc": 0, "start": "2019-01-06 07:46:08.385722", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  
  TASK [Konfiguroi verkkoasetukset] **********************************************
  changed: [k8s-n2] =&gt; (item=ip_vs) =&gt; {"changed": true, "cmd": ["modprobe", "ip_vs"], "delta": "0:00:00.036881", "end": "2019-01-06 07:46:10.606797", "item": "ip_vs", "rc": 0, "start": "2019-01-06 07:46:10.569916", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n3] =&gt; (item=ip_vs) =&gt; {"changed": true, "cmd": ["modprobe", "ip_vs"], "delta": "0:00:00.036141", "end": "2019-01-06 07:46:10.815043", "item": "ip_vs", "rc": 0, "start": "2019-01-06 07:46:10.778902", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n1] =&gt; (item=ip_vs) =&gt; {"changed": true, "cmd": ["modprobe", "ip_vs"], "delta": "0:00:00.035888", "end": "2019-01-06 07:46:10.768267", "item": "ip_vs", "rc": 0, "start": "2019-01-06 07:46:10.732379", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n2] =&gt; (item=ip_vs_rr) =&gt; {"changed": true, "cmd": ["modprobe", "ip_vs_rr"], "delta": "0:00:00.005942", "end": "2019-01-06 07:46:12.763004", "item": "ip_vs_rr", "rc": 0, "start": "2019-01-06 07:46:12.757062", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n1] =&gt; (item=ip_vs_rr) =&gt; {"changed": true, "cmd": ["modprobe", "ip_vs_rr"], "delta": "0:00:00.006084", "end": "2019-01-06 07:46:12.896763", "item": "ip_vs_rr", "rc": 0, "start": "2019-01-06 07:46:12.890679", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n3] =&gt; (item=ip_vs_rr) =&gt; {"changed": true, "cmd": ["modprobe", "ip_vs_rr"], "delta": "0:00:00.006325", "end": "2019-01-06 07:46:12.899750", "item": "ip_vs_rr", "rc": 0, "start": "2019-01-06 07:46:12.893425", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n2] =&gt; (item=ip_vs_wrr) =&gt; {"changed": true, "cmd": ["modprobe", "ip_vs_wrr"], "delta": "0:00:00.006195", "end": "2019-01-06 07:46:14.795507", "item": "ip_vs_wrr", "rc": 0, "start": "2019-01-06 07:46:14.789312", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n1] =&gt; (item=ip_vs_wrr) =&gt; {"changed": true, "cmd": ["modprobe", "ip_vs_wrr"], "delta": "0:00:00.007328", "end": "2019-01-06 07:46:14.819072", "item": "ip_vs_wrr", "rc": 0, "start": "2019-01-06 07:46:14.811744", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n3] =&gt; (item=ip_vs_wrr) =&gt; {"changed": true, "cmd": ["modprobe", "ip_vs_wrr"], "delta": "0:00:00.007251", "end": "2019-01-06 07:46:14.863192", "item": "ip_vs_wrr", "rc": 0, "start": "2019-01-06 07:46:14.855941", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n3] =&gt; (item=ip_vs_sh) =&gt; {"changed": true, "cmd": ["modprobe", "ip_vs_sh"], "delta": "0:00:00.007590", "end": "2019-01-06 07:46:16.815226", "item": "ip_vs_sh", "rc": 0, "start": "2019-01-06 07:46:16.807636", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n1] =&gt; (item=ip_vs_sh) =&gt; {"changed": true, "cmd": ["modprobe", "ip_vs_sh"], "delta": "0:00:00.006380", "end": "2019-01-06 07:46:16.941470", "item": "ip_vs_sh", "rc": 0, "start": "2019-01-06 07:46:16.935090", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n2] =&gt; (item=ip_vs_sh) =&gt; {"changed": true, "cmd": ["modprobe", "ip_vs_sh"], "delta": "0:00:00.006619", "end": "2019-01-06 07:46:16.808432", "item": "ip_vs_sh", "rc": 0, "start": "2019-01-06 07:46:16.801813", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n3] =&gt; (item=nf_conntrack_ipv4) =&gt; {"changed": true, "cmd": ["modprobe", "nf_conntrack_ipv4"], "delta": "0:00:00.007618", "end": "2019-01-06 07:46:18.825593", "item": "nf_conntrack_ipv4", "rc": 0, "start": "2019-01-06 07:46:18.817975", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n1] =&gt; (item=nf_conntrack_ipv4) =&gt; {"changed": true, "cmd": ["modprobe", "nf_conntrack_ipv4"], "delta": "0:00:00.008181", "end": "2019-01-06 07:46:18.910050", "item": "nf_conntrack_ipv4", "rc": 0, "start": "2019-01-06 07:46:18.901869", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  changed: [k8s-n2] =&gt; (item=nf_conntrack_ipv4) =&gt; {"changed": true, "cmd": ["modprobe", "nf_conntrack_ipv4"], "delta": "0:00:00.007427", "end": "2019-01-06 07:46:18.962850", "item": "nf_conntrack_ipv4", "rc": 0, "start": "2019-01-06 07:46:18.955423", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}
  
  TASK [Modprobe] ****************************************************************
  changed: [k8s-n2] =&gt; (item=ip_vs) =&gt; {"backup": "", "changed": true, "item": "ip_vs", "msg": "line added"}
  changed: [k8s-n1] =&gt; (item=ip_vs) =&gt; {"backup": "", "changed": true, "item": "ip_vs", "msg": "line added"}
  changed: [k8s-n3] =&gt; (item=ip_vs) =&gt; {"backup": "", "changed": true, "item": "ip_vs", "msg": "line added"}
  changed: [k8s-n2] =&gt; (item=ip_vs_rr) =&gt; {"backup": "", "changed": true, "item": "ip_vs_rr", "msg": "line added"}
  changed: [k8s-n1] =&gt; (item=ip_vs_rr) =&gt; {"backup": "", "changed": true, "item": "ip_vs_rr", "msg": "line added"}
  changed: [k8s-n3] =&gt; (item=ip_vs_rr) =&gt; {"backup": "", "changed": true, "item": "ip_vs_rr", "msg": "line added"}
  changed: [k8s-n2] =&gt; (item=ip_vs_wrr) =&gt; {"backup": "", "changed": true, "item": "ip_vs_wrr", "msg": "line added"}
  changed: [k8s-n1] =&gt; (item=ip_vs_wrr) =&gt; {"backup": "", "changed": true, "item": "ip_vs_wrr", "msg": "line added"}
  changed: [k8s-n3] =&gt; (item=ip_vs_wrr) =&gt; {"backup": "", "changed": true, "item": "ip_vs_wrr", "msg": "line added"}
  changed: [k8s-n2] =&gt; (item=ip_vs_sh) =&gt; {"backup": "", "changed": true, "item": "ip_vs_sh", "msg": "line added"}
  changed: [k8s-n1] =&gt; (item=ip_vs_sh) =&gt; {"backup": "", "changed": true, "item": "ip_vs_sh", "msg": "line added"}
  changed: [k8s-n3] =&gt; (item=ip_vs_sh) =&gt; {"backup": "", "changed": true, "item": "ip_vs_sh", "msg": "line added"}
  changed: [k8s-n2] =&gt; (item=nf_conntrack_ipv4) =&gt; {"backup": "", "changed": true, "item": "nf_conntrack_ipv4", "msg": "line added"}
  changed: [k8s-n1] =&gt; (item=nf_conntrack_ipv4) =&gt; {"backup": "", "changed": true, "item": "nf_conntrack_ipv4", "msg": "line added"}
  changed: [k8s-n3] =&gt; (item=nf_conntrack_ipv4) =&gt; {"backup": "", "changed": true, "item": "nf_conntrack_ipv4", "msg": "line added"}
  
  TASK [Iptables] ****************************************************************
  failed: [k8s-n3] (item=net.bridge.bridge-nf-call-iptables) =&gt; {"changed": false, "item": "net.bridge.bridge-nf-call-iptables", "msg": "Failed to reload sysctl: sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory\n"}
  failed: [k8s-n1] (item=net.bridge.bridge-nf-call-iptables) =&gt; {"changed": false, "item": "net.bridge.bridge-nf-call-iptables", "msg": "Failed to reload sysctl: sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory\n"}
  failed: [k8s-n2] (item=net.bridge.bridge-nf-call-iptables) =&gt; {"changed": false, "item": "net.bridge.bridge-nf-call-iptables", "msg": "Failed to reload sysctl: sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory\n"}
  failed: [k8s-n3] (item=net.bridge.bridge-nf-call-ip6tables) =&gt; {"changed": false, "item": "net.bridge.bridge-nf-call-ip6tables", "msg": "Failed to reload sysctl: sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory\nsysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-ip6tables: No such file or directory\n"}
  failed: [k8s-n2] (item=net.bridge.bridge-nf-call-ip6tables) =&gt; {"changed": false, "item": "net.bridge.bridge-nf-call-ip6tables", "msg": "Failed to reload sysctl: sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory\nsysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-ip6tables: No such file or directory\n"}
  failed: [k8s-n1] (item=net.bridge.bridge-nf-call-ip6tables) =&gt; {"changed": false, "item": "net.bridge.bridge-nf-call-ip6tables", "msg": "Failed to reload sysctl: sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory\nsysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-ip6tables: No such file or directory\n"}
          to retry, use: --limit @/vagrant/ansible/site.retry
  
  PLAY RECAP *********************************************************************
  k8s-n1                     : ok=7    changed=5    unreachable=0    failed=1
  k8s-n2                     : ok=7    changed=5    unreachable=0    failed=1
  k8s-n3                     : ok=7    changed=5    unreachable=0    failed=1
  
  Ansible failed to complete successfully. Any error output should be
  visible above. Please fix these errors and try again.
  </code></pre>