c12s-kubespray/roles/kubernetes/preinstall/tasks/main.yml

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---
- include: verify-settings.yml
tags:
- asserts
- name: Force binaries directory for Container Linux by CoreOS
set_fact:
bin_dir: "/opt/bin"
when: ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]
tags:
- facts
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- name: check bin dir exists
file:
path: "{{bin_dir}}"
state: directory
owner: root
become: true
tags:
- bootstrap-os
- include: set_facts.yml
tags:
- facts
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- name: gather os specific variables
include_vars: "{{ item }}"
with_first_found:
- files:
- "{{ ansible_distribution|lower }}-{{ ansible_distribution_version|lower|replace('/', '_') }}.yml"
- "{{ ansible_distribution|lower }}-{{ ansible_distribution_release }}.yml"
- "{{ ansible_distribution|lower }}-{{ ansible_distribution_major_version|lower|replace('/', '_') }}.yml"
- "{{ ansible_distribution|lower }}.yml"
- "{{ ansible_os_family|lower }}.yml"
- defaults.yml
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paths:
- ../vars
skip: true
tags:
- facts
- name: Create kubernetes directories
file:
path: "{{ item }}"
state: directory
owner: kube
when: inventory_hostname in groups['k8s-cluster']
tags:
- kubelet
- k8s-secrets
- kube-controller-manager
- kube-apiserver
- bootstrap-os
- apps
- network
- master
- node
with_items:
- "{{ kube_config_dir }}"
- "{{ kube_config_dir }}/ssl"
- "{{ kube_manifest_dir }}"
- "{{ kube_script_dir }}"
- "{{ local_volume_base_dir }}"
- name: check cloud_provider value
fail:
msg: "If set the 'cloud_provider' var must be set either to 'generic', 'gce', 'aws', 'azure', 'openstack' or 'vsphere'"
when:
- cloud_provider is defined
- cloud_provider not in ['generic', 'gce', 'aws', 'azure', 'openstack', 'vsphere']
tags:
- cloud-provider
- facts
- include: "{{ cloud_provider }}-credential-check.yml"
when:
- cloud_provider is defined
- cloud_provider in [ 'openstack', 'azure', 'vsphere' ]
tags:
- cloud-provider
- facts
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- name: Create cni directories
file:
path: "{{ item }}"
state: directory
owner: kube
with_items:
- "/etc/cni/net.d"
- "/opt/cni/bin"
when:
contiv network support (#1914) * Add Contiv support Contiv is a network plugin for Kubernetes and Docker. It supports vlan/vxlan/BGP/Cisco ACI technologies. It support firewall policies, multiple networks and bridging pods onto physical networks. * Update contiv version to 1.1.4 Update contiv version to 1.1.4 and added SVC_SUBNET in contiv-config. * Load openvswitch module to workaround on CentOS7.4 * Set contiv cni version to 0.1.0 Correct contiv CNI version to 0.1.0. * Use kube_apiserver_endpoint for K8S_API_SERVER Use kube_apiserver_endpoint as K8S_API_SERVER to make contiv talks to a available endpoint no matter if there's a loadbalancer or not. * Make contiv use its own etcd Before this commit, contiv is using a etcd proxy mode to k8s etcd, this work fine when the etcd hosts are co-located with contiv etcd proxy, however the k8s peering certs are only in etcd group, as a result the etcd-proxy is not able to peering with the k8s etcd on etcd group, plus the netplugin is always trying to find the etcd endpoint on localhost, this will cause problem for all netplugins not runnign on etcd group nodes. This commit make contiv uses its own etcd, separate from k8s one. on kube-master nodes (where net-master runs), it will run as leader mode and on all rest nodes it will run as proxy mode. * Use cp instead of rsync to copy cni binaries Since rsync has been removed from hyperkube, this commit changes it to use cp instead. * Make contiv-etcd able to run on master nodes * Add rbac_enabled flag for contiv pods * Add contiv into CNI network plugin lists * migrate contiv test to tests/files Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> * Add required rules for contiv netplugin * Better handling json return of fwdMode * Make contiv etcd port configurable * Use default var instead of templating * roles/download/defaults/main.yml: use contiv 1.1.7 Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com>
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- kube_network_plugin in ["calico", "weave", "canal", "flannel", "contiv"]
- inventory_hostname in groups['k8s-cluster']
tags:
- network
- calico
- weave
- canal
contiv network support (#1914) * Add Contiv support Contiv is a network plugin for Kubernetes and Docker. It supports vlan/vxlan/BGP/Cisco ACI technologies. It support firewall policies, multiple networks and bridging pods onto physical networks. * Update contiv version to 1.1.4 Update contiv version to 1.1.4 and added SVC_SUBNET in contiv-config. * Load openvswitch module to workaround on CentOS7.4 * Set contiv cni version to 0.1.0 Correct contiv CNI version to 0.1.0. * Use kube_apiserver_endpoint for K8S_API_SERVER Use kube_apiserver_endpoint as K8S_API_SERVER to make contiv talks to a available endpoint no matter if there's a loadbalancer or not. * Make contiv use its own etcd Before this commit, contiv is using a etcd proxy mode to k8s etcd, this work fine when the etcd hosts are co-located with contiv etcd proxy, however the k8s peering certs are only in etcd group, as a result the etcd-proxy is not able to peering with the k8s etcd on etcd group, plus the netplugin is always trying to find the etcd endpoint on localhost, this will cause problem for all netplugins not runnign on etcd group nodes. This commit make contiv uses its own etcd, separate from k8s one. on kube-master nodes (where net-master runs), it will run as leader mode and on all rest nodes it will run as proxy mode. * Use cp instead of rsync to copy cni binaries Since rsync has been removed from hyperkube, this commit changes it to use cp instead. * Make contiv-etcd able to run on master nodes * Add rbac_enabled flag for contiv pods * Add contiv into CNI network plugin lists * migrate contiv test to tests/files Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> * Add required rules for contiv netplugin * Better handling json return of fwdMode * Make contiv etcd port configurable * Use default var instead of templating * roles/download/defaults/main.yml: use contiv 1.1.7 Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com>
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- contiv
- bootstrap-os
- include: resolvconf.yml
when:
- dns_mode != 'none'
- resolvconf_mode == 'host_resolvconf'
tags:
- bootstrap-os
- resolvconf
- name: Update package management cache (YUM)
yum:
update_cache: yes
name: '*'
register: yum_task_result
until: yum_task_result|succeeded
retries: 4
delay: "{{ retry_stagger | random + 3 }}"
when:
- ansible_pkg_mgr == 'yum'
- not is_atomic
tags:
- bootstrap-os
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- name: Install latest version of python-apt for Debian distribs
apt:
name: python-apt
state: latest
update_cache: yes
cache_valid_time: 3600
when: ansible_os_family == "Debian"
tags:
- bootstrap-os
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- name: Install python-dnf for latest RedHat versions
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command: dnf install -y python-dnf yum
register: dnf_task_result
until: dnf_task_result|succeeded
retries: 4
delay: "{{ retry_stagger | random + 3 }}"
when:
- ansible_distribution == "Fedora"
- ansible_distribution_major_version > 21
- not is_atomic
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changed_when: False
tags:
- bootstrap-os
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- name: Install epel-release on RedHat/CentOS
shell: rpm -qa | grep epel-release || rpm -ivh {{ epel_rpm_download_url }}
register: epel_task_result
until: epel_task_result|succeeded
retries: 4
delay: "{{ retry_stagger | random + 3 }}"
changed_when: False
when:
- ansible_distribution in ["CentOS","RedHat"]
- not is_atomic
- epel_rpm_download_url != ''
- epel_enabled|bool
check_mode: no
tags:
- bootstrap-os
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- name: Install packages requirements
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action:
module: "{{ ansible_pkg_mgr }}"
name: "{{ item }}"
state: latest
register: pkgs_task_result
until: pkgs_task_result|succeeded
retries: 4
delay: "{{ retry_stagger | random + 3 }}"
with_items: "{{required_pkgs | default([]) | union(common_required_pkgs|default([]))}}"
when: not (ansible_os_family in ["CoreOS", "Container Linux by CoreOS"] or is_atomic)
tags:
- bootstrap-os
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# Todo : selinux configuration
- name: Confirm selinux deployed
stat:
path: /etc/selinux/config
when: ansible_os_family == "RedHat"
register: slc
- name: Set selinux policy
selinux:
policy: targeted
state: "{{ preinstall_selinux_state }}"
when:
- ansible_os_family == "RedHat"
- slc.stat.exists == True
changed_when: False
tags:
- bootstrap-os
- name: Disable IPv6 DNS lookup
lineinfile:
dest: /etc/gai.conf
line: "precedence ::ffff:0:0/96 100"
state: present
backup: yes
when:
- disable_ipv6_dns
- not ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]
tags:
- bootstrap-os
- name: set default sysctl file path
set_fact:
sysctl_file_path: "/etc/sysctl.d/99-sysctl.conf"
tags:
- bootstrap-os
- name: Stat sysctl file configuration
stat:
path: "{{sysctl_file_path}}"
register: sysctl_file_stat
tags:
- bootstrap-os
- name: Change sysctl file path to link source if linked
set_fact:
sysctl_file_path: "{{sysctl_file_stat.stat.lnk_source}}"
when:
- sysctl_file_stat.stat.islnk is defined
- sysctl_file_stat.stat.islnk
tags:
- bootstrap-os
- name: Enable ip forwarding
sysctl:
sysctl_file: "{{sysctl_file_path}}"
name: net.ipv4.ip_forward
value: 1
state: present
reload: yes
tags:
- bootstrap-os
- name: Write cloud-config
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template:
src: "{{ cloud_provider }}-cloud-config.j2"
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dest: "{{ kube_config_dir }}/cloud_config"
group: "{{ kube_cert_group }}"
mode: 0640
when:
- inventory_hostname in groups['k8s-cluster']
- cloud_provider is defined
- cloud_provider in [ 'openstack', 'azure', 'vsphere' ]
tags:
- cloud-provider
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- include: etchosts.yml
tags:
- bootstrap-os
- etchosts
- include: dhclient-hooks.yml
when:
- dns_mode != 'none'
- resolvconf_mode == 'host_resolvconf'
- not ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]
tags:
- bootstrap-os
- resolvconf
- include: dhclient-hooks-undo.yml
when:
- dns_mode != 'none'
- resolvconf_mode != 'host_resolvconf'
- not ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]
tags:
- bootstrap-os
- resolvconf
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- name: Check if we are running inside a Azure VM
stat:
path: /var/lib/waagent/
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register: azure_check
tags:
- bootstrap-os
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- include: growpart-azure-centos-7.yml
when:
- azure_check.stat.exists
- ansible_distribution in ["CentOS","RedHat"]
tags:
- bootstrap-os