Ansible随记

For linux and kubernetes

Hosts config

[k8s]
k8s-node-1 ansible_ssh_host=172.16.139.102
k8s-node-2 ansible_ssh_host=172.16.139.103
k8s-node-3 ansible_ssh_host=172.16.139.104

[test]
192.168.1.250 ansible_ssh_port=1234
192.168.1.251 ansible_ssh_user=xxx ansible_ssh_pass=yyy

Module

selinux

ansible k8s -m selinux -m selinux -a state=disabled

https://my.oschina.net/ozakilsc/blog/693023

shell

ansible k8s -m shell -a getenforce

ansible k8s -m shell -a hostname

ansible k8s -m shell -a "iptables -F && iptables -X && iptables -F -t nat && iptables -t nat -X && iptables -t raw -F && iptables -t raw -X && iptables -t mangle -F && iptables -t mangle -X"

ansible k8s -m shell -a "modprobe bridge && modprobe br_netfilter && sysctl -p /etc/sysctl.d/kubernetes.conf"

ansible k8s -m shell -a "timedatectl set-timezone Asia/Shanghai && timedatectl status"

ansible all -m shell -a "rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm"

ansible all -m shell -a "yum --enablerepo=elrepo-kernel install -y kernel-lt"

ansible all -m shell -a "grub2-set-default 0"

ping

(用于判断远程客户端是否在线)

ansible k8s -m ping

command

(ansible default module)

yum

(default state:installed)

ansible k8s -m yum -a 'name=vim state=installed'

ansible k8s -m yum -a 'name=vim'

ansible k8s -m yum -a 'name=vim, httpd'

ansible k8s -km yum -a "name=yum-utils,chrony,conntrack,ipvsadm,ipset,jq,iptables,curl,sysstat,libseccomp,wget,socat,git"

ansible k8s -m yum -a 'name=vsftpd  state=removed'

ansible k8s -m yum -a "name=bridge-utils"
ansible all -m yum -a "name=epel-release,chrony,conntrack,ipvsadm,ipset,jq,iptables,curl,sysstat,libseccomp,wget,socat,git,bind-utils state=installed"

service

ansible k8s -m service -a " name='nginx' enabled=yes"

ansible k8s -m service -a "name=httpd state=started"

ansible k8s -m service -a "name=firewalld state=stopped enabled=no"

ansible k8s -km service -a "name=postfix state=stopped enabled=no"

ansible k8s -m service -a "name=chronyd enabled=yes state=started"

copy

ansible k8s -m copy -a "src=./kubernetes.conf dest=/etc/sysctl.d/"

file

ansible k8s -m file -a "path=/opt/k8s/bin state=directory"

ansible k8s -m file -a "path=/opt/k8s/work state=directory"

ansible k8s -m file -a "path=/opt/k8s/work state=absent"

others

ansible k8s -m shell -a "rpm --import file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7"

Playbook

copy

---
- hosts: all
  tasks:
    - name: copy kubernetes server executeable file to master node
      copy:
        src: '{{ item.src }}'
        dest: '{{item.dest}}'
        mode: '0744'
      with_items:
       - {src: './apiextensions-apiserver', dest: '/opt/k8s/bin/'}
       - {src: './kubeadm', dest: '/opt/k8s/bin/'}
       - {src: './kube-apiserver', dest: '/opt/k8s/bin/'}
       - {src: './kube-controller-manager', dest: '/opt/k8s/bin/'}
       - {src: './kubectl', dest: '/opt/k8s/bin/'}
       - {src: './kubelet', dest: '/opt/k8s/bin/'}
       - {src: './kube-proxy', dest: '/opt/k8s/bin/'}
       - {src: './kube-scheduler', dest: '/opt/k8s/bin/'}
       - {src: './mounter', dest: '/opt/k8s/bin/'}