ansible-install-k8s 之 1 初始化环境

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简介: ansible-install-k8s 之 1 初始化环境

安装配置ansible

安装

dnf install -y ansible

配置

echo "[defaults]" >> /etc/ansible/ansible.cfg
echo "host_key_checking = false" >>/etc/ansible/ansible.cfg
ansible-playbook 结构 /root 目录下

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├── deplyment
│ └── install_k8s_os_init.yml
├── hosts
├── roles
│ └── init
│ ├── files
│ │ ├── epel.repo
│ │ ├── ipvs_br_netfilter.conf
│ │ ├── limits.conf
│ │ ├── k8s.conf
│ │ ├── hosts
│ │ ├── rocky-addons.repo
│ │ ├── rocky-devel.repo
│ │ ├── rocky-extras.repo
│ │ └── rocky.repo
│ ├── tasks
│ │ └── main.yml
│ └── templates
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部署命令:

ansible-playbook -i hosts deplyment/install_k8s_os_init.yml
各个文件内容

install_k8s_osinit.yml


  • hosts: init
    roles:
    • ../roles/init
      epel.repo

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[epel]
name=Extra Packages for Enterprise Linux $releasever - $basearch
baseurl=https://mirrors.aliyun.com/epel/$releasever/Everything/$basearch/
enabled=1
gpgcheck=1
countme=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-$releasever

[epel-debuginfo]
name=Extra Packages for Enterprise Linux $releasever - $basearch - Debug
baseurl=https://mirrors.aliyun.com/epel/$releasever/Everything/$basearch/debug/
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-$releasever
gpgcheck=1

[epel-source]
name=Extra Packages for Enterprise Linux $releasever - $basearch - Source
baseurl=https://mirrors.aliyun.com/epel/$releasever/Everything/source/tree/
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-$releasever
gpgcheck=1
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ipvs_br_netfilter.conf

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ip_vs
ip_vs_rr
ip_vs_wrr
ip_vs_sh
nf_conntrack
br_netfilter
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limits.conf

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/etc/security/limits.conf

  • hard nproc 655360
  • hard nofile 655360
    root hard nproc 655360
    root hard nofile 655360

    End of file

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    k8s.conf

net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
hosts

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127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

k8s-dep

192.168.0.200 k8s-dep-200

k8s-master

192.168.0.201 k8s-m1-c1-201
192.168.0.202 k8s-m2-c2-202
192.168.0.203 k8s-m3-c3-203

k8s-node

192.168.0.204 k8s-n1-204
192.168.0.205 k8s-n2-205
192.168.0.206 k8s-n3-206
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rocky-addons.repo

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rocky-addons.repo

[highavailability]
name=Rocky Linux $releasever - High Availability
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/HighAvailability/$basearch/os/
gpgcheck=1
enabled=0
countme=1
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[highavailability-debuginfo]
name=Rocky Linux $releasever - High Availability - Debug
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/HighAvailability/$basearch/debug/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[highavailability-source]
name=Rocky Linux $releasever - High Availability - Source
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/HighAvailability/source/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[resilientstorage]
name=Rocky Linux $releasever - Resilient Storage
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/ResilientStorage/$basearch/os/
gpgcheck=1
enabled=0
countme=1
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[resilientstorage-debuginfo]
name=Rocky Linux $releasever - Resilient Storage - Debug
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/ResilientStorage/$basearch/debug/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[resilientstorage-source]
name=Rocky Linux $releasever - Resilient Storage - Source
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/ResilientStorage/source/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9
[nfv]
name=Rocky Linux $releasever - NFV
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/NFV/$basearch/os/
gpgcheck=1
enabled=0
countme=1
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[nfv-debuginfo]
name=Rocky Linux $releasever - NFV Debug
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/NFV/$basearch/debug/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[nfv-source]
name=Rocky Linux $releasever - NFV Source
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/NFV/source/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[rt]
name=Rocky Linux $releasever - Realtime
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/RT/$basearch/os/
gpgcheck=1
enabled=0
countme=1
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[rt-debuginfo]
name=Rocky Linux $releasever - Realtime Debug
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/RT/$basearch/debug/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[rt-source]
name=Rocky Linux $releasever - Realtime Source
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/RT/source/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[sap]
name=Rocky Linux $releasever - SAP
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/SAP/$basearch/os/
gpgcheck=1
enabled=0
countme=1
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[sap-debuginfo]
name=Rocky Linux $releasever - SAP Debug
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/SAP/$basearch/debug/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[sap-source]
name=Rocky Linux $releasever - SAP Source
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/SAP/source/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[saphana]
name=Rocky Linux $releasever - SAPHANA
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/SAPHANA/$basearch/os/
gpgcheck=1
enabled=0
countme=1
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[saphana-debuginfo]
name=Rocky Linux $releasever - SAPHANA Debug
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/SAPHANA/$basearch/debug/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[saphana-source]
name=Rocky Linux $releasever - SAPHANA Source
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/SAPHANA/source/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9
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rocky-devel.repo

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rocky-devel.repo

[devel]
name=Rocky Linux $releasever - Devel WARNING! FOR BUILDROOT ONLY DO NOT LEAVE ENABLED
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/devel/$basearch/os/
gpgcheck=1
enabled=0
countme=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[devel-debuginfo]
name=Rocky Linux $releasever - Devel Debug WARNING! FOR BUILDROOT ONLY DO NOT LEAVE ENABLED
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/devel/$basearch/debug/tree/
gpgcheck=1
enabled=0
countme=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

{spa.maiip8.com]
{spa.yny100.com]
{spa.yunguotong.com]
{spa.ningmengblock.com]
{spa.cshicl.com]
{spa.v6799.com]
{spa.inuantong.com]
{spa.ketzx.com]
[devel-source]
name=Rocky Linux $releasever - Devel Source WARNING! FOR BUILDROOT ONLY DO NOT LEAVE ENABLED
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/devel/source/tree/
gpgcheck=1
enabled=0
countme=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9
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rocky-extras.repo

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rocky-extras.repo

[extras]
name=Rocky Linux $releasever - Extras
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/extras/$basearch/os/
gpgcheck=1
enabled=1
countme=1
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[extras-debuginfo]
name=Rocky Linux $releasever - Extras Debug
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/extras/$basearch/debug/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[extras-source]
name=Rocky Linux $releasever - Extras Source
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/extras/source/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[plus]
name=Rocky Linux $releasever - Plus
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/plus/$basearch/os/
gpgcheck=1
enabled=0
countme=1
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[plus-debuginfo]
name=Rocky Linux $releasever - Plus - Debug
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/plus/$basearch/debug/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[plus-source]
name=Rocky Linux $releasever - Plus - Source
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/plus/source/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9
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rocky.repo

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rocky.repo

[baseos]
name=Rocky Linux $releasever - BaseOS
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/BaseOS/$basearch/os/
gpgcheck=1
enabled=1
countme=1
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[baseos-debuginfo]
name=Rocky Linux $releasever - BaseOS - Debug
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/BaseOS/$basearch/debug/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[baseos-source]
name=Rocky Linux $releasever - BaseOS - Source
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/BaseOS/source/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[appstream]
name=Rocky Linux $releasever - AppStream
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/AppStream/$basearch/os/
gpgcheck=1
enabled=1
countme=1
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[appstream-debuginfo]
name=Rocky Linux $releasever - AppStream - Debug
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/AppStream/$basearch/debug/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[appstream-source]
name=Rocky Linux $releasever - AppStream - Source
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/AppStream/source/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[crb]
name=Rocky Linux $releasever - CRB
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/CRB/$basearch/os/
gpgcheck=1
enabled=0
countme=1
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[crb-debuginfo]
name=Rocky Linux $releasever - CRB - Debug
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/CRB/$basearch/debug/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9

[crb-source]
name=Rocky Linux $releasever - CRB - Source
baseurl=https://mirrors.aliyun.com/rockylinux/$releasever/CRB/source/tree/
gpgcheck=1
enabled=0
metadata_expire=6h
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Rocky-9
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main.yml

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  • name: 关闭firewalld
    systemd: name=firewalld state=stopped enabled=no
  • name: 关闭selinux
    selinux: state=disabled
  • name: 关闭swap
    lineinfile:
    dest: /etc/fstab
    regexp: ".*swap"
    line: ""
  • name: 即时生效
    shell: setenforce 0 ; swapoff -a
  • name: 修改主机名
    shell: hostnamectl set-hostname { { hostname }}
  • name: 配置UTF8
    shell: localectl set-locale LANG=en_US.UTF-8
  • name: 配置24小时制
    shell: localectl set-locale LC_TIME=en_GB.UTF-8
  • name: 配置时区
    shell: timedatectl set-timezone Asia/Shanghai
  • name: 拷贝时区
    copy: src=/usr/share/zoneinfo/Asia/Shanghai dest=/etc/localtime
  • name: 配置hosts主机解析
    copy: src=hosts dest=/etc/ mode=0644 force=yes
  • name: 配置阿里源-base-and-epel
    copy: src={ { item }} dest=/etc/yum.repos.d/ mode=0644 force=yes
    with_items:
    {spa.life-log-happy.com]
    {spa.nyanhanten.com]
    {spa.cncowboy.com]
    {spa.dbtd1688.com]
    {spa.votesmart2017.com]
    {spa.brookschandler.com]
    {spa.guzhiyush.top]
    {spa.daguan33.com]
    {spa.wuten888.com]
    • rocky.repo
    • rocky-addons.repo
    • rocky-devel.repo
    • rocky-extras.repo
    • epel.repo
  • name: 安装常用工具包rpm
    dnf: name={ { item }} state=present disable_gpg_check=yes
    loop:
    • vim
    • bridge-utils
    • iftop
    • tree
    • net-tools
    • telnet
    • ipvsadm
    • ansible
    • bash-complete
    • lrzsz
    • wget
    • curl
    • iotop
    • tcpdump
    • lsof
    • zip
    • unzip
    • gcc
    • make
    • chrony
  • name: 配置时间同步chrony
    lineinfile:
    dest: /etc/chrony.conf
    regexp: '2.rocky.pool.ntp.org'
    line: 'ntp1.aliyun.com'
  • name: 重启时间同步chrony
    systemd: name=chronyd state=restarted enabled=yes
  • name: 配置内核加载 ipvs br_netfilter
    copy: src=ipvs_br_netfilter.conf /etc/modules-load.d/ mode=0644 force=yes
  • name: 配置文件句柄
    copy: src=limits.conf dest=/etc/security/ mode=0644 force=yes
  • name: 配置k8s内核参数
    copy: src=k8s.conf dest=/etc/sysctl.d/ mode=0644 force=yes
    复制代码

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分类: 13 自动化

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Kubernetes简介 在深入Prometheus与Kubernetes的集成之前,首先简要回顾一下Kubernetes的核心概念。Kubernetes是一个开源的容器编排平台,用于自动化容器的部署、扩展和管理。它提供了高度的可扩展性和灵活性,使得它成为微服务和云原生应用的理想选择。 核心组件 • 控制平面(Control Plane):集群管理相关的组件,如API服务器、调度器等。 • 工作节点(Nodes):运行应用容器的机器。 • Pods:Kubernetes的基本运行单位,可以容纳一个或多个容器。