nginx is deployed by source code compilation through ansible-playbook.

• All deployed nginx hosts are divided into webserver groups:

# vim /etc/ansible/hosts
[webserver]
192.168.30.128
192.168.30.129
192.168.30.130

• Create a management directory:

#  mkdir -p nginx/roles/nginx_install/{files,handlers,meta,tasks,templates,vars}

# cd nginx/

Explain:

Files: Store source files and configuration files that need to be synchronized to remote servers. 
handlers: Operations needed when resources change. If there is no directory, it can be built or empty. 
meta: Store description information, role dependency and other information, can be left blank; 
tasks: The nginx installation process becomes the task that needs to be executed; 
templates: Template files used to execute nginx installation, usually scripts; 
vars: Variables defined for this installation

# tree .
.
├── nginx.yml
└── roles
    └── nginx_install
        ├── files
        │   └── nginx-1.15.0.tar.gz             #Download the nginx package in advance and put it under files
        ├── handlers
        ├── meta
        ├── tasks
        │   ├── copy.yml
        │   ├── install.yml
        │   ├── main.yml
        │   └── prepare.yml
        ├── templates
        │   ├── fastcgi_params
        │   ├── nginx.conf
        │   ├── nginx.service
        │   └── server.conf
        └── vars
            └── main.yml

8 directories, 11 files

• Create the nginx entry file to call nginx_install:

# vim nginx.yml 

#For batch installation of Nginx
- hosts: webserver
  remote_user: root
  gather_facts: True

  roles:
    - nginx_install

• Create variables:

# vim roles/nginx_install/vars/main.yml

#Define variables in nginx installation
NGINX_VER: 1.15.0
DOWNLOAD_URL: http://nginx.org/download/nginx-{{ NGINX_VER }}.tar.gz
NGINX_USER: nginx
NGINX_PORT: 80
SOURCE_DIR: /software
NGINX_DIR: /usr/local/nginx
DATA_DIR: /data/nginx

• Create template files:

Nginx main configuration file nginx.conf

# vim roles/nginx_install/templates/nginx.conf

user nobody nobody;	
worker_processes  1;
error_log {{ DATA_DIR }}/log/error.log crit;
pid /run/nginx.pid;
worker_rlimit_nofile 51200;

events {
	use epoll;
    worker_connections  1024;
}

http {
    include       mime.types;
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  {{ DATA_DIR }}/log/access.log  main;

    server_tokens       off;
    sendfile        	on;
    send_timeout        3m;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 2048;

    client_header_timeout 3m;
    client_body_timeout 3m;
    connection_pool_size 256;
    client_header_buffer_size 1k;
    large_client_header_buffers 8 4k;
    request_pool_size 4k;
    output_buffers 4 32k;
    postpone_output 1460;
    client_max_body_size 10m;
    client_body_buffer_size 256k;
    client_body_temp_path {{ NGINX_DIR }}/client_body_temp;
    proxy_temp_path {{ NGINX_DIR }}/proxy_temp;
    fastcgi_temp_path {{ NGINX_DIR }}/fastcgi_temp;
    fastcgi_intercept_errors on;    

    gzip on;
    gzip_min_length 1k;
    gzip_buffers 4 8k;
    gzip_comp_level 5;
    gzip_http_version 1.1;
    gzip_types text/plain application/x-javascript text/css text/htm 
    application/xml;

    default_type  application/octet-stream;
    include  {{ NGINX_DIR }}/conf/vhost/*.conf;
}

nginx vhost configuration file server.conf

# vim roles/nginx_install/templates/server.conf

server {
	listen       80;
	server_name  localhost;
	location / {
		root   {{ NGINX_DIR }}/html;
		index  index.php index.html index.htm;
	}
	
	error_page   500 502 503 504  /50x.html;
        location = /50x.html {
        	root   html;
        }	

	location ~ \.php$ {
	root   {{ NGINX_DIR }}/html;
	fastcgi_pass   127.0.0.1:9000;
	fastcgi_index  index.php;
	fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
	include        fastcgi_params;
	}
}

nginx additional configuration file fastcgi_params

# vim roles/nginx_install/templates/fastcgi_params

fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
fastcgi_param  SERVER_SOFTWARE    nginx;
fastcgi_param  QUERY_STRING       $query_string;
fastcgi_param  REQUEST_METHOD     $request_method;
fastcgi_param  CONTENT_TYPE       $content_type;
fastcgi_param  CONTENT_LENGTH     $content_length;
fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
fastcgi_param  REQUEST_URI        $request_uri;
fastcgi_param  DOCUMENT_URI       $document_uri;
fastcgi_param  DOCUMENT_ROOT      $document_root;
fastcgi_param  SERVER_PROTOCOL    $server_protocol;
fastcgi_param  REMOTE_ADDR        $remote_addr;
fastcgi_param  REMOTE_PORT        $remote_port;
fastcgi_param  SERVER_ADDR        $server_addr;
fastcgi_param  SERVER_PORT        $server_port;
fastcgi_param  SERVER_NAME        $server_name;

Nginx service file nginx.service

# vim roles/nginx_install/templates/nginx.service

[Unit]
Description=The nginx HTTP and reverse proxy server
After=network.target remote-fs.target nss-lookup.target

[Service]
Type=forking
PIDFile=/run/nginx.pid
# Nginx will fail to start if /run/nginx.pid already exists but has the wrong
# SELinux context. This might happen when running `nginx -t` from the cmdline.
# https://bugzilla.redhat.com/show_bug.cgi?id=1268621
ExecStartPre=/usr/bin/rm -f /run/nginx.pid
ExecStartPre={{ NGINX_DIR }}/sbin/nginx -t
ExecStart={{ NGINX_DIR }}/sbin/nginx
ExecReload=/bin/kill -s HUP $MAINPID
KillSignal=SIGQUIT
TimeoutStopSec=5
KillMode=process
PrivateTmp=true

[Install]
WantedBy=multi-user.target

• Environment preparation.yml:

# vim roles/nginx_install/tasks/prepare.yml

- name: Close firewalld
  service: name=firewalld state=stopped enabled=no

- name: Temporarily Closed selinux
  shell: "setenforce 0"
  failed_when: false

- name: Permanent closure selinux
  lineinfile:
    dest: /etc/selinux/config
    regexp: "^SELINUX="
    line: "SELINUX=disabled"

- name: Add to EPEL Warehouse
  yum: name=epel-release state=latest

- name: Installing Common Software Packages
  yum:
    name:
      - vim
      - lrzsz
      - net-tools
      - wget
      - curl
      - bash-completion
      - rsync
      - gcc
      - gcc-c++
      - unzip
      - git
      - autoconf
      - cmake
      - openssl
      - openssl-devel
      - pcre 
      - pcre-devel 
      - zlib
      - zlib-devel
      - gd-devel
      - libxml2-devel
    state: latest

- name: Update System
  shell: "yum update -y"
  args:
    warn: False

• copy.yml:

# vim roles/nginx_install/tasks/copy.yml

- name: Establish nginx user group
  group: name={{ NGINX_USER }}  state=present

- name: Establish nginx user
  user: name={{ NGINX_USER }}  group={{ NGINX_USER }}  state=present create_home=False shell=/sbin/nologin

- name: Establish software Catalog
  file: name={{ SOURCE_DIR }} state=directory mode=0755 recurse=yes
  
- name: Create a log directory
  file: name={{ item }} state=directory owner={{ NGINX_USER }} group={{ NGINX_USER }} mode=0755 recurse=yes
  with_items:
  - "{{ DATA_DIR }}"
  - "{{ DATA_DIR }}/log"
  
- name: Create log files
  file: name={{ item }} state=touch owner={{ NGINX_USER }} group={{ NGINX_USER }} mode=0644
  with_items:
  - "{{ DATA_DIR }}/log/access.log"
  - "{{ DATA_DIR }}/log/error.log"

#There is no nginx package on the current host
- name: download nginx package
  get_url: url={{ DOWNLOAD_URL }} dest={{ SOURCE_DIR }} owner={{ NGINX_USER }} group={{ NGINX_USER }}

#Existing nginx packages in the current host file directory
#- name: Copy existing nginx packages to all hosts
#  copy: src=nginx-{{ NGINX_VER }}.tar.gz dest={{ SOURCE_DIR }} owner={{ NGINX_USER }} group={{ NGINX_USER }}

- name: decompression nginx package
  unarchive: src={{ SOURCE_DIR }}/nginx-{{ NGINX_VER }}.tar.gz dest={{ SOURCE_DIR }} owner={{ NGINX_USER }} group={{ NGINX_USER }}

#Copy nginx service files
- name: Copy nginx Service Document
  template: src=nginx.service dest=/usr/lib/systemd/system/nginx.service owner=root group=root

• Compile and install install.yml:

# vim roles/nginx_install/tasks/install.yml

#Compile nginx
- name: Compile nginx
  shell: "cd {{ SOURCE_DIR }}/nginx-{{ NGINX_VER }} && ./configure --prefix={{ NGINX_DIR }} --user={{ NGINX_USER }} --group={{ NGINX_USER }} --http-log-path={{ DATA_DIR }}/log/access.log --error-log-path={{ DATA_DIR }}/log/error.log --with-http_ssl_module --with-http_v2_module --with-http_realip_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_stub_status_module"
  
#Install nginx
- name: install nginx
  shell: "cd {{ SOURCE_DIR }}/nginx-{{ NGINX_VER }} && make && make install"
  
#Copy the nginx master configuration file
- name: Copy nginx Master Profile
  template: src=nginx.conf dest={{ NGINX_DIR }}/conf/nginx.conf owner={{ NGINX_USER }} group={{ NGINX_USER }}

- name: Establish vhost Configuration file directory
  file: name={{ NGINX_DIR }}/conf/vhost state=directory owner={{ NGINX_USER }} group={{ NGINX_USER }} mode=0755 recurse=yes

#Copy nginx vhost configuration file
- name: Copy nginx vhost configuration file
  template: src=server.conf dest={{ NGINX_DIR }}/conf/vhost/server.conf owner={{ NGINX_USER }} group={{ NGINX_USER }} mode=0644
  
#Copy additional nginx configuration files
- name: Copy nginx Additional configuration files
  template: src=fastcgi_params dest={{ NGINX_DIR }}/conf/fastcgi_params owner={{ NGINX_USER }} group={{ NGINX_USER }} mode=0644

- name: Configuring environment variables
  shell: " if [ `grep {{ NGINX_DIR }}/sbin /etc/profile |wc -l` -eq 0 ]; then echo export PATH=$PATH:{{ NGINX_DIR }}/sbin >> /etc/profile && source /etc/profile; else source /etc/profile; fi"

- name: start-up nginx Start-up and start-up
  shell: "systemctl daemon-reload && systemctl enable nginx && systemctl start nginx"

• Reference file main.yml:

# vim roles/nginx_install/tasks/main.yml

#Reference to prepare, copy, install modules
- include: prepare.yml
- include: copy.yml
- include: install.yml

• Perform installation:

# ansible-playbook nginx.yml

# netstat -lntp |grep 80
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      48931/nginx: master