!/bin/bash

PATH=/bin:/sbin:/usr/bin:/usr/sbin:/opt/bin:/opt/sbin:~/bin
export PATH

Check if user is root

if [ $(id -u) != "0" ]; then

echo "Error: You must be root to run this script, please use root to install"
exit 1

fi

Check the network status

NET_NUM=ping -c 4 www.baidu.com |awk '/packet loss/{print $6}' |sed -e 's/%//'
if [ -z "$NET_NUM" ] || [ $NET_NUM -ne 0 ];then

echo "Please check your internet"
exit 1

fi

Check the OS

if [ "$(awk '{if ( $3 >= 7.0 ) print "CentOS 7.x"}' /etc/redhat-release 2>/dev/null)" != "CentOS 7.x" ];then

err_echo "This script is used for RHEL/CentOS 7.x only."
exit 1

fi

function InitInstall()
{

Set timezone

rm -rf /etc/localtime
ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

yum install -y ntpdate
ntpdate -u pool.ntp.org
date -R

rpm -qa|grep httpd
rpm -e httpd
yum -y remove httpd
yum -y install yum-fastestmirror
yum -y install gcc gcc-c++ make pcre-devel GeoIP* openssl-devel perl-devel perl-ExtUtils-Embed

if [ -s /data/www/vhosts ];then
    echo "The web directory already exists!"
else
    mkdir -p /data/www/vhosts
fi

}

function CheckAndDownloadFiles()
{
echo "============================check files=================================="
if [ -s nginx-1.10.2.tar.gz ];then

echo "nginx-1.10.2.tar.gz [found]"

else

wget -c http://download.slogra.com/nginx/nginx-1.10.2.tar.gz

fi
echo "============================check files=================================="
}

function InstallNginx()
{
echo "============================Install Nginx 1.10.2=================================="
user_nginx=cat /etc/passwd|grep nginx|awk -F : '{print $1}'
if [ -z "$user_nginx" ];then

groupadd nginx
useradd -s /sbin/nologin -M -g nginx nginx

else

echo "user nginx already exists!"

fi

tar zxf nginx-1.10.2.tar.gz && cd nginx-1.10.2
export CFLAGS="-Werror"
./configure --user=nginx --group=nginx --prefix=/usr/share/nginx \
--sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf \
--error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log \
--http-client-body-temp-path=/var/lib/nginx/tmp/client_body --http-proxy-temp-path=/var/lib/nginx/tmp/proxy \
--http-fastcgi-temp-path=/var/lib/nginx/tmp/fastcgi --pid-path=/var/run/nginx.pid --lock-path=/var/lock/subsys/nginx \
--with-http_secure_link_module --with-http_random_index_module --with-http_ssl_module --with-http_realip_module \
--with-http_addition_module --with-http_sub_module --with-http_dav_module --with-http_flv_module \
--with-http_gzip_static_module --with-http_stub_status_module --with-http_perl_module \
--with-http_geoip_module --with-mail --with-mail_ssl_module \
--with-cc-opt='-O3' --with-cpu-opt=pentium

make && make install

cat >/lib/systemd/system/nginx.service<<EOF
[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=/usr/sbin/nginx -t
ExecStart=/usr/sbin/nginx
ExecReload=/bin/kill -s HUP $MAINPID
KillSignal=SIGQUIT
TimeoutStopSec=5
KillMode=process
PrivateTmp=true

[Install]
WantedBy=multi-user.target
EOF

cat >/etc/nginx/nginx.conf<<EOF
user nginx nginx;
worker_processes 8;
worker_rlimit_nofile 65535;

error_log /var/log/nginx/error.log;

pid /var/run/nginx.pid;

events {

use epoll;
worker_connections  65535;

}

http {

include       mime.types;
default_type  application/octet-stream;

log_format main '$remote_addr - $remote_user [$time_local] "$request" '

'$status $body_bytes_sent $request_time "$http_referer" '

'"$http_user_agent" "$http_x_forwarded_for"';

log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                  '$status $body_bytes_sent "$http_referer" '
                  '"$http_user_agent" "$http_x_forwarded_for" "$request_time"';

access_log  /var/log/nginx/access.log  main;

server_names_hash_bucket_size 128;
client_header_buffer_size 16k;
large_client_header_buffers 4 32k;
client_body_in_file_only clean;
client_max_body_size 20m;

open_file_cache max=10240 inactive=20s;

open_file_cache_valid 30s;

open_file_cache_min_uses 1;

sendfile        on;
tcp_nopush      on;

keepalive_timeout  60;
tcp_nodelay on;
server_tokens   off;

fastcgi_connect_timeout 300s;
fastcgi_send_timeout 300s;
fastcgi_read_timeout 300s;
fastcgi_buffer_size 128k;
fastcgi_buffers 8 128k;

8 128

fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;
fastcgi_intercept_errors on;

hiden php version

fastcgi_hide_header X-Powered-By;

gzip on;
gzip_min_length 1k;
gzip_buffers 16 64k;
gzip_http_version 1.0;

gzip_disable "MSIE [1-5].";

gzip_comp_level 4;
gzip_types text/plain application/x-javascript text/css application/xml image/gif image/jpg image/jpeg image/png;
gzip_vary on;

proxy_hide_header Vary;

limit_zone conlimit $binary_remote_addr 1m;

limit_conn conlimit 5;

server {
listen  80 default;
    server_name  _;
    return 500;
}

    include /etc/nginx/conf.d/*.conf;
}

EOF

systemctl enable nginx
systemctl start nginx
echo "============================Nginx 1.10.2 install completed========================="
}

function CheckInstall()
{
echo "===================================== Check install ==================================="
clear
isnginx=""
echo "Checking..."
if [ -s /usr/local/nginx ] && [ -s /etc/nginx/nginx.conf ];then

  echo "Nginx: OK"
  isnginx="ok"

else

  echo "Error: /usr/local/nginx not found!!!Nginx install failed."

fi

if [ "$isnginx" = "ok" ];then

echo "Install Nginx 1.10.2 completed! enjoy it."
echo "========================================================================="
netstat -ntl

else

echo "Sorry,Failed to install nginx!"
echo "You can tail /root/nginx-install.log from your server."

fi
}

The installation log

InitInstall 2>&1 | tee /root/nginx-install.log
CheckAndDownloadFiles 2>&1 | tee -a /root/nginx-install.log
InstallNginx 2>&1 | tee -a /root/nginx-install.log
CheckInstall 2>&1 | tee -a /root/nginx-install.log