#!/bin/bash

NGINX_FILE=nginx-1.22.0
#NGINX_FILE=nginx-1.20.2
#NGINX_FILE=nginx-1.18.0
NGINX_URL=http://nginx.org/download/
TAR=.tar.gz
SRC_DIR=/usr/local/src
NGINX_INSTALL_DIR=/apps/nginx
CPUS=`lscpu |awk '/^CPU\(s\)/{print $2}'`
. /etc/os-release

color () {
RES_COL=60
MOVE_TO_COL="echo -en \\033[${RES_COL}G"
SETCOLOR_SUCCESS="echo -en \\033[1;32m"
SETCOLOR_FAILURE="echo -en \\033[1;31m"
SETCOLOR_WARNING="echo -en \\033[1;33m"
SETCOLOR_NORMAL="echo -en \E[0m"
echo -n "$1" && $MOVE_TO_COL
echo -n "["
if [ $2 = "success" -o $2 = "0" ] ;then
${SETCOLOR_SUCCESS}
echo -n $" OK "
elif [ $2 = "failure" -o $2 = "1" ] ;then
${SETCOLOR_FAILURE}
echo -n $"FAILED"
else
${SETCOLOR_WARNING}
echo -n $"WARNING"
fi
${SETCOLOR_NORMAL}
echo -n "]"
echo
}

check () {
[ -e ${NGINX_INSTALL_DIR} ] && { color "nginx 已安装,请卸载后再安装" 1; exit; }
cd ${SRC_DIR}
if [ -e ${NGINX_FILE}${TAR} ];then
color "相关文件已准备好" 0
else
color '开始下载 nginx 源码包' 0
wget ${NGINX_URL}${NGINX_FILE}${TAR}
[ $? -ne 0 ] && { color "下载 ${NGINX_FILE}${TAR}文件失败" 1; exit; }
fi
}

install () {
color "开始安装 nginx" 0
if id nginx &> /dev/null;then
color "nginx 用户已存在" 1
else
useradd -s /sbin/nologin -r nginx
color "创建 nginx 用户" 0
fi
color "开始安装 nginx 依赖包" 0
if [ $ID == "centos" ] ;then
if [[ $VERSION_ID =~ ^7 ]];then
yum -y install gcc make pcre-devel openssl-devel zlib-devel perl-ExtUtils-Embed
elif [[ $VERSION_ID =~ ^8 ]];then
yum -y install make gcc-c++ libtool pcre pcre-devel zlib zlib-devel openssl openssl-devel perl-ExtUtils-Embed
else
color '不支持此系统!' 1
exit
fi
elif [ $ID == "rocky" ];then
yum -y install gcc make gcc-c++ libtool pcre pcre-devel zlib zlib-devel openssl openssl-devel perl-ExtUtils-Embed
else
apt update
apt -y install gcc make libpcre3 libpcre3-dev openssl libssl-dev zlib1g-dev
fi
cd $SRC_DIR
tar xf ${NGINX_FILE}${TAR}
NGINX_DIR=`echo ${NGINX_FILE}${TAR}| sed -nr 's/^(.*[0-9]).*/\1/p'`
cd ${NGINX_DIR}
./configure --prefix=${NGINX_INSTALL_DIR} --user=nginx --group=nginx --with-http_ssl_module --with-http_v2_module --with-http_realip_module --with-http_stub_status_module --with-http_gzip_static_module --with-pcre --with-stream --with-stream_ssl_module --with-stream_realip_module
make -j $CPUS && make install
[ $? -eq 0 ] && color "nginx 编译安装成功" 0 || { color "nginx 编译安装失败,退出!" 1 ;exit; }
chown -R nginx.nginx ${NGINX_INSTALL_DIR}
echo "PATH=${NGINX_INSTALL_DIR}/sbin:${PATH}" > /etc/profile.d/nginx.sh
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=${NGINX_INSTALL_DIR}/logs/nginx.pid
ExecStartPre=/bin/rm -f ${NGINX_INSTALL_DIR}/logs/nginx.pid
ExecStartPre=${NGINX_INSTALL_DIR}/sbin/nginx -t
ExecStart=${NGINX_INSTALL_DIR}/sbin/nginx
ExecReload=/bin/kill -s HUP \$MAINPID
KillSignal=SIGQUIT
TimeoutStopSec=5
KillMode=process
PrivateTmp=true
LimitNOFILE=100000

[Install]
WantedBy=multi-user.target
EOF
systemctl daemon-reload
systemctl enable --now nginx &> /dev/null
systemctl is-active nginx &> /dev/null || { color "nginx 启动失败,退出!" 1 ; exit; }
color "nginx 安装完成" 0
}

check
install