shell脚本之nginx安装

#!/usr/bin/python
#encoding:utf-8
#version:1.1
 
import sys,os,commands;
 
 
def exec_test(cmd):
    stat,output = commands.getstatusoutput(cmd);
    if stat == 0:
        return True;
    else:
        file = open('nginx_install_error.log','a');
        file.write('%s \n' %output); 
        file.close();
        return False;
        
#预安装环境升级
def install_gcc_make():
    print '\033[32mstart install and upgrade environment...\033[0m';
    cmd = 'yum -y install gcc automake autoconf libtool make gcc-c++ pcre* zlib* openssl openssl-devel';
    if exec_test(cmd):
        pass;
    else:
        print '\033[31minstall environment failed....\033[0m';        
        sys.exit();
        
def adduser():
    add_cmd = 'useradd -s /sbin/nologin nginx';
    if exec_test(add_cmd):
        pass;
    else:
        print '\033[31madd user nginx failed...\033[0m';
        sys.exit();
        
#下载nginx并安装
def download_nginx():
    download_url = 'http://nginx.org/download/nginx-1.4.2.tar.gz';
    download_cmd = 'wget %s' %(download_url);
    if exec_test(download_cmd):
        pass;
    else:
        print '\033[31mdownload nginx install packet  failed...\033[0m';
        sys.exit();
 
def install_nginx():
    tar_cmd = 'tar -zxf nginx-1.4.2.tar.gz';
    if exec_test(tar_cmd):
        #chroot_cmd = 'cd nginx-1.4.2 && ';
        os.chdir('./nginx-1.4.2');
        config_cmd = './configure --user=nginx --group=nginx \
        --with-http_stub_status_module \
        --with-http_ssl_module \
        --with-http_gzip_static_module \
        --with-http_flv_module';
        #install_cmd = chroot_cmd + config_cmd;
        if exec_test(config_cmd):
            os.system('make && make install');
            #更改nginx目录的拥护者
            os.system('chown -R nginx:nginx /usr/local/nginx');
            os.system('cp -p /usr/local/nginx/sbin/nginx /usr/sbin/nginx');
            os.system('ln -s /usr/local/nginx/conf/nginx.conf /etc/');
        else:
            print '\033[31mconfigure nginx failed..\033[0m';
            sys.exit();
    else:
        print '\033[31m tar -zxf nginx-1.4.2.tar.gz failed...\033[0m';
        sys.exit();
        
#添加nginx服务到系统并开机启动
def nginx_service():
    download_cmd = 'wget -c ftp.sosolinux.com/nginx/nginx.sh';
    if exec_test(download_cmd):
        os.system('chmod u+x nginx.sh');
        os.system('cp -p ./nginx.sh /etc/init.d/nginx');
        #添加到开机启动
        os.system('chkconfig --level 35 nginx on');
        os.system('/etc/init.d/nginx restart');
    else:
        os.system('rm -rf nginx.sh');
        print '\033[31mdownload nginx.sh failed... \033[0m';
        os.exit();
            
def install():
    install_gcc_make();
    adduser();
    download_nginx();
    install_nginx();
    nginx_service();
    
install();