http://ask.apelearn.com/question/8020
脚本如下：==============================================================================================
#!/usr/bin/env python
##coding:utf-8
#written by xeonzhang
#Description: 自动部署tomcat程序，当启动成功nginx自动切换配置转发端口
#Create_time:20150519
import os
import subprocess
import re
import sys
import time
import datetime
import paramiko
import pexpect
import math
import urllib2
def fail_to_delete(mount_path):
#通过nginx配置文件判断目前哪一个tomcat在运行
is_tomcat8080_start = 'cat /usr/share/nginx/conf/nginx.conf | grep tomcat6_4_8080.conf | wc -l'
is_tomcat8080_count = int(subprocess.check_output(is_tomcat8080_start,shell=True).strip())
if is_tomcat8080_count == 1:
#为1则将tomcat6_4_8082所在的服务停止
stop_tomcat8082 = '/usr/share/tomcat6_4_8082/start.sh stop'
os.system(stop_tomcat8082)
print "已关闭启动失败的tomcat进程"
#删除tomcat6_4_8082所有传进去的代码
rm_tomcat8082_code = 'rm -rf /usr/share/tomcat6_4_8082/lubanwebapps/*'
os.system(rm_tomcat8082_code)
print "已删除启动失败的程序代码!"
#传False值给外部程序
echo_status_command = "echo ' ' >%s/tomcat_log/False" %mount_path
os.system(echo_status_command)
else:
#不为1则将tomcat6_4_8080所在的服务停止
stop_tomcat8080 = '/usr/share/tomcat6_4_8080/start.sh stop'
os.system(stop_tomcat8080)
print "已关闭启动失败的tomcat进程"
#删除tomcat6_4_8080所有传进去的代码
rm_tomcat8080_code = 'rm -rf /usr/share/tomcat6_4_8080/lubanwebapps/*'
os.system(rm_tomcat8080_code)
print "已删除启动失败的程序代码!"
#传False值给外部程序
echo_status_command = "echo ' ' >%s/tomcat_log/False" %mount_path
os.system(echo_status_command)
def change_nginx_conf(mount_path):
#通过nginx配置文件判断目前哪一个tomcat在运行
is_tomcat8080_start = 'cat /usr/share/nginx/conf/nginx.conf | grep tomcat6_4_8080.conf | wc -l'
is_tomcat8080_count = int(subprocess.check_output(is_tomcat8080_start,shell=True).strip())
#为True则将配置文件切换成tomcat6_4_8082.conf
if is_tomcat8080_count == 1:
change_conf_command = "sed -i 's#tomcat6_4_8080.conf#tomcat6_4_8082.conf#g' /usr/share/nginx/conf/nginx.conf"
os.system(change_conf_command)
print "nginx配置已经成功切换至tomcat6_4_8082.conf!"
#reload nginx
nginx_reload_command = '/etc/init.d/nginx reload'
os.system(nginx_reload_command)
#传True值给外部程序
echo_status_command = "echo ' ' >%s/tomcat_log/True" %mount_path
os.system(echo_status_command)
#结束tomcat6_4_8080进程
stop_tomcat8080_pid = '/usr/share/tomcat6_4_8080/start.sh stop'
os.system(stop_tomcat8080_pid)
print "现tomcat启动成功，原有tomcat服务进程已停止"
#删除tomcat6_4_8080目录下的所有代码
rm_8080_code = 'rm -rf /usr/share/tomcat6_4_8080/lubanwebapps/*'
os.system(rm_8080_code)
print "现tomcat启动成功，原有tomcat代码已删除"
else:
change_conf_command = "sed -i 's#tomcat6_4_8082.conf#tomcat6_4_8080.conf#g' /usr/share/nginx/conf/nginx.conf"
os.system(change_conf_command)
print "nginx配置已经成功切换至tomcat6_4_8080.conf!"
#reload nginx
nginx_reload_command = '/etc/init.d/nginx reload'
os.system(nginx_reload_command)
#传True值给外部程序
echo_status_command = "echo ' ' >%s/tomcat_log/True" %mount_path
os.system(echo_status_command)
#结束tomcat6_4_8082进程
stop_tomcat8082_pid = '/usr/share/tomcat6_4_8082/start.sh stop'
os.system(stop_tomcat8082_pid)
print "现tomcat启动成功，原有tomcat服务进程已停止"
#删除tomcat6_4_8082目录下的所有代码
rm_8082_code = 'rm -rf /usr/share/tomcat6_4_8082/lubanwebapps/*'
os.system(rm_8082_code)
print "现tomcat启动成功，原有tomcat代码已删除"
def tomcat_check_httpcode(code_path, port):
#循环查询当前几个项目返回的httpcode值
webapps_dir_list = os.listdir(code_path)
for w in webapps_dir_list:
url = ' http://localhost:8082/%s' %(port, w.split('.')[0])
response = 'None'
try:
response = urllib2.urlopen(url,timeout=5)
if str(response.getcode())[0] != '2':
return False
response.close()
except urllib2.URLError as e:
if hasattr(e, 'code'):
print 'Error code:',e.code
return False
elif hasattr(e, 'reason'):
print 'Reason:',e.reason
return False
return True
def tomcat_check_error(mount_path):
#判断挂载目录下日志文件目录是否存在，存在则删除
test_log_exit = 'test -d %s/tomcat_log && rm -rf %s/tomcat_log' %(mount_path, mount_path)
#通过nginx配置文件判断目前哪一个tomcat在运行
is_tomcat8080_start = 'cat /usr/share/nginx/conf/nginx.conf | grep tomcat6_4_8080.conf | wc -l'
is_tomcat8080_count = int(subprocess.check_output(is_tomcat8080_start,shell=True).strip())
boolean_is_success = True
if is_tomcat8080_count == 1:
#删除tomcat8082内所有不需要的遗留物
rm_tomcatlog_in_mount = 'test -d %s/tomcat_log && rm -rf %s/tomcat_log' %(mount_path, mount_path)
rm_tomcat8082_pre_code = 'rm -rf /usr/share/tomcat6_4_8082/lubanwebapps/*'
rm_tomcat8082_pre_logs = 'rm -rf /usr/share/tomcat6_4_8082/logs/*'
os.system(rm_tomcat8082_pre_code)
os.system(rm_tomcat8082_pre_logs)
os.system(rm_tomcatlog_in_mount)
#将外面挂载目录的数据拷贝到8082端口容器的webapps目下
cp_to8082_command = 'cp -a %s/* /usr/share/tomcat6_4_8082/lubanwebapps/' %mount_path
print "开始拷贝编译包到tomcat_8082目录..."
os.system(cp_to8082_command)
#清理tomcat8082 日志目录
print "拷贝数据完成！"
print "+----------------------------------------------------------+"
print "***************开始启动tomcat_8082程序 *******************"
print "+----------------------------------------------------------+"
start_tomcat8082 = '/usr/share/tomcat6_4_8082/start.sh start'
os.system(start_tomcat8082)
#软链接日志文件到挂载目录里面
ln_command = 'ln -s /home/www/data/log/tomcat6_4_8082 %s/tomcat_log' %mount_path
os.system(ln_command)
#循环100次
for i in range(1,100):
##根据tomcat日志判断启动是否成功
list_error_keywords = ['Exception','SEVERE','ERROR','严重','错误']
list_success_keywords = []
#当有一个或多个错误关键字时候判断tomcat启动失败
for e in list_error_keywords:
is_error_command = 'cat /home/www/data/log/tomcat6_4_8082/catalina.out | grep %s | wc -l ' %e
is_error_count = int(subprocess.check_output(is_error_command,shell=True).strip())
if is_error_count != 0:
print "tomcat8082启动失败！"
#停止tomcat8082的启动，并删除目录内的文件
boolean_is_success = False
return False
#判断当返回httpcode值都是2开头的状态码时，返回True
if tomcat_check_httpcode('/usr/share/tomcat6_4_8082/lubanwebapps','8082'):
return True
#休眠5秒
time.sleep(5)
#当参数为True的时候，判断tomcat启动成功
if boolean_is_success == True:
return True
else:
#删除tomcat8080内所有不需要的遗留物
rm_tomcat8080_pre_code = 'rm -rf /usr/share/tomcat6_4_8080/lubanwebapps/*'
rm_tomcat8080_pre_logs = 'rm -rf /usr/share/tomcat6_4_8080/logs/*'
rm_tomcatlog_in_mount = 'test -d %s/tomcat_log && rm -rf %s/tomcat_log' %(mount_path, mount_path)
os.system(rm_tomcat8080_pre_code)
os.system(rm_tomcat8080_pre_logs)
os.system(rm_tomcatlog_in_mount)
#将外面挂载目录的数据拷贝到8080端口容器的webapps目下
cp_to8080_command = 'cp -a %s/* /usr/share/tomcat6_4_8080/lubanwebapps/' %mount_path
print "开始拷贝编译包到tomcat_8080目录..."
os.system(cp_to8080_command)
print "拷贝数据完成！"
print "+----------------------------------------------------------+"
print "***************开始启动tomcat_8080程序 *******************"
print "+----------------------------------------------------------+"
start_tomcat8080 = '/usr/share/tomcat6_4_8080/start.sh start'
os.system(start_tomcat8080)
#软链接日志文件到挂载目录里面
ln_command = 'ln -s /home/www/data/log/tomcat6_4_8080 %s/tomcat_log' %mount_path
for i in range(1,100):
##根据tomcat日志判断启动是否成功
list_error_keywords = ['Exception','SEVERE','ERROR','严重','错误']
list_success_keywords = []
#当有一个或多个错误关键字时候判断tomcat启动失败
for e in list_error_keywords:
is_error_command = 'cat /home/www/data/log/tomcat6_4_8080/catalina.out | grep %s | wc -l ' %e
is_error_count = int(subprocess.check_output(is_error_command,shell=True).strip())
if is_error_count != 0:
print "tomcat8080启动失败！"
#停止tomcat8080的启动，并删除目录内的文件
boolean_is_success = False
return False
#判断当返回httpcode值都是2开头的状态码时，返回True
if tomcat_check_httpcode('/usr/share/tomcat6_4_8080/lubanwebapps','8080'):
return True
#休眠5秒
time.sleep(5)
#当参数为True的时候，判断tomcat启动成功
if boolean_is_success == True:
return True
#主程序入口
if __name__ == "__main__" :
#argv
mount_path = '/usr/share/codes'
#判断tomcat是否启动成功
if tomcat_check_error(mount_path):
#成功则切换nginx配置,并且返回一个文件告知是否成功
change_nginx_conf(mount_path)
else:
#不成功则删除该失败tomcat内的所有程序，并且返回一个文件告知启动失败
fail_to_delete(mount_path)
==================================================================================
功能需求：在一台服务器或者docker容器内 安装了2个tomcat+1个nginx
nginx:用于转发
tomcat：一个正常启动运行，当有新的代码提交时候，自动将代码存入另一个非启动tomcat内，并且启动。
判断：当新tomcat启动成功，则停掉原来的tomcat，并且修改nginx转发端口
当新tomcat启动不成功，则删除新tomcat内代码。返回启动不成功信息。
心得：需求不复杂，只是细节考虑的要全面，什么时候要删除什么，逻辑需要清晰。另外就是要不停的测试脚本有没有BUG存在！
用到了urllib2库，还判断http get的code值是不是200.这是新运用到的库。
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