python docker registry 历史镜像批量删除

9AMC

　　思路

• 主要思路就是先拿到数据，通过执行docker images 写入到一个文件中
  
• 从文件中拿出数据，进行排序【这部分需要根据自己的需求来自定义编写，可以留言交流】
  
• 删除需要删除的镜像。
  

　　脚本内容

#coding:utf-8
def get_date_time(date_list,date_range,version_date_range):
'''
获取列表中最大的时间
date_list: 时间列表,[20181109-11,20181110-1,20181110-2,20181111-4,20181111-5]
date_range: 每个项目保留的天数,如上保留两天,[20181109-11,20181110-1,20181110-2]
version_date_range: 每个项目保留的天数，其中每天保留几个版本,如上保留两天每天保留一个版本:[20181109-11,20181110-1]
'''
new_num_dict = {}
for i in date_list:
try:
date_time = int(i.split('-')[0])
version_num = int(i.split('-')[1])
if date_time not in new_num_dict.keys():
new_num_dict[date_time] = [version_num]
else:
new_num_dict[date_time].append(version_num)
except Exception:
pass
new_date_time_list = []
for i in new_num_dict.keys():
new_date_time_list.append(i)
new_date_time_list=sorted(new_date_time_list,reverse=True)
if len(new_date_time_list) > date_range:
keep_date_time_list = new_date_time_list[0:date_range]
delete_date_time_list = new_date_time_list[-(len(new_date_time_list)-date_range):]
else:
keep_date_time_list = new_date_time_list
delete_date_time_list = []
#print "天数保留的结果: %s" % keep_date_time_list
#print "天数删除的结果: %s" % delete_date_time_list
keep_version_num_list = []
delete_version_num_list = []
result = {}
for i in keep_date_time_list:
# 降序
sort_version_num_list = sorted(new_num_dict,reverse=True)
print (i,sort_version_num_list)
if len(sort_version_num_list) > version_date_range:
for n in range(version_date_range):
keep_version_num_list.append("{}-{}".format(i,sort_version_num_list[n]))
for n in range(1,(len(sort_version_num_list)-version_date_range)):
delete_version_num_list.append("{}-{}".format(i, sort_version_num_list[-n]))
else:
for n in range(len(sort_version_num_list)):
keep_version_num_list.append("{}-{}".format(i,sort_version_num_list[n]))
for i in delete_date_time_list:
sort_version_num_list = sorted(new_num_dict, reverse=True)
for n in sort_version_num_list:
delete_version_num_list.append("{}-{}".format(i,n))
result['keep'] = keep_version_num_list
result['delete'] = delete_version_num_list
#print '保留:',keep_version_num_list
#print '删除:',delete_version_num_list
return result
def get_docker_images_info(filename,date_range,version_date_range):
'''
filename: 通过在registry服务器上执行会生成一个文本文件
date_range: 每个项目保留的天数,如上保留两天,[20181109-11,20181110-1,20181110-2]
version_date_range: 每个项目保留的天数，其中每天保留几个版本,如上保留两天每天保留一个版本:[20181109-11,20181110-1]
'''
readlines_list=[]
with open(filename,'rb+') as f:
data = f.readlines()
for line in data:
if line:
readlines_list.append(line)
f.close()
readlines_dict={}
for i in readlines_list:
readline_list = i.split()
#print (readline_list)
if readline_list[0] not in readlines_dict.keys():
readlines_dict[readline_list[0]] = [readline_list[1]]
else:
readlines_dict[readline_list[0]].append(readline_list[1])
result = {}
for k,v in readlines_dict.items():
# print "%s------------%s" % (k,v)
delete_date_list = get_date_time(v,date_range,version_date_range)
result[k] = delete_date_list
return result
if __name__ == "__main__":
import os
import datetime
home_path = '.'
#生成的文件
os.system("docker images > 1.txt")
ret=get_docker_images_info("1.txt",5,2)
#生成一个日志记录
with open("%s/logs/delete.%s.log" % (home_path,datetime.datetime.now().strftime('%Y-%m-%d')),'w+') as f:
for k,v in ret.items():
if len(v['delete']) > 0:
f.write("[%s] [%s] docker delete images:%s\n" % ((datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')),k,v['delete']))
for i in v['delete']:
delete_docker_image_tag = ("{}:{}".format(k,i))
print ('删除: %s' % delete_docker_image_tag)
os.system("docker rmi %s " % delete_docker_image_tag)
if len(v['keep']) > 0:
f.write('[%s] [%s] docker keep images: %s\n' % ((datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')), k, v['keep']))
for i in v['keep']:
keep_docker_image_tag = ("{}:{}".format(k,i))
print ('保留: %s ' % keep_docker_image_tag)
f.close()