ansible调用callbacks插件实现结果nosql输出回调
前言：
ansible的结果默认是输出到cli终端和日志里面的，用惯了saltsatck的returners数据回调后，也很是喜欢ansible也有，一开始不知道有这个功能，自己也简单实现了这样的功能。
我的实现方式是，在模块里面做一些输出的逻辑。当使用ansible runner api的时候，是在后面runner代码，最后加了一段往redis输出的逻辑。 这里实现数据的输出有些独特，但是只能是在模块和 api方面搞 。 如果是用playbook的话，按照我以前的思路的话，再继续改ansbile的源码。 这两天听沈灿说，ansible有个callback_plugins的功能，可以对于执行的状态做一些判断，比如，执行成功，执行失败，异步执行，异步执行失败，playbook开始，结束等等。
沈灿这货先写了关于ansible callbacks的文章，我看到了后，才知道有而一个东西。大家可以看看 。
http://www.shencan.net/index.php/2014/07/17/ansible-%E6%8F%92%E4%BB%B6%E4%B9%8Bcallback_plugins-%EF%BC%88%E5%AE%9E%E6%88%98%EF%BC%89/
我也不说复杂了，就简单说一个例子，把执行的结果，都推到redis里面，也可以暂存到sqlite数据库里面，只是这段代码我给屏蔽了，有兴趣的朋友再搞搞。对于redis里面的数据可以写一个页面展现下，专门记录错误的问题，成功的就pass掉。
原文：http://rfyiamcool.blog.51cto.com/1030776/1440624
#xiaorui.cc
import os
import time
import sqlite3
import redis
import json
dbname = '/tmp/setup.db'
TIME_FORMAT='%Y-%m-%d %H:%M:%S'
try:
con = sqlite3.connect(dbname)
cur = con.cursor()
except:
pass
def log(host, data):
# if type(data) == dict:
# invocation = data.pop('invocation', None)
# if invocation.get('module_name', None) != 'setup':
# return
#
# facts = data.get('ansible_facts', None)
#
# now = time.strftime(TIME_FORMAT, time.localtime())
#
# try:
# # `host` is a unique index
# cur.execute("REPLACE INTO inventory (now, host, arch, dist, distvers, sys,kernel) VALUES(?,?,?,?,?,?,?);",
# (
# now,
# facts.get('ansible_hostname', None),
# facts.get('ansible_architecture', None),
# facts.get('ansible_distribution', None),
# facts.get('ansible_distribution_version', None),
# facts.get('ansible_system', None),
# facts.get('ansible_kernel', None)
# ))
# con.commit()
# except:
# pass
#
class CallbackModule(object):
def runner_on_ok(self, host, res):
r = redis.Redis(host='127.0.0.1', port=6379, db=0)
r.set(host,str(res))
f = open('/tmp/11','a')
f.write(str(host))
f.write(str(res))
f.close()
log(host, res)
def runner_on_failed(self, host, res, ignore_errors=False):
f = open('/tmp/11','a')
f.write('\nbad\n')
f.close()
log(host, res)
还是可以接收所有的facts数据的。
原文：http://rfyiamcool.blog.51cto.com/1030776/1440624
原文：http://rfyiamcool.blog.51cto.com/1030776/1440624
虽然我上面的例子用了redis，sqlite数据库，其实我个人推荐用mongodb这样的文档数据库的。因为ansible主runner函数，给callbacks传递了一个叫res的变量，他本身就是一个dict对象，如果放到redis的hash，sqlite的各种字段，够你烦的了，如果直接mongo，那就简单了，直接insert ！ 欧了
这里在show一个邮件的callbacks代码，场景是，非常消耗时间的任务，当执行完成后，查看结果咋办？ 但是你也可以在终端继续看，既然咱们讲了callbacks_plugins,就可以把结果push到你的邮箱里面，当然只给你发错误的，有问题的。 下面的callback代码需要自己替换成自己用的邮箱、密码、smtp服务器。
#xiaorui.cc
原文：http://rfyiamcool.blog.51cto.com/1030776/1440624
import smtplib
def mail(subject='Ansible error mail', sender='<root>', to='root', cc=None, bcc=None, body=None):
if not body:
body = subject
smtp = smtplib.SMTP('localhost')
content = 'From: %s\n' % sender
content += 'To: %s\n' % to
if cc:
content += 'Cc: %s\n' % cc
content += 'Subject: %s\n\n' % subject
content += body
addresses = to.split(',')
if cc:
addresses += cc.split(',')
if bcc:
addresses += bcc.split(',')
for address in addresses:
smtp.sendmail(sender, address, content)
smtp.quit()
class CallbackModule(object):
"""
This Ansible callback plugin mails errors to interested parties.
"""
def runner_on_failed(self, host, res, ignore_errors=False):
if ignore_errors:
return
sender = '"Ansible: %s" <root>' % host
subject = 'Failed: %(module_name)s %(module_args)s' % res['invocation']
body = 'The following task failed for host ' + host + ':\n\n%(module_name)s %(module_args)s\n\n' % res['invocation']
if 'stdout' in res.keys() and res['stdout']:
subject = res['stdout'].strip('\r\n').split('\n')[-1]
body += 'with the following output in standard output:\n\n' + res['stdout'] + '\n\n'
if 'stderr' in res.keys() and res['stderr']:
subject = res['stderr'].strip('\r\n').split('\n')[-1]
body += 'with the following output in standard error:\n\n' + res['stderr'] + '\n\n'
if 'msg' in res.keys() and res['msg']:
subject = res['msg'].strip('\r\n').split('\n')[0]
body += 'with the following message:\n\n' + res['msg'] + '\n\n'
body += 'A complete dump of the error:\n\n' + str(res)
mail(sender=sender, subject=subject, body=body)
def runner_on_unreachable(self, host, res):
sender = '"Ansible: %s" <root>' % host
if isinstance(res, basestring):
subject = 'Unreachable: %s' % res.strip('\r\n').split('\n')[-1]
body = 'An error occured for host ' + host + ' with the following message:\n\n' + res
else:
subject = 'Unreachable: %s' % res['msg'].strip('\r\n').split('\n')[0]
body = 'An error occured for host ' + host + ' with the following message:\n\n' + \
res['msg'] + '\n\nA complete dump of the error:\n\n' + str(res)
mail(sender=sender, subject=subject, body=body)
def runner_on_async_failed(self, host, res, jid):
sender = '"Ansible: %s" <root>' % host
if isinstance(res, basestring):
subject = 'Async failure: %s' % res.strip('\r\n').split('\n')[-1]
body = 'An error occured for host ' + host + ' with the following message:\n\n' + res
else:
subject = 'Async failure: %s' % res['msg'].strip('\r\n').split('\n')[0]
body = 'An error occured for host ' + host + ' with the following message:\n\n' + \
res['msg'] + '\n\nA complete dump of the error:\n\n' + str(res)
mail(sender=sender, subject=subject, body=body)
如果不想发邮件，又不想搞到数据库里面，怎么办？ 那来点低端的。 直接写入到文件里面。
官方给出一个例子，大家照着模板写就行了。
import os
import time
import json
TIME_FORMAT="%b %d %Y %H:%M:%S"
MSG_FORMAT="%(now)s - %(category)s - %(data)s\n\n"
if not os.path.exists("/var/log/ansible/hosts"):
os.makedirs("/var/log/ansible/hosts")
def log(host, category, data):
if type(data) == dict:
if 'verbose_override' in data:
# avoid logging extraneous data from facts
data = 'omitted'
else:
data = data.copy()
invocation = data.pop('invocation', None)
data = json.dumps(data)
if invocation is not None:
data = json.dumps(invocation) + " => %s " % data
path = os.path.join("/var/log/ansible/hosts", host)
now = time.strftime(TIME_FORMAT, time.localtime())
fd = open(path, "a")
fd.write(MSG_FORMAT % dict(now=now, category=category, data=data))
fd.close()
class CallbackModule(object):
"""
logs playbook results, per host, in /var/log/ansible/hosts
"""
def on_any(self, *args, **kwargs):
pass
def runner_on_failed(self, host, res, ignore_errors=False):
log(host, 'FAILED', res)
def runner_on_ok(self, host, res):
log(host, 'OK', res)
def runner_on_skipped(self, host, item=None):
log(host, 'SKIPPED', '...')
def runner_on_unreachable(self, host, res):
log(host, 'UNREACHABLE', res)
def runner_on_no_hosts(self):
pass
def runner_on_async_poll(self, host, res, jid, clock):
pass
def runner_on_async_ok(self, host, res, jid):
pass
def runner_on_async_failed(self, host, res, jid):
log(host, 'ASYNC_FAILED', res)
def playbook_on_start(self):
pass
def playbook_on_notify(self, host, handler):
pass
def playbook_on_no_hosts_matched(self):
pass
def playbook_on_no_hosts_remaining(self):
pass
def playbook_on_task_start(self, name, is_conditional):
pass
def playbook_on_vars_prompt(self, varname, private=True, prompt=None, encrypt=None, confirm=False, salt_size=None, salt=None, default=None):
pass
def playbook_on_setup(self):
pass
def playbook_on_import_for_host(self, host, imported_file):
log(host, 'IMPORTED', imported_file)
def playbook_on_not_import_for_host(self, host, missing_file):
log(host, 'NOTIMPORTED', missing_file)
def playbook_on_play_start(self, name):
pass
def playbook_on_stats(self, stats):
pass
原文： http://rfyiamcool.blog.51cto.com/1030776/1440624
也可以把结果以webhooks钩子的方式，做些你想做的东西。
callbacks的各种状态还是很多的，每个函数的字眼还是很好理解的。
比如：
on_any 哪都有他 ！任何的状态他触发。
runner_on_failed 失败
runner_on_ok 成功
runner_on_unreachable 网络不可达
runner_on_no_hosts 没有主机
runner_on_async_poll 任务的异步执行
playbook_on_start playbook执行的时候
等等。。。。 自己尝试吧 ！
class CallbackModule(object): def on_any(self, *args, **kwargs): pass def runner_on_failed(self, host, res, ignore_errors=False): log(host, 'FAILED', res) def runner_on_ok(self, host, res): log(host, 'OK', res) def runner_on_skipped(self, host, item=None): log(host, 'SKIPPED', '...') def runner_on_unreachable(self, host, res): log(host, 'UNREACHABLE', res) def runner_on_no_hosts(self): pass def runner_on_async_poll(self, host, res, jid, clock): pass def runner_on_async_ok(self, host, res, jid): pass def runner_on_async_failed(self, host, res, jid): log(host, 'ASYNC_FAILED', res) def playbook_on_start(self): pass def playbook_on_notify(self, host, handler): pass def playbook_on_no_hosts_matched(self): pass def playbook_on_no_hosts_remaining(self): pass def playbook_on_task_start(self, name, is_conditional): pass def playbook_on_vars_prompt(self, varname, private=True, prompt=None, encrypt=None, confirm=False, salt_size=None, salt=None, default=None): pass def playbook_on_setup(self): pass def playbook_on_import_for_host(self, host, imported_file): log(host, 'IMPORTED', imported_file) def playbook_on_not_import_for_host(self, host, missing_file): log(host, 'NOTIMPORTED', missing_file) def playbook_on_play_start(self, name): pass def playbook_on_stats(self, stats): pass
原文： http://rfyiamcool.blog.51cto.com/1030776/1440624
咱们可以简单看看ansible的callbacks源码。
规定了两个类，一个是供应ansible-playbook用的，还有一个是供应ansible，也就是cli。 根据各种的情况，调用不同的函数，首先会打到终端，再log日志，最后是自定义的callbacks的插件。
好了，就这样了 ！！！！
本文出自 “峰云，就她了。” 博客，谢绝转载！