saltstack--api接口

利用api接口来实现SaltStack推送，管理集群是非常方便的手段，下面我们尝试利用API来实现Salt的功能

如果server2和server3没有开启salt-minion服务，请先开启
1.在server1安装salt-api服务

[root@server1 master.d]# yum install -y salt-api

2.配置签名证书

[root@server1 tls]# cd private/
[root@server1 private]# ls
[root@server1 private]# openssl genrsa 2048

[root@server1 private]# openssl genrsa 2048 > localhost.key
[root@server1 private]# ls
localhost.key
[root@server1 private]# md5sum localhost.key 
a45eec69648e2d4b4168b3bdf675d771  localhost.key
[root@server1 tls]# cd certs/
[root@server1 certs]# ls
ca-bundle.crt        make-dummy-cert  renew-dummy-cert
ca-bundle.trust.crt  Makefile


[root@server1 certs]# make testcert
umask 77 ; \
/usr/bin/openssl req -utf8 -new -key /etc/pki/tls/private/localhost.key -x509 -days 365 -out /etc/pki/tls/certs/localhost.crt -set_serial 0
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [XX]:cn
State or Province Name (full name) []:shaanxi   
Locality Name (eg, city) [Default City]:xi'an
Organization Name (eg, company) [Default Company Ltd]:redgat
Organizational Unit Name (eg, section) []:linux
Common Name (eg, your name or your server's hostname) []:server1
Email Address []:root@localhost
[root@server1 certs]# ls
ca-bundle.crt        localhost.crt    Makefile
ca-bundle.trust.crt  make-dummy-cert  renew-dummy-cert

3.编辑api.conf和auth.conf

[root@server1 private]# cd /etc/salt/master.d/
[root@server1 master.d]# ls
[root@server1 master.d]# vim api.conf       #指定证书密钥和端口
rest_cherrypy:
  port: 8000
  ssl_crt: /etc/pki/tls/certs/localhost.crt
  ssl_key: /etc/pki/tls/private/localhost.key

[root@server1 master.d]# useradd saltapi
[root@server1 master.d]# passwd saltapi

[root@server1 master.d]# vim auth.conf
external_auth:
  pam:
    saltapi:
      -  .*
      - '@wheel'    # to allow access to all wheel modules
      - '@runner'
      - '@jobs'

4.打开salt-api，重启salt-master,并查看是否监听8000端口

[root@server1 master.d]# systemctl restart salt-master
[root@server1 master.d]# systemctl start salt-api
[root@server1 master.d]# ls
api.conf  auth.conf
[root@server1 master.d]# netstat -ntlp
tcp        0      0 0.0.0.0:8000            0.0.0.0:*               LISTEN      10915/salt-api    

5.登陆服务并获得token

[root@server1 master.d]# curl -sSk https://localhost:8000/login \ #登陆获取token值
> -H 'Accept: application/x-yaml' \
> -d username=saltapi \
> -d password=redhat -d eauth=pam
return:
- eauth: pam
  expire: 1565793955.933131
  perms:
  - .*
  - '@wheel'
  - '@runner'
  - '@jobs'
  start: 1565750755.933129
  token: ac667b5b9f061d27ee0247c2608b3c35774c6018
  user: saltapi

6.利用token号测试

[root@server1 master.d]# curl -sSk https://localhost:8000/ -H 'Accept: application/x-yaml' -H 'X-Auth-Token: ac667b5b9f061d27ee0247c2608b3c35774c6018' -d client=local -d tgt='*' -d fun=test.ping

7.配置python脚本测试能否成功

[root@server1 ~]# vim saltapi.py

# -*- coding: utf-8 -*-

import urllib2,urllib
import time

try:
    import json
except ImportError:
    import simplejson as json

class SaltAPI(object):
    __token_id = ''
    def __init__(self,url,username,password):
        self.__url = url.rstrip('/')
        self.__user = username
        self.__password = password

    def token_id(self):
        ''' user login and get token id '''
        params = {'eauth': 'pam', 'username': self.__user, 'password': self.__password}
        encode = urllib.urlencode(params)
        obj = urllib.unquote(encode)
        content = self.postRequest(obj,prefix='/login')
	try:
            self.__token_id = content['return'][0]['token']
        except KeyError:
            raise KeyError

    def postRequest(self,obj,prefix='/'):
        url = self.__url + prefix
        headers = {'X-Auth-Token'   : self.__token_id}
        req = urllib2.Request(url, obj, headers)
        opener = urllib2.urlopen(req)
        content = json.loads(opener.read())
        return content

    def list_all_key(self):
        params = {'client': 'wheel', 'fun': 'key.list_all'}
        obj = urllib.urlencode(params)
        self.token_id()
        content = self.postRequest(obj)
        minions = content['return'][0]['data']['return']['minions']
        minions_pre = content['return'][0]['data']['return']['minions_pre']
        return minions,minions_pre

    def delete_key(self,node_name):
        params = {'client': 'wheel', 'fun': 'key.delete', 'match': node_name}
        obj = urllib.urlencode(params)
        self.token_id()
        content = self.postRequest(obj)
        ret = content['return'][0]['data']['success']
        return ret

    def accept_key(self,node_name):
        params = {'client': 'wheel', 'fun': 'key.accept', 'match': node_name}
        obj = urllib.urlencode(params)
        self.token_id()
        content = self.postRequest(obj)
        ret = content['return'][0]['data']['success']
        return ret

    def remote_noarg_execution(self,tgt,fun):
        ''' Execute commands without parameters '''
        params = {'client': 'local', 'tgt': tgt, 'fun': fun}
        obj = urllib.urlencode(params)
        self.token_id()
        content = self.postRequest(obj)
        ret = content['return'][0][tgt]
        return ret

    def remote_execution(self,tgt,fun,arg):
        ''' Command execution with parameters '''        
        params = {'client': 'local', 'tgt': tgt, 'fun': fun, 'arg': arg}
        obj = urllib.urlencode(params)
        self.token_id()
        content = self.postRequest(obj)
        ret = content['return'][0][tgt]
        return ret

    def target_remote_execution(self,tgt,fun,arg):
        ''' Use targeting for remote execution '''
        params = {'client': 'local', 'tgt': tgt, 'fun': fun, 'arg': arg, 'expr_form': 'nodegroup'}
        obj = urllib.urlencode(params)
        self.token_id()
        content = self.postRequest(obj)
        jid = content['return'][0]['jid']
        return jid

    def deploy(self,tgt,arg):
        ''' Module deployment '''
        params = {'client': 'local', 'tgt': tgt, 'fun': 'state.sls', 'arg': arg}
        obj = urllib.urlencode(params)
        self.token_id()
        content = self.postRequest(obj)
        return content

    def async_deploy(self,tgt,arg):
        ''' Asynchronously send a command to connected minions '''
        params = {'client': 'local_async', 'tgt': tgt, 'fun': 'state.sls', 'arg': arg}
        obj = urllib.urlencode(params)
        self.token_id()
        content = self.postRequest(obj)
        jid = content['return'][0]['jid']
        return jid

    def target_deploy(self,tgt,arg):
        ''' Based on the node group forms deployment '''
        params = {'client': 'local_async', 'tgt': tgt, 'fun': 'state.sls', 'arg': arg, 'expr_form': 'nodegroup'}
        obj = urllib.urlencode(params)
        self.token_id()
        content = self.postRequest(obj)
        jid = content['return'][0]['jid']
        return jid

def main():
    sapi = SaltAPI(url='https://localhost:8000',username='saliapi',password='redhat')
    #sapi.token_id()
    print sapi.list_all_key()   #列出所有节点
    #sapi.delete_key('test-01')
    #sapi.accept_key('test-01')
    sapi.deploy('server2','apache.install') #server2安装httpd，这需要我们之前在server1上配置saltstack一键化部署httpd服务的install.sls相关文件
    #print sapi.remote_noarg_execution('test-01','grains.items')

if __name__ == '__main__':
    main()

[root@server1 ~]# systemctl restart salt-master
[root@server1 ~]# systemctl restart salt-api

[root@server2 ~]# systemctl stop httpd #关闭httpd做测试
[root@server1 ~]# python saltapi.py
([u’server2’, u’server3’], [])

server2查看：
[root@server2 ~]# ps ax

[root@server2 ~]# netstat -ntlp