centos7.6下的python3.6.9虚拟环境安装elastalert

Posted 2022-11-09 reblue520

centos7.6安装python3.6.9+elastalert

1.编译安装python3.6.9环境
# 安装依赖
yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
# 获取编译安装python3.6.9
mkdir -p /usr/local/python3
wget https://www.python.org/ftp/python/3.6.9/Python-3.6.9.tgz
tar xf Python-3.6.9.tgz
cd Python-3.6.9
./configure --prefix=/usr/local/python-3.6.9
make && make install
ln -s /usr/local/python3/bin/python-3.6.9 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3

2.安装virtualenv虚拟环境
pip3 install virtualenv
# 创建存放虚拟环境的目录
mkdir -p  /usr/local/venv_py3.6_elastalert-0.2.1

# 创建纯净的虚拟环境
cd /usr/local
git clone https://github.com/Yelp/elastalert.git
cd /usr/local/elastalert

/usr/local/python-3.6.9/bin/virtualenv --no-site-packages --python=/usr/local/python-3.6.9/bin/python3.6 /usr/local/venv_py3.6_elastalert-0.2.1
[root@eus-kibana-elastalert-01:/usr/local/venv_py3.6_elastalert-0.2.1]# source bin/activate
(venv_py3.6_elastalert-0.2.1) [root@eus-kibana-elastalert-01:/usr/local/venv_py3.6_elastalert-0.2.1]#

3.在虚拟的python3.6环境中安装alasticalert
# 指定库，安装依赖，否则可能安装失败

(venv_py3.6_elastalert-0.2.1) [root@eus-kibana-elastalert-01:/usr/local/elastalert]# pip install -r requirements.txt -i https://pypi.python.org/simple

# 安装主程序，否则无法使用 elastalert-create-index 命令
(venv_py3.6_elastalert-0.2.1) [root@eus-kibana-elastalert-01:/usr/local/elastalert]# python setup.py install

# 运行 elastalert-create-index 配置
(venv_py3.6_elastalert-0.2.1) [root@eus-kibana-elastalert-01:/usr/local/elastalert]# elastalert-create-index
Enter Elasticsearch host: 172.30.0.62
Enter Elasticsearch port: 19200
Use SSL? t/f: f
Enter optional basic-auth username (or leave blank): 
Enter optional basic-auth password (or leave blank): 
Enter optional Elasticsearch URL prefix (prepends a string to the URL of every request): 
New index name? (Default elastalert_status) 
New alias name? (Default elastalert_alerts) 
Name of existing index to copy? (Default None) 
Elastic Version: 7.3.0
Reading Elastic 6 index mappings:
Reading index mapping ‘es_mappings/6/silence.json‘
Reading index mapping ‘es_mappings/6/elastalert_status.json‘
Reading index mapping ‘es_mappings/6/elastalert.json‘
Reading index mapping ‘es_mappings/6/past_elastalert.json‘
Reading index mapping ‘es_mappings/6/elastalert_error.json‘
New index elastalert_status created
Done!
(venv_py3.6_elastalert-0.2.1) [root@eus-kibana-elastalert-01:/usr/local/elastalert]# 


# 报错
(venv_py3.6_elastalert-0.2.1) [root@eus-kibana-elastalert-01:/usr/local/elastalert]# elastalert-test-rule example_rules/my_rule.yml

  File "/usr/local/venv_py3.6_elastalert-0.2.1/lib/python3.6/site-packages/tzlocal/unix.py", line 90, in _get_localzone
    utils.assert_tz_offset(tz)
  File "/usr/local/venv_py3.6_elastalert-0.2.1/lib/python3.6/site-packages/tzlocal/utils.py", line 38, in assert_tz_offset
    raise ValueError(msg)
ValueError: Timezone offset does not match system offset: 28800 != -25200. Please, check your config files.

# 代码和系统时区不匹配，重新设置为上海时区
(venv_py3.6_elastalert-0.2.1) [root@eus-kibana-elastalert-01:/usr/local/elastalert]# timedatectl set-timezone Asia/Shanghai
(venv_py3.6_elastalert-0.2.1) [root@eus-kibana-elastalert-01:/usr/local/elastalert]# elastalert-test-rule example_rules/my_rule.yml
INFO:elastalert:Note: In debug mode, alerts will be logged to console but NOT actually sent.
            To send them but remain verbose, use --verbose instead.
WARNING:elasticsearch:GET http://172.30.0.62:19200/logstash-*/_search?ignore_unavailable=true&size=1 [status:400 request:0.004s]
Error running your filter:
RequestError(400, ‘parsing_exception‘, ‘error‘: ‘root_cause‘: [‘type‘: ‘parsing_exception‘, ‘reason‘: ‘[term] query malformed, no start_object after query name‘, ‘line‘: 1, ‘col‘: 151], ‘type‘: ‘parsing_exception‘, ‘reason‘: ‘[term] query malformed, no start_object after query name‘, ‘line‘: 1, ‘col‘: 151, ‘status‘: 400)
INFO:elastalert:Note: In debug mode, alerts will be logged to console but NOT actually sent.
                To send them but remain verbose, use --verbose instead.
1 rules loaded
INFO:apscheduler.scheduler:Adding job tentatively -- it will be properly scheduled when the scheduler starts
WARNING:elasticsearch:GET http://172.30.0.62:19200/logstash-*/_search?_source_includes=%2A%2C%40timestamp&ignore_unavailable=true&scroll=30s&size=10000 [status:400 request:0.003s]
ERROR:root:Error running query: RequestError(400, ‘parsing_exception‘, ‘[term] query malformed, no start_object after query name‘)

Would have written the following documents to writeback index (default is elastalert_status):

elastalert_error - ‘message‘: "Error running query: RequestError(400, ‘parsing_exception‘, ‘[term] query malformed, no start_object after query name‘)", ‘traceback‘: [‘Traceback (most recent call last):‘, ‘  File "/usr/local/venv_py3.6_elastalert-0.2.1/lib/python3.6/site-packages/elastalert-0.2.1-py3.6.egg/elastalert/elastalert.py", line 384, in get_hits‘, ‘    **extra_args‘, ‘  File "/usr/local/venv_py3.6_elastalert-0.2.1/lib/python3.6/site-packages/elasticsearch/client/utils.py", line 84, in _wrapped‘, ‘    return func(*args, params=params, **kwargs)‘, ‘  File "/usr/local/venv_py3.6_elastalert-0.2.1/lib/python3.6/site-packages/elasticsearch/client/__init__.py", line 819, in search‘, ‘    "GET", _make_path(index, "_search"), params=params, body=body‘, ‘  File "/usr/local/venv_py3.6_elastalert-0.2.1/lib/python3.6/site-packages/elasticsearch/transport.py", line 350, in perform_request‘, ‘    timeout=timeout,‘, ‘  File "/usr/local/venv_py3.6_elastalert-0.2.1/lib/python3.6/site-packages/elasticsearch/connection/http_requests.py", line 156, in perform_request‘, ‘    self._raise_error(response.status_code, raw_data)‘, ‘  File "/usr/local/venv_py3.6_elastalert-0.2.1/lib/python3.6/site-packages/elasticsearch/connection/base.py", line 181, in _raise_error‘, ‘    status_code, error_message, additional_info‘, "elasticsearch.exceptions.RequestError: RequestError(400, ‘parsing_exception‘, ‘[term] query malformed, no start_object after query name‘)"], ‘data‘: ‘rule‘: ‘eus-log-elasticsearch-cluster-alert‘, ‘query‘: ‘query‘: ‘bool‘: ‘filter‘: ‘bool‘: ‘must‘: [‘range‘: ‘@timestamp‘: ‘gt‘: ‘2019-09-17T05:06:25.831477Z‘, ‘lte‘: ‘2019-09-17T05:21:25.831477Z‘, ‘term‘: None, ‘query_string‘: ‘query‘: ‘message: error‘], ‘sort‘: [‘@timestamp‘: ‘order‘: ‘asc‘]


4.配置elastalert
##############全局配置
[root:/usr/local/elastalert#cp  config.yaml.example config.yaml
#存放elastalert 规则的文件夹，你的elastalert 放到哪里就放到哪里就行了
rules_folder: /usr/local/elastalert/example_rules
 
#Elastalert 多久去查询一下根据定义的规则去elasticsearch 查询是否有符合规则的字段，如果有就会触发报警，如果没有就等待下一次时间再检查，时间定义的单位从周到秒都可以，具体定义方法如下。
run_every:
 #seconds：1
  minutes: 1
  #hours：1
  #days：1
  #weeks：1
 
#当查询开始一直到结束，最大的缓存时间。
buffer_time:
  minutes: 15
 
#你的Elasticsearch ip地址
es_host: 172.30.0.52
 
#Elasticsearch 的端口
es_port: 9200
 
#这个是elastalert 在es里边写的index
# The index on es_host which is used for metadata storage
# This can be a unmapped index, but it is recommended that you run
# elastalert-create-index to set a mapping
writeback_index: elastalert_status
 
#如果alert当时没有发出去重试多久之后放弃发送；
alert_time_limit:
  days: 2

[root@eus-kibana-elastalert-01:/usr/local/elastalert]# egrep -v ‘^#|^$‘ config.yaml
rules_folder: example_rules
run_every:
  minutes: 1
buffer_time:
  minutes: 15
es_host: 172.30.0.62
es_port: 19200
writeback_index: elastalert_status
writeback_alias: elastalert_alerts
alert_time_limit:
  days: 2

##############rules 的定义
[root@ws-elk-cluster01:/usr/local/elastalert]#cp example_frequency.yaml my_rule.yaml
vi my_rule.yaml
# Alert when the rate of events exceeds a threshold
#Elasticsearch  机器
es_host: 192.168.115.65
 
#Elasticsearch  端口
es_port: 9200
 
#如果elasticsearch 有认证，填写用户名和密码的地方
# (Optional) basic-auth username and password for Elasticsearch
#es_username: someusername
#es_password: somepassword
 
#rule name 必须是独一的，不然会报错，这个定义完成之后，会成为报警邮件的标题
# (Required)
# Rule name, must be unique
name: ws-elk-cluster-alert
 
#配置一种数据验证的方式，有 any，blacklist，whitelist，change，frequency，spike，flatline，new_term，cardinality
any：只要有匹配就报警；
blacklist：compare_key字段的内容匹配上 blacklist数组里任意内容；
whitelist：compare_key字段的内容一个都没能匹配上whitelist数组里内容；
change：在相同query_key条件下，compare_key字段的内容，在 timeframe范围内 发送变化；
frequency：在相同 query_key条件下，timeframe 范围内有num_events个被过滤出 来的异常；
spike：在相同query_key条件下，前后两个timeframe范围内数据量相差比例超过spike_height。其中可以通过spike_type设置具体涨跌方向是- up,down,both 。还可以通过threshold_ref设置要求上一个周期数据量的下限，threshold_cur设置要求当前周期数据量的下限，如果数据量不到下限，也不触发；
flatline：timeframe 范围内，数据量小于threshold 阈值；
new_term：fields字段新出现之前terms_window_size(默认30天)范围内最多的terms_size (默认50)个结果以外的数据；
cardinality：在相同 query_key条件下，timeframe范围内cardinality_field的值超过 max_cardinality 或者低于min_cardinality
 
# (Required)
# Type of alert.
# the frequency rule type alerts when num_events events occur with timeframe time
#我配置的是frequency，这个需要两个条件满足，在相同 query_key条件下，timeframe 范围内有num_events个被过滤出来的异常
type: frequency
 
#这个index 是指再kibana 里边的index，支持正则匹配，支持多个index，同时如果嫌麻烦直接* 也可以。
index: customer*
#index: es-nginx*,winlogbeat*
 
#时间出发的次数
num_events: 5
 
#和上边的参数关联，也就是说在4分钟内出发5次会报警
timeframe:
  minutes: 4
 
#这个还是非常关键的地方，就是你希望程序的message里边出现了什么样的关键字就报警，这个其实就是elasticsearch 的query语句，支持 AND&OR等。
filter:
- query:
    query_string:
      query: "message: 错误  OR Error"
 
#一但需要报警用那种方式报警，支持如下的方式，同时官方支持自定义，我用常规的邮件方式作为报警方式。
alert:
- "email"
#在邮件正文会显示你定义的alert_text
alert_text: "Ref Log http://192.168.254.194"
#报警邮箱的smtp server
smtp_host: mail.chinasoft.cn
#报警邮箱的smtp 端口
smtp_port: 25
#需要把认证信息写到额外配置文件里，需要user和password两个属性
smtp_auth_file: /usr/local/elastalert/example_rules/smtp_auth_file.yaml
email_reply_to:[e-mail]
from_addr: [e-mail]
 
#接受报警邮箱的地址,可以写多个，当然后边搞个邮件组最好了。
# (required, email specific)
# a list of email addresses to send alerts to
email:
- "[e-mail]"


[root@eus-kibana-elastalert-01:/usr/local/elastalert/example_rules]# egrep -v ‘^#|^$‘ my_rule.yml 
es_host: 172.30.0.62
es_port: 19200
name: eus-log-elasticsearch-cluster-alert
type: frequency
index: filebeats-log*
num_events: 5
timeframe:
  hours: 4
filter:
- term:
- query:
    query_string:
      query: "message: error"
alert:
- "email"
email:
- "[e-mail]"
alert_text: "Ref Log http://172.30.0.62"
smtp_host: mail.chinasoft.cn
smtp_port: 25
smtp_auth_file: /usr/local/elastalert/example_rules/smtp_auth_file.yaml
email_reply_to: [e-mail]
from_addr: [e-mail]

 
######################smtp认证文件
[root@ws-elk-cluster01:/usr/local/elastalert]#vi smtp_auth_file.yaml
user: "jack"
password: "jack123"


#通过elastalert-test-rule 测试一下我们写的rule 是否有问题
[root@ws-elk-cluster01:/usr/local/elastalert/example_rules]# elastalert-test-rule my_rule.yaml


#配置检查成功之后，我们就可以把程序跑起来了，把所有的日志直接打在前端，这样方便验证
/usr/local/venv_py3.6_elastalert-0.2.1/bin/python3.6 -m elastalert.elastalert --verbose --rule /usr/local/elastalert/example_rules/my_rule.yaml