一、agent linux侧配置

这边目前就直接在zabbix上实现，首先就是脚本，我用python2实现

脚本名：check_yuliang_data.py 脚本路径：/etc/zabbix/zabbix_agent2.d

#!/usr/bin/python
import os
import json
from datetime import datetime
import calendar

DB_NAME = "bscreen"
DB_USER = "postgres"

QUERY_STATUS = """
    SELECT
        CASE WHEN count(*) = 0 THEN 0 ELSE 1 END AS result_status
    FROM bscreen.bigscreen.reservoir_real t1
    WHERE t1.time > now() + '-12 hour';
"""
QUERY_LATEST_TIME = """
    SELECT max(time) as latest_data_time
    FROM bscreen.bigscreen.reservoir_real;
"""

data = {}

with os.popen('sudo -u "{}" psql -d "{}" -U "{}" -t -c "{}" 2>/dev/null'.format(DB_USER, DB_NAME, DB_USER, QUERY_STATUS)) as f:
    result_status = f.read().strip()

with os.popen('sudo -u "{}" psql -d "{}" -U "{}" -t -c "{}" 2>/dev/null'.format(DB_USER, DB_NAME, DB_USER, QUERY_LATEST_TIME)) as f:
    latest_data_time1 = f.read().strip()

latest_data_time2 = datetime.strptime(latest_data_time1, '%Y-%m-%d %H:%M:%S')
latest_data_time3 = latest_data_time2.replace(microsecond=0)
latest_data_time4 = calendar.timegm(latest_data_time3.utctimetuple())
latest_data_time = datetime.fromtimestamp(latest_data_time4).strftime('%Y-%m-%d %H:%M:%S')


data['{#RESULT_STATUS}'] = result_status
data['{#LATEST_DATA_TIME}'] = latest_data_time
jsonStr = json.dumps({'data': [data]}, sort_keys=True, indent=4)
print(jsonStr)

脚本里面定义了两个键{#RESULT_STATUS}、{#LATEST_DATA_TIME}，方便在zabbix上显示时能直观的观看

创建zabbix引入脚本的配置文件：ZHJX_Port_Status.conf 路径：/etc/zabbix/zabbix_agent2.d

UserParameter=query-yuliang-data[*],/usr/bin/python /etc/zabbix/zabbix_agent2.d/check_yuliang_data.py

以上两个脚本布置完成后，需要开放psql命令免密

# 开启写权限
chmod u+w /etc/sudoers
# 编辑
vim /etc/sudoers
#加入psql免密信息
zabbix  ALL=(ALL)       NOPASSWD: /usr/bin/psql
# 关闭写权限
chmod u-w /etc/sudoers

然后

# 重启zabbix-agent2
systemctl restart zabbix-agent2

再然后

# 在服务端测试agent端刚刚配置的.conf文件中的键（query-yuliang-data）
[root@docker-zabbix ~]# zabbix_get -s '172.16.35.53' -p 10050 -k query-yuliang-data
# 这是成功后的结果
{
    "data": [
        {
            "{#LATEST_DATA_TIME}": "2023-05-04 09:00:00",
            "{#RESULT_STATUS}": "0"
        }
    ]
}

好了，linux这边的配置完成了！