zabbix監控之自定義item

 

 

zabbix安裝完成後,當須要使用自定義腳本構建自定義item必須注意如下幾點:

1.首先使用zabbix_get手動在zabbix-server服務端獲取監控的默認的item值,以下:

[root@aliyun ~]# zabbix_get -s 39.106.219.238 -p 10050 -k "system.swap.size[,free]"
0

 當遇到zabbix_get命令沒有找到時,解決辦法:yum install -y zabbix_get

2.在zabbix-server端打開配置文件找到:

AlertScriptsPath=/usr/lib/zabbix/alertscripts

默認將自定義的腳本放在該位置

3.在zabbix-agent端打開配置文件找到:

Include=/usr/local/etc/zabbix_agentd.conf.d/.conf

確認上面幾步後,如今開始建立自定義腳本建立自定義item:

1.編寫item腳本:

#!/usr/bin/env python
import MySQLdb

class Db:
    def __init__(self, host1, user1, password1, db1):
        self.host = host1
        self.user = user1
        self.password = password1
        self.db = db1
        try:
            self._conn = MySQLdb.connect(host=self.host, user=self.user, passwd=self.password, db=self.db)  
        except Exception as e:
            print e
        self._cursor = self._conn.cursor()  

    def fetchone(self, sql1):
        self._cursor.execute(sql1)   
        result = self._cursor.fetchone()   
        return result


host = '172.16.23.131'
user = 'root'
db = 'mysql'
password = 'redhat'
sql = "show global status like 'questions';"
sql1 = "show global status like 'uptime';"
if __name__ == '__main__':
    db_conn = Db(host, user, password, db)
    result = db_conn.fetchone(sql)
    result1 = db_conn.fetchone(sql1)
    print int(result[1])/int(result1[1])

 手動執行:

[root@zabbix-server zabbix_agentd.d]# python /usr/lib/zabbix/alertscripts/getQueryCountFromMysql.py 
7

 將該腳本賦予執行權限:chmod +x /usr/lib/zabbix/alertscripts/getQueryCountFromMysql.py

2.在zabbix-agent端編寫配置文件:重啓zabbix-agent服務

/etc/zabbix/zabbix_agentd.d/userparameter_script.conf

[root@zabbix-server zabbix_agentd.d]# cat userparameter_script.conf 
UserParameter=script.getQueryCountFromMysql.py,/usr/lib/zabbix/alertscripts/getQueryCountFromMysql.py

 格式:UserParameter=key,command

手動在zabbix-server端獲取值:

[root@zabbix-server zabbix_agentd.d]# zabbix_get -s 172.16.23.131 -k script.getQueryCountFromMysql.py 
7

 手動獲取到值後,在zabbix頁面進行配置:

1.建立自定義template:

 

2.建立自定義item:

3.建立自定義graph:

上面各步驟建立完成後,將此template加在host上:

 

 過一段時間後,查看graphs:

 

 能夠看出自定義item的值已經能夠顯示出來了

 若是自定義腳本帶有參數的話,作以下修改:

[root@zabbix-server alertscripts]# cat /usr/lib/zabbix/alertscripts/getmysqlstatu.py 
#!/usr/bin/env python
# -*- coding: UTF-8 -*-
import MySQLdb
import sys

class Db:
    def __init__(self, host1, user1, password1, db1):
        self.host = host1
        self.user = user1
        self.password = password1
        self.db = db1
        try:
            self._conn = MySQLdb.connect(host=self.host, user=self.user, passwd=self.password, db=self.db)  # 鏈接mysql
        except Exception as e:
            print e
        self._cursor = self._conn.cursor()  # 建立遊標

    def fetchone(self, sql1):
        self._cursor.execute(sql1)   # 執行sql語句
        result = self._cursor.fetchone()    # 獲取執行的結果
        return result

    def getops(self):
        questions = db_conn.fetchone(sql_questions)
        uptime = db_conn.fetchone(sql_uptime)
        return int(questions[1])/int(uptime[1])


host = '127.0.0.1'
user = 'root'
db = 'mysql'
password = 'redhat'
sql_questions = "show global status like 'questions';"
sql_uptime = "show global status like 'uptime';"
if __name__ == '__main__':
    db_conn = Db(host, user, password, db)
    result = db_conn.getops()
    if sys.argv[1] == 'qps':
        print result

 

# chmod +x getmysqlstatu.py

 而後在zabbix-agent作下面配置:

[root@zabbix-server alertscripts]# cat /etc/zabbix/zabbix_agentd.d/userparameter_script.conf 
UserParameter=script.getQueryCountFromMysql.py,/usr/lib/zabbix/alertscripts/getQueryCountFromMysql.py
UserParameter=script.getmysqlstatu.py[*],/usr/lib/zabbix/alertscripts/getmysqlstatu.py $1

 在zabbix-server端手動獲取item的值:

[root@zabbix-server alertscripts]# zabbix_get -s 172.16.23.131 -k script.getmysqlstatu.py[qps]
7

 獲取qps和tps雙指標:

[root@zabbix-server alertscripts]# cat getmysqlstatu.py 
#!/usr/bin/env python
# -*- coding: UTF-8 -*-
import MySQLdb
import sys

class Db:
    def __init__(self, host1, user1, password1, db1):
        self.host = host1
        self.user = user1
        self.password = password1
        self.db = db1
        try:
            self._conn = MySQLdb.connect(host=self.host, user=self.user, passwd=self.password, db=self.db)  # 鏈接mysql
        except Exception as e:
            print e
        self._cursor = self._conn.cursor()  # 建立遊標

    def fetchone(self, sql1):
        self._cursor.execute(sql1)   # 執行sql語句
        result = self._cursor.fetchone()    # 獲取執行的結果
        return result

    def getqps(self):
        questions = db_conn.fetchone(sql_questions)
        uptime = db_conn.fetchone(sql_uptime)
        return int(questions[1])/int(uptime[1])

    def gettps(self):
        Com_rollback = db_conn.fetchone(sql_Com_rollback)
        Com_commit = db_conn.fetchone(sql_Com_commit)
        uptime = db_conn.fetchone(sql_uptime)
        return (int(Com_rollback[1])+int(Com_commit[1]))/int(uptime[1])


host = '127.0.0.1'
user = 'root'
db = 'mysql'
password = 'redhat'
sql_questions = "show global status like 'questions';"
sql_uptime = "show global status like 'uptime';"
sql_Com_rollback = "show global status like 'Com_rollback';"
sql_Com_commit = "show global status like 'Com_commit';"
if __name__ == '__main__':
    db_conn = Db(host, user, password, db)
    if sys.argv[1] == 'qps':
        result_qps = db_conn.getqps()
        print result_qps
    if sys.argv[1] == 'tps':
        result_tps = db_conn.gettps()
        print float(result_tps)