zabbix根据主机和端口列表自动发现监控远程MongoDB实例

在有些情况下，只能使用远程的MongoDB实例而不能登录到MongoDB实例所在的服务器上，这时可以在一台服务器上维护一个远程MongoDB实例的主机和端口列表，然后通过zabbix的低级发现功能去根据主机和端口自动添加相应的监控。

1. MongoDB主机和端口发现脚步mongodb_discovery.py

   主机和端口列表文件mongodb_servers.txt，文件中存放每个实例的主机，端口信息

   
   

10.4.9.112:28018:root:xxxx10.4.9.2:27017:root10.4.9.3:28018

#/usr/bin/python#This script is used to discovery disk on the serverimport subprocessimport jsonargs='''awk -F':' '{print $1":"$2}' /usr/local/zabbix/bin/mongodb_servers.txt'''t=subprocess.Popen(args,shell=True,stdout=subprocess.PIPE).communicate()[0]mongodbs=[]for mongo in t.split('\n'):    if len(mongo) != 0:       mongodbs.append({'{#MONGO_HOST}':mongo})print json.dumps({'data':mongodbs},indent=4,separators=(',',':'))

显示结果：

{    "data":[        {            "{#MONGO_HOST}":"192.168.5.7:30000"        },        {            "{#MONGO_HOST}":"192.168.5.7:30001"        },        {            "{#MONGO_HOST}":"192.168.5.23:30002"        },        {            "{#MONGO_HOST}":"192.168.5.23:30003"        }    ]}

2.获取MongoDB端口状态信息脚本discovery_mongodb_status.sh

这里会根据{#MONGO_HOST}传来的值在mongodb_servers.txt文件中找到相应的行，并以冒号 ":" 判断整行的长度，然后使用不同的mongodb连接方式

#This script is used to get discovered  mongodb servers status#echo "db.serverStatus().uptime"|mongo 192.168.5.23:30002/admin  -uroot -pxxxx#echo "db.serverStatus().mem.mapped"|mongo 192.168.5.23:30002/admin  -uroot -pxxx#echo "db.serverStatus().globalLock.activeClients.total"|mongo 192.168.5.23:30002/admin  -uroot -pxxx# Macro {#MONGO_INFO}  "HOSTNAME:PORT:USERNAME:PASSWORD"#sh discovery_mongodb_status.sh  uptime  {#MONGO_HOST} #sh discovery_mongodb_status.sh  mem mapped  {#MONGO_HOST} #sh discovery_mongodb_status.sh  globalLock activeClients total  {#MONGO_HOST} #one more parametermongo_info=""command_line=""function check_mongo_info() {    num=$(echo $mongo_info|awk -F":" '{print NF}')    host=$(echo $mongo_info|awk -F":" '{print $1}')    port=$(echo $mongo_info|awk -F":" '{print $2}')    username=$(echo $mongo_info|awk -F":" '{print $3}')    password=$(echo $mongo_info|awk -F":" '{print $4}')       case $num in     2)       command_line="/data/app_platform/mongodb/bin/mongo $host:$port/admin"       ;;     3)       command_line="/data/app_platform/mongodb/bin/mongo $host:$port/admin -u$username -p''"       ;;     4)       command_line="/data/app_platform/mongodb/bin/mongo $host:$port/admin -u$username -p$password"       ;;     esac                                        }case $# in  2)        mongo_info=$(grep $2 /usr/local/zabbix/bin/mongodb_servers.txt)    check_mongo_info     output=$(/bin/echo "db.serverStatus().$1" |$command_line|sed -n '3p')    ;;  3)    mongo_info=$(grep $3 /usr/local/zabbix/bin/mongodb_servers.txt)    check_mongo_info    output=$(/bin/echo "db.serverStatus().$1.$2" |$command_line|sed -n '3p')    ;;  4)    mongo_info=$(grep $4 /usr/local/zabbix/bin/mongodb_servers.txt)    check_mongo_info    output=$(/bin/echo "db.serverStatus().$1.$2.$3" |$command_line|sed -n '3p')    ;;esac#check if the output contains "NumberLong"if [[ "$output" =~ "NumberLong"   ]];then  echo $output|sed -n 's/NumberLong(//p'|sed -n 's/)//p'else   echo $outputfi

显示结果：

$sh discovery_mongodb_status.sh uptime 192.168.5.23:3000223823151$ sh discovery_mongodb_status.sh mem mapped 192.168.5.23:3000246691$ sh discovery_mongodb_status.sh globalLock activeClients total 192.168.5.23:300020

3.添加MongoDB自动发现的zabbix配置文件discovery_mongodb_status.conf

#echo "db.serverStatus().mem.mapped"|mongo admin --host xxxx --port xxx  -uroot -pxxxx#echo "db.serverStatus().mem.mapped"|mongo 10.4.9.112:28018/admin  -uroot -pxxxx#UserParameter=MongoDB.Status[*],/bin/echo "db.serverStatus().$1.$2" |/data/app_platform/mongodb/bin/mongo admin --port 28018|sed -n '3p'UserParameter=MongoDB.Discovery,/usr/bin/python /usr/local/zabbix/bin/mongodb_discovery.pyUserParameter=MongoDB.Discovery_Status[*],/usr/local/zabbix/bin/discovery_mongodb_status.sh $1 $2 $3 $4

模板参见附件