• zabbix haproxy 监控


    摘自:

    http://www.tuicool.com/articles/JrYNNrm

    写的非常好,步步紧逼,环环相扣。直到成功!

    文章首发站点:OpensGalaxy

    这是一个HAProxy的zabbix监控模板,HAProxy提供高可用性、负载均衡以及基于TCP和HTTP应用的代理,支持虚拟主机,它是免费、快速并且可靠的一种解决方案。HAProxy本身提供一个web页面可以显示haproxy的各种信息,方便管理员查看系统状态等。此次我采用socat(socat是netcat的扩展实现)这款开源软件通过haproxy的socks配合zabbix实现haproxy系统的状态监控。

    一、安装socat

    [root@haproxy01 ~]# wget http://www.dest-unreach.org/socat/download/socat-1.7.3.0.tar.bz2
    [root@haproxy01 ~]# tar xzf socat-1.7.3.0.tar.gz
    [root@haproxy01 ~]# cd socat-1.7.3.0
    [root@haproxy01 ~]# ./configure
    [root@haproxy01 ~]# make
    [root@haproxy01 ~]# make install
    [root@haproxy01 ~]# which socat  ###安装完自动会在/usr/local/bin 创建执行程序。
    /usr/local/bin/socat

    二、开启haproxy sock

    编辑haproxy配置文件在global下添加如下:

    global
        stats socket    /usr/local/haproxy/haproxy.sock  
    
    # 重启haproxy

    Haproxy 信息

    [root@haproxy01 ~]# echo "show info" |socat /usr/local/haproxy/haproxy.sock stdio
    Name: HAProxy
    Version: 1.4.24
    Release_date: 2013/06/17
    Nbproc: 1
    Process_num: 1
    Pid: 3499
    Uptime: 2d 1h00m47s
    Uptime_sec: 176447
    Memmax_MB: 0
    Ulimit-n: 131102
    Maxsock: 131102
    Maxconn: 65535
    Maxpipes: 0
    CurrConns: 18
    PipesUsed: 0
    PipesFree: 0
    Tasks: 34
    Run_queue: 1
    node: HAProxy01
    description: haproxy server 01

    Haproxy 状态

    [root@CMHAProxy01 ~]# echo "show stat" |socat /usr/local/haproxy/haproxy.sock stdio
    # pxname,svname,qcur,qmax,scur,smax,slim,stot,bin,bout,dreq,dresp,ereq,econ,eresp,wretr,wredis,status,weight,act,bck,chkfail,chkdown,lastchg,downtime,qlimit,pid,iid,sid,throttle,lbtot,tracked,type,rate,rate_lim,rate_max,check_status,check_code,check_duration,hrsp_1xx,hrsp_2xx,hrsp_3xx,hrsp_4xx,hrsp_5xx,hrsp_other,hanafail,req_rate,req_rate_max,req_tot,cli_abrt,srv_abrt,admin_stats,FRONTEND,,,0,1,2000,2918,1779980,133971311,0,0,0,,,,,OPEN,,,,,,,,,1,1,0,,,,0,0,0,1,,,,0,2918,0,0,0,0,,0,1,2918,,,
    admin_stats,BACKEND,0,0,0,0,2000,0,1779980,133971311,0,0,,0,0,0,0,UP,0,0,0,,0,176433,0,,1,1,0,,0,,1,0,,0,,,,0,0,0,0,0,0,,,,,0,0,
    test,FRONTEND,,,0,2,2000,5402,1267880,26563174,0,0,0,,,,,OPEN,,,,,,,,,1,2,0,,,,0,0,0,3,,,,0,5402,0,0,0,0,,0,3,5402,,,
    test,test1,0,0,0,1,,2701,632860,13110551,,0,,0,0,0,0,UP,3,1,0,1,0,176433,0,,1,2,1,,2701,,2,0,,2,L7OK,200,3,0,2701,0,0,0,0,0,,,,0,1,
    test,test2,0,0,0,1,,2701,635020,13452623,,0,,0,0,0,0,UP,3,1,0,0,0,176433,0,,1,2,2,,2700,,2,0,,2,L7OK,200,3,0,2701,0,0,0,0,0,,,,0,0,
    test,BACKEND,0,0,0,2,2000,5402,1267880,26563174,0,0,,0,0,0,0,UP,6,2,0,,0,176433,0,,1,2,0,,5401,,1,0,,3,,,,0,5402,0,0,0,0,,,,,0,1,

    看到这里大家都明白了,我们可以通过“show stat”返回的信息,过滤出我们想要得到的监控字段数据。这里我们主要取qcur(queue数量)、scur(session数量)、bin(入站流量)、bout(出站流量)、status(后端服务器状态)、downtime(宕机总时长)、check_status(健康检测状态),自定义key收集这些数据制作相应的item,如果你想监控更多信息可以取更多的字段数据。

    大家看到这些字段数据使用”,”分隔,非常方便我们用awk来过滤数据,具体自定义key见代码。首先,我们需要建立一个HAProxy模版,然后建立发现规则,来发现这些后端服务器,这样每次haproxy添加服务的时候,zabbix就会自动发现这些后端服务器、自动建立item、自动建立Graph、自动建立Trigger,一切全部自动完成。

    三、Step by Step

    1、建立一个haproxy模版

    2、建立发现规则

    key shell如下:(这里有一点需要注意,就是haproxy.sock这个文件的权限问题,默认是644,单纯执行这个shell没问题,但如果需要zabbix用户去获取返回值的时候就会提示权限不足,所以我直接将haproxy.sock设置成了666,也可以设置visudo,我为了方便直接修改了这个文件权限)

    [root@haproxy01 ~]# cat /usr/bin/has.discovery.sh 
    #!/bin/bash 
    export PATH=/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
    printf  '{
    '
    printf  '	"data":[
    '
    export LINE=$(echo "show stat" |socat /usr/local/haproxy/haproxy.sock stdio|grep -v "^#"|grep -v "^admin_stats"|awk -F "," '{print $2}'|grep -v "^FRONTEND"|grep -v "^BACKEND"|grep -v "^$"|wc -l)  ##(这里我过滤调admin_stats web管理台、FRONTEND前端、BACKEND后端 得到的是所有后端服务器的列表)
    export N=0
    #printf  '		{
    '
    for i in $(echo "show stat" |socat /usr/local/haproxy/haproxy.sock stdio|grep -v "^#"|grep -v "^admin_stats"|awk -F "," '{print $2}'|grep -v "^FRONTEND"|grep -v "^BACKEND");
            do printf "			{"{#SNAME}":"$i"}";
        N=$(($N+1))
        if [ $N -eq $LINE ];  ## 最后一行是不能加","的,所以需要if判断一下是否到了最后一行。
        then
                printf '
    '
        else
            printf ',
    '
        fi
        done;
    printf ']}
    '

    执行结果如下:(zabbix的发现规则就是要返回json格式的数据)

    [root@haproxy01 haproxy]# sh /usr/bin/has.discovery.sh 
    {
        "data":[
                {"{#SNAME}":"test1"},
                {"{#SNAME}":"test2"},
                {"{#SNAME}":"testapi1"},
                {"{#SNAME}":"test51"},
                {"{#SNAME}":"test52"},
                {"{#SNAME}":"testclient1"},
                {"{#SNAME}":"testclient2"},
                {"{#SNAME}":"testmobile1"},
                {"{#SNAME}":"testmobile2"}
    
    ]}

    3、建立自定义key

    + Queue数量[qcur]

    key shell如下:

    [root@haproxy01 haproxy]# cat /usr/bin/ckey.ha.queue.sh 
    #!/bin/bash
    export PATH=/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
    
    echo "show stat" |socat /usr/local/haproxy/haproxy.sock stdio|grep "<$1>"|grep -v "^FRONTEND"|grep -v "^BACKEND"|awk -F "," '{print $3}'  ## 重点就是通过awk取哪个字段的数据

    + Session数量[scur]

    [root@haproxy01 haproxy]# cat /usr/bin/ckey.ha.session.sh 
    #!/bin/bash
    export PATH=/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
    
    echo "show stat" |socat /usr/local/haproxy/haproxy.sock stdio|grep "<$1>"|grep -v "^FRONTEND"|grep -v "^BACKEND"|awk -F "," '{print $5}'

    + 虚拟服务器入站流量[bin]

    [root@haproxy01 haproxy]# cat /usr/bin/ckey.ha.bin.sh 
    #!/bin/bash
    export PATH=/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
    
    echo "show stat" |socat /usr/local/haproxy/haproxy.sock stdio|grep "<$1>"|grep -v "^FRONTEND"|grep -v "^BACKEND"|awk -F "," '{print $9}'

    + 虚拟服务器出站流量[bout]

    [root@haproxy01 haproxy]# cat /usr/bin/ckey.ha.bout.sh 
    #!/bin/bash
    export PATH=/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
    
    echo "show stat" |socat /usr/local/haproxy/haproxy.sock stdio|grep "<$1>"|grep -v "^FRONTEND"|grep -v "^BACKEND"|awk -F "," '{print $10}'

    + 后端服务器状态[status]

    [root@haproxy01 haproxy]# cat /usr/bin/ckey.ha.status.sh 
    #!/bin/bash
    export PATH=/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
    
    echo "show stat" |socat /usr/local/haproxy/haproxy.sock stdio|grep "<$1>"|grep -v "^FRONTEND"|grep -v "^BACKEND"|awk -F "," '{print $18}'

    + 宕机总时长[downtime]

    [root@haproxy01 haproxy]# cat /usr/bin/ckey.ha.downtime.sh 
    #!/bin/bash
    export PATH=/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
    
    echo "show stat" |socat /usr/local/haproxy/haproxy.sock stdio|grep "<$1>"|grep -v "^FRONTEND"|grep -v "^BACKEND"|awk -F "," '{print $25}'

    + 健康检测状态[check_status]

    [root@haproxy01 haproxy]# cat /usr/bin/ckey.ha.lastchk.sh 
    #!/bin/bash
    export PATH=/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
    
    echo "show stat" |socat /usr/local/haproxy/haproxy.sock stdio|grep "<$1>"|grep -v "^FRONTEND"|grep -v "^BACKEND"|awk -F "," '{print $38}'

    + 定义key

    [root@haproxy01 haproxy]# cat /etc/zabbix/zabbix_agentd.d/HaProxy_status.conf 
    UserParameter=has.discovery,/usr/bin/has.discovery.sh
    UserParameter=ckey.ha.bin[*],/usr/bin/ckey.ha.bin.sh $1
    UserParameter=ckey.ha.bout[*],/usr/bin/ckey.ha.bout.sh $1
    UserParameter=ckey.ha.downtime[*],/usr/bin/ckey.ha.downtime.sh $1
    UserParameter=ckey.ha.lastchk[*],/usr/bin/ckey.ha.lastchk.sh $1
    UserParameter=ckey.ha.queue[*],/usr/bin/ckey.ha.queue.sh $1
    UserParameter=ckey.ha.session[*],/usr/bin/ckey.ha.session.sh $1
    UserParameter=ckey.ha.status[*],/usr/bin/ckey.ha.status.sh $1

    重启zabbix-agent

    + 验证一下:

    [root@zabbixproxy01 ~]# zabbix_get -s 192.168.1.100 -k has.discovery
    {
        "data":[
                {"{#SNAME}":"test1"},
                {"{#SNAME}":"test2"},
                {"{#SNAME}":"testapi1"},
                {"{#SNAME}":"test51"},
                {"{#SNAME}":"test52"},
                {"{#SNAME}":"testclient1"},
                {"{#SNAME}":"testclient2"},
                {"{#SNAME}":"testmobile1"},
                {"{#SNAME}":"testmobile2"}
    
    ]}
    
    [root@zabbixproxy01 ~]# zabbix_get -s 192.168.1.100 -k ckey.ha.status[test1]
    UP

    其余的key验证效果大同小异,这里就不浪费篇幅一一列举了。

    4、创建Graph prototypes

    + 网络流量图

    + Session

    + 健康检测状态

    + 宕机总时间

    生成的Graphs效果图

    5、创建Trigger prototypes

    + inbound网络流量最近5分钟内超过2Mbps

    + outbound网络流量最近5分钟内超过2Mbps

    + 后端服务器健康检测异常

    + 后端服务器宕机

    这里设置一下依赖,因为服务器是否宕机依赖于健康检测状态

    到此为止,全套的Haproxy监控模版就设置完成了,你可以根据你实际的需求做调整,总之这只是一个实现思路。

    key shell和导出的模版下载地址如下:

    自定义key shell

    导出的haproxy模版

    大家也可以访问我的github https://github.com/EdisonWujr/zabbix-templates

    在尝试学习新的语言之前先理解这门语言的设计原理能够让你在探索这门新语言时保持一个清醒而且开发的状态。
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  • 原文地址:https://www.cnblogs.com/jackchen001/p/6913643.html
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