Zabbix如何监控Nginx性能

简言

我们要用zabbix来获取nginx的状态首先我们的nginx要支持-with-http_stub_status_module模块。可以通过nginx -V来查看，如果没有配置需要我们平滑升级，这里不在描述。

如果有这个模块那么我们就开始启用nginx status配置在默认主机里面加上location或者你希望能访问到的主机里面。

步骤

1.首先我们在被监控端的服务器中nginx里面的server模块加入下面的内容

server{
server_name 0.0.0.0; 
    listen 12222;
    access_log off;
location /nginx_status {
                # Turn on nginx stats
                stub_status on;
                # I do not need logs for stats
                access_log off;
                # Security: Only allow access from 116.229.215.247
                #allow 116.229.215.247;
                allow all;
                # Send rest of the world to /dev/null
                #deny all;
                }
}

加入之后重新加载nginx配置文件，之后用浏览器访问

curl http://10.120.255.200/nginx_status

2.然后将下面的脚本上传至服务器目录，目录自己选择，下面的nginx-params中的路径要和这个保持一致

#!/bin/bash
##################################
# Zabbix monitoring script
#
# nginx:
#  - anything available via nginx stub-status module
#
##################################
# Contact:
#  vincent.viallet@gmail.com
##################################
# ChangeLog:
#  20100922     VV      initial creation
##################################

# Zabbix requested parameter
ZBX_REQ_DATA="$1"
ZBX_REQ_DATA_URL="$2"

# Nginx defaults
NGINX_STATUS_DEFAULT_URL="http://10.120.255.200:80/nginx_status"
WGET_BIN="/usr/bin/wget"

#
# Error handling:
#  - need to be displayable in Zabbix (avoid NOT_SUPPORTED)
#  - items need to be of type "float" (allow negative + float)
#
ERROR_NO_ACCESS_FILE="-0.9900"
ERROR_NO_ACCESS="-0.9901"
ERROR_WRONG_PARAM="-0.9902"
ERROR_DATA="-0.9903" # either can not connect / bad host / bad port

# Handle host and port if non-default
if [ ! -z "$ZBX_REQ_DATA_URL" ]; then
  URL="$ZBX_REQ_DATA_URL"
else
  URL="$NGINX_STATUS_DEFAULT_URL"
fi

# save the nginx stats in a variable for future parsing
NGINX_STATS=$($WGET_BIN -q $URL -O - 2> /dev/null)

# error during retrieve
if [ $? -ne 0 -o -z "$NGINX_STATS" ]; then
  echo $ERROR_DATA
  exit 1
fi

#
# Extract data from nginx stats
#
case $ZBX_REQ_DATA in
  active_connections)   echo "$NGINX_STATS" | head -1             | cut -f3 -d' ';;
  accepted_connections) echo "$NGINX_STATS" | grep -Ev '[a-zA-Z]' | cut -f2 -d' ';;
  handled_connections)  echo "$NGINX_STATS" | grep -Ev '[a-zA-Z]' | cut -f3 -d' ';;
  handled_requests)     echo "$NGINX_STATS" | grep -Ev '[a-zA-Z]' | cut -f4 -d' ';;
  reading)              echo "$NGINX_STATS" | tail -1             | cut -f2 -d' ';;
  writing)              echo "$NGINX_STATS" | tail -1             | cut -f4 -d' ';;
  waiting)              echo "$NGINX_STATS" | tail -1             | cut -f6 -d' ';;
  *) echo $ERROR_WRONG_PARAM; exit 1;;
esac

exit 0