ZABBIX notes (ZABBIX installation, monitoring items, triggers, mail &vx alarms, secondary development, disk CPU for monitoring network traffic)

Posted by richie on Thu, 24 Feb 2022 16:55:24 +0100

Official Chinese documents
Zabbix user manual

catalogue

  • Solve the problem of no network after centos7 installation
  • Install MySQL
  • Installing zabbix
  • p3 common monitoring commands
  • Custom monitor
  • Custom trigger
  • Mail alarm
  • Modify email content
  • Vx alarm
  • Secondary development
    Customize menu
    Modify footer
    Replace logo
  • Monitor network traffic
  • Monitoring disk
  • Monitor CPU temperature

Solve the problem of no network after centos7 installation

cd /etc/sysconfig/network-scripts

vi ifcfg-ens33 (not necessarily 33)
Change ONBOOT=no to yes

systemctl restart network

Install MySQL

wget https://mirror.tuna.tsinghua.edu.cn/mysql/downloads/MySQL-5.7/mysql-5.7.35-1.el7.x86_64.rpm-bundle.tar --no-check-certificate

rpm -qa | grep mysql

Delete mariadb

rpm -qa | grep mariadb
rpm -e --nodeps mariadb

Create the extraction directory and extract it

mkdir mysql
tar xvf mysql-5.7.35-1.el7.x86_64.rpm-bundle.tar -C ./mysql

Decompress in sequence

rpm -ivh   community-common
rpm -ivh   community-libs
rpm -ivh   community-client
rpm -ivh   communityrp-server

(install and unzip mysql-community-libs-compat-5.7.37-1.el7.x86_64 to prevent bug s)

wget https://mirror.tuna.tsinghua.edu.cn/mysql/downloads/MySQL-5.7/mysql-community-libs-compat-5.7.37-1.el7.x86_64.rpm --no-check-certificate
rpm -ivh mysql-community-libs-compat-5.7.37-1.el7.x86_64.rpm

Start MySQL

systemctl start mysqld

View automatically generated passwords

cat /var/log/mysqld.log | grep password

Modify the configuration to change the password

vim /etc/my.cnf stay[mysql]Add next validate_password=off

Restart MySQL

systemctl restart mysqld

Sign in

mysql -uroot -p 
xxx
exit

Change Password
After logging in mysql

alter user 'root'@'localhost' identified by 'root';

Installing zabbix

1. System environment preparation
a. Turn off the firewall:

systemctl stop firewalld && systemctl disable firewalld

b. Close selinux

setenforce 0
vim /etc/selinux/config take enforcing Change to disabled

c. Restart

reboot

2. Install and configure zabbix
a. Install zabbix rpm source

rpm -Uvh https://mirrors.aliyun.com/zabbix/zabbix/4.0/rhel/7/x86_64/zabbix-release-4.0-2.el7.noarch.rpm 

yum clean all && yum makecache fast

b. Install zabbix server-side components and zabbix server and agent

yum install zabbix-server-mysql zabbix-agent -y

c. Installing the zabbix front end assembly

yum install centos-release-scl -y

d. Edit configuration file VI / etc / yum.com repos. d/zabbix. repo
Change enable under {ZABBIX fronted} to 1 (enabled)
e. Install zabbix front-end page, initial database, php and httpd components

yum install zabbix-server-mysql zabbix-web-mysql zabbix-agent

3. Install and configure MySQL
...

mysql> create database zabbix character set utf8 collate utf8_bin;
mysql> create user zabbix@localhost identified by 'root';
mysql> grant all privileges on zabbix.* to zabbix@localhost;
mysql> quit;

Import zabbix database. The user of zabbix database is zabbix and the password is password

zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz | mysql -uzabbix -p zabbix

4. zabbix configuration initialization
a. Modify zabbix server configuration file VI / etc / ZABBIX / ZABBIX_ server. Database password in conf

DBPassword=root

b. Configure time zone information

vi  /etc/httpd/conf.d/zabbix.conf
php_value date.timezone Asia/Shanghai

c. Configure font to avoid Chinese garbled code of foreground monitoring graphics

yum -y install wqy-microhei-fonts
cp /usr/share/fonts/wqy-microhei/wqy-microhei.ttc /usr/share/fonts/dejavu/DejaVuSans.ttf

d. Start the zabbix service and set the startup self startup

systemctl restart zabbix-server zabbix-agent httpd 
systemctl enable zabbix-server zabbix-agent httpd

Visit localhost/zabbix

5. Optimize configuration
//TODO

p3 common monitoring commands

free -m Monitor memory usage
df -h Monitoring hard disk
top
htop
uptime
iftop
iostat,
iotop
vmstat
netstat -antp|grep 80
nethogs
pkill -kill -t pts/2 Exit user

Custom monitor

1. Command line, manual value

iostat|awk '/sda/{print $2}'

2. Modify ZABBIX agent configuration file


 
Vim /etc/zabbix/zabbix_agentd.conf
Systemctl restart zabbix-agent.service

3. ZABBIX server test monitoring item value

4. Add custom monitoring items in the web interface

Custom trigger

{Zabbix server:system.users.num.last()}>3

{hostname: name of key. Function name (parameter)} comparison..


Mail alarm

1. Define sender

2. Addressee

3. Start action

Modify email content



Vx alarm

0. Enterprise wechat terminal settings
...
1. Realize the command line to send wechat information
a. Enter the directory: cd /usr/lib/zabbix/alertscripts
b. Create Weixin Py and zabbix_alter.sh two scripts:
weixin.py:

#!usr/bin/env python2
#-*- coding: utf-8 -*-
import requests
import sys
import os
import json
import logging
logging.basicConfig(level = logging.DEBUG, format = '%(asctime)s, %(filename)s, %(levelname)s, %(message)s',
datefmt = '%a, %d %b %Y %H:%M:%S',
filename = os.path.join('/tmp','weixin.log'),
filemode = 'a')
corpid='ww71b86ecf6a371a1a' ####Need modification
appsecret='JXliNS88GZtJyMC-NobFvKAYmEDuW6tgC4t1zX7mdu4' ####Need modification
agentid=1000002 ####Need modification
#Get accesstoken
token_url='https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=' + corpid + '&corpsecret=' + appsecret
req=requests.get(token_url)
accesstoken=req.json()['access_token']
#send message
msgsend_url='https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=' + accesstoken
touser=sys.argv[1]
subject=sys.argv[2]
#toparty='3|4|5|6'
message=sys.argv[2] + "\n\n" +sys.argv[3]
params={
"touser": touser,
# "toparty": toparty,
"msgtype": "text",
"agentid": agentid,
"text": {
"content": message
},
"safe":0
}
req=requests.post(msgsend_url, data=json.dumps(params))
logging.info('sendto:' + touser + ';;subject:' + subject + ';;message:' + message)

zabbix_alter.sh:

#!/bin/bash
python /usr/lib/zabbix/alertscripts/send_message.py "$1" "$2" "$3"

c. Increase execution authority

chmod +x zabbix_alter.sh
chmod +x weixin.py

d. Test run

./zabbix_alter.sh 'XiaoYi' 'xx' 'yy'

2. zabbix alarm settings
a. Set alarm media and sender

Script parameters:

{ALERT.SENDTO}
{ALERT.SUBJECT}
{ALERT.MESSAGE}

When pemission deny occurs during the test:

Cause analysis: zabbix user cannot operate the file of root user, so the permission is not enough
Solution: use the command RM - FR / TMP / Weixin Log delete Weixin Log, or change the group

b. Set recipient

c. Set action
. . .

Secondary development

Personalization reference

https://blog.51cto.com/u_11555417/2327073
https://blog.csdn.net/baidu_29679655/article/details/117413442

Customize menu

vim /usr/share/zabbix/include/menu.inc.php


],
                /**
                *Customize menu
                */
                'xiao'=>[
                        'label' => _('xiao'),
                        'user_type' => USER_TYPE_SUPER_ADMIN,
                        'default_page_id' => 0,
                        'pages' => [
                                [
                                        'url' => 'xiao/overview.html',
                                        'label' => _('xiao overview')
                                ]
                        ]
                ]

(xiao is changed to lowercase)

cd /usr/share/zabbix
mkdir xiao
cd xiao
vim overview.html
vim /usr/share/zabbix/js/main.js


Modify footer

Modify file

cd /usr/share/zabbix/include/classes/helpers/
vim CBrandHelper.php


(new CLink('LetusGoToBaidu---->','https://www.baidu.com'))
                                        ->addClass(ZBX_STYLE_GREY)
                                        ->addClass(ZBX_STYLE_LINK_ALT)
                                        ->setAttribute('target','_blank')
                                        ->setAttribute('style','text-decoration:none;')

Replace logo

svg online editor:

http://www.zuohaotu.com/svg/

cd /usr/share/zabbix/assets/img

Replace logo file: icon sprite svg
Backup first

cp icon-sprite.svg icon-sprite.svg.bak

Then modify icon sprite online on the website SVG, note that the size and position of the modified logo should be consistent with the original one

The above is the login interface logo
The following is the logo after login
The position of the picture above is x: 0, y: 864
The size of the picture above: width: 114, height: 30
The position of the following picture is x: 0, y: 903
The size of the following image: width: 95, height: 25
Finally, save and replace the original file

The final effect is as follows:



Monitor network traffic

The average load value of CPU in 1 minute, 5 minutes and 15 minutes shall not be greater than the number of CPUs

Create template

Create flow inflow monitoring item: Network incoming

Create flow outflow monitoring item: network outsourcing

Create a graph

Application template: configure the empty template created before, and assign the graphics just created to the empty template created before

Pressure test:

wget http://mirrors.aliyun.com/centos/7/isos/x86_64/CentOS-7-x86_64-DVD-2009.iso

Add trigger network incoming > 50K network outgoing > 50K

Monitoring disk

New template

Create a custom disk monitoring item


Configure trigger

Monitor CPU temperature

https://blog.51cto.com/jonathan/2068915

Topics: Linux Operation & Maintenance MySQL Zabbix

Hot Topics

©2024 Programmer Think