2020-09-30 架构师第11周作业

▲单独架构的小伙伴看这里：（学习杰哥视频的作业第21-22天）

安装配置zabbix，并实现zabbix监控tomcat，nginx，memcached，redis等，并实现发生报警后发送邮件报警

一、安装配置zabbix

1 安装依赖包：

# yum install gcc libxml2-devel net-snmp net-snmp-devel curl curl-devel php php-bcmath php-mbstring mariadb mariadb-devel java-devel libevent-devel

2 准备数据库：

# mysql

 mysql> create database zabbix character set utf8 collate utf8_bin;

 Query OK, 1 row affected (0.00 sec)

 mysql>grant all privileges on zabbix.* to zabbix@"192.168.7.%" identified by '123456';

 Query OK, 0 rows affected (0.00 sec)

3 编译安装: 

# cd /usr/local/src/ 

# tar -xvf zabbix-4.0.24.tar.gz

# cd zabbix-4.0.24

# useradd zabbix -s /sbin/nologin

# ./configure --prefix=/usr/local/zabbix --enable-server --enable-agent --with-mysql --with-net-snmp --with-libcurl --with-libxml2 --enable-java

# make && make install

4 导入数据库：

# mysql -uzabbix -p123456 -h192.168.15.203 zabbix < database/mysql/schema.sql

# mysql -uzabbix -p123456 -h192.168.15.203 zabbix < database/mysql/images.sql

# mysql -uzabbix -p123456 -h192.168.15.203 zabbix < database/mysql/data.sql

5 复制启动脚本：

# cp /usr/local/src/zabbix-4.0.24/misc/init.d/fedora/core/zabbix_server /etc/init.d/

# cp /usr/local/src/zabbix-4.0.24/misc/init.d/fedora/core/zabbix_agentd /etc/init.d/

6 更改启动脚本：

# vim /etc/init.d/zabbix_server

# vim /etc/init.d/zabbix_agent

21 # Zabbix-Directory

22 BASEDIR=/usr/local/zabbix

7 编辑zabbix_server.con配置文件：

# mkdir -pv /var/log/zabbix

# chown zabbix.zabbix /var/log/zabbix -R

# vim /usr/local/zabbix/etc/zabbix_server.conf

 LogFile=/var/log/zabbix/zabbix_server.log

 DBHost=192.168.7.122

 DBName=zabbix

 DBUser=zabbix

 DBPassword=123456

 DBPort=3306

 Timeout=30

 LogSlowQueries=3000

# vim /etc/rc.d/rc.local

/usr/local/zabbix/sbin/zabbix_server  -c  /usr/local/zabbix/etc/zabbix_server.conf

/usr/local/zabbix/sbin/zabbix_agentd  -c  /usr/local/zabbix/etc/zabbix_agentd.conf

# chmod +x /etc/rc.d/rc.local

8 安装httpd： 

# yum install httpd -y 

# mkdir /var/www/html/zabbix

# cp -a /usr/local/src/zabbix-4.0.24/frontends/php/* /var/www/html/zabbix

# systemctl restart httpd

9 访问web

http://192.168.7.121/zabbix      会报错

10 解决报错：

# yum install php-gettext php-session php-ctype php-xmlreader php-xmlwriter php-xml php-net-socket php-gd php-mysql

# vim /etc/php.ini

 post_max_size = 16M

 max_execution_time = 300

 max_input_time = 300

 date.timezone = Asia/Shanghai

11 重启http再次访问web

# systemctl restart httpd

12 解决中文乱码

# cd /var/www/html/zabbix/assets/fonts/

将simkai.ttf 上传至该目录

# sed -i "s@DejaVuSans@simkai@g" /var/www/html/zabbix/include/defines.inc.php

二  Zabbix 监控 Tomcat    (Zabbix Server 与 Java gateway 安装在一台机器)

1 构建Tomcat客户端(7.123)

# yum install gcc libxml2-devel net-snmp net-snmp-devel curl curl-devel php php-bcmath php-mbstring mariadb-devel java-1.8.0-openjdk-devel -y

2 将二进制文件apache-tomcat-8.5.39.tar.gz 解压到 /apps/tomcat

# vim /apps/tomcat/bin/catalina.sh

CATALINA_OPTS="$CATALINA_OPTS

-Dcom.sun.management.jmxremote

-Dcom.sun.management.jmxremote.port=12345

-Dcom.sun.management.jmxremote.authenticate=false 

-Dcom.sun.management.jmxremote.ssl=false

-Djava.rmi.server.hostname=192.168.7.123"

3 安装Java gateway(7.121)

# vim /usr/local/zabbix/sbin/zabbix_java/settings.sh

LISTEN_IP="0.0.0.0"

LISTEN_PORT=10052

PID_FILE="/tmp/zabbix_java.pid"

START_POLLERS=20

TIMEOUT=30

#  /usr/local/zabbix/sbin/zabbix_java/startup.sh

#  vim /usr/local/zabbix/etc/zabbix_server.conf

JavaGateway=192.168.7.121

JavaGatewayPort=10052

StartJavaPollers=20

Timeout=30

3 Tomcat端安装zabbix agent (7.123)

# yum install gcc libxml2-devel net-snmp net-snmp-devel curl curl-devel php php-bcmath php-mbstring mariadb mariadb-devel java-devel libevent-devel

# tar xvf zabbix-4.0.1.tar.gz

# cd zabbix-4.0.1/

# ./configure --enable-agent --prefix=/usr/local/zabbix

# make && make install

# cp misc/init.d/fedora/core/zabbix_agentd /etc/init.d/ 

# vim /etc/init.d/zabbix_agentd

22 BASEDIR=/usr/local/zabbix

72 action $"Starting $BINARY_NAME: " $FULLPATH -c /usr/local/zabbix/etc/zabbix_agentd.conf

# useradd zabbix -s /sbin/nologin

# vim /usr/local/zabbix/etc/zabbix_agentd.conf

LogFile=/tmp/zabbix_agentd.log

DebugLevel=4

Server=192.168.7.121

Hostname=192.168.7.123         

# /usr/local/zabbix/sbin/zabbix_agentd -c /usr/local/zabbix/etc/zabbix_agentd.conf

# /etc/init.d/zabbix_agentd restart #脚本问题

22 BASEDIR=/usr/local/zabbix

72 action $"Starting $BINARY_NAME: " $FULLPATH -c /usr/local/zabbix/etc/zabbix_agentd.conf

# vim /etc/rc.d/rc.local

# /apps/apache-tomcat-8.5.39/bin/catalina.sh start

# /usr/local/zabbix/sbin/zabbix_agentd -c /usr/local/zabbix/etc/zabbix_agentd.conf

# chmod +x /etc/rc.d/rc.local

4 配置zabbix webUI对tomcat的监控

三 监控memcache

1 监控脚本内容：

#!/bin/bash

memcached_status(){

M_PORT=$1

M_COMMAND=$2

echo -e "stats\nquit" | nc 127.0.0.1 "$M_PORT" | grep "STAT $M_COMMAND " | awk '{print $3}'

} 

main(){

case $1 in

memcached_status)  memcached_status $2 $3

;;

esac

} 

main $1 $2 $3

2 测试脚本：

# bash memcache.sh memcached_status 11211 curr_connections

3 启动服务

# /etc/init.d/zabbix_agentd restart

4 WEB模式配置zabbix监控memcache

四 zabbix配置邮件报警

1 创建报警媒介类型(目的是指定发件人邮箱)

2 填写邮箱地址及邮箱服务器信息(以QQ邮箱为例)

3 创建zabbix用户指定(目的是指定收件人邮箱)，配置后，一定要点“更新”生效

4 定义动作(定义发送邮件的操作)

5 触发报警

6 停掉nginx服务，查看邮件是否发送成功