20: zabbix监控java jvm原理
tomcat weblogic jboss resin
tomcat：
开启监控接口
#安装tomcat
rpm -ivh jdk-8u102-linux-x64.rpm
mkdir /app
tar xf apache-tomcat-8.0.27.tar.gz -C /app/
/app/apache-tomcat-8.0.27/bin/startup.sh
#增加一行
vim /app/apache-tomcat-8.0.27/bin/catalina.sh
CATALINA_OPTS="$CATALINA_OPTS -
Dcom.sun.management.jmxremote -
Djava.rmi.server.hostname=10.0.0.8 -
Dcom.sun.management.jmxremote.port=12345 -
Dcom.sun.management.jmxremote.ssl=false -
Dcom.sun.management.jmxremote.authenticate=false"
#重启生效
/app/apache-tomcat-8.0.27/bin/shutdown.sh
/app/apache-tomcat-8.0.27/bin/startup.sh
#检验
[root@web01 opt]# netstat -lntup|grep 12345
tcp6 0 0 :::12345 :::*
LISTEN 100141/java
安装zabbix-java-gateway来监控jvm
yum install zabbix-java-gateway.x86_64 -y
systemctl start zabbix-java-gateway.service
systemctl enable zabbix-java-gateway.service
修改zabbix-server的配置文件
vim /etc/zabbix/zabbix_server.conf
JavaGateway=127.0.0.1
JavaGatewayPort=10052
StartJavaPollers=3
systemctl restart zabbix-server.service
添加监控
21: zabbix性能优化
性能不足的时候：经常出现误报，断图，还有其他报警
优化：
数据库优化：业务类型 写多读少
存储引擎：innodb --> tokudb
版本 mariadb 5.5 --> mysql 5.7
存储：机械硬盘--->固态硬盘
去掉无用的监控项
增加取值间隔，建议60s
减少数据的保留周期，重要监控项保留90d,其他的一律3d
mysql的分区和分表
zabbix-server服务优化
进程数
缓存大小
22: zabbix低级自动发现
新增一个监控项原型
增加一个UserParameter=xxxx[*],cmd $1
监控每块网卡的mac地址
[root@web01 zabbix_agent2.d]# cat zbx_net.conf
UserParameter=net_mac[*],ifconfig $1|awk '/ether/{print $$2}'
[root@zabbix-server ~]# zabbix_get -s 10.0.0.8 -k net_mac[eth1]
00:0c:29:2e:16:18
通过低级自动发现监控mysql多实例
准备环境mysql多实例
cp /etc/my.cnf /etc/my3307.cnf
vim /etc/my3307.cnf
[mysqld]
datadir=/data/3307/
socket=/data/3307/mysql.sock
port=3307
user=mysql
symbolic-links=0
[mysqld_safe]
log-error=/data/3307/mysqld.log
pid-file=/data/3307/mysqld.pid
sed '/^$/d' /etc/my3307.cnf
sed -i '/^$/d' /etc/my3307.cnf
cp /etc/my3307.cnf /etc/my3308.cnf
sed -i 's#3307#3308#g' /etc/my3308.cnf
cat /etc/my3308.cnf
mysql_install_db --user=mysql --defaultsfile=/etc/my3307.cnf
mysql_install_db --user=mysql --defaultsfile=/etc/my3308.cnf
mysqld_safe --defaults-file=/etc/my3307.cnf &
mysqld_safe --defaults-file=/etc/my3308.cnf &
mysqladmin -uroot -h 127.0.0.1 -P 3307 password
'123456'
mysql -uroot -p123456 -h 127.0.0.1 -P 3307
mysqladmin -uroot -h 127.0.0.1 -P 3308 password
'123456'
mysql -uroot -p123456 -h 127.0.0.1 -P 3308
创建低级自动发现规则
#自定义规则的监控项
vim /etc/zabbix/zabbix_agent2.d/zbx_mysql.conf
UserParameter=mysql.port.discovery,/bin/bash
/server/scripts/mysql_port_discovery.sh
#脚本
vim /server/scripts/mysql_port_discovery.sh
#!/bin/bash
#mysql low-level discovery
res=`netstat -lntp|awk -F "[ :\t]+" '/mysqld/{print$5}'`
port=($res)
printf '['
for key in ${!port[@]}
do
if [[ "${#port[@]}" -gt 1 && "${key}" -ne "$((${#port[@]}-1))" ]];then
printf '{'
printf "\"{#MYSQLPORT}\":\"${port[${key}]}\"},"
else [[ "${key}" -eq "((${#port[@]}-1))" ]]
printf '{'
printf "\"{#MYSQLPORT}\":\"${port[${key}]}\"}"
fi
done
printf ']\n'
#重启
systemctl restart zabbix-agent2.service
#测试
[root@zabbix-server ~]# zabbix_get -s 10.0.0.8 -kmysql.port.discovery
[{
"{#MYSQLPORT}":"3306"},{
"{#MYSQLPORT}":"3307"},{
"{#MYSQLPORT}":"3308"}]
创建监控项原型
vim zbx_mysql.conf
UserParameter=mysql_alive[*],mysqladmin -uroot -p123456 -h 127.0.0.1 -P $1 ping 2>/dev/null|grep -c alive
#测试
[root@zabbix-server ~]# zabbix_get -s 10.0.0.8 -k mysql_alive[3307]
1
23: zabbix api
api：应用程序接口
什么是调用api
怎么调用api，发起一个http请求
curl "http://apis.juhe.cn/simpleWeather/query?city=昌平&key=3dae6629acd8689e9b12f8bb4f"
{
"reason":"查询成功!","result":{
"city":"昌平","realtime":
{
"temperature":"13","humidity":"15","info":"晴","wid":"
00","direct":"西风","power":"2级","aqi":"67"},"future":
[{
"date":"2021-02-
05","temperature":"1\/13℃","weather":"晴","wid":
{
"day":"00","night":"00"},"direct":"西风转西北风"},
{
"date":"2021-02-
06","temperature":"-3\/13℃","weather":"多云","wid":
{
"day":"01","night":"01"},"direct":"西北风转南风"},
{
"date":"2021-02-
07","temperature":"-5\/5℃","weather":"晴","wid":
{
"day":"00","night":"00"},"direct":"东南风转北风"},
{
"date":"2021-02-
08","temperature":"-5\/5℃","weather":"多云转晴","wid":
{
"day":"01","night":"00"},"direct":"东南风转西北风"},
{
"date":"2021-02-
09","temperature":"-3\/9℃","weather":"多云转晴","wid":
{
"day":"01","night":"00"},"direct":"东南风转西北
风"}]},"error_code":0}
调用zabbix-api
获取token
curl -X POST -H 'Content-Type:application/json-rpc' -d
'
{
"jsonrpc": "2.0",
"method": "user.login",
"params": {
"user": "Admin",
"password": "zabbix"
},
"id": 1,
"auth": null
}' http://10.0.0.71/api_jsonrpc.php
返回结果;
{
"jsonrpc":"2.0","result":"6d33c0a88b0d55d7860eea70005
c5b5b","id":1}
token='6d33c0a88b0d55d7860eea70005c5b5b'
删除主机
curl -X POST -H 'Content-Type:application/json-rpc' -d
'
{
"jsonrpc": "2.0",
"method": "host.delete",
"params": [
10372
],
"auth": "'$token'",
"id": 1
}' http://10.0.0.71/api_jsonrpc.php
返回结果
{
"jsonrpc":"2.0","result":{
"hostids":[10372]},"id":1}
创建主机
curl -X POST -H 'Content-Type:application/json-rpc' -d
'
{
"jsonrpc": "2.0",
"method": "host.create",
"params": {
"host": "10.0.0.8",
"interfaces": [
{
"type": 1,
"main": 1,
"useip": 1,
"ip": "10.0.0.8",
"dns": "",
"port": "10050"
}
],
"groups": [
{
"groupid": "17"
}
],
"templates": [
{
"templateid": "10357"
}
]
},
"auth": "'$token'",
"id": 1
}' http://10.0.0.71/api_jsonrpc.php
返回结果：
{
"jsonrpc":"2.0","result":{
"hostids":["10377"]},"id":1}
批量创建主机
[root@web01 ~]# cat piliang_create_host.sh
#!/bin/bash
token='6d33c0a88b0d55d7860eea70005c5b5b'
for n in `echo 10.0.0.{
50..100}`
do
curl -X POST -H 'Content-Type:application/json-rpc' -d
'
{
"jsonrpc": "2.0",
"method": "host.create",
"params": {
"host": "'$n'",
"interfaces": [
{
"type": 1,
"main": 1,
"useip": 1,
"ip": "10.0.0.8",
"dns": "",
"port": "10050"
}
],
"groups": [
{
"groupid": "17"
}
],
"templates": [
{
"templateid": "10357"
}
]
},
"auth": "'$token'",
"id": 1
}' http://10.0.0.71/api_jsonrpc.php
done