如何进行Prometheus-MySQL监控

如何进行Prometheus-MySQL监控，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。

简介

mysqld_exporter是用于获取mysql实例的指标服务。

安装

mysql授权

CREATE USER exporter@localhost identified by "mima"; GRANT PROCESS, REPLICATION CLIENT, SELECT ON *.* TO 'exporter'@'localhost' WITH MAX_USER_CONNECTIONS 3; flush privileges;

直接通过命令下载就可以了。

wget -t 1000 -c https://github.com/prometheus/mysqld_exporter/releases/download/v0.12.1/mysqld_exporter-0.12.1.linux-amd64.tar.gz tar zxvf  mysqld_exporter-0.12.1.linux-amd64.tar.gz -C /opt/ cd /opt/mysqld_exporter-0.12.1.linux-amd64 export DATA_SOURCE_NAME='exporter:mima@(localhost:3306)/' ./mysqld_exporter

这里设置用户名密码是通过环境变量的形式，也可以用配置文件，默认找的配置文件是~/.my.cnf，也可以使用参数--config.my-cnf="/opt/mysqld_exporter/.my.cnf" 进行设置。

./mysqld_exporter --config.my-cnf="/opt/mysqld_exporter/.my.cnf"

其他参数

usage: mysqld_exporter []  Flags:   -h, --help                   Show context-sensitive help (also try --help-long and --help-man).       --exporter.lock_wait_timeout=2                                  Set a lock_wait_timeout on the connection to avoid long metadata locking.       --exporter.log_slow_filter                                  Add a log_slow_filter to avoid slow query logging of scrapes. NOTE: Not supported by Oracle MySQL.       --collect.heartbeat.database="heartbeat"                                  Database from where to collect heartbeat data       --collect.heartbeat.table="heartbeat"                                  Table from where to collect heartbeat data       --collect.info_schema.processlist.min_time=0                                  Minimum time a thread must be in each state to be counted       --collect.info_schema.processlist.processes_by_user                                  Enable collecting the number of processes by user       --collect.info_schema.processlist.processes_by_host                                  Enable collecting the number of processes by host       --collect.info_schema.tables.databases="*"                                  The list of databases to collect table stats for, or '*' for all       --collect.mysql.user.privileges                                  Enable collecting user privileges from mysql.user       --collect.perf_schema.eventsstatements.limit=250                                  Limit the number of events statements digests by response time       --collect.perf_schema.eventsstatements.timelimit=86400                                  Limit how old the 'last_seen' events statements can be, in seconds       --collect.perf_schema.eventsstatements.digest_text_limit=120                                  Maximum length of the normalized statement text       --collect.perf_schema.file_instances.filter=".*"                                  RegEx file_name filter for performance_schema.file_summary_by_instance       --collect.perf_schema.file_instances.remove_prefix="/var/lib/mysql/"                                  Remove path prefix in performance_schema.file_summary_by_instance       --web.listen-address=":9104"                                  Address to listen on for web interface and telemetry.       --web.telemetry-path="/metrics"                                  Path under which to expose metrics.       --timeout-offset=0.25    Offset to subtract from timeout in seconds.       --config.my-cnf="/home/jalright/.my.cnf"                                  Path to .my.cnf file to read MySQL credentials from.       --collect.mysql.user     Collect data from mysql.user       --collect.info_schema.tables                                  Collect metrics from information_schema.tables       --collect.info_schema.innodb_tablespaces                                  Collect metrics from information_schema.innodb_sys_tablespaces       --collect.info_schema.innodb_metrics                                  Collect metrics from information_schema.innodb_metrics       --collect.global_status  Collect from SHOW GLOBAL STATUS       --collect.global_variables                                  Collect from SHOW GLOBAL VARIABLES       --collect.slave_status   Collect from SHOW SLAVE STATUS       --collect.info_schema.processlist                                  Collect current thread state counts from the information_schema.processlist       --collect.perf_schema.tablelocks                                  Collect metrics from performance_schema.table_lock_waits_summary_by_table       --collect.perf_schema.eventsstatements                                  Collect metrics from performance_schema.events_statements_summary_by_digest       --collect.perf_schema.eventsstatementssum                                  Collect metrics of grand sums from performance_schema.events_statements_summary_by_digest       --collect.perf_schema.eventswaits                                  Collect metrics from performance_schema.events_waits_summary_global_by_event_name       --collect.auto_increment.columns                                  Collect auto_increment columns and max values from information_schema       --collect.binlog_size    Collect the current size of all registered binlog files       --collect.perf_schema.tableiowaits                                  Collect metrics from performance_schema.table_io_waits_summary_by_table       --collect.perf_schema.indexiowaits                                  Collect metrics from performance_schema.table_io_waits_summary_by_index_usage       --collect.info_schema.userstats                                  If running with userstat=1, set to true to collect user statistics       --collect.info_schema.clientstats                                  If running with userstat=1, set to true to collect client statistics       --collect.info_schema.tablestats                                  If running with userstat=1, set to true to collect table statistics       --collect.info_schema.schemastats                                  If running with userstat=1, set to true to collect schema statistics       --collect.perf_schema.file_events                                  Collect metrics from performance_schema.file_summary_by_event_name       --collect.perf_schema.file_instances                                  Collect metrics from performance_schema.file_summary_by_instance       --collect.perf_schema.replication_group_member_stats                                  Collect metrics from performance_schema.replication_group_member_stats       --collect.perf_schema.replication_applier_status_by_worker                                  Collect metrics from performance_schema.replication_applier_status_by_worker       --collect.engine_innodb_status                                  Collect from SHOW ENGINE INNODB STATUS       --collect.heartbeat      Collect from heartbeat       --collect.slave_hosts    Scrape information from 'SHOW SLAVE HOSTS'       --collect.info_schema.innodb_cmp                                  Collect metrics from information_schema.innodb_cmp       --collect.info_schema.innodb_cmpmem                                  Collect metrics from information_schema.innodb_cmpmem       --collect.info_schema.query_response_time                                  Collect query response time distribution if query_response_time_stats is ON.       --collect.engine_tokudb_status                                  Collect from SHOW ENGINE TOKUDB STATUS       --log.level="info"       Only log messages with the given severity or above. Valid levels: [debug, info, warn, error, fatal]       --log.format="logger:stderr"                                  Set the log target and format. Example: "logger:syslog?appname=bob&local=7" or "logger:stdout?json=true"       --version                Show application version.

部署服务

直接注册成systemd服务。

```bash #!/bin/bash  VERSION="0.12.1"  wget  -t 100  -c  https://github.com/prometheus/mysqld_exporter/releases/download/v${VERSION}/mysqld_exporter-${VERSION}.linux-amd64.tar.gz  if [ ! -e mysqld_exporter-${VERSION}.linux-amd64.tar.gz ] then     echo "安装包下载失败"     exit 1 fi tar xvfz mysqld_exporter-${VERSION}.linux-amd64.tar.gz -C /opt/ cd /opt ln -s mysqld_exporter-${VERSION}.linux-amd64  mysqld_exporter cat > /etc/systemd/system/mysqld_exporter.service <
配置prometheus Job
默认端口是9104
- job_name: 'mysqld_exporter'    # metrics_path defaults to '/metrics'   # scheme defaults to 'http'.    static_configs:   - targets: ['localhost:9104']
指标展示
指标可以通过prometheus的WebUI进行查看
http://[promethe server ip]:9090
如果需要画图，可以直接使用grafana，有人已经配置好了图形可以通过grafana官方下的dashboard找到mysqld_exporter相关的dashboard就可以直接使用了，配置好prometheus数据源，直接导入grafana就可以直接展示了。
关于如何进行Prometheus-MySQL监控问题的解答就分享到这里了，希望以上内容可以对大家有一定的帮助，如果你还有很多疑惑没有解开，可以关注行业资讯频道了解更多相关知识。