Docker实战-部署GPE微服务的监控体系

科技 09-01 来源：程序员紫龙

Docker实战-部署GPE微服务的监控体系

前言

微服务体系架构里，有很多的解决方案都是使用GPE作为微服务体系的监控体系，如下图所示：

我们这里经常提到的GPE，包括Grafana，Promethues，Exporter三个部分，其中Grafana是一个功能强大的可自定义话的图形报表系统，Prometheus包括TSDB时序数据库和基于时序的查询系统，Exporter是数据采集的客户端系统。

图中非常详细的描述了GPE的数据流，通过exporter采集需要监控的节点，比如图中Linux主机，Mysql数据库，Redis服务器，prometheus从exporter获取采集数据，并把数据保存在prometheus的TSDB里， grafana里将prometheus作为数据源，通过定义图形报表的展示规则，通过Prometheus提供的查询语言，获取数据，在仪表盘里进行显示，最终就出现我们看到的图中的Dashboard的效果。 GPE具有非常好的扩展性和适用性，通过不同的Exporter客户端和自定义的Grafana的模板，可以进行很多中服务器或者节点的监控。今天我们这个文章，将的就是这个GPE体系的部署和搭建过程。使用Docker来作为演示过程的环境。

安装Grafana

获取镜像

[root@izwz9g3javh5eeean08tbtz ~]# docker image pull grafana/grafana

Using default tag: latest
latest: Pulling from grafana/grafana
97518928ae5f: Pull complete
5b58818b7f48: Pull complete
d9a64d9fd162: Pull complete
4e368e1b924c: Pull complete
867f7fdd92d9: Pull complete
387c55415012: Pull complete
07f94c8f51cd: Pull complete
ce8cf00ff6aa: Pull complete
e44858b5f948: Pull complete
4000fdbdd2a3: Pull complete
Digest: sha256:18d94ae734accd66bccf22daed7bdb20c6b99aa0f2c687eea3ce4275fe275062
Status: Downloaded newer image for grafana/grafana:latest
docker.io/grafana/grafana:latest

查看镜像

[root@izwz9g3javh5eeean08tbtz ~]# docker image ls

REPOSITORY TAG IMAGE ID CREATED SIZE
grafana/grafana latest 9b957e098315 5 weeks ago 275MB

建立数据卷

root@izwz9g3javh5eeean08tbtz ~]# mkdir /volume/grafana

启动Grafana

[root@izwz9g3javh5eeean08tbtz ~]# docker run \
-d \
-p 3000:3000 \
--name=grafana \
-v /volume/grafana:/var/lib/grafana \
grafana/grafana

修改为自启动

[root@izwz9g3javh5eeean08tbtz ~]# docker update --restart always grafana

查看容器

[root@izwz9g3javh5eeean08tbtz ~]# docker container ls | grep grafana

修改grafana的默认密码

[root@izwz9g3javh5eeean08tbtz ~]# docker container exec -it grafana /bin/sh

/usr/share/grafana $ cd /usr/share/grafana/bin
/usr/share/grafana/bin $ ./grafana-cli admin reset-admin-password admin1234567890

INFO[01-19|05:32:01] The state of unified alerting is still not defined. The decision will be made during as we run the database migrations logger=settings
WARN[01-19|05:32:01] falling back to legacy setting of 'min_interval_seconds'; please use the configuration option in the `unified_alerting` section if Grafana 8 alerts are enabled. logger=settings
INFO[01-19|05:32:01] Config loaded from logger=settings file=/usr/share/grafana/conf/defaults.ini
INFO[01-19|05:32:01] Config overridden from Environment variable logger=settings var="GF_PATHS_DATA=/var/lib/grafana"
INFO[01-19|05:32:01] Config overridden from Environment variable logger=settings var="GF_PATHS_LOGS=/var/log/grafana"
INFO[01-19|05:32:01] Config overridden from Environment variable logger=settings var="GF_PATHS_PLUGINS=/var/lib/grafana/plugins"
INFO[01-19|05:32:01] Config overridden from Environment variable logger=settings var="GF_PATHS_PROVISIONING=/etc/grafana/provisioning"
INFO[01-19|05:32:01] Path Home logger=settings path=/usr/share/grafana
INFO[01-19|05:32:01] Path Data logger=settings path=/var/lib/grafana
INFO[01-19|05:32:01] Path Logs logger=settings path=/var/log/grafana
INFO[01-19|05:32:01] Path Plugins logger=settings path=/var/lib/grafana/plugins
INFO[01-19|05:32:01] Path Provisioning logger=settings path=/etc/grafana/provisioning
INFO[01-19|05:32:01] App mode production logger=settings
INFO[01-19|05:32:01] Connecting to DB logger=sqlstore dbtype=sqlite3
INFO[01-19|05:32:01] Starting DB migrations logger=migrator
INFO[01-19|05:32:01] migrations completed logger=migrator performed=0 skipped=377 duration=956.396µs
Admin password changed successfully