prometheus监控容器标签（Prometheus之使用process-exporter来监控服务进程）

process-exporter主要用来做进程监控，比如某个服务的进程数、消耗了多少CPU、内存、IO资源等。

1、process-exporter，可从github中搜索下载，process-exporter非官方出品，但能基本满足我们对进程监控的需求。

# wget https://github.com/ncabatoff/process-exporter/releases/download/v0.7.2/process-exporter-0.7.2.linux-amd64.tar.gz

# tar -xvf process-exporter-0.7.2.linux-amd64.tar.gz -C /usr/local/

# cd /usr/local/

# ln -s process-exporter-0.7.2.linux-amd64 process_exporter

# cd process_exporter

# ln -s process-exporter process_exporter

注：修改目录名，统一风格

2、创建配置文件，并添加要监控的进程

# cat /usr/local/process_exporter/config.yaml

process_names:

- name: "{{.Matches}}"

cmdline:

- '/usr/local/prometheus/prometheus'

- name: "{{.Matches}}"

cmdline:

- '/usr/local/alertmanager/alertmanager'

- name: "{{.Matches}}"

cmdline:

- '/usr/local/node_exporter/node_exporter'

- name: "{{.Matches}}"

cmdline:

- '/usr/bin/supervisord -c /etc/supervisord.conf'

3、使用systemd方式启动process_exporter

# cat > /lib/systemd/system/process_exporter.service <<EOF

[Unit]

Description=process-exporter

[Service]

ExecStart=/usr/local/process_exporter/process_exporter -config.path=/usr/local/process_exporter/config.yaml

Restart=on-failure

[Install]

WantedBy=multi-user.target

EOF

启动process_exporter服务，并设置开机自启动

# systemctl daemon-reload

# systemctl enable process_exporter

# systemctl start process_exporter

默认端口：9256

4、将process_exporter做为target添加到prometheus中并加载配置

# vim /usr/local/prometheus/prometheus.yml

- job_name: 'process_exporter'

static_configs:

- targets: ['monitor01:9256']

labels:

app: process_exporter

nodename: monitor01

role: process_exporter

然后使用supervisorctl命令update下配置即可

# supervisorctl -uadmin -p1235 update

5、在prometheus控制台进行查询验证。

namedprocess_namegroup_num_procs，用于进程数监控

例如：namedprocess_namegroup_num_procs{groupname=~".*prometheus.*"}

namedprocess_namegroup_cpu_seconds_total，进程所占CPU监控，包括system和user两类

例如：sum(rate(namedprocess_namegroup_cpu_seconds_total{groupname=~".*prometheus.*"}[2m]))

namedprocess_namegroup_memory_bytes，进程所常驻内存监控

例如：namedprocess_namegroup_memory_bytes{groupname=~".*prometheus.*", memtype="resident"}

namedprocess_namegroup_read_bytes_total，进程磁盘读

例如：rate(namedprocess_namegroup_read_bytes_total{groupname=~".*prometheus.*"}[2m])

namedprocess_namegroup_write_bytes_total，进程磁盘写

rate(namedprocess_namegroup_write_bytes_total{groupname=~".*prometheus.*"}[2m])

最后以进程数查询结果如下图所示：

使用Grafana展示效果

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