Prometheus_client broken?

[Perkinje]

I'm getting an error when I try to use the prometheus exporter

$ glances --export prometheus
Traceback (most recent call last):
  File "/usr/local/bin/glances", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.9/dist-packages/glances/__init__.py", line 189, in main
    start(config=core.get_config(), args=core.get_args())
  File "/usr/local/lib/python3.9/dist-packages/glances/__init__.py", line 118, in start
    mode = GlancesMode(config=config, args=args)
  File "/usr/local/lib/python3.9/dist-packages/glances/standalone.py", line 53, in __init__
    self.stats = GlancesStats(config=config, args=args)
  File "/usr/local/lib/python3.9/dist-packages/glances/stats.py", line 49, in __init__
    self.load_modules(self.args)
  File "/usr/local/lib/python3.9/dist-packages/glances/stats.py", line 100, in load_modules
    self.load_exports(args=args)
  File "/usr/local/lib/python3.9/dist-packages/glances/stats.py", line 167, in load_exports
    export_module = __import__(self._exports_all[export_name])
  File "/usr/local/lib/python3.9/dist-packages/glances/exports/glances_prometheus.py", line 29, in <module>
    from prometheus_client import start_http_server, Gauge
ModuleNotFoundError: No module named 'prometheus_client'

When I tried to pip install the module, I get this error

$ pip install --user 'glances[prometheus_client]'
Requirement already satisfied: glances[prometheus_client] in /home/wpbacon/.local/lib/python3.9/site-packages (3.2.7)
WARNING: glances 3.2.7 does not provide the extra 'prometheus_client'
Requirement already satisfied: future in /usr/local/lib/python3.9/dist-packages (from glances[prometheus_client]) (0.18.2)
Requirement already satisfied: packaging in /usr/lib/python3/dist-packages (from glances[prometheus_client]) (20.9)
Requirement already satisfied: psutil>=5.3.0 in /home/wpbacon/.local/lib/python3.9/site-packages (from glances[prometheus_client]) (5.9.1)
Requirement already satisfied: defusedxml in /usr/lib/python3/dist-packages (from glances[prometheus_client]) (0.6.0)

If prometheus client isn't provided by glances, where do I get the client from? I'm running prometheus in a docker on the same system but I thought all the modules are pip installed. I also get a similar error with the mqtt exporter.

[nicolargo]

Hi @Perkinje

you have to install the Prometheus client lib:

pip install --user prometheus_client

As said in the documentation, this step can also be done by:

pip install --user glances[export]

Nicolas