minemeld-engine FATAL Exited too quickly (process log may have details)

[IrekSw]

MINEMELD 0.9.44

2018-01-30T13:55:26 (4857)mgmtbus.checkpoint_graph INFO: checkpoint_graph called, checking current state
2018-01-30T13:55:26 (4857)mgmtbus.checkpoint_graph INFO: graph status None, checkpoint_graph ignored
Traceback (most recent call last):
File "/opt/minemeld/engine/current/bin/mm-run", line 11, in <module>
sys.exit(main())
File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/minemeld/run/launcher.py", line 284, in main
mbusmaster.wait_for_chassis(timeout=10)
File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/minemeld/mgmtbus.py", line 141, in wait_for_chassis
raise RuntimeError('Timeout waiting for chassis')
RuntimeError: Timeout waiting for chassis

[xhoms]

@IrekSw,

it might be a resources issue. How many node does your graph contains? How many CPU cores have to attached to the VM?

[IrekSw]

Hi,

I have 2 CPU, i can't login via www to minemeld and check numbers of nodes, there is another way to check the number of nodes?

[xhoms]

@IrekSw: The configuration should be at /opt/minemeld/local/config . You can grab the number of nodes from there.

[IrekSw]

If I count well, I have 99 nodes.

[xhoms]

@IrekSw: 99 nodes might be too much for a dual core system. I suggest you to add additional cores. MineMeld will take are of distributing the nodes between cores.

[IrekSw]

Is it possible to delete some mods without access via www?

[xhoms]

@IrekSw,

yes. Just edit /opt/minemeld/config/running-config.yml with your favorite YAML editor. Once it is ready, copy it over /opt/minemeld/config/committed-config.yml and then restart the engine.

[IrekSw]

Now minemeld-engin start but i can't login via www, i change password from the shell and still i have internal server error. 

[xhoms]

I'd try a service restart:

sudo service minemeld restart

If, after that, service is not running then I'd take a look to the web logs (/opt/minemeld/log/minemeld-web.log)

[IrekSw]

[2018-02-01 14:30:51 CET] [32343] [ERROR] Exception on /login [POST]
Traceback (most recent call last):
  File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/flask/app.py", line 1988, in wsgi_app
    response = self.full_dispatch_request()
  File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/flask/app.py", line 1634, in full_dispatch_request
    self.try_trigger_before_first_request_functions()
  File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/flask/app.py", line 1660, in try_trigger_before_first_request_functions
    func()
  File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/minemeld/flask/configapi.py", line 130, in _redlocked
    result = f(*args, **kwargs)
  File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/minemeld/flask/configapi.py", line 574, in _init_config
    _config_info(lock=False)
  File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/minemeld/flask/configapi.py", line 130, in _redlocked
    result = f(*args, **kwargs)
  File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/minemeld/flask/configapi.py", line 312, in _config_info
    version = SR.hget(REDIS_KEY_CONFIG, 'version')
  File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/redis/client.py", line 1857, in hget
    return self.execute_command('HGET', name, key)
  File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/redis/client.py", line 578, in execute_command
    connection.send_command(*args)
  File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/redis/connection.py", line 563, in send_command
    self.send_packed_command(self.pack_command(*args))
  File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/redis/connection.py", line 538, in send_packed_command
    self.connect()
  File "/opt/minemeld/engine/0.9.44/local/lib/python2.7/site-packages/redis/connection.py", line 442, in connect
    raise ConnectionError(self._error_message(e))
ConnectionError: Error 111 connecting to 127.0.0.1:6379. Connection refused.
[2018-02-01 14:30:51 CET] [32343] [DEBUG] redis connection pool: in use: 0 available: 1

[xhoms · Accepted solution]

@IrekSw,

MineMeld depends on a in-memory database called "Redis". In your system the "redis-server" service seems to be down.

Try:

sudo service redis-server stop
sudo service redis-server start

[IrekSw]

Thank you very much for quick answers and effective help !!!! Regards

[donetz.errasti]

Hi, 

After to add some new nodes, I've get ENGINE FATAL ERROR and i don't know how to resolve this error. I mean, I've deleted some nodes from running conf and copied it to commited file and nothing. The error is: 

[2019-12-09 12:27:01 UTC] [2641] [ERROR] Error retrieving childen of 0
Traceback (most recent call last):
File "/opt/minemeld/engine/core/minemeld/flask/supervisorapi.py", line 97, in service_status
ps = psutil.Process(pid=p['pid'])
File "/opt/minemeld/engine/current/local/lib/python2.7/site-packages/psutil/__init__.py", line 338, in __init__
self._init(pid)
File "/opt/minemeld/engine/current/local/lib/python2.7/site-packages/psutil/__init__.py", line 378, in _init
raise NoSuchProcess(pid, None, msg)
NoSuchProcess: psutil.NoSuchProcess no process found with pid 0

Please, help with this to keep working with Minemeld, because it's not the first time I reinstall the instance to keep working this this platform. 

Thanks