The tables and lists of questions have been created by Sridhar Rao <Sridhar.Rao@spirent.com>
Terminology Definition
| Term | What we mean by that? |
| Metric | A Measurement of a particular characteristic. Ex: %ge of CPU used, Amount of Bandwidth used, etc. Complete definition can be found here |
| Event | A record of something that has happened - A simple immutable fact. Example: Link has gone down. A packet from a flow is dropped, etc. Complete definition can be found here |
| Agent | Software that runs on a node/system that needs to be monitored. |
| Client Node | A node that is monitored (Node on which agent runs) |
| Server Node | A node that collects metrics and events from the client node. |
| Sampling Interval | How frequently the metrics are sent. |
| Push Mode | Fetching of events by subscribing |
| Poll Mode | Fetching of events via polling. |
| Writing of Metrics/events | sending/outputting of metrics or events. |
| Reading of Metrics/events | receiving/reading of measrements |
| Logging of Metrics/events | Logging of monitored/received metric or event |
| Metric Types (data source types) | Guage: Value stored as-is |
Parameter Table
Parameters\Tools | Collectd | Ceilometer | Monasca | statsd | node-exporter | sensu | munin | telegraf | nagios | diamond | centreon | icinga | OpenNMS | NSClient++ | Elastic Beats | Reimann | Note: 1. For some parameters the answer could be just YES/NO, 2. Whereas, for some we may have to provide a description/details 3. For some we may have to choose from the list [], whereas for some we may append a value to the list. 4. For some parameters, please provide the number of 'actual metrics' provided under that category. For example, collectd would provide 12 metrics for Processes-category Use NA - If Not applicable. Use NK - If it is Not Known | |
| Lowest Sampling Interval | 1 sec | |||||||||||||||||
| CPU metrics | ||||||||||||||||||
| Disk IO metrics | ||||||||||||||||||
| Memory metrics | ||||||||||||||||||
| Process metrics | ||||||||||||||||||
| Network Interface Metrics | Interface plugin: Standard 4 fields of rx/tx (octets, packets, errors, dropped). Netlink plugin: uses netlink sockets and covers others | |||||||||||||||||
| Libvirt Metrics | YES - | |||||||||||||||||
| Container resource usage Monitoring | YES | |||||||||||||||||
| Writing to Databases Support: [Influxdb, MongoDb, MySql, PostgreSql, Carbon(graphite), Prometheus, RRDCache,Redis, TSDB] | YES for all | |||||||||||||||||
| Encryption Support | YES | |||||||||||||||||
| Extensibility - multilanguage support [Python, Java, Golang, C/C++, Lua] | YES for all | |||||||||||||||||
| Interoperability [with other monitoring solutions] | Sensu, statsd, telegraf? | |||||||||||||||||
| Write to Message Queues (AMQP, Kafka ) | YES for ALL | |||||||||||||||||
| Metrics Pub/sub Mode Support | YES | |||||||||||||||||
| Metrics Res/Resp Mode Support | ||||||||||||||||||
| Support for Events (polling, Pushing) | ||||||||||||||||||
| Notification Support | YES | |||||||||||||||||
| Logging Support | YES | |||||||||||||||||
| Hypervisor metrics | ||||||||||||||||||
| Log-File Analysis | YES | |||||||||||||||||
| Other Writing Support: [CSV, HTTP, RRD, UnixSocket] | ||||||||||||||||||
| Transport Protocol | ||||||||||||||||||
| Data-Format [XML, JSON, etc] | JSON, Custom, XML | |||||||||||||||||
| Data-model | Custom | |||||||||||||||||
| Hardware: IPMI, Battery, Sensors, | YES for all | |||||||||||||||||
| Metric Types: Guage, Derive, Counter, absolute | YES for all | |||||||||||||||||
| Language (written) | C | |||||||||||||||||
| Last-Updated | ||||||||||||||||||
| Commercial Versions? | ||||||||||||||||||
| Resource consumption by the agent | ||||||||||||||||||
| License | ||||||||||||||||||
| Webserver monitoring [Nginix, Apache] | YES for all | |||||||||||||||||
| Platforms - OS? | ||||||||||||||||||
| Configuration Tool support [Puppet, Chef, Ansible, Salt] | ||||||||||||||||||
| Server-mode support? | YES | |||||||||||||||||
Inference Questions
| The Questions | The Answer |
| Lowest Interval: Which agent supports the lowest sampling interval, and what is the value? | |
| Interoperability: Which agent is 'most interoperable'? (Work with maximum of 'servers' (collection node) | |
| Large-scale deployment: Which agent is ideal for large-scale monitoring (Provide description in a separate page, if needed) | |
| Low-footprint: Which agent has the lowest footprint (memory and CPU)? | |
| Metrics: Which agent supports maximum number of metrics? | |
| Gaps: Are there any metrics that are not supported by any of the agent and that are relavant to NFV? | |
| Which agent is ideal for realtime analytics?- [Support for maximum scalable datastores, visualization tools and Analytics engines?] | |
| Is any of the agents been used in large-scale real-world deployments? If so, please provide the details on the performance. | |
| Which agent has the least/maximum dependency - Libraries, OS/Kernel versions, etc.? | |
| Which agent provides maximum 'freedom' w.r.t. Licenses (core agent + plugins)? | |
| Which agent is best for the following datastores: Influxdb, Graphite, ElasticSearch? | |
| Which agent support dynamic configuration? | |