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| 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 measrementsmeasurements |
| Logging of Metrics/events | Logging of monitored/received metric or event |
| Metric Types (data source types) | Guage: Value stored as-is |
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Parameters\Tools | Collectd | Ceilometer Polling agent. | Monasca | SNAP | node-exporter and other exporters | sensu client: metric collection plugins | munin | telegraf | NPRE + Plugins | 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 - (for transmitting over network) | can go down to a nano second resolution (1-sec) | ||||||||||||||||||||||||||||||||
| CPU metrics | idle, system, wait, stolen, user (% & time), util, vcpus | idle, system, wait, stolen, user (% & time), util, vcpus | idle, system, wait, stolen, user (% & time) | idle, system, wait, stolen, user (% & time), util, vcpus | idle, system, wait, stolen, user (% & time), util, vcpus | Same as ceilometer or monasca | idle, system, wait, user, nice | ||||||||||||||||||||||||||
| Disk IO metrics | Read and write (bytes, rate, time, sectors) | read and write (bytes, rate, req) | read and write (bytes, rate, req) | read and write (bytes, rate, req) | Read and write (bytes, rate, time, sectors) | Same as ceilometer or monasca | read and write (bytes, rate, req) | ||||||||||||||||||||||||||
| Memory metrics | usage, bandwidth | free, swap, total, used | free, swap, total, used | free, swap, total, used (Mb and percentages) | Same as ceilometer or monasca | free, total, swap, active, dirty, inactive, buffers. | |||||||||||||||||||||||||||
| Process metrics | I/O, memory, CPU-Usage, count. | NO | NO | Same as collectd. | status, thread-count, uptime. IO, memory, cpu-usage. connections. | btime, ctxt, processes, blocked, running | |||||||||||||||||||||||||||
| Network Interface Metrics | Interface plugin: Standard 4 fields of rx/tx (octets, packets, errors, dropped). Netlink plugin: uses netlink sockets and covers others | Standard 4 fields of rx/tx (octets, packets, errors, dropped). | Standard 4 fields of rx/tx (octets, packets, errors, dropped). | Standard 4 fields of rx/tx (octets, packets, errors, dropped). | Standard 4 fields of rx/tx (octets, packets, errors, dropped). Also includes, fifo, compressed, and frame stats. | Same as ceilometer or monasca | Rx and Tx. MBs | ||||||||||||||||||||||||||
| Libvirt Metrics | YES - | YES | YES | YES | NO | NO | YES | ||||||||||||||||||||||||||
| Container resource usage Monitoring | YES | NO | NO | Docker | Docker | Docker | Docker | ||||||||||||||||||||||||||
| Databases Monitoring : [Influxdb, MongoDb, MySql, PostgreSql, Carbon(graphite), Prometheus, RRDCache,Redis, TSDB] | YES for all | MySql, PostgreSql, MongoDb | Influxdb, Vertica, MySql, PostgreSql, Cassandra | ALL (4) | All | All. | All | Encryption Support | YES | NO | NO|||||||||||||||||||||||
| Publish metrics to databases - (influxdb, mysql, TSDB, Postgresql, MongoDb, Carbon, Elasticsearch) | YES for all | ? | ? | NO | NO | YES | Extensibility - multilanguage support [Python, Java, Golang | ||||||||||||||||||||||||||
| Encryption Support | YES | NO | NO | NO | NO | YES | |||||||||||||||||||||||||||
| Extensibility - multilanguage support [Python, Java, Golang, C/C++, Lua] | YES for all | Java | Java | Java, Python, Ruby | Go, Python. | ||||||||||||||||||||||||||||
| Interoperability [with other monitoring solutions] | Sensu, statsd, telegraf? | Nagios zabbix | ceilometer | Collectd | Nagios, Zabbix. | Nagios | |||||||||||||||||||||||||||
| Write to Message Queues and protocols (AMQP, Kafka, MQTT, NSQ) | YES for ALL | AMQP | Kafka | NO | AMQP | kafka, MQTT, NSQ | |||||||||||||||||||||||||||
Metrics Pub/sub Mode Support (Metrics push/pull mode support ?) | YES | YES | YES | YES | YES | ||||||||||||||||||||||||||||
| Metrics Req/Resp Mode Support | NO | NO | NO | NO | YES | ||||||||||||||||||||||||||||
| Support for Events (polling, Pushing) | Yes | NO (1) | NO (1) | NO | YES | ||||||||||||||||||||||||||||
| Notification Support | YES | NO (1) | NO (1) | NO (1) | YES | ||||||||||||||||||||||||||||
| Logging Support | YES | YES | YES | YES | YES | ||||||||||||||||||||||||||||
| Hypervisor metrics | YES | NO | NO | YES | YES (XenTop) | ||||||||||||||||||||||||||||
| Log-File Analysis | YES | NO | NO | YES (mtail) | NO | ||||||||||||||||||||||||||||
| Other Writing Support: [CSV, HTTP, RRD, UnixSocket] | ALL that are listed. | NO | NO | HTTP | NO | ||||||||||||||||||||||||||||
| Transport Protocol | Depends on the end point it's communicating with. | TCP* | TCP* | TCP | TCP, UDP | ||||||||||||||||||||||||||||
| Data-Format [XML, JSON, etc] | JSON, Custom, XML | JSON XML | JSON | JSON ? | JSON | Custom | |||||||||||||||||||||||||||
| Data-model | Custom | KVP | KVP | KVP | KVP | Custom | |||||||||||||||||||||||||||
| Hardware: IPMI, Battery, Sensors, | YES for all | IPMI | IPMI | YES for all | YES - IPMI | ||||||||||||||||||||||||||||
| Metric Types: Guage, Derive, Counter, absolute | YES for all | Guage cumulative delta | Guage, Counter, Histogram, summary | ||||||||||||||||||||||||||||||
| Language (written) | C | Python | Python | Go | Ruby | Go | |||||||||||||||||||||||||||
| Last-Updated | 2017 | 2017 | 2017 | Varies (5) | Varies (5) | ||||||||||||||||||||||||||||
| Commercial Versions? | NO | NO | ? | NO | YES | No | |||||||||||||||||||||||||||
| Resource consumption by the agent | Binary: 617Kb
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| License | MIT/GPL v2 or later | Apache License, Version 2.0 | Apache License, Version 2.0 | Multiple (5) | MIT | ||||||||||||||||||||||||||||
| Webserver monitoring [Nginix, Apache] | YES for all | Apache | Apache | Nginix, Apache, Passenger varnish | Apache, Nginix, Unicorn. | ||||||||||||||||||||||||||||
| Platforms - OS? | Supports windows, linux, freebsd, etc. | Linux | Linux | Unix Windows(3) | Linux, Windows, | ||||||||||||||||||||||||||||
| Configuration Tool support [Puppet, Chef, Ansible, Salt] | YES for all | Puppet Chef | Puppet, Chef, Ansible, | Yes for all. | YES for all | ||||||||||||||||||||||||||||
| Deployments: servers, VMs, containers, | ALL | ALL | ALL | ALL | ALL. | ||||||||||||||||||||||||||||
| Openstack Modules | NO | Neutron, Nova | |||||||||||||||||||||||||||||||
| Intel PCM and SSDs SMART metrics | NO | NO | NO | YES | NO | NO | |||||||||||||||||||||||||||
Cluster Mgmt. (Kubernetes, Mesos, Swarm) | NO | NO | NO | Kubernetes and Mesos | |||||||||||||||||||||||||||||
Modifiers - (filtering, threshold, | , tags, contexts) | ||||||||||||||||||||||||||||||||
Other Services monitoring: (DHCP, FTP, NTP, HAProxy, Consul) | YES for all. | ||||||||||||||||||||||||||||||||
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