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Change Log

All notable changes to this project will be documented in this file.

[0.28.0] - 2021-07-19

Added

  • Introduce Web UI v2
  • Implement partial updates for the graph
  • Standardize container metadata between runtimes
  • Added new ovnk8s probe and new bindings generators for OVN databases
  • Add Ascendants and Descendants steps

Changed

  • Allow gremlin request on internal fields, such as @Revision, @Origin...

[0.27.0] - 2020-12-07

Added

  • Persist graph element across analyzer restarts
  • Add new block device topology probe
  • Add node and edge APIs
  • Add PATCH method to modify resources
  • Add authentication definition to swagger description
  • Add SSL support to Open vSwitch OpenFlow parser
  • Allow removing nodes and edges in batch from the CLI
  • Support multiple elasticsearch hosts, SSL and authentication

Changed

  • Bump to elasticsearch v7
  • Extract graph engine to its own standalone package 'graffiti'
  • Move hardware related root node data to a probe
  • Use 'flattened' type in elasticsearch to avoid mapping explosion

[0.26.0] - 2019-10-18

Added

  • Add new seed mechanism to start a probe inside a container/process namespace
  • Add support for plugins
  • Add BESS topology probe (thanks to Tim Rozet)
  • Report active flows status through WebSocket

Changed

  • Use 1.11 as minimal Golang version
  • Moved to go mod to ease import from external projects
  • Use Ubuntu 19.04 as Docker base image

[0.25.0] - 2019-09-10

Added

  • API Swagger definitions (http://skydive.network/swagger/)
  • AWS flow logs exporter
  • Namespace support to flow subscribing mechanism
  • Support for subscribing flows by capture ID

Changed

  • eBPF probe performance improvements
  • Restore nightly builds
  • Support for neighbors update detection

[0.24.0] - 2019-06-24

Added

  • Add Gremlin console in Web UI
  • Add ovsnetflow capture to act as a NetFlow receiver
  • Add target mechanism to export flow using ERSPAN or NetFlow
  • Packet injector:
    • Allow use as a standalone executable
    • Allow reaching external IPs
  • Support multiple captures on a single interface
  • Allow creating API resources with a TTL
  • Added support for all DNS fields
  • Add flow validation workflow
  • Gremlin:
    • Add Has step on Values result
    • Add NEE (not equal or not exist) predicate
    • Add Dedup step on ShortestPath result

Changed

  • Set capture ID in flow metadata
  • Properly handle updates in Gremlin filters
  • Fix rtt calculation for RST packet
  • Set real Kubernetes cluster name

[0.23.0] - 2019-05-15

Added

  • OVN probe with support for logical switches, routers, ports and ACLs
  • Network Service Mesh (NSM) probe
  • Open vSwitch:
    • Use JSON schema when using ovs-ofctl command line utility
    • Use Golang OpenFlow decoder based on loxigen
    • Support for Gremlin Metric step on OVS interfaces
    • Add advanced options for ovssflow capture type
  • eBPF:
    • 802.1q/VLAN support
    • IP/GRE support
  • Libvirt:
    • Associations to SRIO-V virtual functions
    • Add pure Go implementation for static builds
  • Kubernetes:
    • Add configmap/secret data keys to metadata
    • Added health checks to Skydive template

Changed

  • Move workflow execution to server side
  • Move RTT from flows to metrics to keep history of it

[0.22.0] - 2019-03-21

Added

  • SRIO-V support
  • SFlow Counters support
  • Add VPP probe
  • Flow life cycle Fields to track TCP sessions
  • TCP fields support to eBPF probe
  • NetLink probe reports permanent hardware address
  • Report kernel command line as metadata
  • Mechanism to report config file fields as metadata
  • Report global OVS information as metadata
  • UI:
    • Add collapse/expand support for dict/map
    • Add edge highlighting support
  • Gremlin:
    • Add Without predicate
  • Python:
    • Add injection to REST API
    • Add alert to REST API

Changed

  • Improve eBPF probe performances
  • General agent performance improvements
  • Kubernetes and Istio support improvements
  • Fix TTL field setting for ICMPV4 packet injection
  • Improve communication performances between agent and analyzer
  • Fix datastore replication issue

[0.21.0] - 2018-11-30

Added

  • LLDP topology probe for topology auto discovery
  • Libvirt probe
  • runC container probe
  • Introduce WebSocket endpoint to get flows notifications
  • Extra flow layers such as DHCP, VRRP and DNS
  • Add command line command to export/import topology
  • Gremlin:
    • New HasEither step to generate a OR filter instead of AND
    • NextHop step to compute the next hop using routing tables
  • Support for OpenFlow group tables

Changed

  • Wait for elasticsearch to be ready instead of failing
  • Refactored TLS configuration

[0.20.0] - 2018-10-08

Changed

  • Switch to gopacket master branch
  • Revamp Web UI
  • Remove user metadata API
  • Disable elasticsearch by default in devstack plugin
  • Bug fixes:
    • Fix Limit for topology Gremlin steps
    • Fix packets missed to due timeout when using afpacket
    • Use Capture.ID instead of capture gremlin expression
    • Fix IPv6 connection state when using eBPF
    • Fix openflow rule modification

[0.19.1] - 2018-09-13

Added

  • Add node/edge rules API to register nodes and edges
  • Add Ansible library to create nodes and edges

Changed

  • Bug fixes:
    • Fix WebSocket flow authentication
    • Fix deployment on RHEL using Ansible
    • Fix SElinux policy to connect to Keystone
    • Change Docker base image to Ubuntu
    • Add origin field in python api

[0.19.0] - 2018-08-08

Added

  • Gremlin:
    • Add descendants to retrieve both parents and children
    • Add As and Select steps to get the union of a set of nodes
    • Allow queries on booleans
  • New JavaScript API
    • Support for browsers, NPM or the Skydive embedded JS engine
    • Convert command line shell to JavaScript
  • Add API to upload and execute workflows
  • Add support for Power architecture:
    • Build Docker images
    • Test architecture on our CI
  • Retrieve OpenContrail routing tables

Changed

  • Improved Elasticseach backend:
    • Add support for rolling indices
    • Bump minimal version to 5.5
  • Retrieve more Kubernetes metadata and create dedicated section on the Web UI for it
  • Performance improvements using easyjson
  • Allow using different authentication backends for API and for internal communications
  • TripleO: move to config-download mechanism

[0.18.0] - 2018-06-18

Added

  • Add RBAC mechanism
  • Provide development Vagrant boxes on Vagrantcloud, supporting VirtualBox and libvirt
  • Report more Kubernetes objects: deployment, services, daemonsets, jobs and more
  • Report interface features from netlink
  • New FOREVER and NOW Gremlin predicates
  • Add SELinux policy security module for RPM packages
  • Add authentication and etcd clustering to the Ansible playbooks

Changed

  • Flows:
    • Parsing code rework for correctness and performances
    • Fix metrics with multipath
    • Provide a way to define the layers used (L2/L3 or L3 only)
  • Split Keystone auth section : one for the probe and one for authentication
  • Support different elasticsearch connections per index
  • WebUI:
    • Nicer sidebar
    • Dedicated section for routing table
    • Allowing managing alerts
    • Group OpenFlow rules by priority and actions
  • OVS-DPDK fixes

[0.17.0] - 2018-04-03

Added

  • Add Latency to WebUI topology links
  • Packet Injector now allows to increment ICMP id for each packet
  • New Light WebUI theme
  • Add Has Gremlin step to SocketInfo step allowing to filter socket information
  • New socketinfo probe to retrieve active sockets of a host. The new Sockets Gremlin step can be used to retrieve socket information corresponding to flows.
  • Add Bandwidth to WebUI Metric tables
  • Add clustering support for embedded Etcd
  • Aggregates Gremlin step now uses fixed time slices
  • Add LXD topology support
  • Python API now suports TLS and authentication

Changed

  • SocketInfo now supports kernel wihtout ePBF support
  • Fixed Flow metric issue on large packets
  • Add capture Name to node metadata
  • Fixed RTT display on WebUI

[0.16.0] - 2018-01-29

Added

  • Add Kubernetes probe
  • Retrieve Open vSwitch port metrics
  • Allow traffic capture on Open vSwitch ports
  • Add host info, such as CPU, memory, OS, Open vSwitch options, to metadata
  • Add Preferences pane to the Web UI
  • Allow SSH to agents through the WebUI (thanks to Dede)
  • Allow cross compilation of Skydive

Changed

  • Long-running packet injections can now be stopped
  • Performance improvements:
    • Add gzip support for both API and WebSocket
    • JSON serialization optimizations
  • The skydive-client module now supports Python 2.7

[0.15.0] - 2017-12-05

Added

  • Flow capture with eBPF probe
  • Add routing table to the node metadata
  • Python module skydive-client available through pypi
  • Allow dynamic peering between analyzers
  • Allow customizing the WebUI through external JS and CSS files

Changed

  • Use Dijkstra as graph shortest path algorithm
  • Fix use of domain name and IPV6 in service addresses
  • Scalability improvements:
    • Improve ping mechanism for better disconnection handling
    • Reduce graph lock pressure for Neutron and alerts

[0.14.0] - 2017-11-14

Added

  • New DPDK probe
  • Topology:
    • Allow filtering per client
    • Add ARP table to the node metadata
  • WebUI:
    • Add sliding panel for filtering, highlighting and time selection
    • Add legend to report filter and time
    • Allow selecting capture type
  • Allow deploying multi analyzers and elasticsearch with Vagrant
  • Add support for Snort alert messages
  • Handle network namespaces created by docker network

Changed

  • Bump minimal Go version to 1.8

[0.13.0] - 2017-10-21

Added

  • New probe to retrieve and display for Openflow rules on OVS switch
  • Flows:
    • Enable SYN/FIN/RST capturing
    • Add RTT per layer
    • Map flows to process
    • Use WebSocket for flows from the agents to the analyzers
  • Gremlin:
    • Add BPF step to filter raw packets
    • Add BothV step
    • Add Subgraph step to provide a way to get a restricted view of the Graph. For ex: only the "layer2" topology.
    • Add Ipv4Range predicate which matches ipv4 in a range
    • Make HasKey work with complex metadata value, ex: list
  • Packet injector:
    • Add payload support for TCP packets
    • Add support for UDP packets
  • Ansible module to deploy Skydive
  • API:
    • Add and remove user metadata on nodes
    • Add a status API

Changed

  • Change etcd default listen port

[0.12.0] - 2017-07-28

Added

  • Full HTTPS support
  • WebUI:
    • New implementation of the topology for better readability and performances
    • Make time slider easier to use
    • Add zoom fit button
  • Flows:
    • New 'sflow' probe to support capture on physical interfaces
    • Allow keeping raw packets for flows
    • Add ICMP layer to flow structure
  • Graph:
    • Make metadata a real JSON object
    • Add forwarding database to the node metadata
  • Gremlin:
    • Add CONTAINS predicate to test if a value is in an array
    • Add BothE step that returns the incoming and outcoming edges for a node
    • Add E() step to return all the edges of a graph
  • Packet injector:
    • Add icmpv6 support
    • Add TCP support
    • Make use of raw sockets
  • API:
    • Allow returning the graph as dot

Changed

  • Graph:
    • Ensure correctness of the nodes and edges timestamps on both agents and analyzers
  • Moved to Github and dedicated CI infrastructure
  • Trigger alert when a successful evaluation changes
  • Flows:
    • Enable all flow probes by default
    • Do not include payload in layer path
  • Agents do not use etcd any more
  • Use zap logger
  • Bug fixes:
    • Resync captures when becoming master
    • Fix orphaned VLAN interfaces thanks to Mark Goddard
    • Fix handling of Docker labels containing a dot

[0.11.0] - 2017-05-05

Added

  • Elasticsearch:
    • Support Elasticsearch 5
    • Bulk indexing for graph and flows for improved performance
  • WebUI:
    • Display bandwidth on L2 edges
    • Restore discovery and conversation views
  • Allow loading multiple configuration files
  • Support for logging to file and syslog
  • Bash completion file

Changed

  • Keep all netlink events ordered
  • Websocket:
    • Introduced namespace subscription mechanism
    • Validate messages using JSON schemas
    • Use bulk to reduce graph messages number
  • Bug fixes:
    • Fix analyzer deadlock on agent stop
    • Return status error if capture registration failed

[0.10.0] - 2017-03-30

Added

  • Support multiple analyzers for high availability and scalability
  • Store interface metrics as node metadata
  • Flows:
    • New 'pcapsocket' flow probe to inject pcap files
    • Support for VLANs
    • BPF support for afpacket, pcap and sFlow
    • Packet statistics counter for the 'pcap' capture type
  • API:
    • New /api/config route to access configuration values
    • Introduce a WebSocket Python client
  • Topology:
    • Report link speed
    • Allow link metadata definition in 'fabric' probe
    • Add Docker labels to metadata
  • Gremlin:
    • Allow querying graph with a time slice: the Gremlin 'Context' step now accepts a second argument which is a duration. When specified, graph queries will return all the revisions of the matching nodes during this time period
    • Allow 'Metrics' step on graph queries
    • New 'HasNot' and 'HasKey' steps
    • Allow sorting in ascending and descending order for both flow and graph queries
  • WebUI:
    • Add flow-table component
    • Allow to limit number of flows in flow-table
    • Allow collapsing all nodes belonging to a host
    • Show interface statistics in table

Changed

  • Switch all timestamps to milliseconds
  • Changed analyzer.storage config section from a string to a dictionary
  • Flows:
    • Consistent querying for live and stored flows
    • Remove analyzer flow table
  • Gremlin:
    • 'Dedup' step now handles many keys
    • Remove since predicate as replace by context duration
  • Topology:
    • Allow 'netns' probe to work within a containerized agent
  • WebUI:
    • Speed up the topology display by reducing number of redraw
    • Migration to 'vuejs' JavaScript framework

[0.9.0] - 2017-01-27

Added

  • Alerting:
    • Use Gremlin expression for alerts on both graph and flows
    • Allow writing alerts in JavaScript
    • Alerts can now execute scripts and trigger Webhooks
  • New Grafana plugin (https://github.com/skydive-project/skydive-grafana-datasource)
  • New OpenShift template
  • Gremlin:
    • Add 'Aggregates' step
    • Allow sorting and deduplicating against a property
  • Topology:
    • Handle IP adding / removal on interfaces
    • Add peering probe which creates a link based on MAC addresses
  • Flows:
    • Support Geneve tunneling
    • Add Layer 3 tracking ID
    • Add support for Ethernet and IP over MPLS
  • Neutron:
    • Adding Neutron attributed IPs to nodes
    • Add metadata on Neutron managed namespaces
  • WebUI:
    • Keep position of nodes in local storage across browser refresh

Changed

  • Flows:
    • Use persistent ID in flows to handle agent restarts
  • Topology:
    • Remove unsupported titan and gremlin backends
  • Gremlin:
    • Convert 'Bandwidth' step to 'Metrics' and 'Sum'

[0.8.0] - 2016-12-09

Added

  • Flows:
    • Add packet injector to generate traffic between two interfaces
    • Support Geneve tunneling
    • Add support for MPLS over both UDP and GRE
    • Add sFlow tunneling support
    • Add 'Application' metadata that contains the last layer type
  • Gremlin:
    • New 'Metrics' Gremlin step to get all the metrics associated to a set of flows
    • New 'Values' step which returns values of a property: ex: G.V().Values('Name')
    • New 'Sum' step that returns aggregation over named node property: ex: G.Flows().Sum('Metric.ABBytes')
    • New 'Regex' predicated to use regular expression when querying graph and flows
    • New 'At' alias for 'Context' and allow more user friendly time definition ex: g.At('-5m').V()
    • New 'Within' filter for flows
    • New 'Since' predicate to select flows
    • New 'CaptureNode' step to get the capture nodes of a set of flows
  • OpenStack:
    • Add support for Keystone V3
    • Autodetect Skydive agent running inside a virtual machine
  • WebUI:
    • Add packet injector tab
    • Add support for zoom-in zoom-out and reset
    • Add the "famous" "mmmgnmm bob effect"
  • Misc:
    • Experimental support for TLS communication between agents and analyzer
    • Vagrantfile to bootstrap a 3 nodes setup

Changed

  • Flows:
    • Manage captures from the analyzer to handle use case like setting capture point on all the interfaces between two nodes
    • Simplify packet processing and remove timeout mechanisms at the probe level
    • Correct packet length for outer/inner packets in tunnels
  • Topology:
    • Move 'fabric' probe onto the analyzer and add a WebSocket API
  • WebUI:
    • Update timeslider to use delta instead of date
    • Restore discovery and conversation views
    • Fix node selection issue after agent Resync
  • Bugs fixes:
    • Many bugfixes around network namespaces that caused Goroutines to run in the wrong namespace that resulted in flow captures and packet injection errors
    • Fix leak of namespace fd in docker probe
  • Build:
    • Do not integrate generated file anymore

[0.7.0] - 2016-11-08

Added

  • Flows:
    • Encapsulation support (VXLAN, GRE)
    • IPv6 support
  • Gremlin:
    • Add 'Sort' step to sort flows by uptime time
    • Add 'Nodes' step to get capture, source and destination nodes
  • Topology:
    • Add cache for gremlin, titangraph and orientdb backends
    • Add OpenContrail probe
  • WebUI:
    • Use shortest path to create captures
    • Support for tunneling
  • Client:
    • Add an 'allinone' command
    • Add a 'shell' command
  • Documentation:
    • Add quick start and contributing sections to README.md
    • Add rest, flow schema section and some fixes

Changed

  • Flows:
    • Reworked flow structurem to simplify exploitation and storage
    • Use ANode, BNode, Node instead of old name for flows
  • Gremlin:
    • Optimize Dedup step for flows
    • Ensure error is passed for every step
  • WebUI:
    • Replace flow jsonview by a flow grid table
    • Change node selection behaviour
  • Docker:
    • Use scratch as Docker base image
    • Add missing configuration file for Docker image
  • OpenStack:
    • Add availability configuration variable
    • Retrieve metadatas when port metadatas are updated
  • Bugs fixes:
    • Properly handle default values in configuration
    • Fix fd leak when using http clients
    • Stop timer of gopacket
    • Fix frozen agent when a flow query was used while when stopping flow table

[0.6.0] - 2016-10-15

Added

  • Use elasticsearch as a time series database
  • Add elasticsearch graph backend
  • New node ID that persists between agent restart
  • New afpacket capture type
  • New 'fabric' probe to register external equipment like Top Of Rack switches
  • Gremlin improvements:
    • Add 'Range' and 'Limit' Gremlin steps
    • Add 'Hops' step to get the nodes traversed by a set of flows
  • Add architecture section to the documentation
  • Add devstack functional testing

Changed

  • Skydive binary is linked statically with pcap
  • Renamed 'pcap' probe to 'gopacket'
  • Web UI improvements:
    • Clearer representation using groups of nodes
    • Node pinning
    • Highlight traversed nodes in Web UI
  • Bug fixes:
    • Wait for analyzer before starting agent
    • Avoid capture create with duplicate gremlin request (both thanks to Konstantin Dorfman)
    • Fix shortestPath and add a test to illustrate the bug (thanks to Antoine Eiche)
    • Limit neutron API calls (thanks to Jean-Philippe Braun)
    • Use authenticated request while waiting for the analyzer (thanks to Mathieu Rohon)

[0.5.0] - 2016-09-15

Added

  • Gremlin improvements:
    • Allow filtering flows in Gremlin query
    • Add bandwidth calculation
    • New steps: Count, Both
    • New predicates: Lt, Gt, Lte, Gte, Between, Inside, Outside

Changed

  • Scaling improvements
  • Use protobuf instead of JSON for analyzer - agent communications
  • Switch Docker image to Ubuntu
  • Improved release pipeline (executables, Docker image)