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@julien-lebot julien-lebot released this 04 Feb 17:13
· 17 commits to 7.17.x since this release
7.17.0
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Learn about vigilant mode.

Prelude

Release on: 2020-02-04

Upgrade Notes

  • Change agents base images to Debian bullseye

  • Starting with this version, the containerized Agent never chooses
    the OS hostname as its hostname when it is running in a dedicated
    UTS namespace. This is done in order to avoid picking container IDs
    or kubernetes POD names as hostnames, since these identifiers do not
    reflect the identity of the host they run on.

    This change only affects you if your agent is currently using a
    container ID or a kubernetes POD name as hostname. The hostname of
    the agent can be checked with agent hostname. If the output stays
    stable when the container or POD of the agent is destroyed and
    recreated, you’re not impacted by this change. If the output
    changes, it means that the agent was unable to talk to EC2/GKE
    metadata server, it was unable to get the k8s node name from the
    kubelet, it was unable to get the hostname from the docker daemon
    and it is running in its dedicated UTS namespace. Under those
    conditions, you should set explicitly define the host name to be
    used by the agent in its configuration file.

New Features

  • Add logic to support querying the kubelet through the APIServer to
    monitor AWS Fargate on Amazon EKS.
  • Add mapping feature to dogstatsd to convert parts of
    dogstatsd/statsd metric names to tags using mapping rules in
    dogstatsd using wildcard and regex patterns.
  • Resource tag collection on ECS.
  • Add container_mode in journald input to set source/service as
    Docker image short name when we receive container logs

Enhancement Notes

  • Add kube_node_role tag in host metadata for the node role based on
    the kubernetes.io/role label.
  • Add cluster_name tag in host metadata tags. Cluster name used is
    read from config if set by user or autodiscovered from cloud
    provider or Kubernetes node label.
  • The Agent check command displays the distribution metrics. The Agent
    status command displays histogram bucket samples.
  • The system-probe will augment network connection information with
    DNS names gathered by inspecting local DNS traffic.
  • Users can now use references to capture groups in mask sequence
    replacement_placeholder strings
  • Do not apply the metric namespace configured under statsd_metric_namespace to dogstatsd
    metrics prefixed with datadog.tracer.
    Tracer metrics are published with this prefix.

Bug Fixes

  • APM: The trace-agent now correctly applieslog_to_console, log_to_syslog and all other syslog
    settings.
  • Make the log agent continuously retry to connect to docker rather
    than giving up when docker is not running when the agent is started.
    This is to handle the case where the agent is started while the
    docker daemon is stopped and the docker daemon is started later
    while the datadog agent is already running.
  • Fixes #4650 [v7] Syntax in /readsecret.py for Py3
  • Fixes an issue in Docker where mounting empty directories to disable
    docker check results in an error.
  • Fixes the matching of container id in Tagger (due to runtime prefix)
    by matching on the 'id' part only
  • Fix the node roles to host tags feature by handling the other
    official Kube way to setting node roles (when multiple roles are
    required)
  • Properly check for "true" value of env var DD_LEADER_ELECTION
  • It's possible now to reduce the risk of missing kubernetes tags on
    initial logs by configuring "logs_config.tagger_warmup_duration".
    Configuring "logs_config.tagger_warmup_duration" delays the send
    of the first logs of a container. Default value 0 seconds, the fix
    is disabled by default. Setting
    "logs_config.tagger_warmup_duration" to 5 (seconds) should be
    enough to retrieve all the tags.
  • Fix eBPF code compilation errors about asm goto on Ubuntu 19.04
    (Disco)
  • Fix race condition in singleton initialization
  • On Windows, fixes registration of agent as event log source. Allows
    agent to correctly write to the Windows event log.
  • On Windows, when upgrading, installer will fail if the user attempts
    to assign a configuration file directory or binary directory that is
    different from the original.
  • Add logic to support docker restart of containers.
  • Fix a Network Performance Monitoring issue where TCP connection
    direction was incorrectly classified as outgoing in containerized
    environments.
  • Fixed a few edge cases that could lead to events payloads being
    rejected by Datadog's intake for being too big.

Other Notes

  • Upgrade embedded dependencies: curl to 7.66.0, autoconf to
    2.69, procps to 3.3.16
  • JMXFetch upgraded to
    0.34.0
  • Bump embedded Python 3 to 3.7.6
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