update to v1.23.1

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- Update to v1.22.1:
Bug fixes:
  - Fixed the latency issue on the ACLK and suppress the diagnostics.
  - Restored old semantics of "netdata -W set" command.
  - Removed check for old alarm status.
- Changes for v1.22.0:
Breaking Changes:
  * The previous iteration of Netdata Cloud, accessible through
    various Sign in and Nodes view (beta) buttons on the Agent
    dashboard, is deprecated in favor of the new Cloud experience.
  * Our old documentation site (docs.netdata.cloud) was replaced
    with Netdata Learn. All existing backlinks redirect to the new
    site.
  * Our localization project is no longer actively maintained.
    We're grateful for the hard work of its contributors.
Improvements:
  * Netdata Cloud:
    - Enabled support for Netdata Cloud.
    - Added TTL headers to ACLK responses.
    - Improved the thread exit fixes in #8750.
    - Improved ACLK reconnection sequence.
    - Improved ACLK memory management and shutdown sequence.
    - Added session-id to ACLK using connect timestamp.
  * Collectors:
    - Improved the index size for the eBPF collector.
    - Added health alarm templates for the whoisquery collector.
    - Added a whoisquery collector.
    - Removed an automatic restart of apps.plugin.
  * Exporting:
    - Enabled internal statistics for the exporting engine in the

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- Update to v1.21.1:
Release v1.21.1 is a hotfix release to improve the performance of
the new React dashboard, which was merged and enabled by default in
v1.21.0.
The React dashboard shipped in v1.21.0 did not properly freeze
charts that were outside of the browser's viewport. If a user who
loaded many charts by scrolling through the dashboard, charts
outside of their browser's viewport continued updating. This excess
of chart updates caused all charts to update more slowly than every
second.
v1.21.1 includes improvements to the way the Netdata dashboard
freezes, maintains state, and restores charts as users scroll.

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- Update to v1.21.0 (go.d.plugin v0.18.0):
Improvements
  * Extended TLS support for 1.3. (#8505) by thiagoftsm
  * Switched to the React dashboard code as the default dashboard. (#8363) by Ferroin
Collectors
  * Added a new Pulsar collector. (#8364) by ilyam8
  * Added a new VerneMQ collector. (#8236) by ilyam8
  * Added high precision timer support for plugins such as idlejitter. (#8441) by mfundul
  * Added an alarm to the dns_query collector that detects DNS query failure. (#8434) by ilyam8
  * Added the ability to get the pod name from cgroup with kubectl in bare-metal deployments. (#7416) by WoozyMasta
  * Added the ability to connect to non-admin user IDs for a Ceph storage cluster. (#8276) by paulmezz
  * Added connections (backend) usage to Postgres monitoring. (#8126) by ManuelPombo
  * eBPF: Added support for additional Linux kernels found in Debian 10.2 and Ubuntu 18.04. (#8192) by thiagoftsm
Exporting
  * Added a MongoDB connector to the exporting engine. (#8416) by vlvkobal
  * Added a Prometheus Remote Write connector to the exporting engine. (#8292) by vlvkobal
  * Added an AWS Kinesis connector to the exporting engine. (#8145) by vlvkobal
Bug fixes
  * Removed notifications from the dashboard and fixed the /default.html route. (#8599 by jacekkolasa
  * Fixed help-tooltips styling, private registry node deletion, and the right-hand sidebar "jumping" on document clicks. (#8553 by jacekkolasa
  * Fixed errors reported by Coverity. (#8593) by thiagoftsm, (#8579) by amoss, and (#8586) by thiagoftsm
  * Added netdata.service.* to .gitignore to hide system/netdata.service.v235 file. (#8556) by vlvkobal
  * Fixed Debian 8 (Jessie) support. (#8590) and (#8593) by prologic
  * Fixed broken Fedora 30/31 RPM builds. (#8572) by prologic
  * Fixed broken pipe ignoring in apps.plugin. (#8554) by vlvkobal
  * Fixed the bytespersec chart context in the Python Apache collector. (#8550) by ilyam8
  * Fixed charts.d.plugin to exit properly during Netdata service restart. (#8529) by ilyam8
  * Fixed minimist dependency vulnerability. (#8537) by jacekkolasa
  * Fixed our Debian/Ubuntu packages to package the expected systemd unit files. (#8468) by prologic
  * Fixed auto-updates for static (kickstart-static64.sh) installs. (#8507) by prologic
  * Fixed openSUSE 15.1 RPM package builds. (#8494) by prologic
  * Fixed how SimpleService truncates Python module names. (#8492) by ilyam8
  * Removed erroneous \n in uninstaller output. (#8446) by prologic
  * Fixed install-required-packages script to self-update apt. (#8491) by prologic
  * Added proper prefix to Python module names during loading. (#8474) by ilyam8
  * Fixed how the Netdata updater script cleans up after being run. (#8414) by prologic
  * Fixed the flushing error threshold with the database engine. (#8425) by mfundul
  * Fixed memory leak for host labels streaming from slaves to master. (#8460) by thiagoftsm
  * Fixed support for uninstalling the eBPF collector in the uninstaller. (#8444) by prologic
  * Fixed a bug involving stop_all_netdata uv_pipe_connect() in the installer. (#8444) by prologic
  * Fixed installer output regarding newlines. (#8447) by prologic
  * Fixed broken dependencies for Ubuntu 19.10. (#8397) by prologic
  * Fixed streaming scaling. (#8375) by mfundul
  * Fixed missing characters in kernel version field by encoding slave fields. (#8216) by thiagoftsm
  * Fixed installation for Ubuntu 14.04 (#7690) by Ehekatl
  * Fixed dependencies for Debian Jessie. (#8290) by Ferroin
  * Fixed dependency names for Arch Linux. (#8334) by Ferroin
  * Removed extra printed \n in various installers. (#8324)/(#8325)/(#8326) by Jiab77
  * Fixed missing folders in /var/ for .deb packages. (#8314) by SamK
  * Fixed Ceph collector to get osd_perf_infos in versions 14.2 and higher. (#8248) by ilyam8
  * Fixed RHEL / CentOS 8.x dependencies for Judy-devel and others.(#8202) by prologic
  * Removed extraneous commas from chart information in dashboard. (#8266) by FlyingSixtySix
  * Removed tmem collection from xenstat_plugin to allow Netdata on Xen 4.13 to compile successfully. (#7951) by rushikeshjadhav
  * Fixed get_latest_version for nightly channel update script. (#8172) by ilyam8
  * Restricted messages to Google Analytics. (#8161) by thiagoftsm
  * Fixed Python 3 dict access in OpenLDAP collector module. (#8162) by Mic92

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- Update to v1.20.0 (go.d.plugin v0.15.0)
Breaking Changes:
  * Removed deprecated bash collectors apache, cpu_apps, cpufreq,
    exim, hddtemp, load_average, mem_apps, mysql, nginx, phpfpm,
    postfix, squid, tomcat. If you were still using one of these
    collectors with custom configurations, you can find the new
    collector that replaces it in the supported collectors list.
Improvements:
  * Host labels:
    + Added support for host labels
    + Improved the monitored system information detection.
      Added CPU freq & cores, RAM and disk space.
    + Started distinguishing the monitored system's (host)
      OS/Kernel etc. from those of the docker container's
    + Started creating host labels from collected system info
    + Started passing labels and container environment variables
      via the streaming protocol
    + Started sending host labels via exporting connectors
    + Added label support to alarm definitions and started
      recording them in alarm logs
    + Added support for host labels to the API responses
    + Added configurable host labels to netdata.conf
    + Added kubernetes labels
  * New collectors:
    + eBPF kernel collector
    + CockroachDB
    + squidlog: squid access log parser
  * Collector improvements:
    + apps.plugin: Created dns group, improved database group,
      improved ceph & samba groups

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- Also package go.d.plugin
- Update to v1.19.0
Improvements:
  * New collectors:
    + AM2320 sensor collector plugin
    + Added parsing of /proc/pagetypeinfo to provide metrics on
      fragmentation of free memory pages
    + The unbound collector module was completely rewritten, in Go
  * Collector improvements:
    + We rewrote our web log parser in Go, drastically improving
      its flexibility and performance
    + The Kubernetes kubelet collector now reads the service
      account token and uses it for authorization. We also added a
      new default job to collect metrics from
      https://localhost:10250/metrics
    + Added a new default job to the Kubernetes coredns collector
      to collect metrics from
      http://kube-dns.kube-system.svc.cluster.local:9153/metrics
    + apps.plugin: Synced FRRouting daemons configuration with the
      frr 7.2 release
    + apps.plugin: Added process group for git-related processes
    + apps.plugin: Added balena to the container-engines
      application group
    + web_log: Treat 401 Unauthorized requests as successful
    + xenstat.plugin: Prepare for xen 4.13 by checking for check
      xenstat_vbd_error presence
    + mysql: Added galera cluster_status alarm
  * Metrics database:
    + Netdata generates alarms if the disk cannot keep up with
      data collection

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- Update to v1.18.1
Improvements:
  * Disable slabinfo plugin by default to reduce the total number
    of metrics collected
  * Add dbengine RAM usage statistics
  * Support Google Hangouts chat notifications
  * Add CMocka unit tests
  * Add prerequisites to enable automatic updates for installations
    via the static binary (kickstart-static64.sh)
Bug fixes:
  * Fix unbound collector timings: Convert recursion timings to
    milliseconds.
  * Fix unbound collector unhandled exceptions
  * Fix megacli collector binary search and sudo check
  * Fix Clang warnings
  * Fix python.d error logging: change chart suppress msg level
    from ERROR to INFO
  * Fix freeipmi update frequency check: was warning that 5 was too
    frequent and it was setting it to 5.
  * Fix alarm configurations not getting loaded, via better
    handling of chart names with special characters
  * Don't write HTTP response 204 messages to the logs
  * Fix build when CMocka isn't installed
  * Prevent zombie processes when a child is re-parented to netdata
    when its running in a container, by adding child process reaper
- Update to v1.18.0
Improvements:
  * Database engine:
    + Make dbengine the default memory mode
    + Increase dbengine default cache size

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- Update to v1.17.0
Improvements:
  * Database engine:
    + Variable granularity support for data collection
    + Added tips on the UI to encourage users to try the new DB
      Engine, when they reach the end of their metrics history
  * Health:
    + Added support for plain text only email notifications
    + Started showing “hidden” alarm variables in the responses of
      the chart and data API calls
    + Added a new API call for alarm status counters, as a first
      step towards badges that will show the total number of alarms
  * Security:
    + Added configurable default locations for trusted CA
      certificates
    + Added safer way to get container names
    + Added SSL connection support to the python mongodb collector
  * New collectors:
    + VSphere collector
  * Archiving:
    + Added a new MongoDB backend
  * Other:
    + Added apps grouping debug messages
    + GCC warning and linting improvements
    + Added global configuration option to show charts with zero
      metrics
    + Improved the way we parse HTTP requests, so we can avoid
      issues from edge cases
  * Bug fixes:
    + Fixed sensor chips filtering in python sensors collector

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