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Due to assignment scoping rules in Jinja, the previous version
did not achieve the intended result and ended up duplicating
/tmp mounts.

log-collector: port index templates to ES7

See merge request !125

Mapping types have been removed:
https://www.elastic.co/guide/en/elasticsearch/reference/current/removal-of-types.html

test: try unixy ansible stdout

See merge request !124

base: fix enabling dataset restore unit

See merge request !122

In the case of partitioned datasets, the application layer is
responsible for data management, not float.

This reverts commit d9c90528.

This reverts commit e1c5de10.

base: don't block logs delivery on mtail fifo full

See merge request !121

mtail can get stuck or not running at all, do not block main queue log
delivery in those cases.

Manage resolv.conf

See merge request !120

log-collector: update kibana dashboards

See merge request !119

* All histograms group missing values in 'Other' bucket, to allow drill
down.
* Remove custom label on x axis to enable '@timestamp per <time unit>'
display. See also https://github.com/elastic/kibana/issues/6431

Nginx error log

See merge request !118

Without this setting the regular nginx error logs result in duplication,
since we're also setting error_log to syslog via nginx.conf.

Other systemd phases are left unchanged since nginx.conf might be borked
in the first place.

We're expecting 'program'/'tag' there.

base: fix systemd config path

See merge request !117

Relevant log spam:

es.http.cname_in_publish_address system property is deprecated and no
longer affects http.publish_address formatting. Remove this property to
get rid of this deprecation warning.

log-collector: upgrade to kibana 7

See merge request !116

Elasticsearch 7

See merge request !115