Add inter-server cluster secret, it is used for Distributed queries
inside cluster, you can configure in the configuration file:
<remote_servers>
<logs>
<shard>
<secret>foobar</secret> <!-- empty -- works as before -->
...
</shard>
</logs>
</remote_servers>
And this will allow clickhouse to make sure that the query was not
faked, and was issued from the node that knows the secret. And since
trust appeared it can use initial_user for query execution, this will
apply correct *_for_user (since with inter-server secret enabled, the
query will be executed from the same user on the shards as on initator,
unlike "default" user w/o it).
v2: Change user to the initial_user for Distributed queries if secret match
v3: Add Protocol::Cluster package
v4: Drop Protocol::Cluster and use plain Protocol::Hello + user marker
v5: Do not use user from Hello for cluster-secure (superfluous)
* DOCSUP-1036: Describe settings for different pools (#118)
* describe settings for different pools
* minor changes
* add refs to and from distributed, server settings, kafka, replication, mergetree
* changes in links description
* add description and links to RU version
* add descrtiption and links to ru version
* minor changes
* CLICKHOUSEDOCS-620: Returned text lost by the last merge.
Co-authored-by: Evgenia Sudarikova <56156889+otrazhenia@users.noreply.github.com>
Co-authored-by: Sergei Shtykov <bayonet@yandex-team.ru>
* Refactoring in preparation for AMP support
* infrastructure for AMP validation
* Add Metrika counter on AMP page + adjust layout
* more content fixes
* improve amp layout
* improve navigation
* Move converting admonitions to generation time
* strict amp test check
* Batch AMP validation
* Add date published/modified to docs articles and their ld+json meta
* few more content fixes
* improve ld+json meta
* adjust margins
* skip published/modified for stable release docs
* adapt single page mode
* update po
* skip published/modified for single page docs
* update po
* adjust layout
* adjust layout
