Why I am not connected to my ClickHouse server? There are several reasons for unsuccessful connection incidents to ClickHouse Server....
ClickHouse has tables called ‘system.query_log’ and ‘system_query_thread_log’ that are used for storing statistics of each executed query like duration, memory...
Alert Name Shell or SQL command Severity ClickHouse status $ curl ‘http://localhost:8123/’ Ok. Critical Too many simultaneous queries. Maximum: 100...
There are two kinds of kill statements: to kill a query and to kill a mutation. KILL QUERY Attempts to...
Host OS: Ubuntu 22.04 ClickHouse version: 22.6.3.35 Using the pre-compiled packages is the recommended way for installing ClickHouse. The...