ClickHouse/docs/en/operations/update.md

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# ClickHouse Update
If ClickHouse was installed from deb packages, execute the following commands on the server:
```
sudo apt-get update
sudo apt-get install clickhouse-client clickhouse-server
sudo service clickhouse-server restart
```
If you installed ClickHouse using something other than the recommended deb packages, use the appropriate update method.
ClickHouse does not support a distributed update. The operation should be performed consecutively on each separate server. Do not update all the servers on a cluster simultaneously, or the cluster will be unavailable for some time.