mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-26 17:41:59 +00:00
74 lines
1.9 KiB
Markdown
74 lines
1.9 KiB
Markdown
---
|
|
sidebar_position: 45
|
|
sidebar_label: Secured Communication with Zookeeper
|
|
---
|
|
|
|
# Optional secured communication between ClickHouse and Zookeeper {#secured-communication-with-zookeeper}
|
|
|
|
You should specify `ssl.keyStore.location`, `ssl.keyStore.password` and `ssl.trustStore.location`, `ssl.trustStore.password` for communication with ClickHouse client over SSL. These options are available from Zookeeper version 3.5.2.
|
|
|
|
You can add `zookeeper.crt` to trusted certificates.
|
|
|
|
``` bash
|
|
sudo cp zookeeper.crt /usr/local/share/ca-certificates/zookeeper.crt
|
|
sudo update-ca-certificates
|
|
```
|
|
|
|
Client section in `config.xml` will look like:
|
|
|
|
``` xml
|
|
<client>
|
|
<certificateFile>/etc/clickhouse-server/client.crt</certificateFile>
|
|
<privateKeyFile>/etc/clickhouse-server/client.key</privateKeyFile>
|
|
<loadDefaultCAFile>true</loadDefaultCAFile>
|
|
<cacheSessions>true</cacheSessions>
|
|
<disableProtocols>sslv2,sslv3</disableProtocols>
|
|
<preferServerCiphers>true</preferServerCiphers>
|
|
<invalidCertificateHandler>
|
|
<name>RejectCertificateHandler</name>
|
|
</invalidCertificateHandler>
|
|
</client>
|
|
```
|
|
|
|
Add Zookeeper to ClickHouse config with some cluster and macros:
|
|
|
|
``` xml
|
|
<clickhouse>
|
|
<zookeeper>
|
|
<node>
|
|
<host>localhost</host>
|
|
<port>2281</port>
|
|
<secure>1</secure>
|
|
</node>
|
|
</zookeeper>
|
|
</clickhouse>
|
|
```
|
|
|
|
Start `clickhouse-server`. In logs you should see:
|
|
|
|
```text
|
|
<Trace> ZooKeeper: initialized, hosts: secure://localhost:2281
|
|
```
|
|
|
|
Prefix `secure://` indicates that connection is secured by SSL.
|
|
|
|
To ensure traffic is encrypted run `tcpdump` on secured port:
|
|
|
|
```bash
|
|
tcpdump -i any dst port 2281 -nnXS
|
|
```
|
|
|
|
And query in `clickhouse-client`:
|
|
|
|
```sql
|
|
SELECT * FROM system.zookeeper WHERE path = '/';
|
|
```
|
|
|
|
On unencrypted connection you will see in `tcpdump` output something like this:
|
|
|
|
```text
|
|
..../zookeeper/quota.
|
|
```
|
|
|
|
On encrypted connection you should not see this.
|