> For the complete documentation index, see [llms.txt](https://docs.sonarsource.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sonarsource.com/sonarqube-server/10.4/analyzing-source-code/scanner-environment/install-self-signed-certificate.md).
# Installing the server’s self-signed certificate
If your SonarQube Server instance uses HTTPS with a self-signed certificate, you must import the certificate into the scanner environment. This page is for SonarQube Server 10.4.
{% hint style="info" %}
**For AI agents:** You're in the SonarQube Server 10.4 documentation. For a list of all 10.4 pages, see the [SonarQube Server 10.4 page index](https://2155789048-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FL4urx4YsPFYDefLTrxao%2Fuploads%2FEzX50B1e7djUECg3wgVO%2Fsonarqube-server-10.4-llms.txt?alt=media). For the whole site, see the [page index](https://docs.sonarsource.com/llms.txt) or the [full text](https://docs.sonarsource.com/llms-full.txt). For another version, replace 10.4 in the URL with that version. The [latest version](https://docs.sonarsource.com/sonarqube-server/) has no version number in its URL.
{% endhint %}
If your SonarQube Server instance is [Operating the server](/sonarqube-server/10.4/setup-and-upgrade/configure-and-operate-a-server/operating-the-server.md) and a self-signed certificate (or more generally, an SSL certificate that is not signed by an authority trusted by Java) then you must install the self-signed certificate into the Java truststore of your CI/CD host machine otherwise the scanner will not be able to connect to the server and the analysis will fail.
## General procedure
JVM comes with a default truststore called `cacerts`. It resides in`\jre\lib\security\cacerts`.
To install the certificate into the truststore, use the JVM tool `keytool`. The instructions depend on your operating system and you will find many resources online, such as [this one](https://www.ibm.com/docs/en/tnpm/1.4.2?topic=security-import-certificate-jre-keystore) for Linux.
## If running the scanner with Docker
If you need to configure a self-signed certificate for the scanner to communicate with your SonarQube Server instance, you can use a volume under `/tmp/cacerts` to add it to the containers java trust store:
```css-79elbk
docker pull sonarsource/sonar-scanner-cli
docker run \
--rm \
-v ${YOUR_CERTS_DIR}/cacerts:/tmp/cacerts \
-v ${YOUR_CACHE_DIR}:/opt/sonar-scanner/.sonar/cache \
-v ${YOUR_REPO}:/usr/src \
-e SONAR_HOST_URL="http://${SONARQUBE_URL}" \
sonarsource/sonar-scanner-cli
```
Alternatively, you can create your own container that includes the modified `cacerts` file. Create a `Dockerfile` with the following contents:
```css-79elbk
FROM sonarsource/sonar-scanner-cli
COPY cacerts /usr/lib/jvm/default-jvm/jre/lib/security/cacerts
```
Then, assuming both the `cacerts` and `Dockerfile` are in the current directory, create the new image with a command such as:
```css-79elbk
docker build --tag our-custom/sonar-scanner-cli .
```
---
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