--- title: syslog-ng --- # [linuxserver/syslog-ng](https://github.com/linuxserver/docker-syslog-ng) [![Scarf.io pulls](https://scarf.sh/installs-badge/linuxserver-ci/linuxserver%2Fsyslog-ng?color=94398d&label-color=555555&logo-color=ffffff&style=for-the-badge&package-type=docker)](https://scarf.sh/gateway/linuxserver-ci/docker/linuxserver%2Fsyslog-ng) [![GitHub Stars](https://img.shields.io/github/stars/linuxserver/docker-syslog-ng.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&logo=github)](https://github.com/linuxserver/docker-syslog-ng) [![GitHub Release](https://img.shields.io/github/release/linuxserver/docker-syslog-ng.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&logo=github)](https://github.com/linuxserver/docker-syslog-ng/releases) [![GitHub Package Repository](https://img.shields.io/static/v1.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=linuxserver.io&message=GitHub%20Package&logo=github)](https://github.com/linuxserver/docker-syslog-ng/packages) [![GitLab Container Registry](https://img.shields.io/static/v1.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=linuxserver.io&message=GitLab%20Registry&logo=gitlab)](https://gitlab.com/linuxserver.io/docker-syslog-ng/container_registry) [![Quay.io](https://img.shields.io/static/v1.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=linuxserver.io&message=Quay.io)](https://quay.io/repository/linuxserver.io/syslog-ng) [![Docker Pulls](https://img.shields.io/docker/pulls/linuxserver/syslog-ng.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=pulls&logo=docker)](https://hub.docker.com/r/linuxserver/syslog-ng) [![Docker Stars](https://img.shields.io/docker/stars/linuxserver/syslog-ng.svg?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=stars&logo=docker)](https://hub.docker.com/r/linuxserver/syslog-ng) [![Jenkins Build](https://img.shields.io/jenkins/build?labelColor=555555&logoColor=ffffff&style=for-the-badge&jobUrl=https%3A%2F%2Fci.linuxserver.io%2Fjob%2FDocker-Pipeline-Builders%2Fjob%2Fdocker-syslog-ng%2Fjob%2Fmain%2F&logo=jenkins)](https://ci.linuxserver.io/job/Docker-Pipeline-Builders/job/docker-syslog-ng/job/main/) [![LSIO CI](https://img.shields.io/badge/dynamic/yaml?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=CI&query=CI&url=https%3A%2F%2Fci-tests.linuxserver.io%2Flinuxserver%2Fsyslog-ng%2Flatest%2Fci-status.yml)](https://ci-tests.linuxserver.io/linuxserver/syslog-ng/latest/index.html) [syslog-ng](https://www.syslog-ng.com/products/open-source-log-management/) allows you to flexibly collect, parse, classify, rewrite and correlate logs from across your infrastructure and store or route them to log analysis tools. [![syslog-ng](https://raw.githubusercontent.com/linuxserver/docker-templates/master/linuxserver.io/img/syslog-ng-logo.png)](https://www.syslog-ng.com/products/open-source-log-management/) ## Supported Architectures We utilise the docker manifest for multi-platform awareness. More information is available from docker [here](https://distribution.github.io/distribution/spec/manifest-v2-2/#manifest-list) and our announcement [here](https://blog.linuxserver.io/2019/02/21/the-lsio-pipeline-project/). Simply pulling `lscr.io/linuxserver/syslog-ng:latest` should retrieve the correct image for your arch, but you can also pull specific arch images via tags. The architectures supported by this image are: | Architecture | Available | Tag | | :----: | :----: | ---- | | x86-64 | ✅ | amd64-\ | | arm64 | ✅ | arm64v8-\ | | armhf | ❌ | | ## Application Setup Edit `/config/syslog-ng.conf` to configure your logging sources and destinations. The application pid, control file, etc. are all kept in /config so when using tools such as `syslog-ng-ctl` you need to specify the path e.g. `syslog-ng-ctl reload -c /config/syslog-ng.ctl` More info at [syslog-ng](https://www.syslog-ng.com/technical-documents/list/syslog-ng-open-source-edition). ## Usage To help you get started creating a container from this image you can either use docker-compose or the docker cli. ### docker-compose (recommended, [click here for more info](https://docs.linuxserver.io/general/docker-compose)) ```yaml --- services: syslog-ng: image: lscr.io/linuxserver/syslog-ng:latest container_name: syslog-ng environment: - PUID=1000 - PGID=1000 - TZ=Etc/UTC volumes: - /path/to/syslog-ng/config:/config - /path/to/log:/var/log #optional ports: - 514:5514/udp - 601:6601/tcp - 6514:6514/tcp restart: unless-stopped ``` ### docker cli ([click here for more info](https://docs.docker.com/engine/reference/commandline/cli/)) ```bash docker run -d \ --name=syslog-ng \ -e PUID=1000 \ -e PGID=1000 \ -e TZ=Etc/UTC \ -p 514:5514/udp \ -p 601:6601/tcp \ -p 6514:6514/tcp \ -v /path/to/syslog-ng/config:/config \ -v /path/to/log:/var/log `#optional` \ --restart unless-stopped \ lscr.io/linuxserver/syslog-ng:latest ``` ## Parameters Containers are configured using parameters passed at runtime (such as those above). These parameters are separated by a colon and indicate `:` respectively. For example, `-p 8080:80` would expose port `80` from inside the container to be accessible from the host's IP on port `8080` outside the container. ### Ports (`-p`) | Parameter | Function | | :----: | --- | | `5514/udp` | Syslog UDP | | `6601/tcp` | Syslog TCP | | `6514/tcp` | Syslog TLS | ### Environment Variables (`-e`) | Env | Function | | :----: | --- | | `PUID=1000` | for UserID - see below for explanation | | `PGID=1000` | for GroupID - see below for explanation | | `TZ=Etc/UTC` | specify a timezone to use, see this [list](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List). | ### Volume Mappings (`-v`) | Volume | Function | | :----: | --- | | `/config` | Stores config and application files | | `/var/log` | Stores logs collected by the syslog-ng service | #### Miscellaneous Options | Parameter | Function | | :-----: | --- | ## Environment variables from files (Docker secrets) You can set any environment variable from a file by using a special prepend `FILE__`. As an example: ```bash -e FILE__MYVAR=/run/secrets/mysecretvariable ``` Will set the environment variable `MYVAR` based on the contents of the `/run/secrets/mysecretvariable` file. ## Umask for running applications For all of our images we provide the ability to override the default umask settings for services started within the containers using the optional `-e UMASK=022` setting. Keep in mind umask is not chmod it subtracts from permissions based on it's value it does not add. Please read up [here](https://en.wikipedia.org/wiki/Umask) before asking for support. ## User / Group Identifiers When using volumes (`-v` flags), permissions issues can arise between the host OS and the container, we avoid this issue by allowing you to specify the user `PUID` and group `PGID`. Ensure any volume directories on the host are owned by the same user you specify and any permissions issues will vanish like magic. In this instance `PUID=1000` and `PGID=1000`, to find yours use `id your_user` as below: ```bash id your_user ``` Example output: ```text uid=1000(your_user) gid=1000(your_user) groups=1000(your_user) ``` ## Docker Mods [![Docker Mods](https://img.shields.io/badge/dynamic/yaml?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=syslog-ng&query=%24.mods%5B%27syslog-ng%27%5D.mod_count&url=https%3A%2F%2Fraw.githubusercontent.com%2Flinuxserver%2Fdocker-mods%2Fmaster%2Fmod-list.yml)](https://mods.linuxserver.io/?mod=syslog-ng "view available mods for this container.") [![Docker Universal Mods](https://img.shields.io/badge/dynamic/yaml?color=94398d&labelColor=555555&logoColor=ffffff&style=for-the-badge&label=universal&query=%24.mods%5B%27universal%27%5D.mod_count&url=https%3A%2F%2Fraw.githubusercontent.com%2Flinuxserver%2Fdocker-mods%2Fmaster%2Fmod-list.yml)](https://mods.linuxserver.io/?mod=universal "view available universal mods.") We publish various [Docker Mods](https://github.com/linuxserver/docker-mods) to enable additional functionality within the containers. The list of Mods available for this image (if any) as well as universal mods that can be applied to any one of our images can be accessed via the dynamic badges above. ## Support Info * Shell access whilst the container is running: ```bash docker exec -it syslog-ng /bin/bash ``` * To monitor the logs of the container in realtime: ```bash docker logs -f syslog-ng ``` * Container version number: ```bash docker inspect -f '{{ index .Config.Labels "build_version" }}' syslog-ng ``` * Image version number: ```bash docker inspect -f '{{ index .Config.Labels "build_version" }}' lscr.io/linuxserver/syslog-ng:latest ``` ## Updating Info Most of our images are static, versioned, and require an image update and container recreation to update the app inside. With some exceptions (noted in the relevant readme.md), we do not recommend or support updating apps inside the container. Please consult the [Application Setup](#application-setup) section above to see if it is recommended for the image. Below are the instructions for updating containers: ### Via Docker Compose * Update images: * All images: ```bash docker-compose pull ``` * Single image: ```bash docker-compose pull syslog-ng ``` * Update containers: * All containers: ```bash docker-compose up -d ``` * Single container: ```bash docker-compose up -d syslog-ng ``` * You can also remove the old dangling images: ```bash docker image prune ``` ### Via Docker Run * Update the image: ```bash docker pull lscr.io/linuxserver/syslog-ng:latest ``` * Stop the running container: ```bash docker stop syslog-ng ``` * Delete the container: ```bash docker rm syslog-ng ``` * Recreate a new container with the same docker run parameters as instructed above (if mapped correctly to a host folder, your `/config` folder and settings will be preserved) * You can also remove the old dangling images: ```bash docker image prune ``` ### Image Update Notifications - Diun (Docker Image Update Notifier) !!! tip We recommend [Diun](https://crazymax.dev/diun/) for update notifications. Other tools that automatically update containers unattended are not recommended or supported. ## Building locally If you want to make local modifications to these images for development purposes or just to customize the logic: ```bash git clone https://github.com/linuxserver/docker-syslog-ng.git cd docker-syslog-ng docker build \ --no-cache \ --pull \ -t lscr.io/linuxserver/syslog-ng:latest . ``` The ARM variants can be built on x86_64 hardware using `multiarch/qemu-user-static` ```bash docker run --rm --privileged multiarch/qemu-user-static:register --reset ``` Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64`. ## Versions * **31.01.24:** - Rebase to Alpine 3.19. * **11.06.23:** - Rebase to Alpine 3.18, deprecate armhf. * **10.01.23:** - Add paho-mqtt-c library as required by the syslog-ng documentation * **30.12.22:** - Rebase to Alpine 3.17, add libdbi-drivers for SQL support. * **01.10.22:** - Rebase to Alpine 3.16, migrate to s6v3. * **18.12.21:** - Rebase to Alpine 3.15. * **01.07.21:** - Rebase to Alpine 3.14. * **26.05.21:** - Initial release.