diff --git a/zookeeper/content.md b/zookeeper/content.md index 96a332509060..67fce24545da 100644 --- a/zookeeper/content.md +++ b/zookeeper/content.md @@ -152,12 +152,20 @@ This image is configured with volumes at `/data` and `/datalog` to hold the Zook ## How to configure logging -By default, ZooKeeper redirects stdout/stderr outputs to the console. You can redirect to a file located in `/logs` by passing environment variable `ZOO_LOG4J_PROP` as follows: +By default, ZooKeeper redirects stdout/stderr outputs to the console. Since 3.8 ZooKeeper is shipped with [LOGBack](https://logback.qos.ch/) as the logging backend. The ZooKeeper default `logback.xml` file resides in the `/conf` directory. To override default logging configuration mount your custom config as a volume: ```console -$ docker run --name some-zookeeper --restart always -e ZOO_LOG4J_PROP="INFO,ROLLINGFILE" %%IMAGE%% +$ docker run --name some-zookeeper --restart always -d -v $(pwd)/logback.xml:/conf/logback.xml %%IMAGE%% ``` -This will write logs to `/logs/zookeeper.log`. Check [ZooKeeper Logging](https://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_logging) for more details. +Check [ZooKeeper Logging](https://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_logging) for more details. + +### Logging in 3.7 + +You can redirect to a file located in `/logs` by passing environment variable `ZOO_LOG4J_PROP` as follows: + +```console +$ docker run --name some-zookeeper --restart always -e ZOO_LOG4J_PROP="INFO,ROLLINGFILE" %%IMAGE%% +``` -This image is configured with a volume at `/logs` for your convenience. +This will write logs to `/logs/zookeeper.log`. This image is configured with a volume at `/logs` for your convenience.