[FLINK-29269][ci] Setup logging
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 780b792..3700352 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -45,4 +45,4 @@
maven-version: 3.8.5
- name: Compile and test flink-connector-elasticsearch
- run: mvn clean install -Dscala-2.12 -Dflink.convergence.phase=install -Pcheck-convergence -U -B ${{ env.MVN_CONNECTION_OPTIONS }}
+ run: mvn clean install -Dscala-2.12 -Dflink.convergence.phase=install -Pcheck-convergence -U -B ${{ env.MVN_CONNECTION_OPTIONS }} -Dlog4j.configurationFile=file://$(pwd)/tools/ci/log4j.properties
diff --git a/tools/ci/log4j.properties b/tools/ci/log4j.properties
new file mode 100644
index 0000000..86b02cc
--- /dev/null
+++ b/tools/ci/log4j.properties
@@ -0,0 +1,43 @@
+################################################################################
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+################################################################################
+
+rootLogger.level = INFO
+rootLogger.appenderRef.out.ref = FileAppender
+
+# -----------------------------------------------------------------------------
+# Console (use 'console')
+# -----------------------------------------------------------------------------
+
+appender.console.name = ConsoleAppender
+appender.console.type = CONSOLE
+appender.console.layout.type = PatternLayout
+appender.console.layout.pattern = %d{HH:mm:ss,SSS} [%20t] %-5p %-60c %x - %m%n
+
+# -----------------------------------------------------------------------------
+# File (use 'file')
+# -----------------------------------------------------------------------------
+appender.file.name = FileAppender
+appender.file.type = FILE
+appender.file.fileName = ${sys:log.dir}/mvn-${sys:mvn.forkNumber:-output}.log
+appender.file.layout.type = PatternLayout
+appender.file.layout.pattern = %d{HH:mm:ss,SSS} [%20t] %-5p %-60c %x - %m%n
+appender.file.createOnDemand = true
+
+# suppress the irrelevant (wrong) warnings from the netty channel handler
+logger.netty.name = org.jboss.netty.channel.DefaultChannelPipeline
+logger.netty.level = ERROR
