<div dir="ltr"><div><pre style="font-size:9pt"><pre style="font-size:9pt">I am having a unit file like below running on Ubuntu 16.04 with systemd version 229.</pre><pre style="color:rgb(0,0,0);font-family:Menlo;font-size:9pt">[Unit] Description=Hadoop-Yarn-Resourcemanager Service [Service] Type=simple Environment=JAVA_HOME=/usr/lib/jvm/jdk1.8 Environment=YARN_USER=yarn Environment=YARN_IDENT_STRING=yarn Environment=YARN_PID_DIR=/var/run/hadoop-yarn Environment=YARN_LOG_DIR=/var/log/hadoop-yarn Environment=YARN_CONF_DIR=/etc/hadoop/conf Environment=HADOOP_LIBEXEC_DIR=/usr/lib/hadoop/libexec IgnoreSIGPIPE=false ExecStart=/home/ubuntu/build-target/cdh/yarn-rm/hadoop-yarn-resourcemanager-sysd-start.sh ExecStopPost=-/bin/bash /home/ubuntu/build-target/cdh/yarn-rm/hadoop-yarn-resourcemanager-sysd-poststop.sh ExecStopPost=-/bin/sleep 1 RestartSec=2s Restart=always [Install] WantedBy=multi-user.target </pre><pre style="font-size:9pt"><pre style="font-size:9pt">hadoop-yarn-resourcemanager-sysd-start.sh looks like below</pre><pre style="color:rgb(0,0,0);font-size:9pt"><pre style="font-family:Menlo;font-size:9pt">#!/bin/bash</pre><pre style="font-size:9pt">echo "Running pre-steps for hadoop-yarn-resourcemanager" sudo mkdir -p $YARN_LOG_DIR sudo chown -R yarn:hadoop $YARN_LOG_DIR sudo mkdir -p $YARN_PID_DIR sudo chown yarn:yarn $YARN_PID_DIR echo "Starting hadoop-yarn-resourcemanager" sudo -u yarn /usr/lib/hadoop-yarn/sbin/yarn-daemon.sh start resourcemanager sleep 3 echo "Starting health check for hadoop-yarn-resourcemanager" /home/ubuntu/build-target/cdh/yarn-rm/hadoop-yarn-resourcemanager-sysd-health.sh res=$? sleep 1 exit $res <pre style="font-size:9pt">yarn-daemon.sh has code like below</pre><pre style="font-family:Menlo;font-size:9pt">#!/usr/bin/env bash </pre><pre style="font-family:Menlo;font-size:9pt">echo "debrah $YARN_LOG_DIR $HADOOP_LIBEXEC_DIR" </pre><pre style="font-family:Menlo;font-size:9pt">...</pre><pre style="font-family:Menlo;font-size:9pt"> </pre><pre style="font-size:9pt">But I am observing the environment variable values are not getting passed to yarn-daemon.sh. Below are the logs</pre><pre style="font-family:Menlo;font-size:9pt">Aug 21 16:06:14 vrni-platform systemd[1]: Stopped Hadoop-Yarn-Resourcemanager Service. Aug 21 16:06:14 vrni-platform systemd[1]: Started Hadoop-Yarn-Resourcemanager Service. Aug 21 16:06:14 vrni-platform hadoop-yarn-resourcemanager-sysd-start.sh[12333]: + echo 'Running pre-steps for hadoop-yarn-resourcemanager' Aug 21 16:06:14 vrni-platform hadoop-yarn-resourcemanager-sysd-start.sh[12333]: Running pre-steps for hadoop-yarn-resourcemanager Aug 21 16:06:14 vrni-platform hadoop-yarn-resourcemanager-sysd-start.sh[12333]: + sudo mkdir -p /var/log/hadoop-yarn Aug 21 16:06:14 vrni-platform hadoop-yarn-resourcemanager-sysd-start.sh[12333]: + sudo chown -R yarn:hadoop /var/log/hadoop-yarn Aug 21 16:06:14 vrni-platform hadoop-yarn-resourcemanager-sysd-start.sh[12333]: + sudo mkdir -p /var/run/hadoop-yarn Aug 21 16:06:14 vrni-platform hadoop-yarn-resourcemanager-sysd-start.sh[12333]: + sudo chown yarn:yarn /var/run/hadoop-yarn Aug 21 16:06:14 vrni-platform hadoop-yarn-resourcemanager-sysd-start.sh[12333]: + echo 'Starting hadoop-yarn-resourcemanager' Aug 21 16:06:14 vrni-platform hadoop-yarn-resourcemanager-sysd-start.sh[12333]: Starting hadoop-yarn-resourcemanager Aug 21 16:06:14 vrni-platform hadoop-yarn-resourcemanager-sysd-start.sh[12333]: + sudo -u yarn /usr/lib/hadoop-yarn/sbin/yarn-daemon.sh start resourcemanager Aug 21 16:06:14 vrni-platform hadoop-yarn-resourcemanager-sysd-start.sh[12333]: debrah </pre>Can someone let me know what is the correct way to declare the enviroment variable so that it gets passed to a child script started by a systemd service?</pre></pre></pre><pre style="color:rgb(0,0,0);font-family:Menlo;font-size:9pt"> </pre></pre></div></div>