在cron中看不到的环境变量

Question

So I've run into a bit of an issue. My workplace uses environmental variables on it's machines and we've recently switched our dev / prod servers to unix-based solutions (RHEL 6) and we're trying to get some of our old programs to run with a cron. The envir variables are running on the box itself (Example: Server1=dev-server.intranet.net or something along those lines) but we're running into issues where a cron is in place.

Example.

java -jar MyProgram.jar -- Works fine

MyProg.sh - Works fine

JAVA_HOME=/usr/data/java/current
PATH=$JAVA_HOME/bin

export JAVA_HOME
export PATH

java -jar /usr/data/apps/MyProg/MyProg.jar

When calling MyProg.sh from a cron, it doesn't work, as it can't see the envir variables at all.

Can someone offer some insight to how to make this work with a cron?

Thanks.

Answer 1

JAVA_HOME and PATH doesn't need to be set

Can you try

/usr/data/java/current/java -jar /usr/data/apps/MyProg/MyProg.jar

Answer 2

I ended up solving this problem by doing a

source /etc/profile.d/MyVars.sh

which got my environmental variables back in place.

Answer 3

Cron always runs with a mostly empty environment. HOME, LOGNAME, and SHELL are set; and a very limited PATH.

In order to available all environment variable, We need to load ~/.profile file before running given command.

In my case i used below commands.

40 11 * * * . $HOME/.profile; /shellPath/bin/execute-job.sh START 5 >> /home/sampleuser/cron.log 2>&1

execute-job.sh

nohup java -Dlog4j.configuration=file:/shellPath/conf/log4j.properties -cp /shellPath/libs/scheduler-0.1.jar  com.scheduler.Scheduler $1 $2 > /dev/null 2>&1 &