去哪里找环境variables？

当我在go-agent上执行printenv命令时 

go@05f749b73185:/tmp$ printenv HOSTNAME=05f749b73185 SHELL=/bin/bash USER=go LS_COLORS= MAVEN_VERSION=3.3.9 MAIL=/var/mail/go PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games MAVEN_HOME=/usr/share/maven PWD=/tmp JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/ LANG=en_US.UTF-8 HOME=/var/go SHLVL=2 LOGNAME=go LC_CTYPE=en_US.UTF-8 LESSOPEN=| /usr/bin/lesspipe %s LESSCLOSE=/usr/bin/lesspipe %s %s _=/usr/bin/printenv

但是当我从一个工作中执行printenv命令时，我得到了这个结果 

 06:57:26.482 [go] Start to execute task: <exec command="printenv" />. 06:57:26.493 GO_SERVER_URL=https://go-server:8154/go/ 06:57:26.493 JAVA_HOME=/usr/lib/jvm/java-7-openjdk-amd64/jre 06:57:26.494 SHLVL=2 06:57:26.494 MAVEN_HOME=/usr/share/maven 06:57:26.495 LOG_DIR=/var/log/go-agent 06:57:26.495 GO_TRIGGER_USER=anonymous 06:57:26.495 GO_SERVER=go-server 06:57:26.496 GO_PIPELINE_LABEL=8 06:57:26.496 GO_STAGE_NAME=build 06:57:26.497 HOSTNAME=05f749b73185 06:57:26.497 PWD=/var/lib/go-agent 06:57:26.498 GO_STAGE_COUNTER=1 06:57:26.498 AGENT_WORK_DIR=/var/lib/go-agent 06:57:26.499 GO_JOB_NAME=Compile 06:57:26.499 MAVEN_VERSION=3.3.9 06:57:26.499 OLDPWD=/etc/service/go-agent 06:57:26.500 LC_CTYPE=en_US.UTF-8 06:57:26.500 AGENT_STARTUP_ARGS=-Dcruise.console.publish.interval=10 -Xms128m -Xmx256m -Djava.security.egd=file:/dev/./urandom 06:57:26.501 GO_FROM_REVISION=b6f8f0f3bedabe1cc0ffa1334c290f32da723cde 06:57:26.501 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin 06:57:26.501 GO_TO_REVISION=b6f8f0f3bedabe1cc0ffa1334c290f32da723cde 06:57:26.502 USER=go 06:57:26.502 GO_SERVER_PORT=8153 06:57:26.502 GO_PIPELINE_NAME=DropwizardSeed 06:57:26.503 HOME=/var/go 06:57:26.503 UID=103 06:57:26.503 GO_ENVIRONMENT_NAME=local 06:57:26.506 INITRD=no 06:57:26.507 GO_PIPELINE_COUNTER=8 06:57:26.508 GO_REVISION=b6f8f0f3bedabe1cc0ffa1334c290f32da723cde 06:57:26.509 LANG=en_US.UTF-8

如果您查看JAVA_HOME环境variables，则在login计算机时，作业调用和调用之间会有所不同。 这可以通过在pipe道中设置环境variables来解决，但是如何configuration我的去服务器和去代理，所以我不必这样做呢？ 如果我想将另一个JDK用作默认值，该怎么办？

JAVA_HOME环境variables来自哪里？

你检查了/etc/default/<agent-name>
在这个文件中，你可以定义代理的默认值，也可以使用export命令定义环境variables。

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