问题
遇到因环境变量冲突导致日志下载失败，该如何处理？
回答
- 确认是否是因环境变量冲突导致的日志下载失败：
- OMS节点上部署有MPPDBServer实例。
- 下载日志时出现如下报错提示：
- 以omm用户后台登录OMS主节点，执行echo $PATH，可看到MPPDB对应gaussdb的bin路径与OMS对应Gaussdb的bin如下图所示：
/opt/huawei/Bigdata/mppdb/core/bin:/opt/huawei/Bigdata/mppdb/wisequery/pssh-2.3.1/bin:/opt/huawei/Bigdata/mppdb/wisequery/script:/opt/huawei/Bigdata/om-server_6.5.1/OMS/tools:/opt/huawei/Bigdata/om-server_6.5.1/OMS/gaussdb/bin:/opt/huawei/Bigdata/common/runtime/jdk-8u181/:/opt/huawei/Bigdata/common/runtime0/jdk-8u181/bin/:/opt/huawei/Bigdata/common/runtime0/jdk-8u181/:/opt/huawei/Bigdata/common/runtime0/jdk-8u181/bin/:/opt/huawei/Bigdata/om-server_6.5.1/OMS/tools:/opt/huawei/Bigdata/om-server_6.5.1/OMS/gaussdb/bin:/opt/huawei/Bigdata/common/runtime/jdk-8u181/:/opt/huawei/Bigdata/common/runtime0/jdk-8u181/bin/:/opt/huawei/Bigdata/om-server_6.5.1/OMS/tools:/opt/huawei/Bigdata/om-server_6.5.1/OMS/gaussdb/bin:/opt/huawei/Bigdata/common/runtime/jdk-8u181/:/opt/huawei/Bigdata/common/runtime0/jdk-8u181/bin/:/opt/huawei/Bigdata/common/runtime0/jdk-8u181/:/opt/huawei/Bigdata/common/runtime0/jdk-8u181/bin/:/opt/huawei/Bigdata/om-server_6.5.1/OMS/tools:/opt/huawei/Bigdata/om-server_6.5.1/OMS/gaussdb/bin:/opt/huawei/Bigdata/common/runtime/jdk-8u181/:/opt/huawei/Bigdata/common/runtime0/jdk-8u181/bin/:/usr/lib64/qt3/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/opt/huawei/Bigdata/om-agent_6.5.1/OMA/tools:/usr/sbin:/usr/bin:/home/omm/bin:/opt/huawei/Bigdata/om-agent_6.5.1/OMA/tools:/usr/sbin:/usr/bin
- 以omm用户登录主OMS节点，执行命令：
注意：请重新用远程工具新开一个窗口，连接OMS主节点，执行以下操作。
sh ${BIGDATA_HOME}/om-server/om/sbin/restart-controller.sh
