Long-Term Supported Versions

    Environment Variable Persisting

    Function Description

    In a system container, you can make the env variable persistent to the configuration file in the rootfs directory of the container by specifying the --env-target-file interface parameter.

    Parameter Description



    Value Description

    isula create/run


    • Variable of the string type.
    • The env persistent file must be in the rootfs directory and must be an absolute path.


    • If the target file specified by --env-target-file exists, the size cannot exceed 10 MB.
    • The parameter specified by --env-target-file must be an absolute path in the rootfs directory.
    • If the value of --env conflicts with that of env in the target file, the value of --env prevails.


    Start a system container and specify the env environment variable and --env-target-file parameter.

    [root@localhost ~]# isula run -tid -e abc=123 --env-target-file /etc/environment --system-container --external-rootfs /root/myrootfs none init
    [root@localhost ~]# isula exec b7 cat /etc/environment

    The preceding information indicates that the env variable (abc=123) of the container has been made persistent to the /etc/environment configuration file.

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    Buggy Content

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    Bug Type
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