github.com/coreos/rocket@v1.30.1-0.20200224141603-171c416fac02/Documentation/app-environment.md (about)

     1  ## App Environment
     2  
     3  Apps launched by rkt have access to some basic devices and file systems as defined by the App Container spec in the [OS-SPEC][os-spec] section.
     4  
     5  In addition to the basic devices and file systems mandated by the App Container spec, rkt gives access to the following files.
     6  
     7  #### /etc/hosts
     8  
     9  Support for /etc/hosts is optional in the App Container spec. rkt creates it.
    10  
    11  #### /etc/resolv.conf
    12  
    13  `/etc/resolv.conf` is automatically [prepared by rkt][networking-dns].
    14  
    15  #### /run/systemd/journal
    16  
    17  Since rkt v1.2.0, rkt gives access to systemd-journald's sockets in the /run/systemd/journal directory:
    18  - /run/systemd/journal/dev-log
    19  - /run/systemd/journal/socket
    20  - /run/systemd/journal/stdout
    21  
    22  #### /dev/log
    23  
    24  Since rkt v1.2.0, if /dev/log does not exist in the image, it will be created as a symlink to /run/systemd/journal/dev-log.
    25  
    26  [networking-dns]: networking/dns.md
    27  [os-spec]: https://github.com/appc/spec/blob/master/spec/OS-SPEC.md