システム`EnvironmentFile =`実行指定子拡張を使用しますか？

システムの実行(5)表現する以下は次のとおりですEnvironment=。

指定子拡張を実行します。 systemd.unit(5) の「指定子」セクションを参照してください。

システムの実行(5)表現する以下は次のとおりですEnvironmentFile=。

〜のようにEnvironment=

もしそうなら、systemdは実行指定子拡張を使用しますかEnvironmentFile=？

私はこれを予想しましたが、systemd 253.5でテストしたところ、これは使用されていませんEnvironmentFile=。

テストEnvironment=:

拡張するには：SECRET_FILE=/run/credentials/mycred1.service/mysecret

[root@mymachine:~]# systemctl cat mycred1.service 
# /etc/systemd/system/mycred1.service
[Unit]

[Service]
Environment="LOCALE_ARCHIVE=/nix/store/5l0qzzkb3r3yxygdq3688fjcc18lwg3j-glibc-locales-2.37-8/lib/locale/locale-archive"
Environment="PATH=/nix/store/f11ibsj5vmqcy8ihfa8mzvpfs4af7cw5-coreutils-9.1/bin:/nix/store/jvh4fbqfxwwn162k5hb8ndc4h5555wfa-findutils-4.9.0/bin:/nix/store/rn5b13lbsslbvmmbqnqxdcagzqp4435w-gnugrep-3.7/bin:/nix/store/w64nwxs3r6cyqgy6ssxib5i2r6k8yfc2-gnused-4.9/bin:/nix/store/8lgs0dqh9ks1164fp4g14gq7w1ihjbf0-systemd-253.5/bin:/nix/store/f11ibsj5vmqcy8ihfa8mzvpfs4af7cw5-coreutils-9.1/sbin:/nix/store/jvh4fbqfxwwn162k5hb8ndc4h5555wfa-findutils-4.9.0/sbin:/nix/store/rn5b13lbsslbvmmbqnqxdcagzqp4435w-gnugrep-3.7/sbin:/nix/store/w64nwxs3r6cyqgy6ssxib5i2r6k8yfc2-gnused-4.9/sbin:/nix/store/8lgs0dqh9ks1164fp4g14gq7w1ihjbf0-systemd-253.5/sbin"
Environment="TZDIR=/nix/store/4faw3w020cjxvd1dnxhg73mi10wcxvpw-tzdata-2023c/share/zoneinfo"



DynamicUser=true
Environment=SECRET_FILE=%d/mysecret
ExecStart=/nix/store/wa8vcqsc5la5yxhazrq5rxmzy1y2igaj-unit-script-mycred1-start/bin/mycred1-start 
LoadCredential=mysecret:/etc/hosts


[root@mymachine:~]# cat /nix/store/wa8vcqsc5la5yxhazrq5rxmzy1y2igaj-unit-script-mycred1-start/bin/mycred1-start
#!/nix/store/7q1b1bsmxi91zci6g8714rcljl620y7f-bash-5.2-p15/bin/bash
set -e
echo SECRET_FILE=${SECRET_FILE}



[root@mymachine:~]# systemctl start mycred1.service 

[root@mymachine:~]# systemctl status mycred1.service 
○ mycred1.service
     Loaded: loaded (/etc/systemd/system/mycred1.service; linked; preset: enabled)
     Active: inactive (dead)

Jul 18 07:24:21 mymachine systemd[1]: Started mycred1.service.
Jul 18 07:24:21 mymachine mycred1-start[4110]: SECRET_FILE=/run/credentials/mycred1.service/mysecret
Jul 18 07:24:21 mymachine systemd[1]: mycred1.service: Deactivated successfully.

テストEnvironmentFile=（ファイル内容の指定子）：

拡張なし：SECRET_FILE=%d/mysecret

[root@mymachine:~]# systemctl cat mycred2.service 
# /etc/systemd/system/mycred2.service
[Unit]

[Service]
Environment="LOCALE_ARCHIVE=/nix/store/5l0qzzkb3r3yxygdq3688fjcc18lwg3j-glibc-locales-2.37-8/lib/locale/locale-archive"
Environment="PATH=/nix/store/f11ibsj5vmqcy8ihfa8mzvpfs4af7cw5-coreutils-9.1/bin:/nix/store/jvh4fbqfxwwn162k5hb8ndc4h5555wfa-findutils-4.9.0/bin:/nix/store/rn5b13lbsslbvmmbqnqxdcagzqp4435w-gnugrep-3.7/bin:/nix/store/w64nwxs3r6cyqgy6ssxib5i2r6k8yfc2-gnused-4.9/bin:/nix/store/8lgs0dqh9ks1164fp4g14gq7w1ihjbf0-systemd-253.5/bin:/nix/store/f11ibsj5vmqcy8ihfa8mzvpfs4af7cw5-coreutils-9.1/sbin:/nix/store/jvh4fbqfxwwn162k5hb8ndc4h5555wfa-findutils-4.9.0/sbin:/nix/store/rn5b13lbsslbvmmbqnqxdcagzqp4435w-gnugrep-3.7/sbin:/nix/store/w64nwxs3r6cyqgy6ssxib5i2r6k8yfc2-gnused-4.9/sbin:/nix/store/8lgs0dqh9ks1164fp4g14gq7w1ihjbf0-systemd-253.5/sbin"
Environment="TZDIR=/nix/store/4faw3w020cjxvd1dnxhg73mi10wcxvpw-tzdata-2023c/share/zoneinfo"



DynamicUser=true
EnvironmentFile=/nix/store/x2ybfrhf1v3g7saadggkfap1134hnkv2-mysecret
ExecStart=/nix/store/prpm62xlw5q9lnrrxjkn8wqc3l7m9njy-unit-script-mycred2-start/bin/mycred2-start 
LoadCredential=mysecret:/etc/hosts


[root@mymachine:~]# cat /nix/store/x2ybfrhf1v3g7saadggkfap1134hnkv2-mysecret
SECRET_FILE=%d/mysecret

[root@mymachine:~]# cat /nix/store/prpm62xlw5q9lnrrxjkn8wqc3l7m9njy-unit-script-mycred2-start/bin/mycred2-start
#!/nix/store/7q1b1bsmxi91zci6g8714rcljl620y7f-bash-5.2-p15/bin/bash
set -e
echo SECRET_FILE=${SECRET_FILE}



[root@mymachine:~]# systemctl start mycred2.service 

[root@mymachine:~]# systemctl status mycred2.service 
○ mycred2.service
     Loaded: loaded (/etc/systemd/system/mycred2.service; linked; preset: enabled)
     Active: inactive (dead)

Jul 18 07:25:24 mymachine systemd[1]: Started mycred2.service.
Jul 18 07:25:24 mymachine mycred2-start[4186]: SECRET_FILE=%d/mysecret
Jul 18 07:25:24 mymachine systemd[1]: mycred2.service: Deactivated successfully.

EnvironmentFile=（ファイルパスの指定子）を使用してテストします。

拡張なし：Failed to load environment files: No such file or directory

[root@mymachine:~]# systemctl cat mycred3.service 
# /etc/systemd/system/mycred3.service
[Unit]

[Service]
Environment="LOCALE_ARCHIVE=/nix/store/5l0qzzkb3r3yxygdq3688fjcc18lwg3j-glibc-locales-2.37-8/lib/locale/locale-archive"
Environment="PATH=/nix/store/f11ibsj5vmqcy8ihfa8mzvpfs4af7cw5-coreutils-9.1/bin:/nix/store/jvh4fbqfxwwn162k5hb8ndc4h5555wfa-findutils-4.9.0/bin:/nix/store/rn5b13lbsslbvmmbqnqxdcagzqp4435w-gnugrep-3.7/bin:/nix/store/w64nwxs3r6cyqgy6ssxib5i2r6k8yfc2-gnused-4.9/bin:/nix/store/8lgs0dqh9ks1164fp4g14gq7w1ihjbf0-systemd-253.5/bin:/nix/store/f11ibsj5vmqcy8ihfa8mzvpfs4af7cw5-coreutils-9.1/sbin:/nix/store/jvh4fbqfxwwn162k5hb8ndc4h5555wfa-findutils-4.9.0/sbin:/nix/store/rn5b13lbsslbvmmbqnqxdcagzqp4435w-gnugrep-3.7/sbin:/nix/store/w64nwxs3r6cyqgy6ssxib5i2r6k8yfc2-gnused-4.9/sbin:/nix/store/8lgs0dqh9ks1164fp4g14gq7w1ihjbf0-systemd-253.5/sbin"
Environment="TZDIR=/nix/store/4faw3w020cjxvd1dnxhg73mi10wcxvpw-tzdata-2023c/share/zoneinfo"



EnvironmentFile=%d/myenv
ExecStart=/nix/store/779g5cfp6yq0lcpd4snmikxk1bkvfh4n-unit-script-mycred3-start/bin/mycred3-start 
LoadCredential=myenv:/etc/myenv


[root@mymachine:~]# l /etc/myenv
-rw-r--r-- 1 root root 23 2023-07-18 08:33:21 /etc/myenv

[root@mymachine:~]# cat /etc/myenv
SECRET_FILE=/etc/hosts

[root@mymachine:~]# cat /nix/store/779g5cfp6yq0lcpd4snmikxk1bkvfh4n-unit-script-mycred3-start/bin/mycred3-start
#!/nix/store/7q1b1bsmxi91zci6g8714rcljl620y7f-bash-5.2-p15/bin/bash
set -e
echo SECRET_FILE=${SECRET_FILE}



[root@mymachine:~]# systemctl start mycred3.service 
Job for mycred3.service failed because of unavailable resources or another system error.
See "systemctl status mycred3.service" and "journalctl -xeu mycred3.service" for details.

[root@mymachine:~]# systemctl status mycred3.service 
× mycred3.service
     Loaded: loaded (/etc/systemd/system/mycred3.service; linked; preset: enabled)
     Active: failed (Result: resources)
         IP: 0B in, 0B out
        CPU: 0

Jul 18 08:34:59 mymachine systemd[1]: mycred3.service: Failed to load environment files: No such file or directory
Jul 18 08:34:59 mymachine systemd[1]: mycred3.service: Failed to run 'start' task: No such file or directory
Jul 18 08:34:59 mymachine systemd[1]: mycred3.service: Failed with result 'resources'.
Jul 18 08:34:59 mymachine systemd[1]: Failed to start mycred3.service.