systemd 下的 git-daemon：基本路徑不存在或不是目錄

我正在嘗試git使用git-daemon. 如果我從命令行執行 git-daemon 它會按預期工作：

$ /usr/libexec/git-core/git-daemon --export-all --base-path=/var/opt/gitlab/git-data/repositories --syslog --verbose

$ git ls-remote git://localhost/cm/test_project.git
9cbff8accfa291ffeb8189f114c6d290a3856511        HEAD
2817d289674481ef02f05c3558063a5239d844b2        refs/heads/develop2
9cbff8accfa291ffeb8189f114c6d290a3856511        refs/heads/master
bce85bd749a69cb127bdb0e64c173e926eb77cbc        refs/heads/old-master
$

但是，如果我git-daemon作為systemd單元執行，則會收到以下錯誤：

$ git ls-remote git://localhost/cm/test_project.git
fatal: read error: Connection reset by peer
$

並在日誌中：

git-daemon[19089]: base-path '/var/opt/gitlab/git-data/repositories' does not exist or is not a directory

我有以下設置：

git-daemon.socket：

$ cat /etc/systemd/system/git-daemon.socket
[Unit]
Description=Git Activation Socket

[Socket]
ListenStream=0.0.0.0:9418
Accept=true

[Install]
WantedBy=sockets.target
$

git-daemon@.service：

$ cat /etc/systemd/system/git-daemon@.service
[Unit]
Description=Git Repositories Server Daemon
Documentation=man:git-daemon(1)

[Service]
User=nobody
ExecStart=-/usr/libexec/git-core/git-daemon --export-all --base-path=/var/opt/gitlab/git-data/repositories --syslog --verbose
StandardInput=socket
$

埠9418可用：

$ netstat -nap | grep 9418
tcp        0      0 0.0.0.0:9418            0.0.0.0:*               LISTEN      1/systemd
$

目錄存在：

$ stat /var/opt/gitlab/git-data/repositories
 File: ‘/var/opt/gitlab/git-data/repositories’
 Size: 4096            Blocks: 8          IO Block: 4096   directory
Device: fc01h/64513d    Inode: 226543354   Links: 46
Access: (2770/drwxrws---)  Uid: (  500/     git)   Gid: (  500/     git)
Access: 2017-06-09 13:13:16.514659543 +0000
Modify: 2017-04-22 23:28:16.227301854 +0000
Change: 2017-04-22 23:28:16.227301854 +0000
Birth: -
$

作業系統是CentOS 7，git版本是1.8.3.1

$ cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
$ git --version
git version 1.8.3.1
$

有人可以幫忙嗎？

我發現User=nobody必須將其更改為User=git/etc/systemd/system/git-daemon@.service才能解決問題。

引用自：https://serverfault.com/questions/854885