如何将 systemd 服务的输出重定向到文件 [英] How to redirect output of systemd service to a file

问题描述

我正在尝试将 systemd 服务的输出重定向到一个文件，但它似乎不起作用:

I am trying to redirect output of a systemd service to a file but it doesn't seem to work:

[Unit]
Description=customprocess
After=network.target

[Service]
Type=forking
ExecStart=/usr/local/bin/binary1 agent -config-dir /etc/sample.d/server
StandardOutput=/var/log1.log
StandardError=/var/log2.log
Restart=always

[Install]
WantedBy=multi-user.target

请纠正我的做法.

推荐答案

我认为有一个更优雅的方法来解决这个问题:使用标识符将 stdout/stderr 发送到 syslog 并指示您的 syslog 管理器按程序拆分其输出名字.

I think there's a more elegant way to solve the problem: send the stdout/stderr to syslog with an identifier and instruct your syslog manager to split its output by program name.

在您的 systemd 服务单元文件中使用以下属性:

Use the following properties in your systemd service unit file:

StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=<your program identifier> # without any quote

然后，假设您的发行版使用 rsyslog 来管理 syslog，请在 /etc/rsyslog.d/.conf 中创建一个文件，内容如下:

Then, assuming your distribution is using rsyslog to manage syslogs, create a file in /etc/rsyslog.d/<new_file>.conf with the following content:

if $programname == '<your program identifier>' then /path/to/log/file.log
& stop

现在使日志文件可由 syslog 写入:

Now make the log file writable by syslog:

# ls -alth /var/log/syslog 
-rw-r----- 1 syslog adm 439K Mar  5 19:35 /var/log/syslog
# chown syslog:adm /path/to/log/file.log

重启 rsyslog (sudo systemctl restart rsyslog) 并享受吧！您的程序 stdout/stderr 仍可通过 journalctl (sudo journalctl -u <您的程序标识符>) 访问，但它们也将在您选择的文件中可用.

Restart rsyslog (sudo systemctl restart rsyslog) and enjoy! Your program stdout/stderr will still be available through journalctl (sudo journalctl -u <your program identifier>) but they will also be available in your file of choice.

来源来自archive.org

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