linux - jar 文件的 Systemd 服务在几分钟后出现 "operation timed out"错误或停留在 "activating mode"

Question

服务单位是:

[Unit]
Description=test
After=syslog.target
After=network.target

[Service]
Type=forking
ExecStart=/bin/java -jar /home/ec2-user/test.jar
TimeoutSec=300

[Install]
WantedBy=multi-user.target

它开始正常运行 1-4 分钟。但后来失败了:

尾部/var/log/messages:

Feb 27 18:43:44 ip-172-31-40-48 systemd: Reloading.
Feb 27 18:44:06 ip-172-31-40-48 systemd: Starting test...
Feb 27 18:44:06 ip-172-31-40-48 java: 5.1.73
Feb 27 18:44:06 ip-172-31-40-48 java: Starting the internal [HTTP/1.1] server on port 8182
Feb 27 18:49:06 ip-172-31-40-48 systemd: test.service operation timed out.Terminating.
Feb 27 18:49:06 ip-172-31-40-48 systemd: test.service: control process exited, code=exited status=143
Feb 27 18:49:06 ip-172-31-40-48 systemd: Failed to start test.
Feb 27 18:49:06 ip-172-31-40-48 systemd: Unit test.service entered failed state.

systemctl status test.service(重启时 - 保持激活模式):

test.service - Setsnew
Loaded: loaded (/etc/systemd/system/test.service; enabled)
Active: activating (start) since Sun 2015-03-01 14:29:36 EST; 2min 30s ago
Control: 32462 (java)
CGroup: /system.slice/test.service

systemctl status test.service(失败后):

test.service - test
Loaded: loaded (/etc/systemd/system/test.service; enabled)
Active: failed (Result: exit-code) since Fri 2015-02-27 18:49:06 EST; 18min ago
Process: 27954 ExecStart=/bin/java -jar /home/ec2-user/test.jar (code=exited, status=143)

• 在命令行中运行 jar 时它工作正常。
• 尝试更改 jar 位置，因为我认为这是权限问题
• selinux 已关闭

我该如何解决这个问题，以便我可以在启动时启动 jar？还有其他选择吗？ (RHEL7 不包含服务命令)

Answer 1

您创建了服务类型forking，但此服务没有fork。它只是直接运行。因此 systemd 等了五分钟让程序自行守护，但它从未这样做过。这种服务的正确类型是 simple。

您还禁用了 SELinux，这是您应该解决的另一个问题。