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I searching now already for more then 2 hours..

A time ago i made an systemd service for an PHP app. This worked great untill yesterday morning. The service stopped working on boot and the command 'sudo systemctl start TcpSocket' doesn't work either, it shows the blinking cursor and i have to exit it with ctrl+c.

Running the app with the command 'php /home/ttn-admin/Scripts/TcpSocket.php' works without problems.

Content of the service file:

[Unit]
Description=TcpSocket Service
After=multi-user.target

[Service]
Type=idle
ExecStart=/usr/bin/php /home/ttn-admin/Scripts/TcpSocket.php

[Install]
WantedBy=multi-user.target

the command 'journalctl -u TcpSocket.service -f -n100' shows only untill yesterday morning.

I don't know where to look anymore and why it stopped working after some years...

Thanks.

Edit 1:

Output of 'systemctl status TcpSocket':

TcpSocket.service - TcpSocket Service Loaded: loaded (/usr/lib/systemd/system/TcpSocket.service; disabled; vendor preset: disabled) Active: inactive (dead)

Output of 'systemctl status':

ttn-server
    State: starting
     Jobs: 16 queued
   Failed: 0 units
    Since: Tue 2023-01-10 13:07:37 UTC; 51s ago
   CGroup: /
           ├─user.slice 
           │ └─user-0.slice 
           │   ├─session-1.scope 
           │   │ ├─ 1317 /usr/libexec/cockpit-session localhost
           │   │ ├─ 1331 cockpit-bridge
           │   │ ├─ 1352 /usr/libexec/cockpit-pcp
           │   │ ├─ 1374 /bin/bash
           │   │ ├─ 1402 systemctl status
           │   │ └─ 1403 less
           │   └─[email protected] …
           │     ├─session.slice 
           │     │ └─dbus-broker.service 
           │     │   ├─ 1366 /usr/bin/dbus-broker-launch --scope user
           │     │   └─ 1370 dbus-broker --log 4 --controller 9 --machine-id b5d31d5285d04f3abc6786e2fd9dd45e --max-bytes 100000000000000 --max>
           │     └─init.scope 
           │       ├─ 1322 /usr/lib/systemd/systemd --user
           │       └─ 1323 (sd-pam)
           ├─init.scope 
           │ └─ 1 /usr/lib/systemd/systemd rhgb --switched-root --system --deserialize 31
           └─system.slice 
             ├─irqbalance.service 
             │ └─ 766 /usr/sbin/irqbalance --foreground
             ├─abrt-journal-core.service 
             │ └─ 791 /usr/bin/abrt-dump-journal-core -D -T -f -e
             ├─packagekit.service 
             │ └─ 1369 /usr/libexec/packagekitd
             ├─systemd-udevd.service 
             │ └─ 623 /usr/lib/systemd/systemd-udevd
             ├─dbus-broker.service 
             │ ├─ 760 /usr/bin/dbus-broker-launch --scope system --audit
             │ └─ 762 dbus-broker --log 4 --controller 9 --machine-id b5d31d5285d04f3abc6786e2fd9dd45e --max-bytes 536870912 --max-fds 4096 --m>
             ├─systemd-homed.service 
             │ └─ 771 /usr/lib/systemd/systemd-homed
             ├─mariadb.service 
             │ └─ 901 /usr/libexec/mariadbd --basedir=/usr
             ├─polkit.service 
             │ └─ 768 /usr/lib/polkit-1/polkitd --no-debug
             ├─realmd.service 
             │ └─ 1357 /usr/libexec/realmd
             ├─systemd-timedated.service 
             │ └─ 1358 /usr/lib/systemd/systemd-timedated
             ├─chronyd.service 
             │ └─ 776 /usr/sbin/chronyd -F 2
             ├─auditd.service 
             │ ├─ 727 /sbin/auditd
             │ └─ 729 /usr/sbin/sedispatch
             ├─php-fpm.service 
             │ ├─ 813 php-fpm: master process (/etc/php-fpm.conf)
             │ ├─ 831 php-fpm: pool www
             │ ├─ 832 php-fpm: pool www
             │ ├─ 833 php-fpm: pool www
             │ ├─ 834 php-fpm: pool www
             │ └─ 835 php-fpm: pool www
             ├─abrt-xorg.service 
             │ └─ 793 /usr/bin/abrt-dump-journal-xorg -fxtD
             ├─ModemManager.service 
             │ └─ 796 /usr/sbin/ModemManager
             ├─systemd-journald.service 
             │ └─ 611 /usr/lib/systemd/systemd-journald
             ├─atd.service 
             │ └─ 1020 /usr/sbin/atd -f
             ├─sshd.service 
             │ └─ 819 sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups
             ├─crond.service 
             │ └─ 1031 /usr/sbin/crond -n
             ├─NetworkManager.service 
             │ └─ 804 /usr/sbin/NetworkManager --no-daemon
             ├─cockpit.service 
             │ └─ 1303 /usr/libexec/cockpit-tls
             ├─systemd-hostnamed.service 
             │ └─ 1342 /usr/lib/systemd/systemd-hostnamed
             ├─gssproxy.service 
             │ └─ 821 /usr/sbin/gssproxy -D
             ├─rsyslog.service 
             │ └─ 769 /usr/sbin/rsyslogd -n
             ├─abrtd.service 
             │ └─ 773 /usr/sbin/abrtd -d -s
             ├─firewalld.service 
             │ └─ 797 /usr/bin/python3 -s /usr/sbin/firewalld --nofork --nopid
             ├─systemd-userdbd.service 
             │ ├─ 726 /usr/lib/systemd/systemd-userdbd
             │ ├─ 733 systemd-userwork
             │ ├─ 734 systemd-userwork
             │ └─ 735 systemd-userwork
             ├─system-cockpithttps.slice 
             │ └─cockpit-wsinstance-https@e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855.service 
             │   ├─ 1309 /usr/libexec/cockpit-ws --for-tls-proxy --port=0
             │   └─ 1319 /usr/bin/ssh-agent
             ├─httpd.service 
             │ ├─ 1000 /usr/sbin/httpd -DFOREGROUND
             │ ├─ 1089 /usr/sbin/httpd -DFOREGROUND
             │ ├─ 1090 /usr/sbin/httpd -DFOREGROUND
             │ ├─ 1091 /usr/sbin/httpd -DFOREGROUND
             │ └─ 1094 /usr/sbin/httpd -DFOREGROUND
             ├─systemd-oomd.service 
             │ └─ 724 /usr/lib/systemd/systemd-oomd
             ├─mcelog.service 
             │ └─ 767 /usr/sbin/mcelog --daemon --foreground
             ├─systemd-resolved.service 
             │ └─ 725 /usr/lib/systemd/systemd-resolved
             ├─pmcd.service 
             │ ├─ 1004 /usr/bin/sh /usr/libexec/pcp/lib/pmcd start-systemd
             │ └─ 1297 /usr/libexec/pcp/bin/pmcd_wait
             ├─system-getty.slice 
             │ └─[email protected] 
             │   └─ 1059 /sbin/agetty -o -p -- \u --noclear tty1 linux
             ├─smartd.service 
             │ └─ 770 /usr/sbin/smartd -n -q never --capabilities=mail
             ├─systemd-logind.service 
             │ └─ 772 /usr/lib/systemd/systemd-logind
             └─abrt-oops.service 
               └─ 792 /usr/bin/abrt-dump-journal-oops -fxtD
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  • If you run systemctl status to get the overall status of the system, does the second line say State: running or something different? If it says State: degraded, it means one or more services have failed (run systemctl without any parameters to see which one(s)). Since your service type is idle, your service may start only after every other service has successfully started... and if there is a problem with another service, might not start at all. It sort of seems like the system is waiting for something to complete, but it doesn't.
    – telcoM
    Jan 10, 2023 at 12:51
  • systemctl status gives this reponse: ○ TcpSocket.service - TcpSocket Service Loaded: loaded (/usr/lib/systemd/system/TcpSocket.service; disabled; vendor preset: disabled) Active: inactive (dead)
    – K.ZItz
    Jan 10, 2023 at 12:53
  • I also changed the type to 'simple', this doesn't work either..
    – K.ZItz
    Jan 10, 2023 at 12:53
  • Can the system resolve hostnames, especially its own name? If there is a problem with hostname resolution, it would cause a lot of services to work sluggishly. Also you did not answer my question: was the overall system state running or degraded, and if degraded, which services have failed?
    – telcoM
    Jan 10, 2023 at 12:59
  • Add that information to the question so that it doesn't get lost in the comments. If it is showing as disabled, then that is one reason that it doesn't start at boot. Also, run the command manually without the service and look at the output. You can also append the output to a file and then examine it later to see what's going on. Jan 10, 2023 at 13:02

1 Answer 1

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This case is solved, another service was in the activating state. This was the reason my own service didn't start.

I masked the services 'pmcd' and 'pmlogger' wit systemctl mask command

Thanks to all helpers :D

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