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systemctl --user status
Failed to connect to bus: Connection refused
systemctl status postgresql
● postgresql.service - PostgreSQL RDBMS
Loaded: loaded (/lib/systemd/system/postgresql.service; enabled; vendor preset: enabled)
Active: active (exited) since Thu 2020-04-09 21:05:10 MSK; 17min ago
Process: 904 ExecStart=/bin/true (code=exited, status=0/SUCCESS)
Main PID: 904 (code=exited, status=0/SUCCESS)
Tasks: 0 (limit: 4915)
Memory: 0B
CPU: 0
CGroup: /system.slice/postgresql.service
systemctl --user status
Failed to connect to bus: No such file or directory
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systemctl --user status
Failed to connect to bus: Connection refused
systemctl status postgresql
● postgresql.service - PostgreSQL RDBMS
Loaded: loaded (/lib/systemd/system/postgresql.service; enabled; vendor preset: enabled)
Active: active (exited) since Thu 2020-04-09 21:05:10 MSK; 17min ago
Process: 904 ExecStart=/bin/true (code=exited, status=0/SUCCESS)
Main PID: 904 (code=exited, status=0/SUCCESS)
Tasks: 0 (limit: 4915)
Memory: 0B
CPU: 0
CGroup: /system.slice/postgresql.service
systemctl --user status
Failed to connect to bus: No such file or directory
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systemctl --user status
Failed to connect to bus: Connection refused
systemctl status postgresql
● postgresql.service - PostgreSQL RDBMS
Loaded: loaded (/lib/systemd/system/postgresql.service; enabled; vendor preset: enabled)
Active: active (exited) since Thu 2020-04-09 21:05:10 MSK; 17min ago
Process: 904 ExecStart=/bin/true (code=exited, status=0/SUCCESS)
Main PID: 904 (code=exited, status=0/SUCCESS)
Tasks: 0 (limit: 4915)
Memory: 0B
CPU: 0
CGroup: /system.slice/postgresql.service
systemctl --user status
Failed to connect to bus: No such file or directory
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# busctl --list
Failed to connect to bus: Connection refused
CentOS Linux release 8.1.1911 (Core)
systemd-libs-239-18.el8_1.4.x86_64
rpm-plugin-systemd-inhibit-4.14.2-25.el8.x86_64
systemd-pam-239-18.el8_1.4.x86_64
systemd-239-18.el8_1.4.x86_64
systemd-udev-239-18.el8_1.4.x86_64
connect(3, {sa_family=AF_UNIX, sun_path="/run/dbus/system_bus_socket"}, 29) = -1 ECONNREFUSED (Connection refused)
# lsof /run/dbus/system_bus_socket
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
systemd 1 root 74u unix 0x0000000020aff0ca 0t0 769 /run/dbus/system_bus_socket type=STREAM
dbus-daem 24356 dbus 3u unix 0x0000000020aff0ca 0t0 769 /run/dbus/system_bus_socket type=STREAM
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