разрешение
Установить systemd-sysv:
apt install systemd-sysv объяснение
Failed to get D-Bus connection: Unknown error -1 означает, что systemd не работает.
Вот моя установка LMDE 2, которая очень похожа на Debian 8:
lmde ~ # systemctl status ssh.service Failed to get D-Bus connection: Unknown error -1 В вашей системе, /sbin/initвероятно, не символическая ссылка, указывающая на /lib/systemd/systemd. Вот как это выглядит на LMDE 2:
lmde ~ # file /sbin/init /sbin/init: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=416c01d5df07b3a795694ff3360339b509daaf86, stripped Вот как это выглядит в Ubuntu 16.04 LTS, которая по умолчанию запускает systemd:
root@node51 [~]# file /sbin/init /sbin/init: symbolic link to /lib/systemd/systemd Чтобы решить эту проблему, замените пакет sysvinit-coreнаsystemd-sysv :
lmde ~ # apt install systemd-sysv Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: sysvinit-core The following NEW packages will be installed: systemd-sysv 0 upgraded, 1 newly installed, 1 to remove and 533 not upgraded. Need to get 32.7 kB of archives. After this operation, 177 kB disk space will be freed. Do you want to continue? [Y/n] Y Get:1 http://packages.linuxmint.com/ betsy/upstream systemd-sysv amd64 215+12+betsy [32.7 kB] Fetched 32.7 kB in 0s (81.1 kB/s) dpkg: sysvinit-core: dependency problems, but removing anyway as you requested: init depends on systemd-sysv | sysvinit-core | upstart; however: Package systemd-sysv is not installed. Package sysvinit-core is to be removed. Package upstart is not installed. (Reading database ... 159705 files and directories currently installed.) Removing sysvinit-core (2.88dsf-58) ... Processing triggers for man-db (2.7.0.2-5) ... Selecting previously unselected package systemd-sysv. (Reading database ... 159681 files and directories currently installed.) Preparing to unpack .../systemd-sysv_215+12+betsy_amd64.deb ... Unpacking systemd-sysv (215+12+betsy) ... Processing triggers for man-db (2.7.0.2-5) ... Setting up systemd-sysv (215+12+betsy) ... Теперь перезагрузите с reboot.
После перезагрузки системы вы запустите systemd вместо SysV:
lmde ~ # file /sbin/init /sbin/init: symbolic link to /lib/systemd/systemd lmde ~ # systemctl status ssh.service ● ssh.service - OpenBSD Secure Shell server Loaded: loaded (/lib/systemd/system/ssh.service; enabled) Active: active (running) since Wed 2017-02-08 06:58:27 CST; 1min 10s ago Main PID: 598 (sshd) CGroup: /system.slice/ssh.service └─598 /usr/sbin/sshd -D Feb 08 06:58:27 lmde sshd[598]: Server listening on 0.0.0.0 port 22. Feb 08 06:58:27 lmde sshd[598]: Server listening on :: port 22. Feb 08 06:58:29 lmde sshd[598]: Received SIGHUP; restarting. Feb 08 06:58:29 lmde sshd[598]: Server listening on 0.0.0.0 port 22. Feb 08 06:58:29 lmde sshd[598]: Server listening on :: port 22. Feb 08 06:58:44 lmde sshd[1614]: Accepted password for root from 10.0.0.2 port 59703 ssh2 Feb 08 06:58:44 lmde sshd[1614]: pam_unix(sshd:session): session opened for user root by (uid=0) Возможная причина?
Вы указали, что systemd в вашей установке Debian работал в прошлом. Возможно, что пакет или его зависимости потребовали SysVinit вместо systemd и стерли или отключили systemd.
Будьте в поисках сломанных зависимостей, если это так.
Дополнительные ресурсы
Документация
Описание sysvinit-core
lmde ~ # apt show sysvinit-core Package: sysvinit-core State: not installed Version: 2.88dsf-59 Priority: extra Section: admin Maintainer: Debian sysvinit maintainers <pkg-sysvinit-devel@lists.alioth.debian.org> Architecture: amd64 Uncompressed Size: 199 k Depends: initscripts (>= 2.88dsf-13.3), sysv-rc | file-rc, sysvinit-utils (>= 2.86.ds1-66), libc6 (>= 2.15), libselinux1 (>= 1.32), libsepol1 (>= 1.14), debconf (>= 0.5) | debconf-2.0, debianutils (>= 4) Conflicts: systemd-sysv, systemd-sysv, upstart, upstart, sysvinit-core Replaces: systemd-sysv, systemd-sysv, sysvinit (< 2.88dsf-44~), sysvinit (< 2.88dsf-44~), upstart, upstart Description: System-V-like init utilities This package contains programs required for booting a Debian system and doing basic process management. The most important program in the package is /sbin/init. It is the first process started on boot and continues to run as process number 1 until the system halts. All other processes are descended from it. Homepage: http://savannah.nongnu.org/projects/sysvinit Описание systemd-sysv
lmde ~ # apt show systemd-sysv Package: systemd-sysv State: installed Automatically installed: no Version: 215+12+betsy Priority: extra Section: admin Maintainer: Debian systemd Maintainers <pkg-systemd-maintainers@lists.alioth.debian.org> Architecture: amd64 Uncompressed Size: 77.8 k Depends: systemd (= 215+12+betsy) PreDepends: systemd Conflicts: sysvinit-core, sysvinit-core, upstart, upstart, systemd-sysv Replaces: sysvinit (< 2.88dsf-44~), sysvinit (< 2.88dsf-44~), sysvinit-core, sysvinit-core, upstart, upstart Description: system and service manager - SysV links systemd is a replacement for sysvinit. It is dependency-based and able to read the LSB init script headers in addition to parsing rcN.d links as hints. It also provides process supervision using cgroups and the ability to not only depend on other init script being started, but also availability of a given mount point or dbus service. This package provides the manual pages and links needed for systemd to replace sysvinit. Installing systemd-sysv will overwrite /sbin/init with a link to systemd. Homepage: http://www.freedesktop.org/wiki/Software/systemd