後で始まるnetwork-online.target

後で始まるnetwork-online.target

私はアーチLinuxを使用しています。再起動後、ネットワークがまだ機能していないため、sshd.serviceを起動できません。手動で実行する必要があります。

sudo systemctl restart sshd

これを行うと、sshdサービスはエラーなしで開始され、正常に実行されました。 systemd sshd.serviceが自動的に起動するようにこの問題を解決するにはどうすればよいですか?

ログは次のとおりです。

May 06 15:47:23 server2 nm-dispatcher[471]: req:3 'connectivity-change': completed: no scripts
May 06 15:47:23 server2 nm-dispatcher[471]: req:3 'connectivity-change': new request (0 scripts)
May 06 15:47:23 server2 NetworkManager[440]: <info>  [1525636043.9284] manager: NetworkManager state is now CONNECTED_GLOBAL

May 06 15:47:22 server2 nm-dispatcher[471]: req:2 'up' [eth0]: completed: no scripts
May 06 15:47:22 server2 nm-dispatcher[471]: req:2 'up' [eth0]: new request (0 scripts)
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6632] manager: startup complete
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6626] device (eth0): Activation: successful, device activated.
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6566] policy: set 'Wired connection 1' (eth0) as default for IPv4 routing and DNS
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6565] manager: NetworkManager state is now CONNECTED_SITE
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6558] manager: NetworkManager state is now CONNECTED_LOCAL
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6557] device (eth0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'manag>
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6555] device (eth0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'manage>
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6549] device (eth0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6541] dhcp4 (eth0): state changed unknown -> bound
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6536] dhcp4 (eth0):   gateway 10.10.0.1
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6536] dhcp4 (eth0):   hostname 'server2'
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6536] dhcp4 (eth0):   domain name 'oaks'
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6536] dhcp4 (eth0):   nameserver '10.10.0.1'
May 06 15:47:22 server2 dbus-daemon[439]: [system] Activation via systemd failed for unit 'dbus-org.freedesktop.Avahi.service': Unit dbus-org.freedesktop.Avahi.serv>
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6535] dhcp4 (eth0):   expires in 648000 seconds
May 06 15:47:22 server2 dbus-daemon[439]: [system] Activating via systemd: service name='org.freedesktop.Avahi' unit='dbus-org.freedesktop.Avahi.service' requested >
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6535] dhcp4 (eth0):   plen 24
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6535] dhcp4 (eth0):   address 10.10.1.12
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6293] dhcp4 (eth0): activation: beginning transaction (timeout in 45 seconds)
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6284] device (eth0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6275] device (eth0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6262] manager: NetworkManager state is now CONNECTING
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6258] device (eth0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'manage>
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6251] device (eth0): Activation: starting connection 'Wired connection 1' (5b9f0bf9-ed10-31e5-bcad->
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6224] policy: auto-activating connection 'Wired connection 1'
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6206] device (eth0): state change: unavailable -> disconnected (reason 'carrier-changed', sys-iface>
May 06 15:47:22 server2 NetworkManager[440]: <info>  [1525636042.6196] device (eth0): carrier: link connected
May 06 15:47:22 server2 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
May 06 15:47:22 server2 kernel: e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
May 06 15:47:22 server2 udisksd[598]: udisks daemon version 2.7.6 starting
May 06 15:47:22 server2 systemd[1]: Starting Disk Manager...

May 06 15:47:20 server2 systemd[1]: sshd.service: Failed with result 'exit-code'.
May 06 15:47:20 server2 systemd[1]: sshd.service: Main process exited, code=exited, status=255/n/a
May 06 15:47:20 server2 sshd[564]: fatal: Cannot bind any address.
May 06 15:47:20 server2 sshd[564]: error: Bind to port 22 on 10.10.1.12 failed: Cannot assign requested address.
May 06 15:47:20 server2 systemd[1]: Started OpenSSH Daemon.
May 06 15:47:20 server2 systemd[1]: Stopped OpenSSH Daemon.
May 06 15:47:20 server2 systemd[1]: sshd.service: Scheduled restart job, restart counter is at 3.
May 06 15:47:20 server2 systemd[1]: sshd.service: Service hold-off time over, scheduling restart.
May 06 15:47:19 server2 systemd[1]: Startup finished in 12.430s (firmware) + 6.006s (loader) + 8.847s (kernel) + 2.106s (userspace) = 29.391s.
May 06 15:47:19 server2 polkitd[543]: Acquired the name org.freedesktop.PolicyKit1 on the system bus
May 06 15:47:19 server2 systemd[1]: Started Authorization Manager.
May 06 15:47:19 server2 dbus-daemon[439]: [system] Successfully activated service 'org.freedesktop.PolicyKit1'
May 06 15:47:19 server2 polkitd[543]: Finished loading, compiling and executing 2 rules
May 06 15:47:19 server2 polkitd[543]: Error compiling script /etc/polkit-1/rules.d/40-allow-passwordless-printer-admin.rules
May 06 15:47:19 server2 polkitd[543]: Loading rules from directory /usr/share/polkit-1/rules.d
May 06 15:47:19 server2 polkitd[543]: Loading rules from directory /etc/polkit-1/rules.d
May 06 15:47:19 server2 polkitd[543]: Started polkitd version 0.114
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.9110] supplicant: wpa_supplicant running
May 06 15:47:19 server2 wpa_supplicant[546]: Successfully initialized wpa_supplicant
May 06 15:47:19 server2 systemd[1]: Started WPA supplicant.
May 06 15:47:19 server2 dbus-daemon[439]: [system] Successfully activated service 'fi.w1.wpa_supplicant1'
May 06 15:47:19 server2 systemd[1]: Started CUPS Scheduler.
May 06 15:47:19 server2 colord[526]: failed to get session [pid 465]: No data available
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.8565] device (wlan0): set-hw-addr: set MAC address to 02:6B:94:A4:D1:08 (scanning)
May 06 15:47:19 server2 kernel: IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.8563] device (wlan0): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'e>
May 06 15:47:19 server2 systemd[1]: sshd.service: Failed with result 'exit-code'.
May 06 15:47:19 server2 sshd[540]: fatal: Cannot bind any address.
May 06 15:47:19 server2 systemd[1]: sshd.service: Main process exited, code=exited, status=255/n/a
May 06 15:47:19 server2 sshd[540]: error: Bind to port 22 on 10.10.1.12 failed: Cannot assign requested address.
May 06 15:47:19 server2 systemd[1]: Starting WPA supplicant...
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.8527] manager: (wlan0): new 802.11 WiFi device (/org/freedesktop/NetworkManager/Devices/3)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.8521] device (wlan0): driver supports Access Point (AP) mode
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.8519] wifi-nl80211: (wlan0): using nl80211 for WiFi device control
May 06 15:47:19 server2 dbus-daemon[439]: [system] Activating via systemd: service name='fi.w1.wpa_supplicant1' unit='wpa_supplicant.service' requested by ':1.1' (u>
May 06 15:47:19 server2 systemd[1]: Starting Authorization Manager...
May 06 15:47:19 server2 systemd[1]: Started OpenSSH Daemon.
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.8493] manager: rfkill: WiFi now disabled by radio killswitch
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.8492] rfkill1: found WiFi radio killswitch (at /sys/devices/pci0000:00/0000:00:1d.1/0000:05:00.0/ie>
May 06 15:47:19 server2 systemd[1]: Stopped OpenSSH Daemon.
May 06 15:47:19 server2 systemd[1]: sshd.service: Scheduled restart job, restart counter is at 2.
May 06 15:47:19 server2 systemd[1]: sshd.service: Service hold-off time over, scheduling restart.
May 06 15:47:19 server2 dbus-daemon[439]: [system] Activating via systemd: service name='org.freedesktop.PolicyKit1' unit='polkit.service' requested by ':1.1' (uid=>
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.8479] ovsdb: Could not connect: No such file or directory
May 06 15:47:19 server2 kernel: IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

May 06 15:47:19 server2 systemd[1]: sshd.service: Failed with result 'exit-code'.
May 06 15:47:19 server2 systemd[1]: sshd.service: Main process exited, code=exited, status=255/n/a
May 06 15:47:19 server2 sshd[525]: fatal: Cannot bind any address.
May 06 15:47:19 server2 sshd[525]: error: Bind to port 22 on 10.10.1.12 failed: Cannot assign requested address.
May 06 15:47:19 server2 systemd[1]: Starting Manage, Install and Generate Color Profiles...
May 06 15:47:19 server2 systemd[1]: Started OpenSSH Daemon.
May 06 15:47:19 server2 systemd[1]: Stopped OpenSSH Daemon.
May 06 15:47:19 server2 systemd[1]: sshd.service: Scheduled restart job, restart counter is at 1.
May 06 15:47:19 server2 systemd[1]: sshd.service: Service hold-off time over, scheduling restart.
May 06 15:47:19 server2 dbus-daemon[439]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.9' (ui>
May 06 15:47:19 server2 kernel: ath: Regpair used: 0x69
May 06 15:47:19 server2 kernel: ath: Country alpha2 being used: 00
May 06 15:47:19 server2 kernel: ath: EEPROM indicates we should expect a direct regpair map
May 06 15:47:19 server2 kernel: ath: EEPROM regdomain: 0x69
May 06 15:47:19 server2 kernel: IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.6322] device (eth0): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'ex>
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.6298] settings: (eth0): created default wired connection 'Wired connection 1'
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.6283] keyfile: add connection in-memory (5b9f0bf9-ed10-31e5-bcad-42dadabdcdad,"Wired connection 1")
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.6253] manager: (eth0): new Ethernet device (/org/freedesktop/NetworkManager/Devices/2)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.6223] manager: (lo): new Generic device (/org/freedesktop/NetworkManager/Devices/1)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.6207] device (lo): carrier: link connected
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.6185] Loaded device plugin: NMOvsFactory (/usr/lib/NetworkManager/libnm-device-plugin-ovs.so)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.6170] Loaded device plugin: NMTeamFactory (/usr/lib/NetworkManager/libnm-device-plugin-team.so)
May 06 15:47:19 server2 kernel: ath10k_pci 0000:05:00.0: htt-ver 3.47 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1
May 06 15:47:19 server2 kernel: ath10k_pci 0000:05:00.0: Unknown eventid: 90118
May 06 15:47:19 server2 kernel: ath10k_pci 0000:05:00.0: Unknown eventid: 118809
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5679] Loaded device plugin: NMWifiFactory (/usr/lib/NetworkManager/libnm-device-plugin-wifi.so)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5647] Loaded device plugin: NMBluezManager (/usr/lib/NetworkManager/libnm-device-plugin-bluetooth.s>
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5550] Loaded device plugin: NMWwanFactory (/usr/lib/NetworkManager/libnm-device-plugin-wwan.so)

May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5299] Loaded device plugin: NMAtmManager (/usr/lib/NetworkManager/libnm-device-plugin-adsl.so)

May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5276] Loaded device plugin: NMVxlanDeviceFactory (internal)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5276] Loaded device plugin: NMVlanDeviceFactory (internal)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5276] Loaded device plugin: NMVethDeviceFactory (internal)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5276] Loaded device plugin: NMTunDeviceFactory (internal)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5276] Loaded device plugin: NMPppDeviceFactory (internal)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5276] Loaded device plugin: NMMacvlanDeviceFactory (internal)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5275] Loaded device plugin: NMMacsecDeviceFactory (internal)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5275] Loaded device plugin: NMIPTunnelDeviceFactory (internal)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5275] Loaded device plugin: NMInfinibandDeviceFactory (internal)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5275] Loaded device plugin: NMEthernetDeviceFactory (internal)
May 06 15:47:19 server2 nm-dispatcher[471]: req:1 'hostname': completed: no scripts
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5275] Loaded device plugin: NMDummyDeviceFactory (internal)
May 06 15:47:19 server2 nm-dispatcher[471]: req:1 'hostname': new request (0 scripts)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5275] Loaded device plugin: NMBridgeDeviceFactory (internal)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5275] Loaded device plugin: NMBondDeviceFactory (internal)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5275] dhcp-init: Using DHCP client 'internal'
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5274] manager: Networking is enabled by state file
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5274] manager: rfkill: WWAN enabled by radio killswitch; enabled by state file
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5273] manager: rfkill: WiFi enabled by radio killswitch; disabled by state file

May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.5267] settings: loaded plugin iBFT: (c) 2014 Red Hat, Inc.  To report bugs please use the NetworkMa>

May 06 15:47:19 server2 ntpd[458]: Command line: /usr/bin/ntpd -g -u ntp:ntp
May 06 15:47:19 server2 ntpd[458]: ntpd [email protected] Wed Mar  7 18:48:03 UTC 2018 (1): Starting


May 06 15:47:19 server2 systemd[1]: Started Network Manager Script Dispatcher Service.
May 06 15:47:19 server2 dbus-daemon[439]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'

May 06 15:47:19 server2 systemd[1]: sshd.service: Failed with result 'exit-code'.
May 06 15:47:19 server2 systemd[1]: sshd.service: Main process exited, code=exited, status=255/n/a
May 06 15:47:19 server2 sshd[463]: fatal: Cannot bind any address.
May 06 15:47:19 server2 sshd[463]: error: Bind to port 22 on 10.10.1.12 failed: Cannot assign requested address.
May 06 15:47:19 server2 systemd[1]: Started Simple Desktop Display Manager.
May 06 15:47:19 server2 autossh[462]: ssh child pid is 476
May 06 15:47:19 server2 systemd[1]: Started Permit User Sessions.
May 06 15:47:19 server2 autossh[462]: starting ssh (count 1)
May 06 15:47:19 server2 autossh[462]: port set to 0, monitoring disabled
May 06 15:47:19 server2 autossh[468]: ssh child pid is 475
May 06 15:47:19 server2 autossh[468]: starting ssh (count 1)
May 06 15:47:19 server2 autossh[461]: ssh child pid is 474
May 06 15:47:19 server2 autossh[459]: ssh child pid is 473
May 06 15:47:19 server2 autossh[461]: starting ssh (count 1)
May 06 15:47:19 server2 autossh[460]: ssh child pid is 472
May 06 15:47:19 server2 autossh[459]: starting ssh (count 1)
May 06 15:47:19 server2 autossh[460]: starting ssh (count 1)
May 06 15:47:19 server2 systemd[1]: Starting Network Manager Script Dispatcher Service...
May 06 15:47:19 server2 autossh[466]: ssh child pid is 470
May 06 15:47:19 server2 autossh[466]: starting ssh (count 1)
May 06 15:47:19 server2 autossh[468]: port set to 0, monitoring disabled
May 06 15:47:19 server2 autossh[461]: port set to 0, monitoring disabled
May 06 15:47:19 server2 autossh[459]: port set to 0, monitoring disabled
May 06 15:47:19 server2 autossh[460]: port set to 0, monitoring disabled
May 06 15:47:19 server2 autossh[466]: port set to 0, monitoring disabled
May 06 15:47:19 server2 systemd[1]: Starting Permit User Sessions...
May 06 15:47:19 server2 systemd[1]: Starting CUPS Scheduler...
May 06 15:47:19 server2 systemd[1]: Started OpenSSH Daemon.
May 06 15:47:19 server2 dbus-daemon[439]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.ser>
May 06 15:47:19 server2 systemd[1]: Starting Network Time Service...
May 06 15:47:19 server2 systemd[1]: Reached target Network.
May 06 15:47:19 server2 systemd[1]: Started Network Manager.
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.4679] manager[0x5631afba8080]: rfkill: WWAN hardware radio set enabled
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.4678] manager[0x5631afba8080]: rfkill: WiFi hardware radio set disabled
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.4674] dns-mgr[0x5631afbc3130]: init: dns=default, rc-manager=symlink
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.4672] hostname: hostname changed from (none) to "server2"
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.4672] hostname: hostname: using hostnamed
May 06 15:47:19 server2 systemd[1]: Started Hostname Service.
May 06 15:47:19 server2 dbus-daemon[439]: [system] Successfully activated service 'org.freedesktop.hostname1'
May 06 15:47:19 server2 kernel: input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input19
May 06 15:47:19 server2 kernel: input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input18
May 06 15:47:19 server2 kernel: input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input17
May 06 15:47:19 server2 kernel: input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input16
May 06 15:47:19 server2 systemd[1]: Starting Hostname Service...
May 06 15:47:19 server2 dbus-daemon[439]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' re>
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.1725] manager[0x5631afba8080]: monitoring kernel firmware directory '/usr/lib/firmware'.
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.1684] Read config: /etc/NetworkManager/NetworkManager.conf (lib: 20-connectivity.conf)
May 06 15:47:19 server2 NetworkManager[440]: <info>  [1525636039.1683] NetworkManager (version 1.10.6-3, Arch Linux) is starting... (for the first time)
May 06 15:47:19 server2 systemd-logind[441]: Watching system buttons on /dev/input/event4 (  USB Keyboard)
May 06 15:47:19 server2 systemd-logind[441]: Watching system buttons on /dev/input/event3 (  USB Keyboard)
May 06 15:47:19 server2 systemd-logind[441]: Watching system buttons on /dev/input/event0 (Sleep Button)
May 06 15:47:19 server2 systemd-logind[441]: Watching system buttons on /dev/input/event1 (Power Button)
May 06 15:47:19 server2 systemd-logind[441]: Watching system buttons on /dev/input/event2 (Power Button)
May 06 15:47:19 server2 systemd-logind[441]: New seat seat0.
May 06 15:47:19 server2 systemd[1]: Reached target Timers.
May 06 15:47:19 server2 systemd[1]: Started Daily man-db cache update.
May 06 15:47:19 server2 systemd[1]: Started Daily verification of password and group files.
May 06 15:47:19 server2 systemd[1]: Started Daily Cleanup of Snapper Snapshots.
May 06 15:47:19 server2 systemd[1]: Started Daily autocommit of changes in /etc directory.
May 06 15:47:19 server2 systemd[1]: Starting Login Service...
May 06 15:47:19 server2 systemd[1]: Starting Network Manager...
May 06 15:47:19 server2 systemd[1]: Started D-Bus System Message Bus.
May 06 15:47:19 server2 systemd[1]: Reached target Basic System.
May 06 15:47:19 server2 systemd[1]: Reached target Sockets.
May 06 15:47:19 server2 systemd[1]: Listening on CUPS Scheduler.
May 06 15:47:19 server2 systemd[1]: Listening on D-Bus System Message Bus Socket.
May 06 15:47:19 server2 systemd[1]: Started Daily Cleanup of Temporary Directories.
May 06 15:47:19 server2 systemd[1]: Started Timeline of Snapper Snapshots.
May 06 15:47:19 server2 systemd[1]: Reached target Paths.
May 06 15:47:19 server2 systemd[1]: Started CUPS Scheduler.
May 06 15:47:19 server2 systemd[1]: Started Daily rotation of log files.
May 06 15:47:19 server2 systemd[1]: Reached target System Initialization.
May 06 15:47:19 server2 systemd[1]: Started Update UTMP about System Boot/Shutdown.
May 06 15:47:19 server2 systemd[1]: Starting Update UTMP about System Boot/Shutdown...
May 06 15:47:19 server2 systemd[1]: Started Create Volatile Files and Directories.
May 06 15:47:19 server2 systemd[1]: Starting Create Volatile Files and Directories...
May 06 15:47:19 server2 systemd[1]: Started Flush Journal to Persistent Storage.
May 06 15:47:18 server2 systemd[1]: Reached target Sound Card.

/usr/lib/systemd/system/sshd.service:

[Unit]
Description=OpenSSH Daemon
Wants=sshdgenkeys.service
After=sshdgenkeys.service
After=network.target

[Service]
ExecStart=/usr/bin/sshd -D
ExecReload=/bin/kill -HUP $MAINPID
KillMode=process
Restart=always

[Install]
WantedBy=multi-user.target

# This service file runs an SSH daemon that forks for each incoming connection.
# If you prefer to spawn on-demand daemons, use sshd.socket and [email protected].

/etc/NetworkManager/NetworkManager.conf は空で、/etc/NetworkManager/conf.d/ は空です。

注目すべきログエントリ:

  • 5月6日 15:47:22 server2 カーネル: e1000e: eth0 NIC リンクが開始される 1000Mbps 全二重、フロー制御: Rx/Tx
  • 5月6日 15:47:19 server2 systemd[1]: sshd.service: '終了コード'のため失敗しました。
  • 5月6日 15:47:19 server2 systemd[1]: ターゲットネットワークに到達しました。

実際のインターフェイスが表示される前に、システムがターゲットネットワークに到達したようです。この問題はどのように解決されますか?

ベストアンサー1

AB に示すように、特定の IP アドレスを受信するように SSH 設定を調整できます。 sshd の起動時に IP アドレスが使用できない場合、サービスは失敗します。
デフォルトでは、sshdはすべてのアドレスを意味するlist onで構成されているため、0.0.0.0使用可能な特定のIPに依存しません。

この問題を解決する方法は2つあります。

後で始まるnetwork-online.target

systemdは、network-online.targetネットワークが完全に起動する必要がある(すべてのインターフェイスが設定されている)サービスのためのユニットを提供します。このようにインターフェイスを設定した後、ローカルシステムの起動後にsshdを起動することができます。

mkdir /etc/systemd/system/sshd.service.d

cat > /etc/systemd/system/sshd.service.d/network-online.conf <<EOF
[Unit]
After=network-online.target
EOF

systemctl daemon-reload

ローカル以外のアドレスへのバインディングを許可する

別のオプションは、ホストに存在しないアドレスを受信できるようにすることです。
ソリューションはシステム全体に適用されるため、SSHDだけでなくすべてのサービスで動作します。

echo 'net.ipv4.ip_nonlocal_bind = 1' > /etc/sysctl.d/99-nonlocal_bind.conf

systemctl restart systemd-sysctl.service

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