systemd-resolved crashing with “Failed to set up mount namespacing: Invalid argument” &...





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Problem



I'm trying to investigate this weird error where systemd-resolved is constantly crashing on 2 out of 4 machines. The one thing different with these two problematic machines (that I can think of), is that they are mounting a samba/cifs filesystem exported from machine #3 (on which systemd-resolved is running fine).



How do I get to the bottom of this?



OS



# cat /etc/lsb-release 

DISTRIB_ID=Ubuntu

DISTRIB_RELEASE=18.04

DISTRIB_CODENAME=bionic

DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"



# uname -a

Linux prod-delayed-jobs 4.15.0-42-generic #45-Ubuntu SMP Thu Nov 15 19:32:57 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux



# systemd --version

systemd 237

+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybrid


Relevant journalctl output



Notice the /dev/null is not a device. line in the logs. This is occurring multiple times - during, before, and after systemd-resolved crashes.



Feb 12 14:23:21 prod-delayed-jobs dhclient[794]: DHCPREQUEST of [REDACTED-IP-ADDRESS] on eth0 to 172.31.1.1 port 67 (xid=0x730cc4e4)

Feb 12 14:23:21 prod-delayed-jobs dhclient[794]: DHCPACK of [REDACTED-IP-ADDRESS] from 172.31.1.1

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopping Network Name Resolution...

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopped Network Name Resolution.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: /dev/null is not a device.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Starting Network Name Resolution...

Feb 12 14:23:21 prod-delayed-jobs systemd[11796]: systemd-resolved.service: Failed to set up mount namespacing: Invalid argument

Feb 12 14:23:21 prod-delayed-jobs systemd[11796]: systemd-resolved.service: Failed at step NAMESPACE spawning /lib/systemd/systemd-resolved

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=226/NAMESPACE

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Failed to start Network Name Resolution.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Service has no hold-off time, scheduling restart.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 1.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopped Network Name Resolution.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: /dev/null is not a device.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Starting Network Name Resolution...

Feb 12 14:23:21 prod-delayed-jobs dhclient[794]: bound to [REDACTED-IP-ADDRESS] -- renewal in 32497 seconds.

Feb 12 14:23:21 prod-delayed-jobs systemd[11813]: systemd-resolved.service: Failed to set up mount namespacing: Invalid argument

Feb 12 14:23:21 prod-delayed-jobs systemd[11813]: systemd-resolved.service: Failed at step NAMESPACE spawning /lib/systemd/systemd-resolved

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=226/NAMESPACE

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Failed to start Network Name Resolution.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Service has no hold-off time, scheduling restart.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 2.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopped Network Name Resolution.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: /dev/null is not a device.

Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Starting Network Name Resolution...

Feb 12 14:23:22 prod-delayed-jobs systemd[11831]: systemd-resolved.service: Failed to set up mount namespacing: Invalid argument

Feb 12 14:23:22 prod-delayed-jobs systemd[11831]: systemd-resolved.service: Failed at step NAMESPACE spawning /lib/systemd/systemd-resolved

Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=226/NAMESPACE

Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.

Feb 12 14:23:22 prod-delayed-jobs systemd[1]: Failed to start Network Name Resolution.

Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Service has no hold-off time, scheduling restart.

Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 3.



/etc/fstab contents - in case this is relevant



UUID=2f54e8e6-ff9c-497a-88ea-ce159f6cd283 /               ext4    discard,errors=remount-ro 0       1

/dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0

//[REDACTED]/uploaded_files /home/myuser/shared cifs rw,username=myuser,password=[REDACTED],uid=myuser,gid=myuser 0 0


Few systemd configuration files are pointing to /dev/null



This is the case on all the 4 machines, however only 2 out of these 4 are having trouble with systemd-resolved. Strangely, hostname.service is pointing to /dev/null - wonder why?



lrwxrwxrwx 1 root root    9 Nov 15 21:45 bootlogd.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 bootlogs.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 bootmisc.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 checkfs.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 checkroot-bootclean.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 checkroot.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 cryptdisks-early.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 cryptdisks.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 fuse.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 halt.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 hostname.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 hwclock.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 killprocs.service -> /dev/null

lrwxrwxrwx 1 root root    9 Apr 12  2018 lvm2.service -> /dev/null

lrwxrwxrwx 1 root root    9 Jul  2  2018 mdadm.service -> /dev/null

lrwxrwxrwx 1 root root    9 Jul  2  2018 mdadm-waitidle.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 motd.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountall-bootclean.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountall.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountdevsubfs.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountkernfs.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountnfs-bootclean.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountnfs.service -> /dev/null

lrwxrwxrwx 1 root root    9 Jan 16  2018 nfs-common.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 rc.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 rcS.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 reboot.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 rmnologin.service -> /dev/null

lrwxrwxrwx 1 root root    9 Dec  6 11:10 screen-cleanup.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 sendsigs.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 single.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 stop-bootlogd.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 stop-bootlogd-single.service -> /dev/null

lrwxrwxrwx 1 root root    9 Dec  6 11:07 sudo.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 umountfs.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 umountnfs.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 umountroot.service -> /dev/null

lrwxrwxrwx 1 root root    9 Nov 15 21:45 x11-common.service -> /dev/null


/lib/systemd/system



[Unit]

Description=Network Name Resolution

Documentation=man:systemd-resolved.service(8)

Documentation=https://www.freedesktop.org/wiki/Software/systemd/resolved

Documentation=https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers

Documentation=https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients

DefaultDependencies=no

After=systemd-sysusers.service systemd-networkd.service

Before=network.target nss-lookup.target shutdown.target

Conflicts=shutdown.target

Wants=nss-lookup.target



[Service]

Type=notify

Restart=always

RestartSec=0

ExecStart=!!/lib/systemd/systemd-resolved

WatchdogSec=3min

User=systemd-resolve

CapabilityBoundingSet=CAP_SETPCAP CAP_NET_RAW CAP_NET_BIND_SERVICE

AmbientCapabilities=CAP_SETPCAP CAP_NET_RAW CAP_NET_BIND_SERVICE

PrivateTmp=yes

PrivateDevices=yes

ProtectSystem=strict

ProtectHome=yes

ProtectControlGroups=yes

ProtectKernelTunables=yes

ProtectKernelModules=yes

MemoryDenyWriteExecute=yes

RestrictRealtime=yes

RestrictAddressFamilies=AF_UNIX AF_NETLINK AF_INET AF_INET6

SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @mount @obsolete @raw-io @reboot @swap





18.04 samba systemd systemd-resolved







share|improve this question





























    0















    Problem



    I'm trying to investigate this weird error where systemd-resolved is constantly crashing on 2 out of 4 machines. The one thing different with these two problematic machines (that I can think of), is that they are mounting a samba/cifs filesystem exported from machine #3 (on which systemd-resolved is running fine).



    How do I get to the bottom of this?



    OS



    # cat /etc/lsb-release 
    
DISTRIB_ID=Ubuntu
    
DISTRIB_RELEASE=18.04
    
DISTRIB_CODENAME=bionic
    
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
    

    
# uname -a
    
Linux prod-delayed-jobs 4.15.0-42-generic #45-Ubuntu SMP Thu Nov 15 19:32:57 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
    

    
# systemd --version
    
systemd 237
    
+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybrid


    Relevant journalctl output



    Notice the /dev/null is not a device. line in the logs. This is occurring multiple times - during, before, and after systemd-resolved crashes.



    Feb 12 14:23:21 prod-delayed-jobs dhclient[794]: DHCPREQUEST of [REDACTED-IP-ADDRESS] on eth0 to 172.31.1.1 port 67 (xid=0x730cc4e4)
    
Feb 12 14:23:21 prod-delayed-jobs dhclient[794]: DHCPACK of [REDACTED-IP-ADDRESS] from 172.31.1.1
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopping Network Name Resolution...
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopped Network Name Resolution.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: /dev/null is not a device.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Starting Network Name Resolution...
    
Feb 12 14:23:21 prod-delayed-jobs systemd[11796]: systemd-resolved.service: Failed to set up mount namespacing: Invalid argument
    
Feb 12 14:23:21 prod-delayed-jobs systemd[11796]: systemd-resolved.service: Failed at step NAMESPACE spawning /lib/systemd/systemd-resolved
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=226/NAMESPACE
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Failed to start Network Name Resolution.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Service has no hold-off time, scheduling restart.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 1.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopped Network Name Resolution.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: /dev/null is not a device.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Starting Network Name Resolution...
    
Feb 12 14:23:21 prod-delayed-jobs dhclient[794]: bound to [REDACTED-IP-ADDRESS] -- renewal in 32497 seconds.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[11813]: systemd-resolved.service: Failed to set up mount namespacing: Invalid argument
    
Feb 12 14:23:21 prod-delayed-jobs systemd[11813]: systemd-resolved.service: Failed at step NAMESPACE spawning /lib/systemd/systemd-resolved
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=226/NAMESPACE
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Failed to start Network Name Resolution.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Service has no hold-off time, scheduling restart.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 2.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopped Network Name Resolution.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: /dev/null is not a device.
    
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Starting Network Name Resolution...
    
Feb 12 14:23:22 prod-delayed-jobs systemd[11831]: systemd-resolved.service: Failed to set up mount namespacing: Invalid argument
    
Feb 12 14:23:22 prod-delayed-jobs systemd[11831]: systemd-resolved.service: Failed at step NAMESPACE spawning /lib/systemd/systemd-resolved
    
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=226/NAMESPACE
    
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.
    
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: Failed to start Network Name Resolution.
    
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Service has no hold-off time, scheduling restart.
    
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 3.



    /etc/fstab contents - in case this is relevant



    UUID=2f54e8e6-ff9c-497a-88ea-ce159f6cd283 /               ext4    discard,errors=remount-ro 0       1
    
/dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0
    
//[REDACTED]/uploaded_files /home/myuser/shared cifs rw,username=myuser,password=[REDACTED],uid=myuser,gid=myuser 0 0


    Few systemd configuration files are pointing to /dev/null



    This is the case on all the 4 machines, however only 2 out of these 4 are having trouble with systemd-resolved. Strangely, hostname.service is pointing to /dev/null - wonder why?



    lrwxrwxrwx 1 root root    9 Nov 15 21:45 bootlogd.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 bootlogs.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 bootmisc.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 checkfs.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 checkroot-bootclean.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 checkroot.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 cryptdisks-early.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 cryptdisks.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 fuse.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 halt.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 hostname.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 hwclock.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 killprocs.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Apr 12  2018 lvm2.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Jul  2  2018 mdadm.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Jul  2  2018 mdadm-waitidle.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 motd.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountall-bootclean.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountall.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountdevsubfs.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountkernfs.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountnfs-bootclean.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountnfs.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Jan 16  2018 nfs-common.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 rc.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 rcS.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 reboot.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 rmnologin.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Dec  6 11:10 screen-cleanup.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 sendsigs.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 single.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 stop-bootlogd.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 stop-bootlogd-single.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Dec  6 11:07 sudo.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 umountfs.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 umountnfs.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 umountroot.service -> /dev/null
    
lrwxrwxrwx 1 root root    9 Nov 15 21:45 x11-common.service -> /dev/null


    /lib/systemd/system



    [Unit]
    
Description=Network Name Resolution
    
Documentation=man:systemd-resolved.service(8)
    
Documentation=https://www.freedesktop.org/wiki/Software/systemd/resolved
    
Documentation=https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers
    
Documentation=https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients
    
DefaultDependencies=no
    
After=systemd-sysusers.service systemd-networkd.service
    
Before=network.target nss-lookup.target shutdown.target
    
Conflicts=shutdown.target
    
Wants=nss-lookup.target
    

    
[Service]
    
Type=notify
    
Restart=always
    
RestartSec=0
    
ExecStart=!!/lib/systemd/systemd-resolved
    
WatchdogSec=3min
    
User=systemd-resolve
    
CapabilityBoundingSet=CAP_SETPCAP CAP_NET_RAW CAP_NET_BIND_SERVICE
    
AmbientCapabilities=CAP_SETPCAP CAP_NET_RAW CAP_NET_BIND_SERVICE
    
PrivateTmp=yes
    
PrivateDevices=yes
    
ProtectSystem=strict
    
ProtectHome=yes
    
ProtectControlGroups=yes
    
ProtectKernelTunables=yes
    
ProtectKernelModules=yes
    
MemoryDenyWriteExecute=yes
    
RestrictRealtime=yes
    
RestrictAddressFamilies=AF_UNIX AF_NETLINK AF_INET AF_INET6
    
SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @mount @obsolete @raw-io @reboot @swap





    18.04 samba systemd systemd-resolved







    share|improve this question

























      0












      0








      0








      Problem



      I'm trying to investigate this weird error where systemd-resolved is constantly crashing on 2 out of 4 machines. The one thing different with these two problematic machines (that I can think of), is that they are mounting a samba/cifs filesystem exported from machine #3 (on which systemd-resolved is running fine).



      How do I get to the bottom of this?



      OS



      # cat /etc/lsb-release 
      
DISTRIB_ID=Ubuntu
      
DISTRIB_RELEASE=18.04
      
DISTRIB_CODENAME=bionic
      
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
      

      
# uname -a
      
Linux prod-delayed-jobs 4.15.0-42-generic #45-Ubuntu SMP Thu Nov 15 19:32:57 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
      

      
# systemd --version
      
systemd 237
      
+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybrid


      Relevant journalctl output



      Notice the /dev/null is not a device. line in the logs. This is occurring multiple times - during, before, and after systemd-resolved crashes.



      Feb 12 14:23:21 prod-delayed-jobs dhclient[794]: DHCPREQUEST of [REDACTED-IP-ADDRESS] on eth0 to 172.31.1.1 port 67 (xid=0x730cc4e4)
      
Feb 12 14:23:21 prod-delayed-jobs dhclient[794]: DHCPACK of [REDACTED-IP-ADDRESS] from 172.31.1.1
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopping Network Name Resolution...
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopped Network Name Resolution.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: /dev/null is not a device.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Starting Network Name Resolution...
      
Feb 12 14:23:21 prod-delayed-jobs systemd[11796]: systemd-resolved.service: Failed to set up mount namespacing: Invalid argument
      
Feb 12 14:23:21 prod-delayed-jobs systemd[11796]: systemd-resolved.service: Failed at step NAMESPACE spawning /lib/systemd/systemd-resolved
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=226/NAMESPACE
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Failed to start Network Name Resolution.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Service has no hold-off time, scheduling restart.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 1.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopped Network Name Resolution.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: /dev/null is not a device.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Starting Network Name Resolution...
      
Feb 12 14:23:21 prod-delayed-jobs dhclient[794]: bound to [REDACTED-IP-ADDRESS] -- renewal in 32497 seconds.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[11813]: systemd-resolved.service: Failed to set up mount namespacing: Invalid argument
      
Feb 12 14:23:21 prod-delayed-jobs systemd[11813]: systemd-resolved.service: Failed at step NAMESPACE spawning /lib/systemd/systemd-resolved
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=226/NAMESPACE
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Failed to start Network Name Resolution.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Service has no hold-off time, scheduling restart.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 2.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopped Network Name Resolution.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: /dev/null is not a device.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Starting Network Name Resolution...
      
Feb 12 14:23:22 prod-delayed-jobs systemd[11831]: systemd-resolved.service: Failed to set up mount namespacing: Invalid argument
      
Feb 12 14:23:22 prod-delayed-jobs systemd[11831]: systemd-resolved.service: Failed at step NAMESPACE spawning /lib/systemd/systemd-resolved
      
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=226/NAMESPACE
      
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.
      
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: Failed to start Network Name Resolution.
      
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Service has no hold-off time, scheduling restart.
      
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 3.



      /etc/fstab contents - in case this is relevant



      UUID=2f54e8e6-ff9c-497a-88ea-ce159f6cd283 /               ext4    discard,errors=remount-ro 0       1
      
/dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0
      
//[REDACTED]/uploaded_files /home/myuser/shared cifs rw,username=myuser,password=[REDACTED],uid=myuser,gid=myuser 0 0


      Few systemd configuration files are pointing to /dev/null



      This is the case on all the 4 machines, however only 2 out of these 4 are having trouble with systemd-resolved. Strangely, hostname.service is pointing to /dev/null - wonder why?



      lrwxrwxrwx 1 root root    9 Nov 15 21:45 bootlogd.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 bootlogs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 bootmisc.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 checkfs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 checkroot-bootclean.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 checkroot.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 cryptdisks-early.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 cryptdisks.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 fuse.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 halt.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 hostname.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 hwclock.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 killprocs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Apr 12  2018 lvm2.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Jul  2  2018 mdadm.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Jul  2  2018 mdadm-waitidle.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 motd.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountall-bootclean.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountall.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountdevsubfs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountkernfs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountnfs-bootclean.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountnfs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Jan 16  2018 nfs-common.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 rc.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 rcS.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 reboot.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 rmnologin.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Dec  6 11:10 screen-cleanup.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 sendsigs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 single.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 stop-bootlogd.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 stop-bootlogd-single.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Dec  6 11:07 sudo.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 umountfs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 umountnfs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 umountroot.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 x11-common.service -> /dev/null


      /lib/systemd/system



      [Unit]
      
Description=Network Name Resolution
      
Documentation=man:systemd-resolved.service(8)
      
Documentation=https://www.freedesktop.org/wiki/Software/systemd/resolved
      
Documentation=https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers
      
Documentation=https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients
      
DefaultDependencies=no
      
After=systemd-sysusers.service systemd-networkd.service
      
Before=network.target nss-lookup.target shutdown.target
      
Conflicts=shutdown.target
      
Wants=nss-lookup.target
      

      
[Service]
      
Type=notify
      
Restart=always
      
RestartSec=0
      
ExecStart=!!/lib/systemd/systemd-resolved
      
WatchdogSec=3min
      
User=systemd-resolve
      
CapabilityBoundingSet=CAP_SETPCAP CAP_NET_RAW CAP_NET_BIND_SERVICE
      
AmbientCapabilities=CAP_SETPCAP CAP_NET_RAW CAP_NET_BIND_SERVICE
      
PrivateTmp=yes
      
PrivateDevices=yes
      
ProtectSystem=strict
      
ProtectHome=yes
      
ProtectControlGroups=yes
      
ProtectKernelTunables=yes
      
ProtectKernelModules=yes
      
MemoryDenyWriteExecute=yes
      
RestrictRealtime=yes
      
RestrictAddressFamilies=AF_UNIX AF_NETLINK AF_INET AF_INET6
      
SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @mount @obsolete @raw-io @reboot @swap





      18.04 samba systemd systemd-resolved







      share|improve this question














      Problem



      I'm trying to investigate this weird error where systemd-resolved is constantly crashing on 2 out of 4 machines. The one thing different with these two problematic machines (that I can think of), is that they are mounting a samba/cifs filesystem exported from machine #3 (on which systemd-resolved is running fine).



      How do I get to the bottom of this?



      OS



      # cat /etc/lsb-release 
      
DISTRIB_ID=Ubuntu
      
DISTRIB_RELEASE=18.04
      
DISTRIB_CODENAME=bionic
      
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
      

      
# uname -a
      
Linux prod-delayed-jobs 4.15.0-42-generic #45-Ubuntu SMP Thu Nov 15 19:32:57 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
      

      
# systemd --version
      
systemd 237
      
+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybrid


      Relevant journalctl output



      Notice the /dev/null is not a device. line in the logs. This is occurring multiple times - during, before, and after systemd-resolved crashes.



      Feb 12 14:23:21 prod-delayed-jobs dhclient[794]: DHCPREQUEST of [REDACTED-IP-ADDRESS] on eth0 to 172.31.1.1 port 67 (xid=0x730cc4e4)
      
Feb 12 14:23:21 prod-delayed-jobs dhclient[794]: DHCPACK of [REDACTED-IP-ADDRESS] from 172.31.1.1
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopping Network Name Resolution...
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopped Network Name Resolution.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: /dev/null is not a device.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Starting Network Name Resolution...
      
Feb 12 14:23:21 prod-delayed-jobs systemd[11796]: systemd-resolved.service: Failed to set up mount namespacing: Invalid argument
      
Feb 12 14:23:21 prod-delayed-jobs systemd[11796]: systemd-resolved.service: Failed at step NAMESPACE spawning /lib/systemd/systemd-resolved
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=226/NAMESPACE
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Failed to start Network Name Resolution.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Service has no hold-off time, scheduling restart.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 1.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopped Network Name Resolution.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: /dev/null is not a device.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Starting Network Name Resolution...
      
Feb 12 14:23:21 prod-delayed-jobs dhclient[794]: bound to [REDACTED-IP-ADDRESS] -- renewal in 32497 seconds.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[11813]: systemd-resolved.service: Failed to set up mount namespacing: Invalid argument
      
Feb 12 14:23:21 prod-delayed-jobs systemd[11813]: systemd-resolved.service: Failed at step NAMESPACE spawning /lib/systemd/systemd-resolved
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=226/NAMESPACE
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Failed to start Network Name Resolution.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Service has no hold-off time, scheduling restart.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 2.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Stopped Network Name Resolution.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: /dev/null is not a device.
      
Feb 12 14:23:21 prod-delayed-jobs systemd[1]: Starting Network Name Resolution...
      
Feb 12 14:23:22 prod-delayed-jobs systemd[11831]: systemd-resolved.service: Failed to set up mount namespacing: Invalid argument
      
Feb 12 14:23:22 prod-delayed-jobs systemd[11831]: systemd-resolved.service: Failed at step NAMESPACE spawning /lib/systemd/systemd-resolved
      
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Main process exited, code=exited, status=226/NAMESPACE
      
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Failed with result 'exit-code'.
      
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: Failed to start Network Name Resolution.
      
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Service has no hold-off time, scheduling restart.
      
Feb 12 14:23:22 prod-delayed-jobs systemd[1]: systemd-resolved.service: Scheduled restart job, restart counter is at 3.



      /etc/fstab contents - in case this is relevant



      UUID=2f54e8e6-ff9c-497a-88ea-ce159f6cd283 /               ext4    discard,errors=remount-ro 0       1
      
/dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0
      
//[REDACTED]/uploaded_files /home/myuser/shared cifs rw,username=myuser,password=[REDACTED],uid=myuser,gid=myuser 0 0


      Few systemd configuration files are pointing to /dev/null



      This is the case on all the 4 machines, however only 2 out of these 4 are having trouble with systemd-resolved. Strangely, hostname.service is pointing to /dev/null - wonder why?



      lrwxrwxrwx 1 root root    9 Nov 15 21:45 bootlogd.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 bootlogs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 bootmisc.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 checkfs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 checkroot-bootclean.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 checkroot.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 cryptdisks-early.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 cryptdisks.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 fuse.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 halt.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 hostname.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 hwclock.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 killprocs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Apr 12  2018 lvm2.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Jul  2  2018 mdadm.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Jul  2  2018 mdadm-waitidle.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 motd.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountall-bootclean.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountall.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountdevsubfs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountkernfs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountnfs-bootclean.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 mountnfs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Jan 16  2018 nfs-common.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 rc.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 rcS.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 reboot.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 rmnologin.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Dec  6 11:10 screen-cleanup.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 sendsigs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 single.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 stop-bootlogd.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 stop-bootlogd-single.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Dec  6 11:07 sudo.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 umountfs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 umountnfs.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 umountroot.service -> /dev/null
      
lrwxrwxrwx 1 root root    9 Nov 15 21:45 x11-common.service -> /dev/null


      /lib/systemd/system



      [Unit]
      
Description=Network Name Resolution
      
Documentation=man:systemd-resolved.service(8)
      
Documentation=https://www.freedesktop.org/wiki/Software/systemd/resolved
      
Documentation=https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers
      
Documentation=https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients
      
DefaultDependencies=no
      
After=systemd-sysusers.service systemd-networkd.service
      
Before=network.target nss-lookup.target shutdown.target
      
Conflicts=shutdown.target
      
Wants=nss-lookup.target
      

      
[Service]
      
Type=notify
      
Restart=always
      
RestartSec=0
      
ExecStart=!!/lib/systemd/systemd-resolved
      
WatchdogSec=3min
      
User=systemd-resolve
      
CapabilityBoundingSet=CAP_SETPCAP CAP_NET_RAW CAP_NET_BIND_SERVICE
      
AmbientCapabilities=CAP_SETPCAP CAP_NET_RAW CAP_NET_BIND_SERVICE
      
PrivateTmp=yes
      
PrivateDevices=yes
      
ProtectSystem=strict
      
ProtectHome=yes
      
ProtectControlGroups=yes
      
ProtectKernelTunables=yes
      
ProtectKernelModules=yes
      
MemoryDenyWriteExecute=yes
      
RestrictRealtime=yes
      
RestrictAddressFamilies=AF_UNIX AF_NETLINK AF_INET AF_INET6
      
SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @mount @obsolete @raw-io @reboot @swap





      18.04 samba systemd systemd-resolved




      18.04 samba systemd systemd-resolved






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Feb 13 at 6:23









      Saurabh NandaSaurabh Nanda

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          張江高科駅

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          張江高科駅 ちょうこうこうか Zhangjiang Hi-Tech Park 所在地 中国上海市浦東新区 所属事業者 上海地鉄運営有限公司（上海軌道交通・駅詳細） 上海浦東現代有軌交通有限公司（駅詳細） テンプレートを表示 張江高科駅 各種表記 繁体字： 張江高科站 簡体字： 张江高科站 拼音 ： Zhàngjiāng Gāokē Zhàn 発音： ヂャンジャン ガオクー ヂャン 英文： Zhangjiang Hi-Tech Park Station テンプレートを表示 張江高科駅 （ちょうこうこうか-えき）は中華人民共和国上海市浦東新区に位置する、上海軌道交通2号線の駅である。 なお、張江高科駅前にある張江軌道電車の 張江地鉄駅駅 についてもここで述べる。 目次 1 利用可能な鉄道路線 2 沿革 3 駅構造 3.1 上海軌道交通 3.2 張江軌道電車 4 駅周辺 5 隣の駅 6 注釈 7 関連項目 利用可能な鉄道路線 上海軌道交通 ■ 2号線 上海浦東現代有軌交通有限公司 ■ 張江軌道電車 沿革 高架駅時代の姿 2000年12月27日 - 2号線の駅が高架駅として開業。 2010年 1月1日 - 張江軌道電車の開業に伴い、張江地鉄駅駅（停留所）を設置。 2月13日 - 駅地下化に伴い高架駅の運用停止。 2月24日 - 10日間の閉鎖を経て地下新駅の開業。 2017年2月9日 - リニューアル工事を経て再開業。乗降客の増加に対応し、ホームへのエレベーター、エスカレーターを増設、券売機エリアを拡張した [1] 。 駅構造 上海軌道交通 上海軌道交通 張江高科駅 5号口 ちょうこうこうか Zhangjiang Hi-Tech Park ◄ 竜陽路 (2.60km) (1.61km) 金科路 ► 所在地 中国上海市浦東新区松涛路 祖冲之路 （中国語版） 北緯31度12分11秒 東経121度34分50秒  /  北緯31.2...
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