Ubuntu Devstack部署openstack无法启动iSCSI启动器守护程序（iscsid）

我使用devstack通过文档（）部署openstack

失败是这样的：

1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up open-iscsi (2.0.873+git0.3b4b4500-14ubuntu3.3) ...
Job for iscsid.service failed because a configured resource limit was exceeded. See "systemctl status iscsid.service" and "journalctl -xe" for details.
invoke-rc.d: initscript iscsid, action "start" failed.
* iscsid.service - iSCSI initiator daemon (iscsid)
   Loaded: loaded (/lib/systemd/system/iscsid.service; enabled; vendor preset: enabled)
   Active: failed (Result: resources) since Thu 2017-06-08 01:26:49 UTC; 6ms ago
     Docs: man:iscsid(8)
  Process: 16691 ExecStart=/sbin/iscsid (code=exited, status=0/SUCCESS)
  Process: 16686 ExecStartPre=/lib/open-iscsi/startup-checks.sh (code=exited, status=0/SUCCESS)

Jun 08 01:26:49 localhost systemd[1]: Starting iSCSI initiator daemon (iscs.....
Jun 08 01:26:49 localhost iscsid[16691]: iSCSI logger with pid=16692 started!
Jun 08 01:26:49 localhost systemd[1]: iscsid.service: Failed to read PID fr...nt
Jun 08 01:26:49 localhost iscsid[16692]: iSCSI daemon with pid=16693 started!
Jun 08 01:26:49 localhost iscsid[16692]: can not create NETLINK_ISCSI socket
Jun 08 01:26:49 localhost systemd[1]: iscsid.service: Daemon never wrote it...g.
Jun 08 01:26:49 localhost systemd[1]: Failed to start iSCSI initiator daemo...).
Jun 08 01:26:49 localhost systemd[1]: iscsid.service: Unit entered failed state.
Jun 08 01:26:49 localhost systemd[1]: iscsid.service: Failed with result 'r...'.
Hint: Some lines were ellipsized, use -l to show in full.
dpkg: error processing package open-iscsi (--configure):
 subprocess installed post-installation script returned error exit status 1
Processing triggers for initramfs-tools (0.122ubuntu8.8) ...
update-initramfs: Generating /boot/initrd.img-4.4.0-36-generic
cryptsetup: WARNING: failed to detect canonical device of /dev/sda
cryptsetup: WARNING: could not determine root device from /etc/fstab
Errors were encountered while processing:
 open-iscsi
E: Sub-process /usr/bin/dpkg returned an error code (1)
+functions-common:apt_get:1                exit_trap
+./stack.sh:exit_trap:492                  local r=100
++./stack.sh:exit_trap:493                  jobs -p
+./stack.sh:exit_trap:493                  jobs=
+./stack.sh:exit_trap:496                  [[ -n '' ]]
+./stack.sh:exit_trap:502                  kill_spinner
+./stack.sh:kill_spinner:388               '[' '!' -z '' ']'
+./stack.sh:exit_trap:504                  [[ 100 -ne 0 ]]
+./stack.sh:exit_trap:505                  echo 'Error on exit'
Error on exit
+./stack.sh:exit_trap:506                  generate-subunit 1496885135 78 fail
./stack.sh: line 506: generate-subunit: command not found

我使用linode vps，操作系统是ubuntu16.04LTS，内核为4.8.3-x86_64-linode76

顺便说一下，我在linode vps上尝试了centos 7，遇到了同样的问题，完全一样。

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我该怎么办？

看起来iscsid启动不正确。您有“iscsid.socket”服务吗？如果是，是否已启用并启动？如果是这样，那可能就是问题所在。如果不是，那是另外一回事。其他可能性：是否已运行iscsid？看起来只是创建套接字失败了。这是不正常的，除非（1）您不是root用户，（2）系统内存不足，或者（3）已经有人在使用该套接字（如另一个iscsid）。此外，您是否可以包括您的iscsid.service systemd单元文件？