Merge branch 'kerberized-nfs'

nfs-client/files/create_netdir.sh

-#!/bin/bash
-
-if [ ! -h /$1 ]; then
-	rm /$1
-	rmdir /$1
-	ln -s /net/$1 /$1
-fi
-

nfs-client/files/modprobe-nfs.conf

+options nfs nfs4_disable_idmapping=N

nfs-client/handlers/main.yml

@@ -7,8 +7,5 @@
 - name: restart nfs-common
   service: name=nfs-common state=restarted
 
-- name: reload sysfs.conf
-  service: name=sysfsutils state=restarted
-
 - name: reload sysctl
   command: sysctl -p

nfs-client/tasks/main.yml

@@ -2,42 +2,30 @@
 # file: roles/nfs-client/tasks/main.yml
 
 - name: ensure nfs client utils are installed
-  apt: name=nfs-common state=latest
-  tags:
-    - nfs-client
-    - packages
-
-- name: ensure CIFS utils are installed
-  apt: name=cifs-utils,smbclient state=latest
-  tags:
-    - nfs-client
-    - cifs-client
-    - packages
-
-- name: ensure sysfs-utils are installed
-  apt: name=sysfsutils state=present
+  apt: name="{{ item }}" state=installed
+  with_items:
+    - nfs-common
+    - libgssrpc4
+    - librpcsecgss3
+    - autofs
   tags:
     - nfs-client
     - packages
 
-- name: ensure we use the idmapper
-  command: 'echo "N" > /sys/module/nfs/parameters/nfs4_disable_idmapping'
-  notify:
-    - restart nfs-common
-  tags:
-    - nfs-client
-    - sysfs
-    - config
-
-- name: ensure we use the idmapper after a reboot
-  lineinfile: line="module/nfs/parameters/nfs4_disable_idmapping = N" dest=/etc/sysfs.conf create=yes
-  notify:
-    - reload sysfs.conf
-    - restart nfs-common
-  tags:
-    - nfs-client
-    - sysfs
-    - config
+#- name: ensure we use the idmapper
+#  copy: content="N" dest=/sys/module/nfs/parameters/nfs4_disable_idmapping
+#  notify:
+#    - restart nfs-common
+#    - restart autofs
+#  tags:
+#    - nfs-client
+#    - config
+#
+#- name: ensure we use the idmapper after a reboot
+#  copy: src=modprobe-nfs.conf dest=/etc/modprobe.d/nfs.conf owner=root group=root mode=0644
+#  tags:
+#    - nfs-client
+#    - config
 
 - name: ensure the kernel key storage quote used for idmapping is sufficiently high
   sysctl: name=kernel.keys.root_maxkeys state=present value=1000 # default is 200, this quote was reached
@@ -59,13 +47,12 @@
     - sysctl
     - config
 
-# makes life much easier to have an automounter and not /etc/fstab
-- name: ensure automounter is installed
-  apt: name=autofs state=latest
+- name: ensure there is a base directory for automount
+  file: state=directory path=/net owner=root group=root mode=0755
+  notify:
+    - restart autofs
   tags:
     - nfs-client
-    - autofs
-    - packages
 
 - name: ensure automounter is configured
   copy: src=auto.master dest=/etc/auto.master owner=root group=root mode=0644
@@ -73,39 +60,33 @@
     - restart autofs
   tags:
     - nfs-client
-    - autofs
     - config
 
 - name: ensure mounts from central storage are available
   template: src=auto.nfs.j2 dest=/etc/auto.nfs owner=root group=root mode=0644
   notify:
-    - nfs-client
     - restart autofs
   tags:
-    - autofs
+    - nfs-client
     - config
 
 - name: ensure automounter is enabled
   service: name=autofs state=running enabled=yes
   tags:
     - nfs-client
-    - autofs
     - service
 
-- name: ensure linking of home
-  script: create_netdir.sh home
+- name: ensure linking of netdirs
+  file: src="/net/{{ item.netdir }}" dest="/{{ item.dest }}" state=link force=yes
+  with_items: "{{ nfs_shares }}"
   tags:
     - nfs-client
-    - fsmpi
-    - autofs
 
-- name: ensure linking of pub
-  script: create_netdir.sh pub
+- name: configure default umask and other user related stuff
+  copy: src=login.defs dest=/etc/login.defs owner=root group=root mode=0644
   tags:
     - nfs-client
-    - fsmpi
-    - autofs
+    - umask
+    - config
 
 - meta: flush_handlers
-- include: umask.yml
-- meta: flush_handlers

nfs-client/tasks/umask.yml

----
-# file: roles/client/tasks/main.yml
-
-- name: configure default umask and other user related stuff
-  copy: src=login.defs dest=/etc/login.defs owner=root group=root mode=0644
-  tags:
-    - umask
-    - config
-
-- name: activate pam.d session modules to set default umask
-  lineinfile: dest=/etc/pam.d/common-session line="session optional                        pam_umask.so"
-  tags:
-    - umask
-    - pam
-    - config

nfs-client/templates/auto.nfs.j2

-{% for share in nfsshares %}
-{{ share }}
-{% endfor %}
+{%- for share in nfs_shares %}
+{{ share.netdir }} -{{ share.options }} {{ share.src }}
+{% endfor -%}

nfs-server/files/auto.master

+#
+# Sample auto.master file
+# This is an automounter map and it has the following format
+# key [ -mount-options-separated-by-comma ] location
+# For details of the format look at autofs(5).
+#
+#/misc	/etc/auto.misc
+#
+# NOTE: mounts done from a hosts map will be mounted with the
+#	"nosuid" and "nodev" options unless the "suid" and "dev"
+#	options are explicitly given.
+#
+#/net	-hosts
+/net	/etc/auto.nfs
+#
+# Include central master map if it can be found using
+# nsswitch sources.
+#
+# Note that if there are entries for /net or /misc (as
+# above) in the included master map any keys that are the
+# same will not be seen as the first read key seen takes
+# precedence.
+#
++auto.master

nfs-server/files/login.defs

+#
+# /etc/login.defs - Configuration control definitions for the login package.
+#
+# Three items must be defined:  MAIL_DIR, ENV_SUPATH, and ENV_PATH.
+# If unspecified, some arbitrary (and possibly incorrect) value will
+# be assumed.  All other items are optional - if not specified then
+# the described action or option will be inhibited.
+#
+# Comment lines (lines beginning with "#") and blank lines are ignored.
+#
+# Modified for Linux.  --marekm
+
+# REQUIRED for useradd/userdel/usermod
+#   Directory where mailboxes reside, _or_ name of file, relative to the
+#   home directory.  If you _do_ define MAIL_DIR and MAIL_FILE,
+#   MAIL_DIR takes precedence.
+#
+#   Essentially:
+#      - MAIL_DIR defines the location of users mail spool files
+#        (for mbox use) by appending the username to MAIL_DIR as defined
+#        below.
+#      - MAIL_FILE defines the location of the users mail spool files as the
+#        fully-qualified filename obtained by prepending the user home
+#        directory before $MAIL_FILE
+#
+# NOTE: This is no more used for setting up users MAIL environment variable
+#       which is, starting from shadow 4.0.12-1 in Debian, entirely the
+#       job of the pam_mail PAM modules
+#       See default PAM configuration files provided for
+#       login, su, etc.
+#
+# This is a temporary situation: setting these variables will soon
+# move to /etc/default/useradd and the variables will then be
+# no more supported
+MAIL_DIR        /var/mail
+#MAIL_FILE      .mail
+
+#
+# Enable logging and display of /var/log/faillog login failure info.
+# This option conflicts with the pam_tally PAM module.
+#
+FAILLOG_ENAB		yes
+
+#
+# Enable display of unknown usernames when login failures are recorded.
+#
+# WARNING: Unknown usernames may become world readable. 
+# See #290803 and #298773 for details about how this could become a security
+# concern
+LOG_UNKFAIL_ENAB	no
+
+#
+# Enable logging of successful logins
+#
+LOG_OK_LOGINS		no
+
+#
+# Enable "syslog" logging of su activity - in addition to sulog file logging.
+# SYSLOG_SG_ENAB does the same for newgrp and sg.
+#
+SYSLOG_SU_ENAB		yes
+SYSLOG_SG_ENAB		yes
+
+#
+# If defined, all su activity is logged to this file.
+#
+#SULOG_FILE	/var/log/sulog
+
+#
+# If defined, file which maps tty line to TERM environment parameter.
+# Each line of the file is in a format something like "vt100  tty01".
+#
+#TTYTYPE_FILE	/etc/ttytype
+
+#
+# If defined, login failures will be logged here in a utmp format
+# last, when invoked as lastb, will read /var/log/btmp, so...
+#
+FTMP_FILE	/var/log/btmp
+
+#
+# If defined, the command name to display when running "su -".  For
+# example, if this is defined as "su" then a "ps" will display the
+# command is "-su".  If not defined, then "ps" would display the
+# name of the shell actually being run, e.g. something like "-sh".
+#
+SU_NAME		su
+
+#
+# If defined, file which inhibits all the usual chatter during the login
+# sequence.  If a full pathname, then hushed mode will be enabled if the
+# user's name or shell are found in the file.  If not a full pathname, then
+# hushed mode will be enabled if the file exists in the user's home directory.
+#
+HUSHLOGIN_FILE	.hushlogin
+#HUSHLOGIN_FILE	/etc/hushlogins
+
+#
+# *REQUIRED*  The default PATH settings, for superuser and normal users.
+#
+# (they are minimal, add the rest in the shell startup files)
+ENV_SUPATH	PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+ENV_PATH	PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
+
+#
+# Terminal permissions
+#
+#	TTYGROUP	Login tty will be assigned this group ownership.
+#	TTYPERM		Login tty will be set to this permission.
+#
+# If you have a "write" program which is "setgid" to a special group
+# which owns the terminals, define TTYGROUP to the group number and
+# TTYPERM to 0620.  Otherwise leave TTYGROUP commented out and assign
+# TTYPERM to either 622 or 600.
+#
+# In Debian /usr/bin/bsd-write or similar programs are setgid tty
+# However, the default and recommended value for TTYPERM is still 0600
+# to not allow anyone to write to anyone else console or terminal
+
+# Users can still allow other people to write them by issuing 
+# the "mesg y" command.
+
+TTYGROUP	tty
+TTYPERM		0600
+
+#
+# Login configuration initializations:
+#
+#	ERASECHAR	Terminal ERASE character ('\010' = backspace).
+#	KILLCHAR	Terminal KILL character ('\025' = CTRL/U).
+#	UMASK		Default "umask" value.
+#
+# The ERASECHAR and KILLCHAR are used only on System V machines.
+# 
+# UMASK is the default umask value for pam_umask and is used by
+# useradd and newusers to set the mode of the new home directories.
+# 022 is the "historical" value in Debian for UMASK
+# 027, or even 077, could be considered better for privacy
+# There is no One True Answer here : each sysadmin must make up his/her
+# mind.
+#
+# Prefix these values with "0" to get octal, "0x" to get hexadecimal.
+#
+ERASECHAR	0177
+KILLCHAR	025
+UMASK		002
+
+#
+# Password aging controls:
+#
+#	PASS_MAX_DAYS	Maximum number of days a password may be used.
+#	PASS_MIN_DAYS	Minimum number of days allowed between password changes.
+#	PASS_WARN_AGE	Number of days warning given before a password expires.
+#
+PASS_MAX_DAYS	99999
+PASS_MIN_DAYS	0
+PASS_WARN_AGE	7
+
+#
+# Min/max values for automatic uid selection in useradd
+#
+UID_MIN			 1000
+UID_MAX			60000
+# System accounts
+#SYS_UID_MIN		  100
+#SYS_UID_MAX		  999
+
+#
+# Min/max values for automatic gid selection in groupadd
+#
+GID_MIN			 1000
+GID_MAX			60000
+# System accounts
+#SYS_GID_MIN		  100
+#SYS_GID_MAX		  999
+
+#
+# Max number of login retries if password is bad. This will most likely be
+# overriden by PAM, since the default pam_unix module has it's own built
+# in of 3 retries. However, this is a safe fallback in case you are using
+# an authentication module that does not enforce PAM_MAXTRIES.
+#
+LOGIN_RETRIES		5
+
+#
+# Max time in seconds for login
+#
+LOGIN_TIMEOUT		60
+
+#
+# Which fields may be changed by regular users using chfn - use
+# any combination of letters "frwh" (full name, room number, work
+# phone, home phone).  If not defined, no changes are allowed.
+# For backward compatibility, "yes" = "rwh" and "no" = "frwh".
+# 
+CHFN_RESTRICT		rwh
+
+#
+# Should login be allowed if we can't cd to the home directory?
+# Default in no.
+#
+DEFAULT_HOME	yes
+
+#
+# If defined, this command is run when removing a user.
+# It should remove any at/cron/print jobs etc. owned by
+# the user to be removed (passed as the first argument).
+#
+#USERDEL_CMD	/usr/sbin/userdel_local
+
+#
+# If set to yes, userdel will remove the user´s group if it contains no
+# more members, and useradd will create by default a group with the name
+# of the user.
+#
+# Other former uses of this variable such as setting the umask when
+# user==primary group are not used in PAM environments, such as Debian
+#
+USERGROUPS_ENAB yes
+
+#
+# Instead of the real user shell, the program specified by this parameter
+# will be launched, although its visible name (argv[0]) will be the shell's.
+# The program may do whatever it wants (logging, additional authentification,
+# banner, ...) before running the actual shell.
+#
+# FAKE_SHELL /bin/fakeshell
+
+#
+# If defined, either full pathname of a file containing device names or
+# a ":" delimited list of device names.  Root logins will be allowed only
+# upon these devices.
+#
+# This variable is used by login and su.
+#
+#CONSOLE	/etc/consoles
+#CONSOLE	console:tty01:tty02:tty03:tty04
+
+#
+# List of groups to add to the user's supplementary group set
+# when logging in on the console (as determined by the CONSOLE
+# setting).  Default is none.
+#
+# Use with caution - it is possible for users to gain permanent
+# access to these groups, even when not logged in on the console.
+# How to do it is left as an exercise for the reader...
+#
+# This variable is used by login and su.
+#
+#CONSOLE_GROUPS		floppy:audio:cdrom
+
+#
+# If set to "yes", new passwords will be encrypted using the MD5-based
+# algorithm compatible with the one used by recent releases of FreeBSD.
+# It supports passwords of unlimited length and longer salt strings.
+# Set to "no" if you need to copy encrypted passwords to other systems
+# which don't understand the new algorithm.  Default is "no".
+#
+# This variable is deprecated. You should use ENCRYPT_METHOD.
+#
+#MD5_CRYPT_ENAB	no
+
+#
+# If set to MD5 , MD5-based algorithm will be used for encrypting password
+# If set to SHA256, SHA256-based algorithm will be used for encrypting password
+# If set to SHA512, SHA512-based algorithm will be used for encrypting password
+# If set to DES, DES-based algorithm will be used for encrypting password (default)
+# Overrides the MD5_CRYPT_ENAB option
+#
+# Note: It is recommended to use a value consistent with
+# the PAM modules configuration.
+#
+ENCRYPT_METHOD SHA512
+
+#
+# Only used if ENCRYPT_METHOD is set to SHA256 or SHA512.
+#
+# Define the number of SHA rounds.
+# With a lot of rounds, it is more difficult to brute forcing the password.
+# But note also that it more CPU resources will be needed to authenticate
+# users.
+#
+# If not specified, the libc will choose the default number of rounds (5000).
+# The values must be inside the 1000-999999999 range.
+# If only one of the MIN or MAX values is set, then this value will be used.
+# If MIN > MAX, the highest value will be used.
+#
+# SHA_CRYPT_MIN_ROUNDS 5000
+# SHA_CRYPT_MAX_ROUNDS 5000
+
+################# OBSOLETED BY PAM ##############
+#						#
+# These options are now handled by PAM. Please	#
+# edit the appropriate file in /etc/pam.d/ to	#
+# enable the equivelants of them.
+#
+###############
+
+#MOTD_FILE
+#DIALUPS_CHECK_ENAB
+#LASTLOG_ENAB
+#MAIL_CHECK_ENAB
+#OBSCURE_CHECKS_ENAB
+#PORTTIME_CHECKS_ENAB
+#SU_WHEEL_ONLY
+#CRACKLIB_DICTPATH
+#PASS_CHANGE_TRIES
+#PASS_ALWAYS_WARN
+#ENVIRON_FILE
+#NOLOGINS_FILE
+#ISSUE_FILE
+#PASS_MIN_LEN
+#PASS_MAX_LEN
+#ULIMIT
+#ENV_HZ
+#CHFN_AUTH
+#CHSH_AUTH
+#FAIL_DELAY
+
+################# OBSOLETED #######################
+#						  #
+# These options are no more handled by shadow.    #
+#                                                 #
+# Shadow utilities will display a warning if they #
+# still appear.                                   #
+#                                                 #
+###################################################
+
+# CLOSE_SESSIONS
+# LOGIN_STRING
+# NO_PASSWORD_CONSOLE
+# QMAIL_DIR
+
+
+

nfs-server/files/modprobe-nfs.conf

+options nfs nfs4_disable_idmapping=N

nfs-server/handlers/main.yml

+---
+# file: roles/nfs-client/handlers/main.yml
+
+- name: restart autofs
+  service: name=autofs state=restarted
+
+- name: restart nfs-common
+  service: name=nfs-common state=restarted
+
+- name: reload sysctl
+  command: sysctl -p

nfs-server/tasks/main.yml

+---
+# file: roles/nfs-server/tasks/main.yml
+
+- name: ensure nfs server utils are installed
+  apt: name="{{ item }}" state=installed
+  with_items:
+    - nfs-common
+    - nfs-kernel-server
+    - msktutils
+    - librpcsecgss3
+    - libgssrpc4
+  tags:
+    - nfs-server
+    - packages
+
+- name: ensure default umask and other user related stuff
+  copy: src=login.defs dest=/etc/login.defs owner=root group=root mode=0644
+  tags:
+    - nfs-server
+    - umask
+    - config
+
+- name: ensure exports configuration is in place
+  template: src=exports.j2 dest=/etc/exports owner=root group=root mode=0644
+  notify:
+    - restart nfs-server
+  tags:
+    - nfs-server
+    - config
+
+- name: ensure nfs-common is configured
+  copy: src=nfs-common dest=/etc/default/nfs-common owner=root group=root mode=0644
+  notify:
+    - restart nfs-server
+  tags:
+    - nfs-server
+    - config
+
+- name: ensure nfs-kernel-server is configured
+  copy: src=nfs-kernel-server dest=/etc/default/nfs-kernel-server owner=root group=root mode=0644
+  notify:
+    - restart nfs-server
+  tags:
+    - nfs-server
+    - config
+
+- name: ensure nfs-server is enabled and running
+  service: name=nfs-server state=running enabled=yes
+  tags:
+    - nfs-server
+    - service
+
+- name: ensure that there is a keytab available
+  file: path=/etc/krb5.keytab state=present
+  tags:
+    - nfs-server
+    - service-principal
+
+- name: check that we have a valid service principal
+  shell: klist -k /etc/krb5.keytab | grep nfs/{{ ansible_fqdn }}
+  register: principal
+  failed_when: False
+  tags:
+    - nfs-server
+    - service-principal
+
+- block:
+    - name: test if there is a nfs-user account
+      shell: samba-tool user list | grep nfs-user
+      register: nfsuser
+      failed_when: False
+      delegate_to: "{{ authservers[0] }}"
+      tags:
+        - nfs-server
+        - service-principal
+
+    - name: ensure there is a nfs-user account
+      command: samba-tool user create nfs-user --random-password
+      when: nfsuser.rc == 1
+      delegate_to: "{{ authservers[0] }}"
+      tags:
+        - nfs-server
+        - service-principal
+
+    - name: create service principal
+      command: "samba-tool spn add nfs/{{ ansible_fqdn }} nfs-user"
+      delegate_to: "{{ authservers[0] }}"
+      tags:
+        - nfs-server
+        - service-principal
+
+    - name: export keytab
+      command: "samba-tool domain exportkeytab /root/{{ ansible_fqdn }}.keytab --principal nfs/{{ ansible_fqdn }}"
+        creates: "/root/{{ ansible_fqdn }}.keytab"
+      delegate_to: "{{ authservers[0] }}"
+      tags:
+        - nfs-server
+        - service-principal
+
+    - name: copy keytab
+      synchronize:
+        src: "/root/{{ ansible_fqdn }}.keytab"
+        dest: "{{ ansible_fqdn }}:/root/{{ ansible_fqdn }}.keytab"
+      delegate_to: "{{ authservers[0] }}"
+      tags:
+        - nfs-server
+        - service-principal
+
+    - name: ensure pexpect is installed
+      apt: name=python-pexpect state=installed
+      tags:
+        - nfs-server
+        - service-principal
+
+    - name: merge keytabs
+      - expect:
+          command: ktutil
+          responses:
+            ktutil(.*):
+              - rkt /etc/krb5.keytab
+              - "rkt /root/{{ ansible_fqdn }}.keytab"
+              - wkt /etc/krb5.keytab
+              - exit
+      notify:
+        - restart nfs-server
+      tags:
+        - nfs-server
+        - service-principal
+
+    - name: remove keytab at kdc
+      file: path="/root/{{ ansible_fqdn }}.keytab" state=absent
+      delegate_to: "{{ authservers[0] }}"
+      tags:
+        - nfs-server
+        - service-principal
+
+    - name: remove keytab at host
+      file: path="/root/{{ ansible_fqdn }}.keytab" state=absent
+      tags:
+        - nfs-server
+        - service-principal
+  when: principal.rc == 1
+
+- meta: flush_handlers

nfs-server/templates/auto.nfs.j2

+{%- for share in nfs_shares %}
+{{ share.netdir }} -{{ share.options }} {{ share.src }}
+{% endfor -%}