[Samba] CTDB: Failed to connect client socket to daemon.

[Achim Gottinger]

Am 17.08.2014 11:25, schrieb steve:
> On Sat, 2014-08-16 at 19:57 +0200, Achim Gottinger wrote:
>> Am 16.08.2014 19:39, schrieb steve:
>>> On Sat, 2014-08-16 at 18:09 +0200, Achim Gottinger wrote:
>>>> Am 16.08.2014 15:52, schrieb steve:
>>>>> Ubuntu 14.04, ctdb 2.5.3, samba 4.1.11. CTDB is working with IP takeover
>>>>> between the 2 nodes. The machine is joined to the domain.
>>>>>
>>>>> Any help with the following errors would be most gratefully received.
>>>>>
>>>>> 1. connect to socket error:
>>>>> ctdb status
>>>>> 2014/08/16 15:32:03.248034 [23255]: client/ctdb_client.c:267 Failed to
>>>>> connect client socket to daemon. Errno:Connection refused(111)
>>>>> common/cmdline.c:156 Failed to connect to daemon
>>>> What's the output of ls -l /usr/local/var/run/ctdb/ ?
>>>    ls -l /usr/local/var/run/ctdb
>>> total 0
>>> srwx------ 1 root root 0 ago 16 19:32 ctdbd.socket
>>>
>>> The socket is there and is renewed upon each ctdb (re) start. smb.conf
>>> refers to the same socket.
>> Guess that's ok. Maybe the log is more helpfull with CTDB_DEBUGLEVEL=4
>> (an recommendation i found on an other therad about ctdb issues).
> Hi
> This solves the socket problem:
> /etc/default/ctdb
>
> #CTDB_SOCKET=/usr/local/var/run/ctdb/ctdbd.socket
> export CTDB_SOCKET
Seen this mentined here. 
http://lists.opensuse.org/opensuse-bugs/2013-07/msg03469.html. Assumed 
the thread was to old to be relevant here. :-\
>
> and indeed:
>   sudo ctdb status
> Number of nodes:2
> pnn:0 192.168.0.10     OK (THIS NODE)
> pnn:1 192.168.0.11     DISCONNECTED|UNHEALTHY|INACTIVE
> Generation:635915504
> Size:1
> hash:0 lmaster:0
> Recovery mode:NORMAL (0)
> Recovery master:0
>
> ...................
>
> What are the valid arguments to 50.samba?
>
> *************
> As you suggested we restored the original 50.samba script and added:
> CTDB_SERVICE_SMB=smbd
> to /etc/defaults/ctdb
>
> Here is /etc/ctdb/events.d/50.samba:
> #!/bin/sh
> # ctdb event script for Samba
>
> [ -n "$CTDB_BASE" ] || \
>      export CTDB_BASE=$(cd -P $(dirname "$0") ; dirname "$PWD")
>
> . $CTDB_BASE/functions
> .........
> service_start ()
> {
>      # make sure samba is not already started
> echo $CTDB_SERVICE_SMB
> exit 1
The above two lines do not appear on debians version of the startscript. 
Guess they endedup unintentional.
>      service "$CTDB_SERVICE_SMB" stop > /dev/null 2>&1
>      if [ -n "$CTDB_SERVICE_NMB" ] ; then
>          service "$CTDB_SERVICE_NMB" stop > /dev/null 2>&1
>      fi
>      killall -0 -q smbd && {
>          sleep 1
>          # make absolutely sure samba is dead
>          killall -q -9 smbd
>      }
>      killall -0 -q nmbd && {
>          sleep 1
>          # make absolutely sure samba is dead
>          killall -q -9 nmbd
>      }
>
>      # start Samba service. Start it reniced, as under very heavy load
>      # the number of smbd processes will mean that it leaves few cycles
>      # for anything else
>      net serverid wipe
>
>      if [ -n "$CTDB_SERVICE_NMB" ] ; then
>          nice_service "$CTDB_SERVICE_NMB" start || die "Failed to start
> nmbd"
>      fi
>
>      nice_service "$CTDB_SERVICE_SMB" start || die "Failed to start
> samba"
> }
>
> .....
> is_ctdb_managed_service || exit 0
Below you can see startup/shutdown/monitor are valid options for the 
script. Take an look at /etc/ctdb/functions if you want to inspect the 
functions like is_ctdb_managed_service above.
> ###########################
>
> case "$1" in
>       startup)
>          ctdb_service_start
>          ;;
>
>       shutdown)
>          ctdb_service_stop
>          ;;
>
>       monitor)
>          testparm_foreground_update 10
>          ret=$?
>
>          smb_ports="$CTDB_SAMBA_CHECK_PORTS"
>          if [ -z "$smb_ports" ] ; then
>              smb_ports=$(list_samba_ports)
>              [ -n "$smb_ports" ] || die "Failed to set smb ports"
>          fi
>          ctdb_check_tcp_ports $smb_ports || exit $?
>
>          if [ "$CTDB_SAMBA_SKIP_SHARE_CHECK" != "yes" ] ; then
>              list_samba_shares | ctdb_check_directories || exit $?
>          fi
>
>          if [ $ret -ne 0 ] ; then
>              testparm_background_update 10
>          fi
>          ;;
>
>      *)
>          ctdb_standard_event_handler "$@"
>          ;;
> esac
> exit 0
>
Hope that helps.