ctdb/config/ctdbd_wrapper

   1 #!/bin/sh
   2
   3 # ctdbd wrapper - start or stop CTDB
   4
   5 usage ()
   6 {
   7     echo "usage: ctdbd_wrapper { start | stop }"
   8     exit 1
   9 }
  10
  11 [ $# -eq 1 ] || usage
  12
  13 action="$1"
  14
  15 ############################################################
  16
  17 if [ -z "$CTDB_BASE" ] ; then
  18     export CTDB_BASE="/usr/local/etc/ctdb"
  19 fi
  20
  21 . "${CTDB_BASE}/functions"
  22
  23 loadconfig
  24
  25 ctdbd="${CTDBD:-/usr/local/sbin/ctdbd}"
  26
  27 ############################################################
  28
  29 # Only the nested function references its arguments
  30 # shellcheck disable=SC2120
  31 build_ctdb_options ()
  32 {
  33         maybe_set ()
  34         {
  35                 _section="$1"
  36                 _key="$2"
  37                 _val="$3"
  38                 _check="$4"
  39
  40                 # If the given variable isn't set then do nothing
  41                 [ -n "$_val" ] || return
  42                 # If a value is required for the variable and it doesn't
  43                 # match, then do nothing
  44                 if [ -n "$_check" -a "$_check" != "$_val" ] ; then
  45                         return
  46                 fi
  47
  48                 # Configuration file handling needs true/false, not yes/no
  49                 case "$_val" in
  50                 yes) _val="true"  ;;
  51                 no)  _val="false" ;;
  52                 esac
  53
  54                 if grep -q "^\\[${_section}\\]\\$" "$_conf_file" ; then
  55                         # Section already exists...
  56                         # Must escape leading TAB or sed eats it
  57                         sed -i -e "/\\[${_section}\\]/a\
  58 \\      ${_key} = ${_val}
  59 " "${_conf_file}"
  60                 else
  61                         # Section does not exist and needs to be created...
  62                         # Note literal TAB for indentation in here document
  63                         cat >>"${_conf_file}" <<EOF
  64
  65 [${_section}]
  66         ${_key} = ${_val}
  67 EOF
  68                 fi
  69         }
  70
  71         # Only write a new style configuration file if it doesn't already
  72         # exist
  73         _conf_file="${CTDB_BASE}/ctdb.conf"
  74         if [ -f "$_conf_file" ] ; then
  75                 return
  76         fi
  77
  78         touch "$_conf_file"
  79
  80         # Create configuration file from old style options
  81         maybe_set "cluster" "recovery lock"      "$CTDB_RECOVERY_LOCK"
  82         maybe_set "logging" "location"           "$CTDB_LOGGING"
  83         maybe_set "cluster" "node address"       "$CTDB_NODE_ADDRESS"
  84         maybe_set "database" "volatile database directory" \
  85                   "$CTDB_DBDIR"
  86         maybe_set "database" "persistent database directory" \
  87                   "$CTDB_DBDIR_PERSISTENT"
  88         maybe_set "database" "state database directory" \
  89                   "$CTDB_DBDIR_STATE"
  90         maybe_set "cluster" "transport"          "$CTDB_TRANSPORT"
  91         maybe_set "logging" "log level"          "$CTDB_DEBUGLEVEL"
  92         maybe_set "legacy" "start as disabled"   "$CTDB_START_AS_DISABLED" "yes"
  93         maybe_set "legacy" "start as stopped"   "$CTDB_START_AS_STOPPED" "yes"
  94         maybe_set "legacy" "recmaster capability" \
  95                   "$CTDB_CAPABILITY_RECMASTER" "no"
  96         maybe_set "legacy" "lmaster capability" \
  97                   "$CTDB_CAPABILITY_LMASTER"   "no"
  98         maybe_set "legacy" "no realtime"         "$CTDB_NOSETSCHED" "yes"
  99         maybe_set "legacy" "script log level"    "$CTDB_SCRIPT_LOG_LEVEL"
 100         maybe_set "database" "volatile uses tmpfs" \
 101                   "$CTDB_DBDIR_USES_TMPFS" "yes"
 102 }
 103
 104 export_debug_variables ()
 105 {
 106     [ -n "$CTDB_DEBUG_HUNG_SCRIPT" ] && export CTDB_DEBUG_HUNG_SCRIPT
 107     [ -n "$CTDB_DEBUG_LOCKS" ] && export CTDB_DEBUG_LOCKS
 108 }
 109
 110 ############################################################
 111
 112 start()
 113 {
 114     # build_ctdb_options() takes no arguments
 115     # shellcheck disable=SC2119
 116     build_ctdb_options
 117
 118     export_debug_variables
 119
 120     eval "$ctdbd" || return 1
 121
 122     # Wait until ctdbd has started and is ready to respond to clients.
 123     _timeout="${CTDB_STARTUP_TIMEOUT:-10}"
 124     _count=0
 125     while [ "$_count" -lt "$_timeout" ] ; do
 126         if $CTDB runstate first_recovery startup running >/dev/null 2>&1 ; then
 127             return 0
 128         fi
 129
 130         _count=$((_count + 1))
 131         sleep 1
 132     done
 133
 134     echo "Timed out waiting for initialisation - check logs"
 135     # Attempt a shutdown just in case things are still running
 136     $CTDB shutdown >/dev/null 2>&1
 137     drop_all_public_ips >/dev/null 2>&1
 138     return 1
 139 }
 140
 141 stop()
 142 {
 143         $CTDB shutdown
 144
 145         # The above command is important and needs to stand out, so
 146         # post-check exit status
 147         # shellcheck disable=SC2181
 148         if [ $? -ne 0 ] ; then
 149                 echo "Error while shutting down CTDB"
 150                 drop_all_public_ips >/dev/null 2>&1
 151                 return 1
 152         fi
 153
 154         return 0
 155 }
 156
 157 ############################################################
 158
 159 # Allow notifications for start/stop.
 160 if [ -x "$CTDB_BASE/rc.ctdb" ] ; then
 161     "$CTDB_BASE/rc.ctdb" "$action"
 162 fi
 163
 164 case "$action" in
 165     start) start ;;
 166     stop)  stop  ;;
 167     *)
 168         echo "usage: $0 {start|stop}"
 169         exit 1
 170 esac