daemon-util.in 5.27 KB
Newer Older
1 2 3
#!/bin/bash
#

Iustin Pop's avatar
Iustin Pop committed
4
# Copyright (C) 2009, 2011 Google Inc.
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.

set -e

defaults_file=@SYSCONFDIR@/default/ganeti

25 26 27 28 29 30 31 32 33
# This is a list of all daemons and the order in which they're started. The
# order is important as there are dependencies between them. On shutdown,
# they're stopped in reverse order.
DAEMONS=(
  ganeti-noded
  ganeti-masterd
  ganeti-rapi
  )

Iustin Pop's avatar
Iustin Pop committed
34 35 36 37
if [[ "@CUSTOM_ENABLE_CONFD@" == True ]]; then
  DAEMONS+=( ganeti-confd )
fi

38 39 40 41 42 43 44 45 46 47 48 49 50 51
NODED_ARGS=
MASTERD_ARGS=
CONFD_ARGS=
RAPI_ARGS=

# Read defaults file if it exists
if [[ -s $defaults_file ]]; then
  . $defaults_file
fi

_daemon_pidfile() {
  echo "@LOCALSTATEDIR@/run/ganeti/$1.pid"
}

52 53 54 55
_daemon_executable() {
  echo "@PREFIX@/sbin/$1"
}

56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
_daemon_usergroup() {
  case "$1" in
    masterd)
      echo "@GNTMASTERUSER@:@GNTMASTERDGROUP@"
      ;;
    confd)
      echo "@GNTCONFDUSER@:@GNTCONFDGROUP@"
      ;;
    rapi)
      echo "@GNTRAPIUSER@:@GNTRAPIGROUP@"
      ;;
    noded)
      echo "@GNTNODEDUSER@:@GNTDAEMONSGROUP@"
      ;;
    *)
      echo "root:@GNTDAEMONSGROUP@"
      ;;
  esac
}

76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
# Checks whether the local machine is part of a cluster
check_config() {
  local server_pem=@LOCALSTATEDIR@/lib/ganeti/server.pem
  local fname

  for fname in $server_pem; do
    if [[ ! -f $fname ]]; then
      echo "Missing configuration file $fname" >&2
      return 1
    fi
  done

  return 0
}

91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113
# Checks the exit code of a daemon
check_exitcode() {
  if [[ "$#" -lt 1 ]]; then
    echo 'Missing exit code.' >&2
    return 1
  fi

  local rc="$1"; shift

  case "$rc" in
    0) ;;
    11)
      echo "not master"
    ;;
    *)
      echo "exit code $rc"
      return 1
    ;;
  esac

  return 0
}

114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146
# Prints a list of all daemons in the order in which they should be started
list_start_daemons() {
  local name

  for name in "${DAEMONS[@]}"; do
    echo "$name"
  done
}

# Prints a list of all daemons in the order in which they should be stopped
list_stop_daemons() {
  list_start_daemons | tac
}

# Checks whether a daemon name is known
is_daemon_name() {
  if [[ "$#" -lt 1 ]]; then
    echo 'Missing daemon name.' >&2
    return 1
  fi

  local name="$1"; shift

  for i in "${DAEMONS[@]}"; do
    if [[ "$i" == "$name" ]]; then
      return 0
    fi
  done

  echo "Unknown daemon name '$name'" >&2
  return 1
}

147 148 149 150
# Checks whether daemon is running
check() {
  if [[ "$#" -lt 1 ]]; then
    echo 'Missing daemon name.' >&2
151
    return 1
152 153 154 155 156 157 158 159 160 161 162 163
  fi

  local name="$1"; shift

  start-stop-daemon --stop --signal 0 --quiet \
    --pidfile $(_daemon_pidfile $name)
}

# Starts a daemon
start() {
  if [[ "$#" -lt 1 ]]; then
    echo 'Missing daemon name.' >&2
164
    return 1
165 166 167 168
  fi

  local name="$1"; shift

Iustin Pop's avatar
Iustin Pop committed
169 170 171 172 173 174
  if [[ "$name" == ganeti-confd &&
        "@CUSTOM_ENABLE_CONFD@" == False ]]; then
    echo 'ganeti-confd disabled at build time' >&2
    return 1
  fi

175
  # Convert daemon name to uppercase after removing "ganeti-" prefix
176 177
  local plain_name=${name#ganeti-}
  local ucname=$(tr a-z A-Z <<<$plain_name)
178 179

  # Read $<daemon>_ARGS and $EXTRA_<daemon>_ARGS
180
  eval local args="\"\$${ucname}_ARGS \$EXTRA_${ucname}_ARGS\""
181

182 183
  @PKGLIBDIR@/ensure-dirs

184 185
  start-stop-daemon --start --quiet --oknodo \
    --pidfile $(_daemon_pidfile $name) \
186
    --startas $(_daemon_executable $name) \
187
    --chuid $(_daemon_usergroup $plain_name) \
188 189 190 191 192 193 194
    -- $args "$@"
}

# Stops a daemon
stop() {
  if [[ "$#" -lt 1 ]]; then
    echo 'Missing daemon name.' >&2
195
    return 1
196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224
  fi

  local name="$1"; shift

  start-stop-daemon --stop --quiet --oknodo --retry 30 \
    --pidfile $(_daemon_pidfile $name)
}

# Starts a daemon if it's not yet running
check_and_start() {
  local name="$1"

  if ! check $name; then
    start $name
  fi
}

# Starts the master role
start_master() {
  start ganeti-masterd
  start ganeti-rapi
}

# Stops the master role
stop_master() {
  stop ganeti-rapi
  stop ganeti-masterd
}

225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248
# Start all daemons
start_all() {
  for i in $(list_start_daemons); do
    local rc=0

    # Try to start daemon
    start $i || rc=$?

    if ! errmsg=$(check_exitcode $rc); then
      echo "$errmsg" >&2
      return 1
    fi
  done

  return 0
}

# Stop all daemons
stop_all() {
  for i in $(list_stop_daemons); do
    stop $i
  done
}

249 250 251 252 253
# Reloads the SSH keys
reload_ssh_keys() {
  @RPL_SSH_INITD_SCRIPT@ restart
}

254 255 256 257 258 259 260
if [[ "$#" -lt 1 ]]; then
  echo "Usage: $0 <action>" >&2
  exit 1
fi

orig_action=$1; shift

261 262 263 264 265
if [[ "$orig_action" == *_* ]]; then
  echo "Command must not contain underscores" >&2
  exit 1
fi

266 267 268 269 270 271 272 273 274 275 276
# Replace all dashes (-) with underlines (_)
action=${orig_action//-/_}

# Is it a known function?
if ! declare -F "$action" >/dev/null 2>&1; then
  echo "Unknown command: $orig_action" >&2
  exit 1
fi

# Call handler function
$action "$@"