收到类型为'djcelery_email_send'的未注册任务

Question

我无法在守护进程模式下运行django-celery，它说Received unregistered task of type 'djcelery_email_send'，而它在python manage.py celery worker时有效，请帮忙。

我在Ubuntu服务器14.04上运行芹菜3.1，django-celery，django-celery-email。我的django设置在proj / settings / production.py。

django-celery的守护进程模式是init脚本init.d. /etc/init.d/celeryd是从https://raw.githubusercontent.com/celery/celery/3.1/extra/generic-init.d/celeryd下载的，如下所示：

#!/bin/sh -e
# ============================================
#  celeryd - Starts the Celery worker daemon.
# ============================================
#
# :Usage: /etc/init.d/celeryd {start|stop|force-reload|restart|try-restart|status}
# :Configuration file: /etc/default/celeryd
#
# See http://docs.celeryproject.org/en/latest/tutorials/daemonizing.html#generic-init-scripts


### BEGIN INIT INFO
# Provides:          celeryd
# Required-Start:    $network $local_fs $remote_fs
# Required-Stop:     $network $local_fs $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: celery task worker daemon
### END INIT INFO
#
#
# To implement separate init scripts, copy this script and give it a different
# name:
# I.e., if my new application, "little-worker" needs an init, I
# should just use:
#
#   cp /etc/init.d/celeryd /etc/init.d/little-worker
#
# You can then configure this by manipulating /etc/default/little-worker.
#
VERSION=10.1
echo "celery init v${VERSION}."
if [ $(id -u) -ne 0 ]; then
    echo "Error: This program can only be used by the root user."
    echo "       Unprivileged users must use the 'celery multi' utility, "
    echo "       or 'celery worker --detach'."
    exit 1
fi

origin_is_runlevel_dir () {
    set +e
    dirname $0 | grep -q "/etc/rc.\.d"
    echo $?
}

# Can be a runlevel symlink (e.g. S02celeryd)
if [ $(origin_is_runlevel_dir) -eq 0 ]; then
    SCRIPT_FILE=$(readlink "$0")
else
    SCRIPT_FILE="$0"
fi
SCRIPT_NAME="$(basename "$SCRIPT_FILE")"

DEFAULT_USER="celery"
DEFAULT_PID_FILE="/var/run/celery/%n.pid"
DEFAULT_LOG_FILE="/var/log/celery/%n.log"
DEFAULT_LOG_LEVEL="INFO"
DEFAULT_NODES="celery"
DEFAULT_CELERYD="-m celery worker --detach"

CELERY_DEFAULTS=${CELERY_DEFAULTS:-"/etc/default/${SCRIPT_NAME}"}

# Make sure executable configuration script is owned by root
_config_sanity() {
    local path="$1"
    local owner=$(ls -ld "$path" | awk '{print $3}')
    local iwgrp=$(ls -ld "$path" | cut -b 6)
    local iwoth=$(ls -ld "$path" | cut -b 9)

    if [ "$(id -u $owner)" != "0" ]; then
        echo "Error: Config script '$path' must be owned by root!"
        echo
        echo "Resolution:"
        echo "Review the file carefully and make sure it has not been "
        echo "modified with mailicious intent.  When sure the "
        echo "script is safe to execute with superuser privileges "
        echo "you can change ownership of the script:"
        echo "    $ sudo chown root '$path'"
        exit 1
    fi

    if [ "$iwoth" != "-" ]; then  # S_IWOTH
        echo "Error: Config script '$path' cannot be writable by others!"
        echo
        echo "Resolution:"
        echo "Review the file carefully and make sure it has not been "
        echo "modified with malicious intent.  When sure the "
        echo "script is safe to execute with superuser privileges "
        echo "you can change the scripts permissions:"
        echo "    $ sudo chmod 640 '$path'"
        exit 1
    fi
    if [ "$iwgrp" != "-" ]; then  # S_IWGRP
        echo "Error: Config script '$path' cannot be writable by group!"
        echo
        echo "Resolution:"
        echo "Review the file carefully and make sure it has not been "
        echo "modified with malicious intent.  When sure the "
        echo "script is safe to execute with superuser privileges "
        echo "you can change the scripts permissions:"
        echo "    $ sudo chmod 640 '$path'"
        exit 1
    fi
}

if [ -f "$CELERY_DEFAULTS" ]; then
    _config_sanity "$CELERY_DEFAULTS"
    echo "Using config script: $CELERY_DEFAULTS"
    . "$CELERY_DEFAULTS"
fi

# Sets --app argument for CELERY_BIN
CELERY_APP_ARG=""
if [ ! -z "$CELERY_APP" ]; then
    CELERY_APP_ARG="--app=$CELERY_APP"
fi

CELERYD_USER=${CELERYD_USER:-$DEFAULT_USER}

# Set CELERY_CREATE_DIRS to always create log/pid dirs.
CELERY_CREATE_DIRS=${CELERY_CREATE_DIRS:-0}
CELERY_CREATE_RUNDIR=$CELERY_CREATE_DIRS
CELERY_CREATE_LOGDIR=$CELERY_CREATE_DIRS
if [ -z "$CELERYD_PID_FILE" ]; then
    CELERYD_PID_FILE="$DEFAULT_PID_FILE"
    CELERY_CREATE_RUNDIR=1
fi
if [ -z "$CELERYD_LOG_FILE" ]; then
    CELERYD_LOG_FILE="$DEFAULT_LOG_FILE"
    CELERY_CREATE_LOGDIR=1
fi

CELERYD_LOG_LEVEL=${CELERYD_LOG_LEVEL:-${CELERYD_LOGLEVEL:-$DEFAULT_LOG_LEVEL}}
CELERY_BIN=${CELERY_BIN:-"celery"}
CELERYD_MULTI=${CELERYD_MULTI:-"$CELERY_BIN multi"}
CELERYD_NODES=${CELERYD_NODES:-$DEFAULT_NODES}

export CELERY_LOADER

if [ -n "$2" ]; then
    CELERYD_OPTS="$CELERYD_OPTS $2"
fi

CELERYD_LOG_DIR=`dirname $CELERYD_LOG_FILE`
CELERYD_PID_DIR=`dirname $CELERYD_PID_FILE`

# Extra start-stop-daemon options, like user/group.
if [ -n "$CELERYD_CHDIR" ]; then
    DAEMON_OPTS="$DAEMON_OPTS --workdir=$CELERYD_CHDIR"
fi


check_dev_null() {
    if [ ! -c /dev/null ]; then
        echo "/dev/null is not a character device!"
        exit 75  # EX_TEMPFAIL
    fi
}


maybe_die() {
    if [ $? -ne 0 ]; then
        echo "Exiting: $* (errno $?)"
        exit 77  # EX_NOPERM
    fi
}

create_default_dir() {
    if [ ! -d "$1" ]; then
        echo "- Creating default directory: '$1'"
        mkdir -p "$1"
        maybe_die "Couldn't create directory $1"
        echo "- Changing permissions of '$1' to 02755"
        chmod 02755 "$1"
        maybe_die "Couldn't change permissions for $1"
        if [ -n "$CELERYD_USER" ]; then
            echo "- Changing owner of '$1' to '$CELERYD_USER'"
            chown "$CELERYD_USER" "$1"
            maybe_die "Couldn't change owner of $1"
        fi
        if [ -n "$CELERYD_GROUP" ]; then
            echo "- Changing group of '$1' to '$CELERYD_GROUP'"
            chgrp "$CELERYD_GROUP" "$1"
            maybe_die "Couldn't change group of $1"
        fi
    fi
}


check_paths() {
    if [ $CELERY_CREATE_LOGDIR -eq 1 ]; then
        create_default_dir "$CELERYD_LOG_DIR"
    fi
    if [ $CELERY_CREATE_RUNDIR -eq 1 ]; then
        create_default_dir "$CELERYD_PID_DIR"
    fi
}

create_paths() {
    create_default_dir "$CELERYD_LOG_DIR"
    create_default_dir "$CELERYD_PID_DIR"
}

export PATH="${PATH:+$PATH:}/usr/sbin:/sbin"


_get_pidfiles () {
    # note: multi < 3.1.14 output to stderr, not stdout, hence the redirect.
    ${CELERYD_MULTI} expand "${CELERYD_PID_FILE}" ${CELERYD_NODES} 2>&1
}


_get_pids() {
    found_pids=0
    my_exitcode=0

    for pidfile in $(_get_pidfiles); do
        local pid=`cat "$pidfile"`
        local cleaned_pid=`echo "$pid" | sed -e 's/[^0-9]//g'`
        if [ -z "$pid" ] || [ "$cleaned_pid" != "$pid" ]; then
            echo "bad pid file ($pidfile)"
            one_failed=true
            my_exitcode=1
        else
            found_pids=1
            echo "$pid"
        fi

    if [ $found_pids -eq 0 ]; then
        echo "${SCRIPT_NAME}: All nodes down"
        exit $my_exitcode
    fi
    done
}


_chuid () {
    su "$CELERYD_USER" -c "$CELERYD_MULTI $*"
}


start_workers () {
    if [ ! -z "$CELERYD_ULIMIT" ]; then
        ulimit $CELERYD_ULIMIT
    fi
    _chuid $* start $CELERYD_NODES $DAEMON_OPTS     \
                 --pidfile="$CELERYD_PID_FILE"      \
                 --logfile="$CELERYD_LOG_FILE"      \
                 --loglevel="$CELERYD_LOG_LEVEL"    \
                 $CELERY_APP_ARG                    \
                 $CELERYD_OPTS
}


dryrun () {
    (C_FAKEFORK=1 start_workers --verbose)
}


stop_workers () {
    _chuid stopwait $CELERYD_NODES --pidfile="$CELERYD_PID_FILE"
}


restart_workers () {
    _chuid restart $CELERYD_NODES $DAEMON_OPTS      \
                   --pidfile="$CELERYD_PID_FILE"    \
                   --logfile="$CELERYD_LOG_FILE"    \
                   --loglevel="$CELERYD_LOG_LEVEL"  \
                   $CELERY_APP_ARG                  \
                   $CELERYD_OPTS
}


kill_workers() {
    _chuid kill $CELERYD_NODES --pidfile="$CELERYD_PID_FILE"
}


restart_workers_graceful () {
    echo "WARNING: Use with caution in production"
    echo "The workers will attempt to restart, but they may not be able to."
    local worker_pids=
    worker_pids=`_get_pids`
    [ "$one_failed" ] && exit 1

    for worker_pid in $worker_pids; do
        local failed=
        kill -HUP $worker_pid 2> /dev/null || failed=true
        if [ "$failed" ]; then
            echo "${SCRIPT_NAME} worker (pid $worker_pid) could not be restarted"
            one_failed=true
        else
            echo "${SCRIPT_NAME} worker (pid $worker_pid) received SIGHUP"
        fi
    done

    [ "$one_failed" ] && exit 1 || exit 0
}


check_status () {
    my_exitcode=0
    found_pids=0

    local one_failed=
    for pidfile in $(_get_pidfiles); do
        if [ ! -r $pidfile ]; then
            echo "${SCRIPT_NAME} down: no pidfiles found"
            one_failed=true
            break
        fi

        local node=`basename "$pidfile" .pid`
        local pid=`cat "$pidfile"`
        local cleaned_pid=`echo "$pid" | sed -e 's/[^0-9]//g'`
        if [ -z "$pid" ] || [ "$cleaned_pid" != "$pid" ]; then
            echo "bad pid file ($pidfile)"
            one_failed=true
        else
            local failed=
            kill -0 $pid 2> /dev/null || failed=true
            if [ "$failed" ]; then
                echo "${SCRIPT_NAME} (node $node) (pid $pid) is down, but pidfile exists!"
                one_failed=true
            else
                echo "${SCRIPT_NAME} (node $node) (pid $pid) is up..."
            fi
        fi
    done

    [ "$one_failed" ] && exit 1 || exit 0
}


case "$1" in
    start)
        check_dev_null
        check_paths
        start_workers
    ;;

    stop)
        check_dev_null
        check_paths
        stop_workers
    ;;

    reload|force-reload)
        echo "Use restart"
    ;;

    status)
        check_status
    ;;

    restart)
        check_dev_null
        check_paths
        restart_workers
    ;;

    graceful)
        check_dev_null
        restart_workers_graceful
    ;;

    kill)
        check_dev_null
        kill_workers
    ;;

    dryrun)
        check_dev_null
        dryrun
    ;;

    try-restart)
        check_dev_null
        check_paths
        restart_workers
    ;;

    create-paths)
        check_dev_null
        create_paths
    ;;

    check-paths)
        check_dev_null
        check_paths
    ;;

    *)
        echo "Usage: /etc/init.d/${SCRIPT_NAME} {start|stop|restart|graceful|kill|dryrun|create-paths}"
        exit 64  # EX_USAGE
    ;;
esac

exit 0

/ etc / default / celeryd如下：

CELERYD_NODES="proj"
#   but you can also start multiple and configure settings
#   for each in CELERYD_OPTS (see `celery multi --help` for examples):
#CELERYD_NODES="worker1 worker2 worker3"
#   alternatively, you can specify the number of nodes to start:
#CELERYD_NODES=10
export DJANGO_SETTINGS_MODULE='proj.settings.production'
export PYTHONPATH='$PYTHONPATH:/home/ubuntu/proj'

# Absolute or relative path to the 'celery' command:
#CELERY_BIN="/usr/local/bin/celery"
CELERY_BIN="/home/ubuntu/virtualenv/proj/bin/celery"

# App instance to use
# comment out this line if you don't use an app
#CELERY_APP="proj"
# or fully qualified:
#CELERY_APP="proj.tasks:app"

# Where to chdir at start.
CELERYD_CHDIR="/home/ubuntu/proj/"

# Extra command-line arguments to the worker
CELERYD_OPTS="--time-limit=300 --concurrency=8"

# %N will be replaced with the first part of the nodename.
CELERYD_LOG_FILE="/var/log/celery/%N.log"
CELERYD_PID_FILE="/var/run/celery/%N.pid"

# Workers should run as an unprivileged user.
#   You need to create this user manually (or you can choose
#   a user/group combination that already exists, e.g. nobody).
CELERYD_USER="ubuntu"
CELERYD_GROUP="ubuntu"

# If enabled pid and log directories will be created if missing,
# and owned by the userid/group configured.
CELERY_CREATE_DIRS=1

/var/log/celery/proj.log的错误日志片段：

If you depend on pickle then you should set a setting to disable this
warning and to be sure that everything will continue working
when you upgrade to Celery 3.2::

    CELERY_ACCEPT_CONTENT = ['pickle', 'json', 'msgpack', 'yaml']

You must only enable the serializers that you will actually use.


  warnings.warn(CDeprecationWarning(W_PICKLE_DEPRECATED))
[2016-06-07 07:22:10,699: INFO/MainProcess] Connected to amqp://guest:**@127.0.0.1:5672//
[2016-06-07 07:22:10,708: INFO/MainProcess] mingle: searching for neighbors
[2016-06-07 07:22:11,715: INFO/MainProcess] mingle: all alone
[2016-06-07 07:22:11,722: WARNING/MainProcess] proj@ip-172-31-20-158 ready.
[2016-06-07 07:22:44,464: ERROR/MainProcess] Received unregistered task of type 'djcelery_email_send'.
The message has been ignored and discarded.

Did you remember to import the module containing this task?
Or maybe you are using relative imports?
Please see  for more information.

The full contents of the message body was:
{'errbacks': None, 'callbacks': None, 'retries': 0, 'taskset': None, 'expires': None, 'timelimit': (None, None), 'args': ([{'cc': [], 'to': ['cjh@yahoo.com', '649858321@qq.com', 'xu_jordan@163.com', '123456@qq.com'], 'alternatives': [], 'bcc': [], 'attachments': [], 'reply_to': [], 'headers': {}, 'subject': 'A show: i is on the way', 'from_email': 'no-reply@angelscity.co', 'body': 'i'}], {}), 'eta': None, 'task': 'djcelery_email_send', 'chord': None, 'kwargs': {}, 'id': '9b108b79-4ac9-4039-bca0-486c0241930f', 'utc': True} (587b)
Traceback (most recent call last):
  File "/home/ubuntu/virtualenv/proj/lib/python3.4/site-packages/celery/worker/consumer.py", line 456, in on_task_received
    strategies[name](message, body,
KeyError: 'djcelery_email_send'

Answer 1

我终于转向了supervisord，它确实有效。

以下是可能遇到同样问题的人的详细信息。

• 安装supervisord：sudo apt-get install supervisord。还有其他一些选项可以安装它，比如easy_install，但要确保你的easy_install适用于python 2.x. supervisord只支持python 2.4+而不是python 3。

• 将ceelryd.conf添加到/etc/supervisor/conf.d，如下所示：

  [program:celery]
  ;command=pythonpath manage.pypath celery worker --settings=proj.settings
  command=/home/username/virtualenvs/projenv/bin/python /home/username/proj/manage.py celery worker --settings=proj.settings
  
  environment=PYTHONPATH='/home/username/virtualenvs/projenv'
  
  directory=/home/username/virtualenvs/projenv
  user=username
  numprocs=1
  stdout_logfile=/var/log/celeryd.log
  stderr_logfile=/var/log/celeryd.log
  autostart=true
  autorestart=true
  startsecs=10
  
  ; Need to wait for currently executing tasks to finish at shutdown.
  ; Increase this if you have very long running tasks.
  stopwaitsecs = 600
  
  ; if rabbitmq is supervised, set its priority higher
  ; so it starts first
  priority=998
  

• 重读并更新主管：sudo supervisorctl reread && sudo supervisorctl update

• 重新启动芹菜：sudo supervisorctl restart celery