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Django celeryd和celerybeat pid文件未创建，工人未启动，但输出显示OK

django

Django celeryd和celerybeat pid文件未创建，工人未启动，但输出显示OK,django,django-celery,daemons,Django,Django Celery,Daemons,我将celeryd和celerybeat设置为守护进程，它们一直工作到不久。但从一段时间以来，它不会启动worker，也不会创建pid文件 这是我的/etc/default/celeryd： # Name of nodes to start CELERYD_NODES="w1 w2 w3 w4 w5 w6 w7 w8" # Extra arguments to celeryd CELERYD_OPTS="--time-limit=300 --concurrency=8" # Where to

我将celeryd和celerybeat设置为守护进程，它们一直工作到不久。但从一段时间以来，它不会启动worker，也不会创建pid文件

这是我的
/etc/default/celeryd
：

# Name of nodes to start
CELERYD_NODES="w1 w2 w3 w4 w5 w6 w7 w8"

# Extra arguments to celeryd
CELERYD_OPTS="--time-limit=300 --concurrency=8"

# Where to chdir at start.
CELERYD_CHDIR="/srv/www/web-system/myproject"

# %n will be replaced with the nodename.
#CELERYD_LOG_FILE="/var/log/celery/%n.log"
#CELERYD_PID_FILE="/var/run/celery/%n.pid"
CELERYD_LOG_FILE="/srv/www/web-system/logs/celery/%n.log"
CELERYD_PID_FILE="/srv/www/web-system/pids/celery/%n.pid"

# Log level to use for celeryd. Default is INFO.
CELERYD_LOG_LEVEL="INFO"

# How to call "manage.py celeryd_multi"
CELERYD_MULTI="$CELERYD_CHDIR/manage.py celeryd_multi"

# How to call "manage.py celeryctl"
CELERYCTL="$CELERYD_CHDIR/manage.py celeryctl"

# Workers should run as an unprivileged user.
#CELERYD_USER="celery"
#CELERYD_GROUP="celery"
CELERYD_USER="myuser"
CELERYD_GROUP="myuser"

# Name of the projects settings module.
export DJANGO_SETTINGS_MODULE="myproject.settings"
下面是
init.d
脚本：

#!/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

# some commands work asyncronously, so we'll wait this many seconds
SLEEP_SECONDS=5

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.bin.celeryd_detach"

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

test -f "$CELERY_DEFAULTS" && . "$CELERY_DEFAULTS"

# 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:-$DEFAULT_LOG_LEVEL}}
CELERYD_MULTI=${CELERYD_MULTI:-"celeryd-multi"}
CELERYD=${CELERYD:-$DEFAULT_CELERYD}
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 "$CELERYD_USER" ]; then
    DAEMON_OPTS="$DAEMON_OPTS --uid=$CELERYD_USER"
fi
if [ -n "$CELERYD_GROUP" ]; then
    DAEMON_OPTS="$DAEMON_OPTS --gid=$CELERYD_GROUP"
fi

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_pid_files() {
    [ ! -d "$CELERYD_PID_DIR" ] && return
    echo `ls -1 "$CELERYD_PID_DIR"/*.pid 2> /dev/null`
}

stop_workers () {
    $CELERYD_MULTI stopwait $CELERYD_NODES --pidfile="$CELERYD_PID_FILE"
    sleep $SLEEP_SECONDS
}


start_workers () {
    $CELERYD_MULTI start $CELERYD_NODES $DAEMON_OPTS        \
                         --pidfile="$CELERYD_PID_FILE"      \
                         --logfile="$CELERYD_LOG_FILE"      \
                         --loglevel="$CELERYD_LOG_LEVEL"    \
                         --cmd="$CELERYD"                   \
                         $CELERYD_OPTS
    sleep $SLEEP_SECONDS
}


restart_workers () {
    $CELERYD_MULTI restart $CELERYD_NODES $DAEMON_OPTS      \
                           --pidfile="$CELERYD_PID_FILE"    \
                           --logfile="$CELERYD_LOG_FILE"    \
                           --loglevel="$CELERYD_LOG_LEVEL"  \
                           --cmd="$CELERYD"                 \
                           $CELERYD_OPTS
    sleep $SLEEP_SECONDS
}

check_status () {
    local pid_files=
    pid_files=`_get_pid_files`
    [ -z "$pid_files" ] && echo "celeryd not running (no pidfile)" && exit 1

    local one_failed=
    for pid_file in $pid_files; do
        local node=`basename "$pid_file" .pid`
        local pid=`cat "$pid_file"`
        local cleaned_pid=`echo "$pid" | sed -e 's/[^0-9]//g'`
        if [ -z "$pid" ] || [ "$cleaned_pid" != "$pid" ]; then
            echo "bad pid file ($pid_file)"
        else
            local failed=
            kill -0 $pid 2> /dev/null || failed=true
            if [ "$failed" ]; then
                echo "celeryd (node $node) (pid $pid) is stopped, but pid file exists!"
                one_failed=true
            else
                echo "celeryd (node $node) (pid $pid) is running..."
            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
    ;;
    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/celeryd {start|stop|restart|kill|create-paths}"
        exit 64  # EX_USAGE
    ;;
esac

exit 0

#!/usr/bin/python
# -*- coding: utf-8 -*-
import os
import sys

path = '/srv/www/web-system/'
if path not in sys.path:
    sys.path.append(path)
    sys.path.append(path + 'myproject/')

os.environ['DJANGO_SETTINGS_MODULE'] = 'myproject.settings'

import djcelery
djcelery.setup_loader()

import django.core.handlers.wsgi
application = django.core.handlers.wsgi.WSGIHandler()
此外，我还使用以下命令执行了init脚本：
sh-x/etc/init.d/celeryd start
，如中所示，这是输出：

# sh -x /etc/init.d/celeryd start
+ SLEEP_SECONDS=5
+ 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.bin.celeryd_detach
+ CELERY_DEFAULTS=/etc/default/celeryd
+ test -f /etc/default/celeryd
+ . /etc/default/celeryd
+ CELERYD_NODES=w1 w2 w3 w4 w5 w6 w7 w8
+ CELERYD_OPTS=--time-limit=300 --concurrency=8
+ CELERYD_CHDIR=/srv/www/web-system/myproject
+ CELERYD_LOG_FILE=/srv/www/web-system/logs/celery/%n.log
+ CELERYD_PID_FILE=/srv/www/web-system/pids/celery/%n.pid
+ CELERYD_LOG_LEVEL=INFO
+ CELERYD_MULTI=/srv/www/web-system/myproject/manage.py celeryd_multi
+ CELERYCTL=/srv/www/web-system/myproject/manage.py celeryctl
+ CELERYD_USER=myproject
+ CELERYD_GROUP=myproject
+ export DJANGO_SETTINGS_MODULE=myproject.settings
+ CELERY_CREATE_DIRS=0
+ CELERY_CREATE_RUNDIR=0
+ CELERY_CREATE_LOGDIR=0
+ [ -z /srv/www/sistema-web/pids/celery/%n.pid ]
+ [ -z /srv/www/sistema-web/logs/celery/%n.log ]
+ CELERYD_LOG_LEVEL=INFO
+ CELERYD_MULTI=/srv/www/web-system/myproject/manage.py celeryd_multi
+ CELERYD=-m celery.bin.celeryd_detach
+ CELERYD_NODES=w1 w2 w3 w4 w5 w6 w7 w8
+ export CELERY_LOADER
+ [ -n  ]
+ dirname /srv/www/web-system/logs/celery/%n.log
+ CELERYD_LOG_DIR=/srv/www/web-system/logs/celery
+ dirname /srv/www/web-system/pids/celery/%n.pid
+ CELERYD_PID_DIR=/srv/www/web-system/pids/celery
+ [ -n yougrups ]
+ DAEMON_OPTS= --uid=myprojects
+ [ -n yougrups ]
+ DAEMON_OPTS= --uid=myprojects --gid=myprojects
+ [ -n /srv/www/web-system/myprojects ]
+ DAEMON_OPTS= --uid=myproject --gid=myproject --workdir=/srv/www/web-system/myproject
+ export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/sbin:/sbin
+ check_dev_null
+ [ ! -c /dev/null ]
+ check_paths
+ [ 0 -eq 1 ]
+ [ 0 -eq 1 ]
+ start_workers
+ /srv/www/web-system/myproject/manage.py celeryd_multi start w1 w2 w3 w4 w5 w6 w7 w8 --uid=myproject --gid=myproject --workdir=/srv/www/web-system/myproject --pidfile=/srv/www/web-system/pids/celery/%n.pid --logfile=/srv/www/web-system/logs/celery/%n.log --loglevel=INFO --cmd=-m celery.bin.celeryd_detach --time-limit=300 --concurrency=8
celeryd-multi v3.0.21 (Chiastic Slide)
> Starting nodes...
    > w1.myproject: OK
    > w2.myproject: OK
    > w3.myproject: OK
    > w4.myproject: OK
    > w5.myproject: OK
    > w6.myproject: OK
    > w7.myproject: OK
    > w8.myproject: OK
+ sleep 5
+ exit 0
然后，当我检查pids dir时，它是空的，
ps aux
表示没有关于它的活动进程。日志中也没有任何内容。我没有使用virtualenv。它只是停止了工作。django芹菜的版本是
3.0.21
。这是我的
wsgi
脚本：

#!/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

# some commands work asyncronously, so we'll wait this many seconds
SLEEP_SECONDS=5

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.bin.celeryd_detach"

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

test -f "$CELERY_DEFAULTS" && . "$CELERY_DEFAULTS"

# 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:-$DEFAULT_LOG_LEVEL}}
CELERYD_MULTI=${CELERYD_MULTI:-"celeryd-multi"}
CELERYD=${CELERYD:-$DEFAULT_CELERYD}
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 "$CELERYD_USER" ]; then
    DAEMON_OPTS="$DAEMON_OPTS --uid=$CELERYD_USER"
fi
if [ -n "$CELERYD_GROUP" ]; then
    DAEMON_OPTS="$DAEMON_OPTS --gid=$CELERYD_GROUP"
fi

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_pid_files() {
    [ ! -d "$CELERYD_PID_DIR" ] && return
    echo `ls -1 "$CELERYD_PID_DIR"/*.pid 2> /dev/null`
}

stop_workers () {
    $CELERYD_MULTI stopwait $CELERYD_NODES --pidfile="$CELERYD_PID_FILE"
    sleep $SLEEP_SECONDS
}


start_workers () {
    $CELERYD_MULTI start $CELERYD_NODES $DAEMON_OPTS        \
                         --pidfile="$CELERYD_PID_FILE"      \
                         --logfile="$CELERYD_LOG_FILE"      \
                         --loglevel="$CELERYD_LOG_LEVEL"    \
                         --cmd="$CELERYD"                   \
                         $CELERYD_OPTS
    sleep $SLEEP_SECONDS
}


restart_workers () {
    $CELERYD_MULTI restart $CELERYD_NODES $DAEMON_OPTS      \
                           --pidfile="$CELERYD_PID_FILE"    \
                           --logfile="$CELERYD_LOG_FILE"    \
                           --loglevel="$CELERYD_LOG_LEVEL"  \
                           --cmd="$CELERYD"                 \
                           $CELERYD_OPTS
    sleep $SLEEP_SECONDS
}

check_status () {
    local pid_files=
    pid_files=`_get_pid_files`
    [ -z "$pid_files" ] && echo "celeryd not running (no pidfile)" && exit 1

    local one_failed=
    for pid_file in $pid_files; do
        local node=`basename "$pid_file" .pid`
        local pid=`cat "$pid_file"`
        local cleaned_pid=`echo "$pid" | sed -e 's/[^0-9]//g'`
        if [ -z "$pid" ] || [ "$cleaned_pid" != "$pid" ]; then
            echo "bad pid file ($pid_file)"
        else
            local failed=
            kill -0 $pid 2> /dev/null || failed=true
            if [ "$failed" ]; then
                echo "celeryd (node $node) (pid $pid) is stopped, but pid file exists!"
                one_failed=true
            else
                echo "celeryd (node $node) (pid $pid) is running..."
            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
    ;;
    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/celeryd {start|stop|restart|kill|create-paths}"
        exit 64  # EX_USAGE
    ;;
esac

exit 0

#!/usr/bin/python
# -*- coding: utf-8 -*-
import os
import sys

path = '/srv/www/web-system/'
if path not in sys.path:
    sys.path.append(path)
    sys.path.append(path + 'myproject/')

os.environ['DJANGO_SETTINGS_MODULE'] = 'myproject.settings'

import djcelery
djcelery.setup_loader()

import django.core.handlers.wsgi
application = django.core.handlers.wsgi.WSGIHandler()
这是我的DJ芹菜相关设置：

# For Celery & RabbitMQ:
# Create user and vhost for RabbitMQ with the following commands:
#
# $ sudo rabbitmqctl add_user myproject <mypassword>
# $ sudo rabbitmqctl add_vhost myproject
# $ sudo rabbitmqctl set_permissions -p myproject myproject ".*" ".*" ".*"
# Format: amqp://user:password@host:port/vhost
BROKER_URL = 'amqp://myproject:mypassword@localhost:5672/myproject'
import djcelery
djcelery.setup_loader()

#对于芹菜和兔肉MQ：
#使用以下命令为RabbitMQ创建用户和vhost：
#
#$sudo rabbitmqctl添加用户myproject
#$sudo rabbitmqctl add_vhost myproject
#$sudo rabbitmqctl set_权限-p myproject myproject“*”.*”
#格式：amqp://user:password@主机：端口/vhost
经纪人amqp://myproject:mypassword@本地主机：5672/myproject'
进口芹菜
djcelery.setup_loader（）
请，任何建议都将不胜感激！！！！提前感谢…

您的代码中可能有错误。尝试使用手动运行它

celery worker -A appname
如果它抛出一个错误，那么您就知道它出了什么问题。

它很可能与您系统上的内存有关
[2017-08-02 10:00:32004:CRITICAL/MainProcess]不可恢复的错误：操作错误（12，“无法分配内存”） 回溯（最近一次呼叫最后一次）

多亏了@Adriaan

，我才调试了我的电脑。你解决过这个问题吗？@wdh:是的！我解决了，但我不记得到底发生了什么。芹菜执行的代码中有错误（我想它们在我的定期任务中），当它们崩溃时，由于某种原因，芹菜也崩溃了。我把旗子（指纹）放在我所有与芹菜相关的代码中，哈哈哈，直到我找到了崩溃的原因。我猜有些例外是芹菜没有抓到，并使芹菜停止。但我再说一遍，我不记得到底发生了什么。我希望这个不太专业的老调试技术可以帮助您：）谢谢，这真的很有用！我也有同样的问题，但它是由循环导入引起的。它通过手动运行worker来帮助调试启动问题，如：
/path/to/manage.py芹菜工人--time limit=86400--concurrency=8-n dynode--logfile=/path/to/celery.log--loglevel=debug--pidfile=/path/to/celeryd.pid--workdir=/path/to/workdir/
检查问题中的注释。它已经解决了，正如你所说，这是我代码中的一个错误。谢谢你的贡献！是的，成功了。至少它帮助我获取/查看了错误/异常日志。这只是一个猜测。。。因此，与其说是回答，不如说是评论。