pm2 start 启动js文件启动不了 一直显示stopped
时间: 2024-05-17 14:13:06 浏览: 9
如果 `pm2 start` 启动 JS 文件后一直显示 `stopped`,可能有以下几个原因:
1. 程序启动失败:请检查程序中是否有语法错误、依赖库是否正确安装等问题。你可以使用 `pm2 logs` 命令查看程序的日志,以便更好地了解问题所在。
2. 程序启动后立即崩溃:在这种情况下,`pm2` 会自动将程序状态标记为 `stopped`。请检查程序是否存在内存泄漏等问题。
3. `pm2` 配置文件错误:请确保 `pm2` 配置文件中的路径和程序名称正确。
4. 程序运行完成后自动退出:如果程序没有一直运行,而是在一段时间后就退出了,那么 `pm2` 会将程序状态标记为 `stopped`。请检查程序逻辑是否正确,是否有意外退出的情况。
你可以尝试使用 `pm2 start app.js --no-daemon` 命令来启动程序,并查看详细的错误日志。如果问题仍然存在,请提供更多的详细信息以便更好地帮助你解决问题。
相关问题
net start mysql 系统找不到指定文件
如果您在运行 "net start mysql" 命令时遇到 "系统找不到指定文件" 错误,则可能是以下原因:
1. MySQL 数据库服务未正确安装或配置。
2. MySQL 数据库服务的安装路径未添加到系统的环境变量中。
3. MySQL 数据库服务的名称不正确。
为了解决这个问题,您可以尝试以下步骤:
1. 确保 MySQL 数据库服务已正确安装并配置。您可以检查 "Services" 窗口中是否存在名为 "MySQL" 或 "MySQLxx" 的服务(其中 "xx" 是 MySQL 版本号),并确保该服务的状态为 "Stopped"。
2. 确保 MySQL 的安装路径已添加到系统的环境变量中。您可以使用 "set" 命令来查看当前系统的环境变量,并确保其中包含 MySQL 的安装路径。如果没有,请将其添加到 "Path" 变量中。
3. 确保您使用的是正确的 MySQL 服务名称。在某些情况下,MySQL 的服务名称可能不是 "MySQL" 或 "MySQLxx"。您可以使用 "services.msc" 命令来打开 "Services" 窗口,并查找正确的服务名称。
如果您尝试了以上步骤仍然无法启动 MySQL 数据库服务,请尝试重新安装 MySQL,并确保正确配置您的环境。
ubuntu下的expect文件怎么开机自启动
要让一个expect脚本在Ubuntu开机时自动运行,可以使用以下步骤:
1. 将expect脚本复制到 `/etc/init.d/` 目录中。
2. 在 `/etc/init.d/` 目录中创建一个新文件,例如 `myscript`,并将以下内容复制粘贴到文件中:
```
#!/bin/bash
### BEGIN INIT INFO
# Provides: myscript
# Required-Start: $remote_fs $syslog
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Start myscript at boot time
# Description: Enable service provided by myscript.
### END INIT INFO
# Author: Your Name
# Do NOT "set -e"
# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/usr/sbin:/usr/bin:/sbin:/bin
DESC="Description of the service"
NAME=myscript
DAEMON=/usr/sbin/$NAME
DAEMON_ARGS="--options args"
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0
# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME
# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh
# Define LSB log_* functions.
# Depend on lsb-base (>= 3.2-14) to ensure that this file is present.
. /lib/lsb/init-functions
#
# Function that starts the daemon/service
#
do_start()
{
# Return
# 0 if daemon has been started
# 1 if daemon was already running
# 2 if daemon could not be started
start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
|| return 1
start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
$DAEMON_ARGS \
|| return 2
# Add code here, if necessary, that waits for the process to be ready
# to handle requests from services started subsequently which depend
# on this one. As a last resort, sleep for some time.
}
#
# Function that stops the daemon/service
#
do_stop()
{
# Return
# 0 if daemon has been stopped
# 1 if daemon was already stopped
# 2 if daemon could not be stopped
# other if a failure occurred
start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME
RETVAL="$?"
[ "$RETVAL" = 2 ] && return 2
# Wait for children to finish too if this is a daemon that forks
# and if the daemon is only ever run from this initscript.
# If the above conditions are not satisfied then add some other code
# that waits for the process to drop all resources that could be
# needed by services started subsequently. A last resort is to
# sleep for some time.
start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
[ "$?" = 2 ] && return 2
# Many daemons don't delete their pidfiles when they exit.
rm -f $PIDFILE
return "$RETVAL"
}
#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
#
# If the daemon can reload its configuration without
# restarting (for example, when it is sent a SIGHUP),
# then implement that here.
#
start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
return 0
}
case "$1" in
start)
[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
do_start
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
stop)
[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
do_stop
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
status)
status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
;;
#reload|force-reload)
#
# If do_reload() is not implemented then leave this commented out
# and leave 'force-reload' as an alias for 'restart'.
#
#log_daemon_msg "Reloading $DESC" "$NAME"
#do_reload
#log_end_msg $?
#;;
restart|force-reload)
#
# If the "reload" option is implemented then remove the
# 'force-reload' alias
#
log_daemon_msg "Restarting $DESC" "$NAME"
do_stop
case "$?" in
0|1)
do_start
case "$?" in
0) log_end_msg 0 ;;
1) log_end_msg 1 ;; # Old process is still running
*) log_end_msg 1 ;; # Failed to start
esac
;;
*)
# Failed to stop
log_end_msg 1
;;
esac
;;
*)
#echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
exit 3
;;
esac
exit 0
```
3. 修改以下变量的值:
- `DESC` - 服务的描述
- `NAME` - expect脚本的名称
- `DAEMON` - expect脚本的路径
- `DAEMON_ARGS` - 如果需要的话,可以指定expect脚本的参数
4. 保存并关闭文件。
5. 运行以下命令来设置脚本文件的权限:
```
sudo chmod +x /etc/init.d/myscript
```
6. 运行以下命令来将脚本文件添加到启动序列中:
```
sudo update-rc.d myscript defaults
```
现在,expect脚本应该在Ubuntu开机时自动启动了。