i successfully tokyo tyrant and tokyo cabinet now i have to start the tokyo tyrant server when i run the command
./ttservctl start
instead of starting the server it is giving me error and the output is
ritesh#ritesh-desktop:~/tokyotyrant-1.1.33$ sudo ./ttservctl start
Starting the server of Tokyo Tyrant
Executing: ttserver -port 1978 -dmn -pid /var/ttserver/pid
./ttservctl: 76: ./ttservctl: ttserver: not found
The server could not started
how to resolve this error i am new to tokyo tyrant please guideline!!
you can find the "ttserver" file by using the this simple command and the use the result as as bash command:
find / -name ttserver
when i used the command it gave me a result like this:
/usr/local/tokyotyrant-1.1.33/bin/ttserver
ttservctl is the shell script used to start/stop/restart the Tokyo Tyrant server (a.k.a startup script). This startup script is just a wrapper around the ttserver command-line tool.
Your problem here is that your shell cannot find the ttserver tool which is certainly not in your $PATH.
It sounds as if:
you try to execute the startup script located at the root of the Tokyo Tyrant source code: ./ttservctl
and thus, you have NOT installed Tokyo Tyrant but just built it (i.e ./configure && make)
You should re-build it and run make install: by default it will be installed under /usr/local but you can change this at configure time via the --prefix=/path/to/dest option.
Once done just hit ttservctl start without the ./ and it should work.
Related
Info + objective:
I'm using MAAS to deploy workstations with Ubuntu.
MAAS just deploys the machine with stock Ubuntu, and I then run a bash script I wrote to set up everything needed.
So far, I've ran that bash script manually on the newly deployed machines. Now, I'm trying to have MAAS run that script automatically.
What I did + error:
In the MAAS machine, I create the following file curtin file called /var/snap/maas/current/preseeds/curtin_userdata_ubuntu which contains the following:
write_files:
bash_script:
path: /root/script.sh
content: |
#!/bin/bash
echo blabla
... very long bash script
permissions: '0755'
late_commands:
run_script: ["/bin/bash /root/script.sh"]
However, in the log, I see the following:
known-caiman cloud-init[1372]: Command: ['/bin/bash /root/script.sh']
known-caiman cloud-init[1372]: Exit code: -
known-caiman cloud-init[1372]: Reason: [Errno 2] No such file or directory: '/bin/bash /root/script.sh': '/bin/bash /root/script.sh'
Question
I'm not sure putting such a large bash script in the curtin file is a good idea. Is there a way to store the bash script on the MAAS machine, and have curtin upload it to the server, and then execute it? If not, Is it possible to fix the error I'm having?
Thanks ahead!
This worked executing the command:
["curtin", "in-target", "--", "/bin/bash", "/root/script.sh"]
Though this method still means I have to write to a file and then execute it. I'm still hoping there's a way to upload a file and then execute it.
I do not add my script to curtin file.
I run below command and deploy servers.
maas admin machine deploy $system_id user_data=$(base64 -w0 /root/script.sh)
I would try
runcmd:
- [/bin/scp, user#host:/somewhere/script.sh, /root/]
late_commands:
run_script: ['/bin/bash', '/root/script.sh']
This obviously imply that you inject the proper credentials on the machine being deployed.
I am working with Ubuntu 16.04 and I have two shell scripts:
run_roscore.sh : This one fires up a roscore in one terminal.
run_detection_node.sh : This one starts an object detection node in another terminal and should start up once run_roscore.sh has initialized the roscore.
I need both the scripts to execute as soon as the system boots up.
I made both scripts executable and then added the following command to cron:
#reboot /path/to/run_roscore.sh; /path/to/run_detection_node.sh, but it is not running.
I have also tried adding both scripts to the Startup Applications using this command for roscore: sh /path/to/run_roscore.sh and following command for detection node: sh /path/to/run_detection_node.sh. And it still does not work.
How do I get these scripts to run?
EDIT: I used the following command to see the system log for the CRON process: grep CRON /var/log/syslog and got the following output:
CRON[570]: (CRON) info (No MTA installed, discarding output).
So I installed MTA and then systemlog shows:
CRON[597]: (nvidia) CMD (/path/to/run_roscore.sh; /path/to/run_detection_node.sh)
I am still not able to see the output (which is supposed to be a camera stream with detections, as I see it when I run the scripts directly in a terminal). How should I proceed?
Since I got this working eventually, I am gonna answer my own question here.
I did the following steps to get the script running from startup:
Changed the type of the script from shell to bash (extension .bash).
Changed the shebang statement to be #!/bin/bash.
In Startup Applications, give the command bash path/to/script to run the script.
Basically when I changed the shell type from sh to bash, the script starts running as soon as the system boots up.
Note, in case this helps someone: My intention to have run_roscore.bash as a separate script was to run roscore as a background process. One can run it directly from a single script (which is also running the detection node) by having roscore& as a command before the rosnode starts. This command will fire up the master as a background process and leave the same terminal open for following commands to be executed.
If you could install immortal you could use the require option to start in sequence your services, for example, this is could be the run config for /etc/immortal/script1.yml:
cmd: /path/to/script1
log:
file: /var/log/script1.log
wait: 1
require:
- script2
And for /etc/immortal/script2.yml
cmd: /path/to/script2
log:
file: /var/log/script2.log
What this will do it will try to start both scripts on boot time, the first one script1 will wait 1 second before starting and also wait for script2 to be up and running, see more about the wait and require option here: https://immortal.run/post/immortal/
Based on your operating system you will need to configure/setup immortaldir, her is how to do it for Linux: https://immortal.run/post/how-to-install/
Going more deep in the topic of supervisors there are more alternatives here you could find some: https://en.wikipedia.org/wiki/Process_supervision
If you want to make sure that "Roscore" (whatever it is) gets started when your Ubuntu starts up then you should start it as a service (not via cron).
See this question/answer.
Can any node.js experts tell me how I might configure node JS to autostart a server when my machine boots?
I'm on Windows
This isn't something to configure in node.js at all, this is purely OS responsibility (Windows in your case). The most reliable way to achieve this is through a Windows Service.
There's this super easy module that installs a node script as a windows service, it's called node-windows (npm, github, documentation). I've used before and worked like a charm.
var Service = require('node-windows').Service;
// Create a new service object
var svc = new Service({
name:'Hello World',
description: 'The nodejs.org example web server.',
script: 'C:\\path\\to\\helloworld.js'
});
// Listen for the "install" event, which indicates the
// process is available as a service.
svc.on('install',function(){
svc.start();
});
svc.install();
p.s.
I found the thing so useful that I built an even easier to use wrapper around it (npm, github).
Installing it:
npm install -g qckwinsvc
Installing your service:
> qckwinsvc
prompt: Service name: [name for your service]
prompt: Service description: [description for it]
prompt: Node script path: [path of your node script]
Service installed
Uninstalling your service:
> qckwinsvc --uninstall
prompt: Service name: [name of your service]
prompt: Node script path: [path of your node script]
Service stopped
Service uninstalled
If you are using Linux, macOS or Windows pm2 is your friend. It's a process manager that handle clusters very well.
You install it:
npm install -g pm2
Start a cluster of, for example, 3 processes:
pm2 start app.js -i 3
And make pm2 starts them at boot:
pm2 startup
It has an API, an even a monitor interface:
Go to github and read the instructions. It's easy to use and very handy. Best thing ever since forever.
If I'm not wrong, you can start your application using command line and thus also using a batch file. In that case it is not a very hard task to start it with Windows login.
You just create a batch file with the following content:
node C:\myapp.js
and save it with .bat extention. Here myapp.js is your app, which in this example is located in C: drive (spcify the path).
Now you can just throw the batch file in your startup folder which is located at C:\Users\%username%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
Just open it using %appdata% in run dailog box and locate to >Roaming>Microsoft>Windows>Start Menu>Programs>Startup
The batch file will be executed at login time and start your node application from cmd.
This can easily be done manually with the Windows Task Scheduler.
First, install forever.
Then, create a batch file that contains the following:
cd C:\path\to\project\root
call C:\Users\Username\AppData\Roaming\npm\forever.cmd start server.js
exit 0
Lastly, create a scheduled task that runs when you log on. This task should call the batch file.
I would recommend installing your node.js app as a Windows service, and then set the service to run at startup. That should make it a bit easier to control the startup action by using the Windows Services snapin rather than having to add or remove batch files in the Startup folder.
Another service-related question in Stackoverflow provided a couple of (apprently) really good options. Check out How to install node.js as a Windows Service. node-windows looks really promising to me. As an aside, I used similar tools for Java apps that needed to run as services. It made my life a whole lot easier. Hope this helps.
you should try this
npm forever
https://www.npmjs.com/package/forever
Use pm2 to start and run your nodejs processes on windows.
Be sure to read this github discussion of how to set up task scheduler to start pm2: https://github.com/Unitech/pm2/issues/1079
Here is another solution I wrote in C# to auto startup native node server or pm2 server on Windows.
I know there are multiple ways to achieve this as per solutions shared above. I haven't tried all of them but some third party services lack clarity around what are all tasks being run in the background. I have achieved this through a powershell script similar to the one mentioned as windows batch file. I have scheduled it using Windows Tasks Scheduler to run every minute. This has been quite efficient and transparent so far. The advantage I have here is that I am checking the process explicitly before starting it again. This wouldn't cause much overhead to the CPU on the server. Also you don't have to explicitly place the file into the startup folders.
function CheckNodeService ()
{
$node = Get-Process node -ErrorAction SilentlyContinue
if($node)
{
echo 'Node Running'
}
else
{
echo 'Node not Running'
Start-Process "C:\Program Files\nodejs\node.exe" -ArgumentList "app.js" -WorkingDirectory "E:\MyApplication"
echo 'Node started'
}
}
CheckNodeService
Simply use this, install, run and save current process list
https://www.npmjs.com/package/pm2-windows-startup
By my exp., after restart server, need to logon, in order to trigger the auto startup.
Need to create a batch file inside project folder.
Write this code in batch file
#echo off
start npm start
save batch file with myprojectname.bat
Go to run command and press window + R
Enter this command :- shell:common startup
Press ok then folder will be open.
Folder path like as C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp
You will be paste your myprojectname.bat file.
You can check also. Need to system restart.
Copied directly from this answer:
You could write a script in any language you want to automate this (even using nodejs) and then just install a shortcut to that script in the user's %appdata%\Microsoft\Windows\Start Menu\Programs\Startup folder
I'm following a tutorial on PluralSight regarding vagrant and hubot slack setup.
The only difference is that I'm using hubot-slack.
If I start the hubot by invoking hubot script from terminal - everything works fine - the bot connects and responds to commands.
Unfortunately, when the hubot is started as a service from by the upstart - I get this logged into /var/log/upstart/myhubot.log `Cannot load adapter slack - Error: Cannot find module 'hubot-slack'
my /bin/hubot file looks like this (this works just fine when executed from cli):
#!/bin/sh
set -e
npm install
export PATH="node_modules:node_modules/.bin:node_modules/hubot/node_modules/.bin:$PATH"
export HUBOT_SLACK_TOKEN={}
exec node_modules/.bin/hubot --name "hubot" --adapter slack "$#"
my .conf file that's executed as a service looks like this (can't find module):
description "My hubot"
author "Me bla#bla.com"
start on runlevel [2345]
stop on runlevel [016]
setuid vagrant
env HOME="/home/vagrant"
chdir /vagrant/my-awesome-hubot
console log
script
export PATH="node_modules:node_modules/.bin:node_modules/hubot/node_modules/.bin:/usr/bin/coffee:/usr/bin/node:$PATH"
export HUBOT_SLACK_TOKEN={}
echo "DEBUG: `set`" >> /tmp/myhubot.log
exec node_modules/.bin/hubot --name "hubot" --adapter slack
end script
respawn
Keep in mind that the slack token is excluded from these scripts.
Debug reveals that chdir does the correct thing and the pwd is exactly the same as when I execute the script manually.
I've tried removing entire nodejs project and generating with yeoman from scratch and also tried installing hubot-slack both globaly and localy but to no avail.
In case of a .conf file - there is no npm install but in the provision.sh file - I am cd-ing (as a vagrant user) to the root directory, doing npm install - and only then, service restart. I am also making sure to clean up everything before another round of testing before I do - vagrant provision
cp /vagrant/upstart/myhubot.conf /etc/init/myhubot.conf
sudo -u vagrant -i sh -c 'cd /vagrant/my-awesome-hubot; npm install'
service myhubot restart
Do you have any suggestions.
I've just spent the day working through the same issue as this unanswered question so thought I would update with my solution.
The current hubot generated app is started with the cli with command HUBOT_SLACK_TOKEN=xoxb-YOUR-TOKEN-HERE ./bin/hubot --adapter slack whilst in the folder where hubot was generated. Therefore the utilises the default bin/hubot script.
Your conf file needs to pick this up therefore should run the following:
description "My hubot"
author "Me bla#bla.com"
start on runlevel [2345]
stop on runlevel [016]
script
chdir /vagrant/my-awesome-hubot
export PATH="node_modules:node_modules/.bin:node_modules/hubot/node_modules/.bin:/usr/bin/coffee:/usr/bin/node:$PATH"
HUBOT_SLACK_TOKEN=xoxb-YOUR-TOKEN-HERE ./bin/hubot --adapter slack --name "hubot" >> /tmp/myhubot.log
end script
respawn
I've installed an npm package / script in a JAIL on FreeNAS 9.10. (FreeBSD based)
It works perfectly if I run "npm start" in the directory where the scripts are installed.
However, I need this to be auto-starting when the jail starts. I don't know now to do that. Do I need to create an rc script?
Basically all I need to do is give the "npm start" in the correct directory on start up. How do I do that?
thanks
Yes, you can place an rc script within the jail and enable it using the jail's /etc/rc.conf file.
But, for a quick and dirty solution, you could create a /etc/rc.local script (also within the jail's environment) and put your startup commands in there.
See the manual page here.
Don't know about npm start, but for node.js I made such RC srcipt:
#!/bin/sh
# $FreeBSD: 340872 2014-01-24 00:14:07Z mat $
#
# PROVIDE: SERVICENAME
# REQUIRE: NETWORKING
# KEYWORD: shutdown
#
# Add the following line to /etc/rc.conf to enable SERVICENAME:
#
# SERVICENAME_enable="YES"
#
. /etc/rc.subr
name="SERVICENAME"
rcvar=SERVICENAME_enable
pidfile=${SERVICENAME_pidfile:-"/var/run/SERVICENAME.pid"}
command="/usr/sbin/daemon"
#command_args="-r -u USERNAME -P /var/run/SERVICENAME.pid /usr/local/bin/node /home/USERNAME/PROGDIR" # cjayho: restart if crashed
command_args="-u USERNAME -P /var/run/SERVICENAME.pid /usr/local/bin/node /home/USERNAME/PROGDIR"
load_rc_config $name
: ${SERVICENAME_enable:="NO"}
run_rc_command "$1"
name this file something like SERVICENAME and put to /usr/local/etc/rc.d
to enable automatic startup run command as root:
sysrc SERVICENAME_enable="YES"
do not forget to replace SERVICENAME, USERNAME and PROGDIR to your values, and add
process.chdir('/home/USERNAME/PROGDIR')
to your entry js file.