I'm trying to restart my server with cron. I've found this link:
https://help.openshift.com/hc/en-us/articles/202187644-Shell-scripts-using-Cron-or-action-hooks-can-t-execute-shell-commands
But does not work. This is my script:
#!/bin/bash
source /usr/bin/rhcsh
ctl_all restart
And this the output:
/usr/bin/rhcsh: line 7: source: filename argument required
source: usage: source filename [arguments]
/usr/bin/rhcsh: line 32: build_path: command not found
/usr/bin/rhcsh: line 33: build_ld_library_path: No such file or directory
*********************************************************************
You are accessing a service that is for use only by authorized users.
If you do not have authorization, discontinue use at once.
Any use of the services is subject to the applicable terms of the
agreement which can be found at:
https://www.openshift.com/legal
*********************************************************************
Welcome to OpenShift shell
This shell will assist you in managing OpenShift applications.
!!! IMPORTANT !!! IMPORTANT !!! IMPORTANT !!!
Shell access is quite powerful and it is possible for you to
accidentally damage your application. Proceed with care!
If worse comes to worst, destroy your application with "rhc app delete"
and recreate it
!!! IMPORTANT !!! IMPORTANT !!! IMPORTANT !!!
Type "help" for more info.
Command "quota" not found for app xxxxx, please check the node hosting this app
WARNING: This ssh terminal was started without a tty.
It is highly recommended to login with: ssh -t
Restarting services
/usr/bin/rhcsh: line 123: gear: No such file or directory
Any ideas?
Many thanks.
Edit:
Here is rhcsh script (The script has 300 lines, so I've uploaded to a server):
http://www6.zippyshare.com/v/99209351/file.html
Try this:
#!/bin/bash
gear restart --all-cartridges # same as: ctl_all restart
ctl_all is a wrapper function for /usr/bin/gear script.
Related
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.
I have Debian OS, and I want to start shell script after lightdm is being logged in, how can I do that?
I tried to put
session-setup-script=/path/to/my/script in /etc/lightdm/lightdm.conf
file, but It won't work.
Any advice?
Try invoking your script in an ~/.xsession file.
This file is executed upon X server startup. More info here: https://unix.stackexchange.com/questions/47359/what-is-xsession-for
I was having the same issue and realised that I had set the option at the wrong point in /etc/lightdm/lightdm.conf, a silly mistake.
The seat defaults are documented before the [SeatDefaults] heading and I was placing my setting on the line below the documentation.
so
# session-setup-script = Script to run when starting a user session (runs as root)
session-setup-script=/usr/bin/bla
Looking further down the file I found the heading [SeatDefaults] and below that the setting.
#session-setup-script=
Un-commenting that line and setting the script worked as expected.
I have an arch linux setup and installed neo4j through the arch user repository (yaourt -S neo4j), and I'm able to run the web console fine (sudo neo4j console with seemingly normal output and full functionality), however when trying to start the server (sudo neo4j start), I encounter the following error message:
/usr/share/neo4j/bin/utils: line 345: [: -lt: unary operator expected
Using additional JVM arguments: -server -XX:+DisableExplicitGC -Dorg.neo4j.server.properties=/etc/neo4j/neo4j-server.properties -Djava.util.logging.config.file=/etc/neo4j/logging.properties -Dlog4j.configuration=file:/etc/neo4j/log4j.properties -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled
Starting Neo4j Server...cat: /run/neo4j/neo4j-service.pid: No such file or directory
process []... waiting for server to be ready. Failed to start within 120 seconds.
Neo4j Server may have failed to start, please check the logs.
rm: cannot remove ‘/run/neo4j/neo4j-service.pid’: No such file or directory
There's no delay before the error message is printed, so it seems to be something other than the timeout. I'm quite new to neo4j (I worked through a fair bit of the user manual using the web console, but no development or server config experience), so I'm not really sure what else might be relevant. I tried looking through the utils script and the error appears to be where it attempts to su neo4j, but it also seems to proceed to attempt to start the server. I also tried changing the port it's starting on as in this question, but no change. The only log I can find just has this over and over (with appropriate timestamps):
Oct 15, 2014 1:33:49 AM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.9 09/02/2011 11:17 AM'
Any help at all would be appreciated!
EDIT:
The line 345 that it's failing on is the end of this snippet:
if [ $UID == 0 ] ; then
OPEN_FILES=`su $NEO4J_USER -c "ulimit -n"`
else
OPEN_FILES=`ulimit -n`
fi
if [ $OPEN_FILES -lt 40000 ]; then
From doing some echo debugging, it seems that su $NEO4J_USER is failing, probably because $NEO4J_USER is set to neo4j, a user that does not exist on my system. I tried setting that to root in one of the config files, but evidently that's not working properly. Arch is a continual learning experience for me, but I've not had to add a new user before to get software working.
The interesting line here is:
/usr/share/neo4j/bin/utils: line 345: [: -lt: unary operator expected
I assume that is caused by a wrong default shell for the neo4j user. What default is currently set for the neo4j system user? Try to switch that to bash. The startup scripts should work nicely with bash.
On a Unix server, I am running an application engine via the process scheduler.
In it, I am attempting to use a "zip" Unix command from within an "Exec" pplcode function.
However, I only get the error
PS_Exec(P): Error executing batch command with reason: No such file or directory (2)
I have tried it several ways. The most logical approach I thought was to change directory back to the root, then change to the specified directory so that I could easily use the zip command, such as the following...
Exec("cd / && cd /opt/psfin/pt850/dat/PSFIN1/PYMNT && zip INVREND INVREND.XML");
1643 12.20.34 0.000048 72: Exec("cd /opt/psfin/pt850/dat/PSFIN1/PYMNT");
1644 12.20.34 0.001343 PS_Exec(P): Error executing batch command with reason: No such file or directory (2)
I've even tried the following....just to see if anything works from within an Exec...
Exec("ls");
Sure enough, it gave the same error.
Now, some of you may be wondering, does the account that is associated with the process scheduler actually have authority on this particular directory path on the server ? Well, I was able to create the xml file given in the previous command with no problems.
I just cannot seem to be able to modify it with the Exec issuance of Unix commands.
I'm wondering if this is an error of rights and permissions from the unix server with regards to the operator id that the process scheduler is running from. However, given that it can create and write to a file there, I cannot understand why the Exec command would be met with any resistance....Just my gut shot in the dark...
Any help would be GREATLY appreciated!!!
Thanks,
Flynn
Not sure if you're still having an issue, but in your Exec code, adding the optional %FilePath_Absolute constant should help. When that constant is left off, PS automatically prefixes all commands with <PS_HOME>. You'll have to specify absolute paths with this flag on though. I've changed the command to something that should work.
Exec("zip /opt/psfin/pt850/dat/PSFIN1/PYMNT/INVREND /opt/psfin/pt850/dat/PSFIN1/PYMNT/INVREND.XML", %FilePath_Absolute);
The documentation at PeopleBooks is a little confusing sometimes, but it explains it fairly well in this case.
You can always store the absolute location in a variable and prefix that to your commands so you don't have to keep typing out /opt/psfin/pt850/dat/PSFIN1/PYMNT/.
I'm about to deploy my first Play app, (very excited). I read on playframework.org about the framework id and I want to rejigger my config to take advantage of it. I'm currently on dev but I want to deploy to stage. I want to edit my config to differentiate between dev and stage settings.
My problem, when I type play id I get the following error, "[Errno 13] Permission denied: '/opt/play-1.2.3/id'"
I'm new to Linux BTW.
So I thought, hmmm, maybe I need to sudo? So I use "sudo su -" and try again, but now I get the error, "command not found".
The issue was that play-1.2.3 was not in my path for my sudo account. Once sudo(ed) in, I ran export PATH=$PATH:/opt/play-1.2.3 and then I was able to run the play id command. I AM SO SMART SMRT, learning Linux all on my own baby!