One of the drives on my server recently gave out and corrupted the OS. I was able to restore all the files, but now I have a backup drive with just the file system; not bootable. I'm setting up a new server now, and need to setup the old cron jobs. Is there a way to look through the file structure to see all cron jobs that were setup on the old server? Server was CentOS, not sure of version. Thanks in advance!
Crontabs belonging to individual users should be found in
/var/spool/cron/##USERNAME##
Whereas the server-wide crontab should be in
/etc/crontab
Related
I have a simple python script that is hosted on Heroku and I'm using the Heroku Scheduler to run the script every hour/day. The script will possibly update a simple .txt file (could also be a config var if possible) when it runs. When it does run and conditions are met, I need that value stored and used when the next scheduled script runs. The value changed is simply a date.
However, since the app is containerized based on the most recent code I have on Github, it doesn't store those changes anywhere to be used again. Is there any way I can accomplish to update the file and use it every time it runs? Any simple add-ons or other solutions I can use?
Heroku Dynos have a local file system that does not survive an application restart or redeployment, therefore it cannot be used to persist data.
Typically you have 2 options:
use a database. On Heroku you can use (there is also a Free tier) Postgres
save the file on external storage (S3, Dropbox, even GitHub). See Files on Heroku for details and examples
I am trying to create a script to automate the Veeam backup using PowerShell.
I know in the free version I only have 2 options (Veeamzip and Quick Backup).
I have a Drobo on the network with the share setup and accessible.
I have gone into all the VMWare Hypervisors and created an account with the proper permissions to run a backup.
I am down to creating the syntax for running the backup.
I am confused when I look at their document. I am not sure if I am supposed to use a copy, replication, a backup job, or what.
If I can get the initial syntax to run a backup of one machine I know I can build the script.
Any information would be greatly appreciated.
This can not be done with this version of VMWare.
I have two drives A and B. Using a python script I am creating some files in "A" drive and I am running a powerscript which copies all the files in the drive A to drive B in the interval of 1 sec.
I am getting this error in my powershell.
2015/03/10 23:55:35 ERROR 32 (0x00000020) Time-Stamping Destination
File \x.x.x.x\share1\source\ Dummy_100.txt The process cannot access
the file because it is being used by another process. Waiting 30
seconds...
How will I overcome this error?
This happened is because the file is locked by running process. To fix this, download Process Explorer. Then use Find>Find Handle or DLL, find out which process locked this file. Use 'taskkill' to kill that process in commandline. You will be fine.
if you want to skip this files you can use /r:n that n is times of tries
for example /w:3 /r:5 will try 5 time every 3 seconds
How will I overcome this error?
If backup is, what you got in mind, and you encounter in-use files frequently, you look into Volume Shadow Copies (VSS), which allow to copy files despite them being ‘in use’. It's not a product, but a windows technology used by various backup tool.
Sadly, it's not built into robocopy, but can be used in conjunction with it. See
➝ https://superuser.com/a/602833/75914
and especially:
➝ https://github.com/candera/shadowspawn
It could be many reasons.
In my case, I was running a CMD script to copy from one server to another, a heap of SQL Server backups and transaction logs. I too had the same problem because it was trying to write into a log file that was supposedly opened by another process. It was not.
I ran many IP checks and Process ID checkers that I ran out of knowing what was hogging the log file. Event viewer said nothing.
I found out it was not even the log file that was being locked. I was able to delete it by logging into the server as a normal user with no admin privileges!
It was the backup files themselves by the SQL Server Agent. Like #Oseack said, there may have been the need to use another tool whilst the backup files themselves were still being used or locked by the SQL Server Agent.
The way I got around it was to force ROBOCOPY to wait.
/W:5
did it.
I am using Solaris 10.
I have another user apart from root say testuser, which is mounted in NAS file system
I have some script which need to be run as testuser. so I had added them to the crontab of testuser.
As long as NAS is up all the cronjobs are rqn properly, but when NAS goes down then cron itself crashed by giving ! could not obtain latest contract for PID 15621: No such process
this error.
I search for this issue and came to know that because it's .profile file is not accessible due to which it is giving this error. So is there any way by which we can check user specific .profile file exist or not before run any schedule job
Any help on this will be appreciated.
I think a better solution would be to actively monitor the NAS share, and report an error (however errors are reported at your location) if it isn't. You can use tools like nfsstat to get statistics on the NAS share (assuming this NAS share is mounted via NFS). It seems a better solution than checking to see if it's working before running cron -- check to make sure the share is available, because if it isn't, attention is needed.
Cron doesn't depend on anything but time, so it will run regardless of whether or not the user's home directory is available. If the script that the cron job is running is local, then you could prepend a check to make sure the home directory is available before running, otherwise just exit with an error code.
If the script that cron is attempting to run is in the user's home directory, you're out of luck, because an error will occur in even trying to run the script to check for the existence. You will need to check the status of the NAS share before attempting to run the cron job, but the cron job will run regardless. See where I'm going?
Again, I would suggest monitoring the NAS and reporting when it is failing.
We use an ETL process to pull data from Google Cloud Storage, but annoyingly it hangs everytime Google releases udpates to GSUtil, because it sits at a prompt asking if you want to update the library. Fine if you are doing this manually, but not cool when it's being run in an automated SSIS package, as jobs don't finish for days and you keep wasting time with the same stupid cause.
I thought I was going to be cleaver, and add "python gsutil update -n" to the top of the bash script I'm automating the building/execution of in my SSIS Package in the hope to curb this problem, but when I run this command from the prompt in either Windows Server 2008r2 or Windows 7 I get the following:
C:\gsutil>python gsutil update -f -n
Copying gs://pub/gsutil.tar.gz...
OSError: The process cannot access the file because it is being used by another process.
Any help?
P.S. - Also, Google engineers... can you PLEASE remove these prompts? for all of us using these tools in automated processes? I have other things to work on, instead of constantly going back to things like this every few days/weeks.
What version of gsutil are you running?
Also, to be clear: Are you talking about the fact that gsutil checks for available software updates periodically, and if it finds them it then prompts you whether you want to update? Or are you talking about the fact that the gsutil update command asks if you want to perform the update?
If the former, gsutil shouldn't be performing this check/prompting if you are running gsutil from a script not connected to at TTY. If that's not working correctly we'd like to know.
And also, if that's the problem you're having, you can completely disable automated software update checks by setting software_update_check_period=0 in the [GSUtil] section of your .boto config file.