troubleshooting:cronstoppedworkingonmacbook
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| troubleshooting:cronstoppedworkingonmacbook [2023/02/25 16:15] – created kamaradski | troubleshooting:cronstoppedworkingonmacbook [2023/03/07 22:51] (current) – [final thoughts] kamaradski | ||
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| ====== why is cron no longer working on my macbook? ====== | ====== why is cron no longer working on my macbook? ====== | ||
| + | |||
| + | ===== troubleshooting process ===== | ||
| If the cron service on your MacBook has stopped working, here are some steps you can take to troubleshoot the issue: | If the cron service on your MacBook has stopped working, here are some steps you can take to troubleshoot the issue: | ||
| * Check the status of the cron service: Use the '' | * Check the status of the cron service: Use the '' | ||
| - | * Check the cron logs: The cron service logs its activities to a file. To view the cron logs, type '' | + | * Check the cron logs: The cron service logs its activities to a file. To view the cron logs, type '' |
| * Check the crontab file: The crontab file is a configuration file that tells the cron service what jobs to run and when. Type '' | * Check the crontab file: The crontab file is a configuration file that tells the cron service what jobs to run and when. Type '' | ||
| * Check the permissions of the cron files: Make sure that the cron files have the correct permissions. Type '' | * Check the permissions of the cron files: Make sure that the cron files have the correct permissions. Type '' | ||
| * Restart the cron service: If none of the above steps resolve the issue,\\ you may need to restart the cron service. Type '' | * Restart the cron service: If none of the above steps resolve the issue,\\ you may need to restart the cron service. Type '' | ||
| + | |||
| + | |||
| + | ===== is the process running? ===== | ||
| + | |||
| + | yes, as expected once for root, and once for the local user: | ||
| + | <code bash> | ||
| + | $ ps aux | grep cron | ||
| + | root | ||
| + | kamaradski | ||
| + | </ | ||
| + | |||
| + | ===== do we have anything in the logs? ===== | ||
| + | |||
| + | no: | ||
| + | <code bash> | ||
| + | $ cat / | ||
| + | </ | ||
| + | However, this is not a good thing as i would expect also a note when crons are getting executed successfully | ||
| + | |||
| + | ===== do we have valid crons? ===== | ||
| + | |||
| + | <code bash> | ||
| + | $ crontab -l | ||
| + | 0 6 * * * cd / | ||
| + | 5 6 * * * cd / | ||
| + | </ | ||
| + | |||
| + | Can we run the command from our current user? => yes: | ||
| + | |||
| + | <code bash> | ||
| + | $ cd / | ||
| + | 12345689% | ||
| + | </ | ||
| + | |||
| + | Hmm just to be sure let me point it to the exact go bin that we want to use, who knows? | ||
| + | |||
| + | <code bash> | ||
| + | $ which go | ||
| + | / | ||
| + | |||
| + | $ crontab -e | ||
| + | crontab: installing new crontab | ||
| + | |||
| + | $ crontab -l | ||
| + | 0 6 * * * cd / | ||
| + | 5 6 * * * cd / | ||
| + | </ | ||
| + | |||
| + | And yay what do you know: this fixed my issue :) | ||
| + | |||
| + | ===== have a look at the file permissions ===== | ||
| + | |||
| + | > By default, the / | ||
| + | |||
| + | <code bash> | ||
| + | $ ls -l / | ||
| + | -rwxr-xr-x 1 root wheel 205440 Jan 11 08:03 / | ||
| + | |||
| + | sudo ls -l / | ||
| + | Password: | ||
| + | total 8 | ||
| + | -rw-------@ 1 root wheel 420 Feb 25 17:40 kamaradski | ||
| + | </ | ||
| + | |||
| + | This is fine, my particular issue was already fixed in the previous step, however, if your issue is still happening you can always try edit this file to 644 and test again. | ||
| + | |||
| + | ===== why is cron behaving differently? | ||
| + | |||
| + | The cron daemon runs in the background of a system and executes scheduled tasks based on a predefined schedule. These tasks are executed in a separate environment, | ||
| + | |||
| + | When a user logs into a system, they are assigned a shell, which defines their environment variables, such as PATH, HOME, and others. These environment variables are specific to the user's session and are not shared with other users or processes running on the system. | ||
| + | |||
| + | In contrast, the environment in which cron jobs run is defined by the cron daemon itself. The cron daemon sets its own environment variables, which are different from those of the user who is logged in. This means that the cron jobs may not have access to the same resources or settings as the user who is logged in, such as environment variables or configuration files. | ||
| + | |||
| + | Therefore, it's essential to consider the environment in which cron jobs run when scheduling tasks. It's also important to ensure that the necessary environment variables and resources are available to the cron jobs to ensure that they execute correctly. This can include setting the appropriate environment variables within the cron job itself or modifying the system' | ||
| + | |||
| + | So obviously things like the below will not work: | ||
| + | * Any EnvVar you have set under your user environment via for example '' | ||
| + | * Use of standard variables like '' | ||
| + | * $PATH is also empty, so this is why I needed to specify the full path for the Go application in the example above | ||
| + | |||
troubleshooting/cronstoppedworkingonmacbook.1677341750.txt.gz · Last modified: 2023/02/25 16:15 by kamaradski
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