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@@ -16,16 +16,16 @@ Cron triggers offer a way to run Codefresh pipelines based on a specific time sc
Integrate additional settings in the Cron trigger such as simulating a Git event to enrich pipelines with repository details, adding/customizing environment variables, and caching, volume reuse, and notification configurations for the build.
By integrating these additional options, Cron triggers can initiate pipeline executions at the predefined time intervals and at the same time populate the pipeline with repo and branch information from the Git trigger, required environment variables, and specialized behavior, for the build.
By integrating these additional options, Cron triggers can initiate pipeline executions at the predefined time intervals, and at the same time populate the pipeline with repo and branch information from the Git trigger, required environment variables, and specialized behavior for the build.
Create and manage Cron triggers for pipelines through [Codefresh UI](#cron-triggers-in-codefresh-ui), as described in this article.
For the specifications, see [Cron trigger specifications in pipelines]({{site.baseurl}}/docs/integrations/codefresh-api/#cron-triggers).
>**NOTE**
Cron triggers are created in the UTC timezone.
## Legacy Cron triggers in Codefresh
## Legacy Cron triggers in Codefresh
If you see Cron triggers for your pipeline tagged with {::nomarkdown}<img src="../../../../images/icons/icon-warning.png" display=inline-block">{:/} tag, it indicates that you are using the legacy version.
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**Migrate legacy trigger**
* Click the **Edit** icon to view the trigger.
* To migrate, click **Convert**.
##### Migrate legacy Cron triggers
1. Click the **Edit** icon to view the trigger.
1. To migrate, click **Convert**.
Codefresh migrates the legacy Cron trigger and displays a `Trigger updated successfully` message.
Codefresh migrates the legacy Cron trigger and displays a Trigger updated successfully message.
* Open the trigger displays the Settings tab with additional options.
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1. Open the trigger displays the Settings tab with additional options.
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@@ -61,30 +64,30 @@ alt="Cron trigger after migration with Settings tab"
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## Cron triggers in Codefresh UI
Create and manage Cron triggers for pipelines in the Codefresh UI.
There are two parts to creating a Cron trigger in the UI:
1. Defining the schedule for the trigger
To learn about supported `cron` expression formats and aliases, see [Cron expression formats](#cron-expression-formats) in this article.
1. (Optional) Selecting additional options:
* Git trigger event to simulate when the Cron trigger timer is activated. The pipeline is populated with the information from the Git repo such as the repo URL, branch name, latest commit information, including the date and author of the commit.
* Variables to populate for the build
* Caching, volume reuse and notification behavior to override for the build
* Git trigger event to simulate when the Cron trigger timer is activated. The pipeline is populated with the information from the Git repo such as the repo URL, branch name, latest commit information, including the date and author of the commit.
* Variables to populate for the build.
* Caching, volume reuse and notification behavior to override for the build.
1. From the **Simulate Trigger From** drop-down list, select the type of Git trigger to simulate.
The list displays all the Git triggers defined for the pipeline.
The list displays all the Git triggers defined for the pipeline.
1. From the **Select Branch** drop-down list, select the branch of the repository for this build.
1. Expand **Variables**, and add or modify [environment variables]({{site.baseurl}}/docs/pipelines/variables/) for this build.
1. Expand **Advanced Options** and select the overrides for this build. See [Advanced options]({{site.baseurl}}/docs/pipelines/triggers/git-triggers/#advanced-settings-for-git-triggers).
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1. To confirm click **Done**.
* If you defined only the Timer settings, the build is triggered according to the Cron expression.
* If you defined both the Timer and additional Settings, the build is triggered according to the Cron expression, and depending on the settings, the pipeline is populated with the information from the Git repo, additional variables, and notifications when configured.
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1. To confirm click **Done**.
* If you defined only the Timer settings, the build is triggered according to the Cron expression.
* If you defined both the Timer and additional Settings, the build is triggered according to the Cron expression, and depending on the settings, the pipeline is populated with the information from the Git repo, additional variables, and notifications when configured.
{{site.data.callout.callout_tip}}
**TIP**
**TIP**
To edit a Cron trigger after creating it, click the Edit icon.
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@@ -149,6 +151,7 @@ To edit a Cron trigger after creating it, click the Edit icon.
A Cron expression represents a set of time fields through five space-separated fields. You can also use predefined schedules or fixed interval scheduling in place of Cron expressions.
### Cron expression fields
The table below describes the fields you can define in a Cron expression.
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@@ -161,88 +164,86 @@ Day of month | Yes | 1-31 | * / , - ?|
Month | Yes | 1-12 or JAN-DEC | * / , -|
Day of week | Yes | 0-6 or SUN-SAT | * / , - ?|
### Special characters in Cron expressions
The table below describes the purpose of the special characters in a Cron expression.
{: .table .table-bordered .table-hover}
|Special Character | Description |
|---------- | ---------- |
|**Asterisk** (`*`) | Indicates that the Cron expression will match for all values of the field.<br>Using an asterisk in the 5th field (month), would indicate every month.|
|**Slash** (`/`) | Slashes are used to describe increments of ranges. <br>For example `3-59/15` in the 1st field (minutes) would indicate the 3rd minute of the hour and every 15 minutes thereafter. <br>The form `*\/...` is equivalent to the form `first-last/...`, that is, an increment over the largest possible range of the field. <br>The form `N/...` is accepted as meaning `N-MAX/...`, that is, starting at `N`, use the increment until the end of that specific range. It does not wrap around.|
|**Comma** (`,`) | Commas are used to separate items of a list. For example, using `MON,WED,FRI` in the 5th field (day of week) would mean Mondays, Wednesdays and Fridays.|
|**Hyphen** (`-`) | Hyphens are used to define ranges. For example, `9-17` would indicate every hour between 9am and 5pm inclusive.|
|**Question mark** (`?`) | Question marks can be used instead of asterisks (`*`) for leaving either day-of-month or day-of-week blank.|
|Special Character | Description |
|---------- | ---------- |
|**Asterisk** (`*`) | Indicates that the Cron expression will match for all values of the field.<br>Using an asterisk in the 5th field (month), would indicate every month.|
|**Slash** (`/`) | Slashes describe increments of ranges. <br>For example `3-59/15` in the 1st field (minutes) would indicate the 3rd minute of the hour and every 15 minutes thereafter. <br>The form `*\/...` is equivalent to the form `first-last/...`, that is, an increment over the largest possible range of the field. <br>The form `N/...` is accepted as meaning `N-MAX/...`, that is, starting at `N`, use the increment until the end of that specific range. It does not wrap around.|
|**Comma** (`,`) | Commas separate items in a list. For example, using `MON,WED,FRI` in the 5th field (day of week) would mean Mondays, Wednesdays, and Fridays.|
|**Hyphen** (`-`) | Hyphens define ranges. For example, `9-17` would indicate every hour between 9am and 5pm inclusive.|
|**Question mark** (`?`) | Question marks are instead of asterisks (`*`) to leave either day-of-month or day-of-week blank.|
### Predefined scheduling for Cron jobs
You can use one of several predefined schedules instead of a Cron expression.
The table below describes the predefined schedules supported.
|@yearly (or @annually) | Run once a year, midnight, Jan. 1st | 0 0 0 1 1 *|
|@monthly | Run once a month, midnight, first of month | 0 0 0 1 * *|
|@weekly | Run once a week, midnight on Sunday | 0 0 0 * * 0|
|@daily (or @midnight) | Run once a day, midnight | 0 0 0 * * *|
|@hourly | Run once an hour, beginning of hour | 0 0 * * * *|
|@YEARLY (or @ANNUALLY) | Run once a year, midnight, Jan. 1st | 0 0 0 1 1 *|
|@MONTHLY | Run once a month, midnight, first of month | 0 0 0 1 **|
|@WEEKLY | Run once a week, midnight on Sunday | 0 0 0 ** 0|
|@DAILY (or @MIDNIGHT) | Run once a day, midnight | 0 0 0 ** *|
|@HOURLY | Run once an hour, beginning of hour | 0 0 ** **|
### Fixed interval scheduling for Cron jobs
You can also schedule a job to execute at fixed intervals by adding `@every <interval>`. The <interval> is a string that represents the desired frequency.
You can also schedule a job to execute at fixed intervals by adding `@every <interval>`. The <interval> is a string that represents the desired frequency.
For example, `@every 1h30m10s` would indicate a schedule that triggers every 1 hour, 30 minutes, 10 seconds.
>**NOTE**
The interval does not take the runtime of the job into account. For example, if a job takes three minutes to run, and it is scheduled to run every five minutes, it will have only two minutes of idle time between each run.
### Conditional triggers for Cron jobs
Take a look at our Knowledge Base how-to: [Skip pipeline step if triggered by Cron job]({{site.baseurl}}/docs/kb/articles/skip-test-if-pipeline-is-triggered-with-cron/).
## Cron triggers with Codefresh CLI
>**NOTE**
This section is relevant only for legacy Cron triggers and will be deprecated.
This section is relevant only for legacy Cron triggers and will be deprecated.
You can also create and manage Cron triggers for pipelines via the [Codefresh CLI](https://cli.codefresh.io/){:target="\_blank"}.
### Create Cron trigger event via CLI
Create a new `cron` trigger by defining a Cron expression and message.
To learn about supported `cron` expression formats and aliases, see [Cron expression formats](#cron-expression-formats) in this article.
The text message is passed to linked pipelines, whenever the specified `cron` timer is triggered.
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