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diff --git a/health/notifications/custom/README.md b/health/notifications/custom/README.md index df8f88e4..ad64cea2 100644 --- a/health/notifications/custom/README.md +++ b/health/notifications/custom/README.md @@ -1,29 +1,128 @@ -<!-- -title: "Custom" -sidebar_label: "Custom endpoint" -custom_edit_url: "https://github.com/netdata/netdata/edit/master/health/notifications/custom/README.md" -learn_status: "Published" -learn_topic_type: "Tasks" -learn_rel_path: "Setup/Notification/Agent" -learn_autogeneration_metadata: "{'part_of_cloud': False, 'part_of_agent': True}" ---> - -# Custom - -Netdata allows you to send custom notifications to any endpoint you choose. - -To configure custom notifications, you will need to customize `health_alarm_notify.conf`. Open the file for editing -using [`edit-config`](https://github.com/netdata/netdata/blob/master/docs/configure/nodes.md#use-edit-config-to-edit-configuration-files) from the [Netdata config -directory](https://github.com/netdata/netdata/blob/master/docs/configure/nodes.md#the-netdata-config-directory), which is typically at `/etc/netdata`. +# Custom Agent alert notifications + +Netdata Agent's alert notification feature allows you to send custom notifications to any endpoint you choose. + +> ### Note +> +> This file assumes you have read the [Introduction to Agent alert notifications](https://github.com/netdata/netdata/blob/master/health/notifications/README.md), detailing how the Netdata Agent's alert notification method works. + +## Prerequisites + +You need to have terminal access to the Agent you wish to configure. + +## Configure Netdata to send alert notifications to a custom endpoint + +> ### Info +> +> This file mentions editing configuration files. +> +> - To edit configuration files in a safe way, we provide the [`edit config` script](https://github.com/netdata/netdata/blob/master/docs/configure/nodes.md#use-edit-config-to-edit-configuration-files) located in your [Netdata config directory](https://github.com/netdata/netdata/blob/master/docs/configure/nodes.md#the-netdata-config-directory) (typically is `/etc/netdata`) that creates the proper file and opens it in an editor automatically. +> Note that to run the script you need to be inside your Netdata config directory. +> +> It is recommended to use this way for configuring Netdata. + +Edit `health_alarm_notify.conf`, changes to this file do not require restarting Netdata: + +1. Set `SEND_CUSTOM` to `YES`. +2. The `DEFAULT_RECIPIENT_CUSTOM`'s value is dependent on how you handle the `${to}` variable inside the `custom_sender()` function. + All roles will default to this variable if left unconfigured. +3. Edit the `custom_sender()` function. + You can look at the other senders in `/usr/libexec/netdata/plugins.d/alarm-notify.sh` for examples of how to modify the function in this configuration file. + + The following is a sample `custom_sender()` function in `health_alarm_notify.conf`, to send an SMS via an imaginary HTTPS endpoint to the SMS gateway: + + ```sh + custom_sender() { + # example human readable SMS + local msg="${host} ${status_message}: ${alarm} ${raised_for}" + + # limit it to 160 characters and encode it for use in a URL + urlencode "${msg:0:160}" >/dev/null; msg="${REPLY}" + + # a space separated list of the recipients to send alarms to + to="${1}" + + for phone in ${to}; do + httpcode=$(docurl -X POST \ + --data-urlencode "From=XXX" \ + --data-urlencode "To=${phone}" \ + --data-urlencode "Body=${msg}" \ + -u "${accountsid}:${accounttoken}" \ + https://domain.website.com/) + + if [ "${httpcode}" = "200" ]; then + info "sent custom notification ${msg} to ${phone}" + sent=$((sent + 1)) + else + error "failed to send custom notification ${msg} to ${phone} with HTTP error code ${httpcode}." + fi + done + } + ``` + + The supported variables that you can use for the function's `msg` variable are: + + | Variable name | Description | + |:---------------------------:|:---------------------------------------------------------------------------------| + | `${alarm}` | Like "name = value units" | + | `${status_message}` | Like "needs attention", "recovered", "is critical" | + | `${severity}` | Like "Escalated to CRITICAL", "Recovered from WARNING" | + | `${raised_for}` | Like "(alarm was raised for 10 minutes)" | + | `${host}` | The host generated this event | + | `${url_host}` | Same as ${host} but URL encoded | + | `${unique_id}` | The unique id of this event | + | `${alarm_id}` | The unique id of the alarm that generated this event | + | `${event_id}` | The incremental id of the event, for this alarm id | + | `${when}` | The timestamp this event occurred | + | `${name}` | The name of the alarm, as given in netdata health.d entries | + | `${url_name}` | Same as ${name} but URL encoded | + | `${chart}` | The name of the chart (type.id) | + | `${url_chart}` | Same as ${chart} but URL encoded | + | `${family}` | The family of the chart | + | `${url_family}` | Same as ${family} but URL encoded | + | `${status}` | The current status : REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL | + | `${old_status}` | The previous status: REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL | + | `${value}` | The current value of the alarm | + | `${old_value}` | The previous value of the alarm | + | `${src}` | The line number and file the alarm has been configured | + | `${duration}` | The duration in seconds of the previous alarm state | + | `${duration_txt}` | Same as ${duration} for humans | + | `${non_clear_duration}` | The total duration in seconds this is/was non-clear | + | `${non_clear_duration_txt}` | Same as ${non_clear_duration} for humans | + | `${units}` | The units of the value | + | `${info}` | A short description of the alarm | + | `${value_string}` | Friendly value (with units) | + | `${old_value_string}` | Friendly old value (with units) | + | `${image}` | The URL of an image to represent the status of the alarm | + | `${color}` | A color in AABBCC format for the alarm | + | `${goto_url}` | The URL the user can click to see the netdata dashboard | + | `${calc_expression}` | The expression evaluated to provide the value for the alarm | + | `${calc_param_values}` | The value of the variables in the evaluated expression | + | `${total_warnings}` | The total number of alarms in WARNING state on the host | + | `${total_critical}` | The total number of alarms in CRITICAL state on the host | + +You can then have different `${to}` variables per **role**, by editing `DEFAULT_RECIPIENT_CUSTOM` with the variable you want, in the following entries at the bottom of the same file: + +```conf +role_recipients_custom[sysadmin]="systems" +role_recipients_custom[domainadmin]="domains" +role_recipients_custom[dba]="databases systems" +role_recipients_custom[webmaster]="marketing development" +role_recipients_custom[proxyadmin]="proxy-admin" +role_recipients_custom[sitemgr]="sites" +``` -You can look at the other senders in `/usr/libexec/netdata/plugins.d/alarm-notify.sh` for examples of how to modify the `custom_sender()` function in `health_alarm_notify.conf`. +An example working configuration would be: -As with other notifications, you will also need to define the recipient list in `DEFAULT_RECIPIENT_CUSTOM` and/or the `role_recipients_custom` array. +```conf +#------------------------------------------------------------------------------ +# custom notifications -The following is a sample `custom_sender` function in `health_alarm_notify.conf`, to send an SMS via an imaginary HTTPS endpoint to the SMS gateway: +SEND_CUSTOM="YES" +DEFAULT_RECIPIENT_CUSTOM="" -``` - custom_sender() { +# The custom_sender() is a custom function to do whatever you need to do +custom_sender() { # example human readable SMS local msg="${host} ${status_message}: ${alarm} ${raised_for}" @@ -35,63 +134,22 @@ The following is a sample `custom_sender` function in `health_alarm_notify.conf` for phone in ${to}; do httpcode=$(docurl -X POST \ - --data-urlencode "From=XXX" \ - --data-urlencode "To=${phone}" \ - --data-urlencode "Body=${msg}" \ - -u "${accountsid}:${accounttoken}" \ + --data-urlencode "From=XXX" \ + --data-urlencode "To=${phone}" \ + --data-urlencode "Body=${msg}" \ + -u "${accountsid}:${accounttoken}" \ https://domain.website.com/) - if [ "${httpcode}" = "200" ]; then - info "sent custom notification ${msg} to ${phone}" - sent=$((sent + 1)) - else - error "failed to send custom notification ${msg} to ${phone} with HTTP error code ${httpcode}." - fi + if [ "${httpcode}" = "200" ]; then + info "sent custom notification ${msg} to ${phone}" + sent=$((sent + 1)) + else + error "failed to send custom notification ${msg} to ${phone} with HTTP error code ${httpcode}." + fi done } ``` -Variables available to the custom_sender: - -- `${to_custom}` the list of recipients for the alarm -- `${host}` the host generated this event -- `${url_host}` same as `${host}` but URL encoded -- `${unique_id}` the unique id of this event -- `${alarm_id}` the unique id of the alarm that generated this event -- `${event_id}` the incremental id of the event, for this alarm id -- `${when}` the timestamp this event occurred -- `${name}` the name of the alarm, as given in Netdata health.d entries -- `${url_name}` same as `${name}` but URL encoded -- `${chart}` the name of the chart (type.id) -- `${url_chart}` same as `${chart}` but URL encoded -- `${family}` the family of the chart -- `${url_family}` same as `${family}` but URL encoded -- `${status}` the current status : REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL -- `${old_status}` the previous status: REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL -- `${value}` the current value of the alarm -- `${old_value}` the previous value of the alarm -- `${src}` the line number and file the alarm has been configured -- `${duration}` the duration in seconds of the previous alarm state -- `${duration_txt}` same as `${duration}` for humans -- `${non_clear_duration}` the total duration in seconds this is/was non-clear -- `${non_clear_duration_txt}` same as `${non_clear_duration}` for humans -- `${units}` the units of the value -- `${info}` a short description of the alarm -- `${value_string}` friendly value (with units) -- `${old_value_string}` friendly old value (with units) -- `${image}` the URL of an image to represent the status of the alarm -- `${color}` a color in #AABBCC format for the alarm -- `${goto_url}` the URL the user can click to see the Netdata dashboard -- `${calc_expression}` the expression evaluated to provide the value for the alarm -- `${calc_param_values}` the value of the variables in the evaluated expression -- `${total_warnings}` the total number of alarms in WARNING state on the host -- `${total_critical}` the total number of alarms in CRITICAL state on the host - -The following are more human friendly: - -- `${alarm}` like "name = value units" -- `${status_message}` like "needs attention", "recovered", "is critical" -- `${severity}` like "Escalated to CRITICAL", "Recovered from WARNING" -- `${raised_for}` like "(alarm was raised for 10 minutes)" - +## Test the notification method +To test this alert notification method refer to the ["Testing Alert Notifications"](https://github.com/netdata/netdata/blob/master/health/notifications/README.md#testing-alert-notifications) section of the Agent alert notifications page. |