# Slack This is what you will get:  You need: 1. The **incoming webhook URL** as given by slack.com. You can use the same on all your Netdata servers (or you can have multiple if you like - your decision). 2. One or more channels to post the messages to. To get a webhook that works on multiple channels, you will need to login to your slack.com workspace and create an incoming webhook using the [Incoming Webhooks App](https://slack.com/apps/A0F7XDUAZ-incoming-webhooks). Do NOT use the instructions in , as the particular webhooks work only for a single channel. Set the webhook and the recipients in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this: ``` SEND_SLACK="YES" SLACK_WEBHOOK_URL="https://hooks.slack.com/services/XXXXXXXX/XXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" # if a role's recipients are not configured, a notification will be send to: # - A slack channel (syntax: '#channel' or 'channel') # - A slack user (syntax: '@user') # - The channel or user defined in slack for the webhook (syntax: '#') # empty = do not send a notification for unconfigured roles DEFAULT_RECIPIENT_SLACK="alarms" ``` You can define multiple recipients like this: `# #alarms systems @myuser`. This example will send the alarm to: - The recipient defined in slack for the webhook (not known to Netdata) - The channel 'alarms' - The channel 'systems' - The user @myuser You can give different recipients per **role** using these (at the same file): ``` role_recipients_slack[sysadmin]="systems" role_recipients_slack[dba]="databases systems" role_recipients_slack[webmaster]="marketing development" ```