From bb8becdaaa6e1993c9512a3f93f235c9d8ab0cef Mon Sep 17 00:00:00 2001 From: Akkadius Date: Tue, 3 Oct 2017 22:26:47 -0500 Subject: [PATCH] Implement E-Mail alerting --- app.js | 84 ++++++- config/glass_config.json | 13 +- public/assets/css/glass.css | 3 + public/templates/counters.html | 2 +- public/templates/email_template.html | 346 +++------------------------ public/templates/index.html | 3 +- routes/glass_alert_settings_save.js | 1 + routes/glass_alerts.js | 12 +- 8 files changed, 137 insertions(+), 327 deletions(-) create mode 100644 public/assets/css/glass.css diff --git a/app.js b/app.js index 90575d9..0d5ab0d 100644 --- a/app.js +++ b/app.js @@ -516,11 +516,28 @@ setTimeout(function(){ console.log("[Timer] lpm: %s lpm_th: %s", leases_per_minute, glass_config.leases_per_minute_threshold); if (leases_per_minute <= glass_config.leases_per_minute_threshold && alert_status['leases_per_minute'] == 0) { alert_status['leases_per_minute'] = 1; - slack_message(":warning: WARNING: DHCP leases per minute have dropped below threshold (" + parseInt(glass_config.leases_per_minute_threshold).toLocaleString('en') + ") Current (" + parseInt(leases_per_minute).toLocaleString('en') + ")"); + + slack_message(":warning: WARNING: DHCP leases per minute have dropped below threshold " + + "(" + parseInt(glass_config.leases_per_minute_threshold).toLocaleString('en') + ") " + + "Current (" + parseInt(leases_per_minute).toLocaleString('en') + ")"); + + email_alert("CRITICAL: Leases Per Minute Threshold", "DHCP leases per minute dropped below critical threshold

" + + "Threshold: (" + parseInt(glass_config.leases_per_minute_threshold).toLocaleString('en') + ")
" + + "Current: (" + parseInt(leases_per_minute).toLocaleString('en') + ")

" + + "This is usually indicative of a process or hardware problem and needs to be addressed immediately"); } else if (leases_per_minute >= glass_config.leases_per_minute_threshold && alert_status['leases_per_minute'] == 1) { alert_status['leases_per_minute'] = 0; - slack_message(":white_check_mark: CLEAR: DHCP leases per minute have returned to above threshold (" + parseInt(glass_config.leases_per_minute_threshold).toLocaleString('en') + ") Current (" + parseInt(leases_per_minute).toLocaleString('en') + ")"); + + slack_message(":white_check_mark: CLEAR: DHCP leases per minute have returned to above threshold " + + "(" + parseInt(glass_config.leases_per_minute_threshold).toLocaleString('en') + ") " + + "Current (" + parseInt(leases_per_minute).toLocaleString('en') + ")"); + + email_alert("CLEAR: Leases Per Minute Threshold", "DHCP leases per minute have returned to normal

" + + "Threshold: (" + parseInt(glass_config.leases_per_minute_threshold).toLocaleString('en') + ")
" + + "Current: (" + parseInt(leases_per_minute).toLocaleString('en') + ")" + ); + } } }, (60 * 1000)); @@ -571,7 +588,11 @@ setTimeout(function(){ ) { alert_status_networks_warning[dhcp_data['shared-networks'][i].location] = 1; - slack_message(":warning: WARNING: DHCP shared network utilization (" + dhcp_data['shared-networks'][i].location + ") Current: (" + utilization + "%) Threshold: (" + glass_config.shared_network_warning_threshold + "%)"); + + slack_message(":warning: WARNING: DHCP shared network utilization (" + dhcp_data['shared-networks'][i].location + ") " + + "Current: (" + utilization + "%) " + + "Threshold: (" + glass_config.shared_network_warning_threshold + "%)" + ); } else if ( utilization <= glass_config.shared_network_warning_threshold && @@ -579,7 +600,11 @@ setTimeout(function(){ ) { alert_status_networks_warning[dhcp_data['shared-networks'][i].location] = 0; - slack_message(":white_check_mark: CLEAR: Warning DHCP shared network utilization (" + dhcp_data['shared-networks'][i].location + ") Current: (" + utilization + "%) Threshold: (" + glass_config.shared_network_warning_threshold + "%)"); + + slack_message(":white_check_mark: CLEAR: Warning DHCP shared network utilization (" + dhcp_data['shared-networks'][i].location + ") " + + "Current: (" + utilization + "%) " + + "Threshold: (" + glass_config.shared_network_warning_threshold + "%)" + ); } } @@ -612,4 +637,55 @@ function round(num, places) { return Math.round(num * multiplier) / multiplier; } +/* Load Mailer */ +const nodemailer = require('nodemailer'); + +let transporter = nodemailer.createTransport({ + sendmail: true, + newline: 'unix', + path: '/usr/sbin/sendmail' +}); + +console.log("[Glass Server] Loading E-Mail template..."); + +fs = require('fs'); +var email_body = fs.readFileSync('./public/templates/email_template.html', "utf8"); + +function email_alert(alert_title, alert_message) { + /* E-Mail Template Load */ + console.log("Sending E-Mail...\n"); + + if(typeof glass_config.email_alert_to === "undefined") + return false; + + if (glass_config.email_alert_to == ""){ + console.log("[Glass Server] No email_to specified - returning..."); + return false; + } + + email_body = email_body.replace("[body_content_placeholder]", alert_message); + email_body = email_body.replace("[alert_title]", alert_title); + email_body = email_body.replace("[local_time]", new Date().toString() ); + + var mailOptions = { + from: "Glass Alerting Monitor glass@noreply.com", + to: glass_config.email_alert_to, + subject: "[Glass] " + alert_title, + html: email_body, + }; + transporter.sendMail(mailOptions, function(error, info){ + if(error){ + console.log(error); + } + else { + console.log('Message sent: ' + info.response); + }; + }); +} + +email_alert("CRITICAL: Leases Per Minute Threshold", "DHCP leases per minute dropped below critical threshold

" + + "Threshold: (" + parseInt(glass_config.leases_per_minute_threshold).toLocaleString('en') + ")
" + + "Current: (" + parseInt(leases_per_minute).toLocaleString('en') + ")

" + + "This is usually indicative of a process or hardware problem and needs to be addressed immediately"); + console.log("[Glass Server] Bootup complete"); \ No newline at end of file diff --git a/config/glass_config.json b/config/glass_config.json index 159e611..f139b35 100644 --- a/config/glass_config.json +++ b/config/glass_config.json @@ -5,9 +5,12 @@ "log_file": "/var/log/dhcp.log", "config_file": "/etc/dhcp/dhcpd.conf", "shared_network_critical_threshold": "95", - "shared_network_warning_threshold": "80", - "slack_webhook_url": "https://hooks.slack.com/services/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", - "slack_alert_channel": "#alerting", - "leases_per_minute_threshold": "1000", - "ip_ranges_to_allow": [""] + "shared_network_warning_threshold": "0", + "slack_webhook_url": "", + "slack_alert_channel": "", + "leases_per_minute_threshold": "50", + "ip_ranges_to_allow": [ + "" + ], + "email_alert_to": "" } diff --git a/public/assets/css/glass.css b/public/assets/css/glass.css new file mode 100644 index 0000000..467e23a --- /dev/null +++ b/public/assets/css/glass.css @@ -0,0 +1,3 @@ +.info-box .content .text { + margin-top: 5px !important; +} \ No newline at end of file diff --git a/public/templates/counters.html b/public/templates/counters.html index 1fc861e..06677a7 100644 --- a/public/templates/counters.html +++ b/public/templates/counters.html @@ -40,7 +40,7 @@
SERVER
-
0
+
0
diff --git a/public/templates/email_template.html b/public/templates/email_template.html index 43c6909..d15460a 100644 --- a/public/templates/email_template.html +++ b/public/templates/email_template.html @@ -1,336 +1,56 @@ - + - Glass Alert - - + - - - -
-
- - -
- Warning: You're approaching your limit. Please upgrade. + + + +
+
+ + + - - - +
+ Glass Alerting Monitor
- - - - - - - - - - - - +
- You have 1 free report remaining. -
- Add your credit card now to upgrade your account to a premium plan to ensure you don't miss out on any reports. -
- Upgrade my account -
- Thanks for choosing Company Inc. +
+ + +
+

Alert Trigger

+
  • [alert_title]
    • + +

    Message

    + 
    [body_content_placeholder]
    + +

    Time

    +
  • [local_time]
    • +
    -
    - - - +
    +
    Unsubscribe from these alerts.
    + +
    +

    Glass > an isc dhcp server interface
    Chris Miles

    +
    diff --git a/public/templates/index.html b/public/templates/index.html index ddb2f56..b40b5e4 100644 --- a/public/templates/index.html +++ b/public/templates/index.html @@ -27,6 +27,8 @@ + + @@ -60,7 +62,6 @@