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feat: add VoIP stack Grafana dashboards and Prometheus targets (#123)
Add monitoring for voip-stack Lima VMs (sip-1, pbx-1, media-1): - Add voip-nodes job to Prometheus scrape config - Add VoIP Stack Overview dashboard (all VMs status) - Add OpenSIPS Overview dashboard (SIP proxy metrics) - Add Asterisk Overview dashboard (PBX metrics) - Add RTPEngine Overview dashboard (media relay metrics) Dashboards use node_exporter metrics from the VoIP VMs.
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‎configs/grafana/dashboards/asterisk-overview.json‎

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{
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"title": "Asterisk Overview",
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"uid": "asterisk-overview",
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"tags": ["voip", "asterisk", "pbx", "sip"],
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"refresh": "30s",
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"time": {
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"from": "now-1h",
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"to": "now"
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},
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"panels": [
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{
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"title": "Asterisk VM Status",
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"type": "stat",
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"gridPos": {"h": 4, "w": 6, "x": 0, "y": 0},
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"targets": [
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{
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"expr": "up{job=\"voip-nodes\", instance=\"pbx-1\"}",
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"legendFormat": "pbx-1",
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"refId": "A"
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}
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],
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"fieldConfig": {
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"defaults": {
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"mappings": [{"type": "value", "options": {"0": {"text": "DOWN", "color": "red"}, "1": {"text": "UP", "color": "green"}}}],
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"thresholds": {"mode": "absolute", "steps": [{"color": "red", "value": 0}, {"color": "green", "value": 1}]}
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}
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},
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"options": {"colorMode": "background", "graphMode": "none"},
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "Asterisk Info",
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"type": "text",
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"gridPos": {"h": 4, "w": 18, "x": 6, "y": 0},
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"options": {
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"mode": "markdown",
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"content": "## Asterisk PBX (pbx-1)\n\n**Role:** Call processing, voicemail, IVR, recording\n\n| Port | Protocol | Purpose |\n|------|----------|--------|\n| 5080 | UDP | SIP (internal) |\n| 5038 | TCP | AMI (Asterisk Manager Interface) |\n| 8088 | TCP | ARI (Asterisk REST Interface) |\n\n*Note: Asterisk-specific metrics require asterisk_exporter to be installed*"
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}
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},
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{
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"title": "CPU Usage",
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"type": "timeseries",
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"gridPos": {"h": 8, "w": 12, "x": 0, "y": 4},
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"targets": [
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{
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"expr": "100 - (avg(irate(node_cpu_seconds_total{job=\"voip-nodes\", instance=\"pbx-1\", mode=\"idle\"}[5m])) * 100)",
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"legendFormat": "CPU %",
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"refId": "A"
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}
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],
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"fieldConfig": {"defaults": {"unit": "percent", "min": 0, "max": 100}},
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "Memory Usage",
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"type": "timeseries",
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"gridPos": {"h": 8, "w": 12, "x": 12, "y": 4},
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"targets": [
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{
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"expr": "node_memory_MemTotal_bytes{job=\"voip-nodes\", instance=\"pbx-1\"} - node_memory_MemAvailable_bytes{job=\"voip-nodes\", instance=\"pbx-1\"}",
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"legendFormat": "Used",
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"refId": "A"
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},
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{
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"expr": "node_memory_MemAvailable_bytes{job=\"voip-nodes\", instance=\"pbx-1\"}",
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"legendFormat": "Available",
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"refId": "B"
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}
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],
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"fieldConfig": {"defaults": {"unit": "bytes"}},
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "Network I/O",
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"type": "timeseries",
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"gridPos": {"h": 8, "w": 12, "x": 0, "y": 12},
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"targets": [
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{
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"expr": "rate(node_network_receive_bytes_total{job=\"voip-nodes\", instance=\"pbx-1\", device=\"lima0\"}[5m])",
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"legendFormat": "RX",
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"refId": "A"
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},
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{
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"expr": "rate(node_network_transmit_bytes_total{job=\"voip-nodes\", instance=\"pbx-1\", device=\"lima0\"}[5m])",
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"legendFormat": "TX",
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"refId": "B"
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}
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],
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"fieldConfig": {"defaults": {"unit": "Bps"}},
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "Disk I/O (Recording Storage)",
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"type": "timeseries",
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"gridPos": {"h": 8, "w": 12, "x": 12, "y": 12},
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"targets": [
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{
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"expr": "rate(node_disk_read_bytes_total{job=\"voip-nodes\", instance=\"pbx-1\"}[5m])",
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"legendFormat": "Read",
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"refId": "A"
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},
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{
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"expr": "rate(node_disk_written_bytes_total{job=\"voip-nodes\", instance=\"pbx-1\"}[5m])",
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"legendFormat": "Write",
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"refId": "B"
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}
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],
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"fieldConfig": {"defaults": {"unit": "Bps"}},
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "Disk Usage",
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"type": "gauge",
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"gridPos": {"h": 6, "w": 8, "x": 0, "y": 20},
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"targets": [
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{
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"expr": "(1 - (node_filesystem_avail_bytes{job=\"voip-nodes\", instance=\"pbx-1\", mountpoint=\"/\"} / node_filesystem_size_bytes{job=\"voip-nodes\", instance=\"pbx-1\", mountpoint=\"/\"})) * 100",
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"legendFormat": "Root",
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"refId": "A"
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}
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],
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"fieldConfig": {
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"defaults": {
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"unit": "percent",
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"min": 0,
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"max": 100,
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"thresholds": {"mode": "absolute", "steps": [{"color": "green", "value": 0}, {"color": "yellow", "value": 70}, {"color": "red", "value": 85}]}
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}
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},
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "Process Count",
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"type": "stat",
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"gridPos": {"h": 6, "w": 8, "x": 8, "y": 20},
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"targets": [
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{
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"expr": "node_procs_running{job=\"voip-nodes\", instance=\"pbx-1\"}",
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"legendFormat": "Running",
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"refId": "A"
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},
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{
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"expr": "node_procs_blocked{job=\"voip-nodes\", instance=\"pbx-1\"}",
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"legendFormat": "Blocked",
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"refId": "B"
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}
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],
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"options": {"colorMode": "value", "graphMode": "area"},
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "File Descriptors",
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"type": "timeseries",
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"gridPos": {"h": 6, "w": 8, "x": 16, "y": 20},
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"targets": [
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{
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"expr": "node_filefd_allocated{job=\"voip-nodes\", instance=\"pbx-1\"}",
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"legendFormat": "Allocated",
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"refId": "A"
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},
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{
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"expr": "node_filefd_maximum{job=\"voip-nodes\", instance=\"pbx-1\"}",
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"legendFormat": "Maximum",
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"refId": "B"
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}
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],
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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}
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]
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}

‎configs/grafana/dashboards/opensips-overview.json‎

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{
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"title": "OpenSIPS Overview",
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"uid": "opensips-overview",
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"tags": ["voip", "opensips", "sip", "proxy"],
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"refresh": "30s",
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"time": {
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"from": "now-1h",
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"to": "now"
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},
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"panels": [
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{
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"title": "OpenSIPS VM Status",
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"type": "stat",
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"gridPos": {"h": 4, "w": 6, "x": 0, "y": 0},
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"targets": [
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{
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"expr": "up{job=\"voip-nodes\", instance=\"sip-1\"}",
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"legendFormat": "sip-1",
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"refId": "A"
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}
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],
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"fieldConfig": {
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"defaults": {
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"mappings": [{"type": "value", "options": {"0": {"text": "DOWN", "color": "red"}, "1": {"text": "UP", "color": "green"}}}],
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"thresholds": {"mode": "absolute", "steps": [{"color": "red", "value": 0}, {"color": "green", "value": 1}]}
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}
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},
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"options": {"colorMode": "background", "graphMode": "none"},
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "OpenSIPS Info",
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"type": "text",
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"gridPos": {"h": 4, "w": 18, "x": 6, "y": 0},
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"options": {
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"mode": "markdown",
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"content": "## OpenSIPS SIP Proxy (sip-1)\n\n**Role:** SIP registration, routing, load balancing\n\n| Port | Protocol | Purpose |\n|------|----------|--------|\n| 5060 | UDP/TCP | SIP Signaling |\n| 5061 | TCP | SIP/TLS |\n| 8080 | TCP | WebSocket |\n| 8443 | TCP | WebSocket Secure |\n\n*Note: OpenSIPS-specific metrics require opensips_exporter to be installed*"
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}
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},
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{
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"title": "CPU Usage",
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"type": "timeseries",
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"gridPos": {"h": 8, "w": 12, "x": 0, "y": 4},
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"targets": [
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{
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"expr": "100 - (avg(irate(node_cpu_seconds_total{job=\"voip-nodes\", instance=\"sip-1\", mode=\"idle\"}[5m])) * 100)",
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"legendFormat": "CPU %",
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"refId": "A"
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}
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],
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"fieldConfig": {"defaults": {"unit": "percent", "min": 0, "max": 100, "color": {"mode": "palette-classic"}}},
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "Memory Usage",
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"type": "timeseries",
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"gridPos": {"h": 8, "w": 12, "x": 12, "y": 4},
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"targets": [
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{
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"expr": "node_memory_MemTotal_bytes{job=\"voip-nodes\", instance=\"sip-1\"} - node_memory_MemAvailable_bytes{job=\"voip-nodes\", instance=\"sip-1\"}",
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"legendFormat": "Used",
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"refId": "A"
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},
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{
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"expr": "node_memory_MemAvailable_bytes{job=\"voip-nodes\", instance=\"sip-1\"}",
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"legendFormat": "Available",
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"refId": "B"
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}
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],
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"fieldConfig": {"defaults": {"unit": "bytes"}},
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "Network I/O",
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"type": "timeseries",
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"gridPos": {"h": 8, "w": 12, "x": 0, "y": 12},
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"targets": [
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{
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"expr": "rate(node_network_receive_bytes_total{job=\"voip-nodes\", instance=\"sip-1\", device=\"lima0\"}[5m])",
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"legendFormat": "RX",
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"refId": "A"
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},
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{
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"expr": "rate(node_network_transmit_bytes_total{job=\"voip-nodes\", instance=\"sip-1\", device=\"lima0\"}[5m])",
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"legendFormat": "TX",
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"refId": "B"
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}
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],
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"fieldConfig": {"defaults": {"unit": "Bps"}},
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "Network Packets",
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"type": "timeseries",
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"gridPos": {"h": 8, "w": 12, "x": 12, "y": 12},
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"targets": [
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{
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"expr": "rate(node_network_receive_packets_total{job=\"voip-nodes\", instance=\"sip-1\", device=\"lima0\"}[5m])",
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"legendFormat": "RX Packets",
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"refId": "A"
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},
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{
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"expr": "rate(node_network_transmit_packets_total{job=\"voip-nodes\", instance=\"sip-1\", device=\"lima0\"}[5m])",
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"legendFormat": "TX Packets",
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"refId": "B"
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}
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],
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"fieldConfig": {"defaults": {"unit": "pps"}},
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "UDP Connections (SIP Traffic Indicator)",
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"type": "timeseries",
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"gridPos": {"h": 8, "w": 12, "x": 0, "y": 20},
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"targets": [
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{
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"expr": "node_sockstat_UDP_inuse{job=\"voip-nodes\", instance=\"sip-1\"}",
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"legendFormat": "UDP Sockets",
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"refId": "A"
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}
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],
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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},
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{
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"title": "TCP Connections",
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"type": "timeseries",
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"gridPos": {"h": 8, "w": 12, "x": 12, "y": 20},
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"targets": [
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{
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"expr": "node_sockstat_TCP_inuse{job=\"voip-nodes\", instance=\"sip-1\"}",
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"legendFormat": "TCP Established",
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"refId": "A"
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},
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{
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"expr": "node_sockstat_TCP_tw{job=\"voip-nodes\", instance=\"sip-1\"}",
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"legendFormat": "TCP Time-Wait",
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"refId": "B"
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}
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],
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"datasource": {"type": "prometheus", "uid": "Prometheus"}
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}
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]
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}

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