Monitor host metrics (CPU, memory, disk, processes) via New Relic Infrastructure.
List Hosts
newrelic entity search --name "" --type HOST | \
jq '.[] | {name, alertSeverity, guid}'
CPU Usage
# Average CPU per host (last hour)
newrelic nrql query --accountId $NEW_RELIC_ACCOUNT_ID --query "
SELECT average(cpuPercent)
FROM SystemSample
FACET hostname
TIMESERIES 5 minutes
SINCE 1 hour ago
"
# CPU spikes > 80%
newrelic nrql query --accountId $NEW_RELIC_ACCOUNT_ID --query "
SELECT percentage(count(*), WHERE cpuPercent > 80) AS 'Time > 80% CPU'
FROM SystemSample
FACET hostname
SINCE 1 hour ago
"
Memory Usage
newrelic nrql query --accountId $NEW_RELIC_ACCOUNT_ID --query "
SELECT average(memoryUsedPercent), average(memoryFreeBytes / 1e9) AS 'Free GB'
FROM SystemSample
FACET hostname
TIMESERIES 5 minutes
SINCE 1 hour ago
"
Disk Usage
newrelic nrql query --accountId $NEW_RELIC_ACCOUNT_ID --query "
SELECT latest(diskUsedPercent)
FROM StorageSample
FACET hostname, mountPoint
SINCE 10 minutes ago
"
Network I/O
newrelic nrql query --accountId $NEW_RELIC_ACCOUNT_ID --query "
SELECT average(receiveBytesPerSecond), average(transmitBytesPerSecond)
FROM NetworkSample
FACET hostname
TIMESERIES 5 minutes
SINCE 1 hour ago
"
Top Processes by CPU
newrelic nrql query --accountId $NEW_RELIC_ACCOUNT_ID --query "
SELECT average(cpuPercent)
FROM ProcessSample
WHERE hostname = 'my-host'
FACET processDisplayName
SINCE 30 minutes ago
LIMIT 10
ORDER BY average(cpuPercent) DESC
"
Top Processes by Memory
newrelic nrql query --accountId $NEW_RELIC_ACCOUNT_ID --query "
SELECT average(memoryResidentSizeBytes) / 1e6 AS 'RSS MB'
FROM ProcessSample
WHERE hostname = 'my-host'
FACET processDisplayName
SINCE 30 minutes ago
LIMIT 10
ORDER BY average(memoryResidentSizeBytes) DESC
"
Correlate Host Load with App Performance
# Side-by-side: host CPU vs app response time
newrelic nrql query --accountId $NEW_RELIC_ACCOUNT_ID --query "
SELECT average(cpuPercent) AS 'CPU %'
FROM SystemSample
WHERE hostname = 'my-host'
TIMESERIES 5 minutes
SINCE 1 hour ago
"
newrelic nrql query --accountId $NEW_RELIC_ACCOUNT_ID --query "
SELECT average(duration) AS 'Avg Response (s)'
FROM Transaction
WHERE appName = 'my-app'
TIMESERIES 5 minutes
SINCE 1 hour ago
"
# Compare the two time series to see if CPU pressure correlates with slowdowns
Host Reporting Status
newrelic entity search --name "" --type HOST | \
jq '.[] | {name, reporting}'