Move over Graphite, Prometheus is here - Longhorn PHP

@mheap
#longhornphp
Move over Graphite
Prometheus is here

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@mheap
#longhornphp
Metrics?

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@mheap
#longhornphp
How much disk space are we using?
What’s the average CPU utilisation?

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@mheap
#longhornphp
How many 500 errors in the last 5 minutes?
Is our data processing rate better, worse, or the same as
this time last week?
How many concurrent users do we have?

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@mheap
#longhornphp
How many active phone calls are there?
What’s the average call duration?
How many calls have there been to 441234567890
today?

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@mheap
#longhornphp

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@mheap
#longhornphp
call.ringing

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@mheap
#longhornphp
call.447700900000.ringing

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@mheap
#longhornphp
ded2585.call.447700900000.ringing

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@mheap
#longhornphp
ded2585.call.447700900000.ringing
ded2585.call.447700900000.answered
ded2585.call.447700900000.complete

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@mheap
#longhornphp
ded2585.call.*.placed

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@mheap
#longhornphp
*.call.*.placed

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@mheap
#longhornphp
*.call.447700900000.placed

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@mheap
#longhornphp

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@mheap
#longhornphp
Hello, I’m Michael

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#longhornphp
@mheap

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@mheap
#longhornphp

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@mheap
#longhornphp
Open Source

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#longhornphp
Mostly Go
(A little Ruby)

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@mheap
#longhornphp
Cloud Native
Computing Foundation

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@mheap
#brightonphp

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@mheap
#longhornphp

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@mheap
#longhornphp
How does it work?

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@mheap
#longhornphp
Pulls metrics

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#longhornphp
Disk storage

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#longhornphp
Efficient collection

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#longhornphp
Consul integration

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#longhornphp
Prometheus.yml

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@mheap
#longhornphp
# HELP node_filesystem_free_bytes Filesystem free space in bytes.
# TYPE node_filesystem_free_bytes gauge
node_filesystem_free_bytes{device="/dev/disk1s1",fstype="apfs",mountpoint="/
Volumes/Macintosh HD"} 4.9138515968e+10
node_filesystem_free_bytes{device="/dev/disk2s1",fstype="apfs",mountpoint="/"}
3.62441240576e+11
node_filesystem_free_bytes{device="/dev/disk2s4",fstype="apfs",mountpoint="/
private/var/vm"} 4.36741931008e+11

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@mheap
#longhornphp

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@mheap
#longhornphp
node_filesystem_free_bytes{
device="/dev/disk1s1",
fstype="apfs",
mountpoint="/Volumes/Macintosh HD"
}
4.9138515968e+10

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@mheap
#longhornphp
node_filesystem_free_bytes
billing_notifications_total
process_cpu_seconds_total
http_request_duration_seconds

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@mheap
#longhornphp
node_filesystem_free_bytes{
device="/dev/disk1s1",
fstype="apfs",
mountpoint="/Volumes/Macintosh HD"
}
4.9138515968e+10

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@mheap
#longhornphp
# HELP go_gc_duration_seconds A summary of the GC invocation durations.
# TYPE go_gc_duration_seconds summary
go_gc_duration_seconds{quantile="0"} 0
go_gc_duration_seconds{quantile="0.25"} 0
go_gc_duration_seconds{quantile="1"} 0
go_gc_duration_seconds_sum 0
go_gc_duration_seconds_count 0
# HELP go_goroutines Number of goroutines that currently exist.
# TYPE go_goroutines gauge
go_goroutines 6
# HELP go_info Information about the Go environment.
# TYPE go_info gauge
go_info{version="go1.10"} 1
# HELP go_memstats_alloc_bytes Number of bytes allocated and still in use.
# TYPE go_memstats_alloc_bytes gauge
go_memstats_alloc_bytes 827952
# HELP go_memstats_alloc_bytes_total Total number of bytes allocated, even if freed.
# TYPE go_memstats_alloc_bytes_total counter
go_memstats_alloc_bytes_total 827952
# HELP go_memstats_buck_hash_sys_bytes Number of bytes used by the profiling bucket hash table.
# TYPE go_memstats_buck_hash_sys_bytes gauge
go_memstats_buck_hash_sys_bytes 1.443286e+06
# HELP go_memstats_frees_total Total number of frees.
# TYPE go_memstats_frees_total counter
go_memstats_frees_total 243
# HELP go_memstats_gc_cpu_fraction The fraction of this program's available CPU time used by the GC since the program started.
# TYPE go_memstats_gc_cpu_fraction gauge
go_memstats_gc_cpu_fraction 0
# HELP go_memstats_gc_sys_bytes Number of bytes used for garbage collection system metadata.
# TYPE go_memstats_gc_sys_bytes gauge
go_memstats_gc_sys_bytes 169984
# HELP go_memstats_heap_alloc_bytes Number of heap bytes allocated and still in use.
# TYPE go_memstats_heap_alloc_bytes gauge
go_memstats_heap_alloc_bytes 827952
# HELP go_memstats_heap_idle_bytes Number of heap bytes waiting to be used.
# TYPE go_memstats_heap_idle_bytes gauge
go_memstats_heap_idle_bytes 761856
# HELP go_memstats_heap_inuse_bytes Number of heap bytes that are in use.
# TYPE go_memstats_heap_inuse_bytes gauge
go_memstats_heap_inuse_bytes 1.990656e+06
# HELP go_memstats_heap_objects Number of allocated objects.
# TYPE go_memstats_heap_objects gauge
go_memstats_heap_objects 7710
# HELP go_memstats_heap_released_bytes Number of heap bytes released to OS.
# TYPE go_memstats_heap_released_bytes gauge
go_memstats_heap_released_bytes 0
# HELP go_memstats_heap_sys_bytes Number of heap bytes obtained from system.
# TYPE go_memstats_heap_sys_bytes gauge
go_memstats_heap_sys_bytes 2.752512e+06
# HELP go_memstats_last_gc_time_seconds Number of seconds since 1970 of last garbage collection.
# TYPE go_memstats_last_gc_time_seconds gauge
go_memstats_last_gc_time_seconds 0
# HELP go_memstats_lookups_total Total number of pointer lookups.
# TYPE go_memstats_lookups_total counter
go_memstats_lookups_total 5
# HELP go_memstats_mallocs_total Total number of mallocs.
# TYPE go_memstats_mallocs_total counter
go_memstats_mallocs_total 7953
# HELP go_memstats_mcache_inuse_bytes Number of bytes in use by mcache structures.
# TYPE go_memstats_mcache_inuse_bytes gauge
go_memstats_mcache_inuse_bytes 6944
# HELP go_memstats_mcache_sys_bytes Number of bytes used for mcache structures obtained from system.
# TYPE go_memstats_mcache_sys_bytes gauge
go_memstats_mcache_sys_bytes 16384
# HELP go_memstats_mspan_inuse_bytes Number of bytes in use by mspan structures.
# TYPE go_memstats_mspan_inuse_bytes gauge
go_memstats_mspan_inuse_bytes 30096
# HELP go_memstats_mspan_sys_bytes Number of bytes used for mspan structures obtained from system.
# TYPE go_memstats_mspan_sys_bytes gauge
go_memstats_mspan_sys_bytes 32768
# HELP go_memstats_next_gc_bytes Number of heap bytes when next garbage collection will take place.
# TYPE go_memstats_next_gc_bytes gauge
go_memstats_next_gc_bytes 4.473924e+06
# HELP go_memstats_other_sys_bytes Number of bytes used for other system allocations.
# TYPE go_memstats_other_sys_bytes gauge
go_memstats_other_sys_bytes 1.059618e+06
# HELP go_memstats_stack_inuse_bytes Number of bytes in use by the stack allocator.
# TYPE go_memstats_stack_inuse_bytes gauge
go_memstats_stack_inuse_bytes 393216
# HELP go_memstats_stack_sys_bytes Number of bytes obtained from system for stack allocator.
# TYPE go_memstats_stack_sys_bytes gauge
go_memstats_stack_sys_bytes 393216
# HELP go_memstats_sys_bytes Number of bytes obtained from system.
# TYPE go_memstats_sys_bytes gauge
go_memstats_sys_bytes 5.867768e+06
# HELP go_threads Number of OS threads created.
# TYPE go_threads gauge
go_threads 7
# HELP node_cpu_seconds_total Seconds the cpus spent in each mode.
# TYPE node_cpu_seconds_total counter
node_cpu_seconds_total{cpu="0",mode="idle"} 537140.75
node_cpu_seconds_total{cpu="0",mode="nice"} 0
node_cpu_seconds_total{cpu="0",mode="system"} 202810.13
node_cpu_seconds_total{cpu="0",mode="user"} 236956.35
# HELP node_disk_read_bytes_total The total number of bytes read successfully.
# TYPE node_disk_read_bytes_total counter
node_disk_read_bytes_total{device="disk0"} 6.22708862976e+11
node_disk_read_bytes_total{device="disk3"} 1.12842752e+08
# HELP node_disk_read_seconds_total The total number of seconds spent by all reads.
# TYPE node_disk_read_seconds_total counter
node_disk_read_seconds_total{device="disk0"} 22165.627411002
node_disk_read_seconds_total{device="disk3"} 67.88703918
# HELP node_disk_read_sectors_total The total number of sectors read successfully.
# TYPE node_disk_read_sectors_total counter
node_disk_read_sectors_total{device="disk0"} 4327.06494140625
node_disk_read_sectors_total{device="disk3"} 7.34765625
# HELP node_disk_reads_completed_total The total number of reads completed successfully.
# TYPE node_disk_reads_completed_total counter
node_disk_reads_completed_total{device="disk0"} 1.7723658e+07
node_disk_reads_completed_total{device="disk3"} 3762
# HELP node_disk_write_seconds_total This is the total number of seconds spent by all writes.
# TYPE node_disk_write_seconds_total counter
node_disk_write_seconds_total{device="disk0"} 8632.255762983
node_disk_write_seconds_total{device="disk3"} 0
# HELP node_disk_writes_completed_total The total number of writes completed successfully.
# TYPE node_disk_writes_completed_total counter
node_disk_writes_completed_total{device="disk0"} 1.9779856e+07
node_disk_writes_completed_total{device="disk3"} 0
# HELP node_disk_written_bytes_total The total number of bytes written successfully.
# TYPE node_disk_written_bytes_total counter
node_disk_written_bytes_total{device="disk0"} 6.94838308864e+11
node_disk_written_bytes_total{device="disk3"} 0
# HELP node_disk_written_sectors_total The total number of sectors written successfully.
# TYPE node_disk_written_sectors_total counter
node_disk_written_sectors_total{device="disk0"} 4829.06640625
node_disk_written_sectors_total{device="disk3"} 0
# HELP node_exporter_build_info A metric with a constant '1' value labeled by version, revision, branch, and goversion from which node_exporter was built.
# TYPE node_exporter_build_info gauge
node_exporter_build_info{branch="HEAD",goversion="go1.10",revision="002c1ca02917406cbecc457162e2bdb1f29c2f49",version="0.16.0-rc.0"} 1
# HELP node_filesystem_avail_bytes Filesystem space available to non-root users in bytes.
# TYPE node_filesystem_avail_bytes gauge
node_filesystem_avail_bytes{device="/dev/disk1s1",fstype="apfs",mountpoint="/Volumes/Macintosh HD"} 4.7416078336e+10
node_filesystem_avail_bytes{device="/dev/disk2s1",fstype="apfs",mountpoint="/"} 3.58532878336e+11
node_filesystem_avail_bytes{device="/dev/disk2s4",fstype="apfs",mountpoint="/private/var/vm"} 3.58565429248e+11
node_filesystem_avail_bytes{device="/dev/disk3s2",fstype="hfs",mountpoint="/Volumes/Deckset"} 2.322432e+07
node_filesystem_avail_bytes{device="map -hosts",fstype="autofs",mountpoint="/net"} 0
node_filesystem_avail_bytes{device="map auto_home",fstype="autofs",mountpoint="/home"} 0
# HELP node_filesystem_device_error Whether an error occurred while getting statistics for the given device.
# TYPE node_filesystem_device_error gauge
node_filesystem_device_error{device="/dev/disk1s1",fstype="apfs",mountpoint="/Volumes/Macintosh HD"} 0
node_filesystem_device_error{device="/dev/disk2s1",fstype="apfs",mountpoint="/"} 0
node_filesystem_device_error{device="/dev/disk2s4",fstype="apfs",mountpoint="/private/var/vm"} 0
node_filesystem_device_error{device="/dev/disk3s2",fstype="hfs",mountpoint="/Volumes/Deckset"} 0
node_filesystem_device_error{device="map -hosts",fstype="autofs",mountpoint="/net"} 0
node_filesystem_device_error{device="map auto_home",fstype="autofs",mountpoint="/home"} 0
# HELP node_filesystem_files Filesystem total file nodes.
# TYPE node_filesystem_files gauge
node_filesystem_files{device="/dev/disk1s1",fstype="apfs",mountpoint="/Volumes/Macintosh HD"} 9.223372036854776e+18
node_filesystem_files{device="/dev/disk2s1",fstype="apfs",mountpoint="/"} 9.223372036854776e+18
node_filesystem_files{device="/dev/disk2s4",fstype="apfs",mountpoint="/private/var/vm"} 9.223372036854776e+18
node_filesystem_files{device="/dev/disk3s2",fstype="hfs",mountpoint="/Volumes/Deckset"} 4.294967279e+09
node_filesystem_files{device="map -hosts",fstype="autofs",mountpoint="/net"} 0
node_filesystem_files{device="map auto_home",fstype="autofs",mountpoint="/home"} 0
# HELP node_filesystem_files_free Filesystem total free file nodes.
# TYPE node_filesystem_files_free gauge
node_filesystem_files_free{device="/dev/disk1s1",fstype="apfs",mountpoint="/Volumes/Macintosh HD"} 9.223372036854352e+18
node_filesystem_files_free{device="/dev/disk2s1",fstype="apfs",mountpoint="/"} 9.223372036853541e+18
node_filesystem_files_free{device="/dev/disk2s4",fstype="apfs",mountpoint="/private/var/vm"} 9.223372036854776e+18
node_filesystem_files_free{device="/dev/disk3s2",fstype="hfs",mountpoint="/Volumes/Deckset"} 4.294964965e+09
node_filesystem_files_free{device="map -hosts",fstype="autofs",mountpoint="/net"} 0
node_filesystem_files_free{device="map auto_home",fstype="autofs",mountpoint="/home"} 0
# TYPE node_filesystem_free_bytes gauge
node_filesystem_free_bytes{device="/dev/disk1s1",fstype="apfs",mountpoint="/Volumes/Macintosh HD"} 4.9138515968e+10
node_filesystem_free_bytes{device="/dev/disk2s1",fstype="apfs",mountpoint="/"} 3.62441240576e+11
node_filesystem_free_bytes{device="/dev/disk2s4",fstype="apfs",mountpoint="/private/var/vm"} 4.36741931008e+11
node_filesystem_free_bytes{device="/dev/disk3s2",fstype="hfs",mountpoint="/Volumes/Deckset"} 2.322432e+07
node_filesystem_free_bytes{device="map -hosts",fstype="autofs",mountpoint="/net"} 0
node_filesystem_free_bytes{device="map auto_home",fstype="autofs",mountpoint="/home"} 0
# HELP node_filesystem_readonly Filesystem read-only status.
# TYPE node_filesystem_readonly gauge
node_filesystem_readonly{device="/dev/disk1s1",fstype="apfs",mountpoint="/Volumes/Macintosh HD"} 0
node_filesystem_readonly{device="/dev/disk2s1",fstype="apfs",mountpoint="/"} 0
node_filesystem_readonly{device="/dev/disk2s4",fstype="apfs",mountpoint="/private/var/vm"} 0
node_filesystem_readonly{device="/dev/disk3s2",fstype="hfs",mountpoint="/Volumes/Deckset"} 1
node_filesystem_readonly{device="map -hosts",fstype="autofs",mountpoint="/net"} 0
node_filesystem_readonly{device="map auto_home",fstype="autofs",mountpoint="/home"} 0
# HELP node_filesystem_size_bytes Filesystem size in bytes.
# TYPE node_filesystem_size_bytes gauge
node_filesystem_size_bytes{device="/dev/disk1s1",fstype="apfs",mountpoint="/Volumes/Macintosh HD"} 5.9999997952e+10
node_filesystem_size_bytes{device="/dev/disk2s1",fstype="apfs",mountpoint="/"} 4.3996317696e+11
node_filesystem_size_bytes{device="/dev/disk2s4",fstype="apfs",mountpoint="/private/var/vm"} 4.3996317696e+11
node_filesystem_size_bytes{device="/dev/disk3s2",fstype="hfs",mountpoint="/Volumes/Deckset"} 1.3418496e+08
node_filesystem_size_bytes{device="map -hosts",fstype="autofs",mountpoint="/net"} 0
node_filesystem_size_bytes{device="map auto_home",fstype="autofs",mountpoint="/home"} 0
# HELP node_load1 1m load average.
# TYPE node_load1 gauge
node_load1 2.451171875
node_load15 2.7646484375
node_load5 2.6083984375
# HELP node_memory_active_bytes_total Memory information field active_bytes_total.
# TYPE node_memory_active_bytes_total gauge
node_memory_active_bytes_total 3.251331072e+09
# HELP node_memory_bytes_total Memory information field bytes_total.
# TYPE node_memory_bytes_total gauge
node_memory_bytes_total 1.7179869184e+10
# HELP node_memory_free_bytes_total Memory information field free_bytes_total.
# TYPE node_memory_free_bytes_total gauge
node_memory_free_bytes_total 5.61926144e+08
# HELP node_memory_inactive_bytes_total Memory information field inactive_bytes_total.
# TYPE node_memory_inactive_bytes_total gauge
node_memory_inactive_bytes_total 3.997949952e+09
# HELP node_memory_swapped_in_pages_total Memory information field swapped_in_pages_total.
# TYPE node_memory_swapped_in_pages_total gauge
node_memory_swapped_in_pages_total 2.51926528e+09
# HELP node_memory_swapped_out_pages_total Memory information field swapped_out_pages_total.
# TYPE node_memory_swapped_out_pages_total gauge
node_memory_swapped_out_pages_total 3.131211776e+09
# HELP node_memory_wired_bytes_total Memory information field wired_bytes_total.
# TYPE node_memory_wired_bytes_total gauge
node_memory_wired_bytes_total 3.211726848e+09
# HELP node_network_receive_bytes_total Network device statistic receive_bytes.
# TYPE node_network_receive_bytes_total counter
node_network_receive_bytes_total{device="XHC0"} 0
node_network_receive_bytes_total{device="awdl0"} 5120
node_network_receive_bytes_total{device="bridge0"} 0
node_network_receive_bytes_total{device="en0"} 1.214772224e+09
node_network_receive_bytes_total{device="en1"} 0
node_network_receive_bytes_total{device="en5"} 1.000448e+06
node_network_receive_bytes_total{device="gif0"} 0
node_network_receive_bytes_total{device="lo0"} 2.01657344e+09
node_network_receive_bytes_total{device="p2p0"} 0
node_network_receive_bytes_total{device="stf0"} 0
node_network_receive_bytes_total{device="utun0"} 0
node_network_receive_bytes_total{device="vboxnet0"} 1.631232e+06
# HELP node_network_receive_errs_total Network device statistic receive_errs.
# TYPE node_network_receive_errs_total counter
node_network_receive_errs_total{device="XHC0"} 0
node_network_receive_errs_total{device="awdl0"} 0
node_network_receive_errs_total{device="bridge0"} 0
node_network_receive_errs_total{device="en0"} 0
node_network_receive_errs_total{device="gif0"} 0
node_network_receive_errs_total{device="lo0"} 0
node_network_receive_errs_total{device="p2p0"} 0
node_network_receive_errs_total{device="stf0"} 0
node_network_receive_errs_total{device="utun0"} 0
node_network_receive_errs_total{device="vboxnet0"} 0
# HELP node_network_receive_multicast_total Network device statistic receive_multicast.
# TYPE node_network_receive_multicast_total counter
node_network_receive_multicast_total{device="XHC0"} 0
node_network_receive_multicast_total{device="awdl0"} 33
node_network_receive_multicast_total{device="bridge0"} 0
node_network_receive_multicast_total{device="en0"} 5.331321e+06
node_network_receive_multicast_total{device="en1"} 0
node_network_receive_multicast_total{device="gif0"} 0
node_network_receive_multicast_total{device="lo0"} 266605
node_network_receive_multicast_total{device="p2p0"} 0
node_network_receive_multicast_total{device="stf0"} 0
node_network_receive_multicast_total{device="utun0"} 0
node_network_receive_multicast_total{device="vboxnet0"} 98
# HELP node_network_receive_packets_total Network device statistic receive_packets.
# TYPE node_network_receive_packets_total counter
node_network_receive_packets_total{device="XHC0"} 0
node_network_receive_packets_total{device="awdl0"} 42
node_network_receive_packets_total{device="bridge0"} 0
node_network_receive_packets_total{device="en0"} 5.6394197e+07
node_network_receive_packets_total{device="en1"} 0
node_network_receive_packets_total{device="gif0"} 0
node_network_receive_packets_total{device="lo0"} 3.243677e+06
node_network_receive_packets_total{device="p2p0"} 0
node_network_receive_packets_total{device="stf0"} 0
node_network_receive_packets_total{device="utun0"} 0
node_network_receive_packets_total{device="vboxnet0"} 1533
# HELP node_network_transmit_bytes_total Network device statistic transmit_bytes.
# TYPE node_network_transmit_bytes_total counter
node_network_transmit_bytes_total{device="XHC0"} 0
node_network_transmit_bytes_total{device="awdl0"} 1.50016e+06
node_network_transmit_bytes_total{device="bridge0"} 0
node_network_transmit_bytes_total{device="en0"} 2.575358976e+09
node_network_transmit_bytes_total{device="en1"} 0
node_network_transmit_bytes_total{device="gif0"} 0
node_network_transmit_bytes_total{device="lo0"} 2.01657344e+09
node_network_transmit_bytes_total{device="p2p0"} 0
node_network_transmit_bytes_total{device="stf0"} 0
node_network_transmit_bytes_total{device="utun0"} 0
node_network_transmit_bytes_total{device="vboxnet0"} 1.695744e+06
# HELP node_network_transmit_errs_total Network device statistic transmit_errs.
# TYPE node_network_transmit_errs_total counter
node_network_transmit_errs_total{device="XHC0"} 0
node_network_transmit_errs_total{device="awdl0"} 0
node_network_transmit_errs_total{device="bridge0"} 0
node_network_transmit_errs_total{device="en0"} 0
node_network_transmit_errs_total{device="gif0"} 0
node_network_transmit_errs_total{device="lo0"} 0
node_network_transmit_errs_total{device="p2p0"} 0
node_network_transmit_errs_total{device="stf0"} 0
node_network_transmit_errs_total{device="utun0"} 0
node_network_transmit_errs_total{device="vboxnet0"} 0
# HELP node_network_transmit_multicast_total Network device statistic transmit_multicast.
# TYPE node_network_transmit_multicast_total counter
node_network_transmit_multicast_total{device="XHC0"} 0
node_network_transmit_multicast_total{device="awdl0"} 0
node_network_transmit_multicast_total{device="bridge0"} 0
node_network_transmit_multicast_total{device="en0"} 0
node_network_transmit_multicast_total{device="gif0"} 0
node_network_transmit_multicast_total{device="lo0"} 0
node_network_transmit_multicast_total{device="p2p0"} 0
node_network_transmit_multicast_total{device="stf0"} 0
node_network_transmit_multicast_total{device="utun0"} 0
node_network_transmit_multicast_total{device="vboxnet0"} 0
# HELP node_network_transmit_packets_total Network device statistic transmit_packets.
# TYPE node_network_transmit_packets_total counter
node_network_transmit_packets_total{device="XHC0"} 0
node_network_transmit_packets_total{device="awdl0"} 6691
node_network_transmit_packets_total{device="bridge0"} 1
node_network_transmit_packets_total{device="en0"} 3.2582836e+07
node_network_transmit_packets_total{device="en1"} 0
node_network_transmit_packets_total{device="gif0"} 0
node_network_transmit_packets_total{device="lo0"} 3.243677e+06
node_network_transmit_packets_total{device="p2p0"} 0
node_network_transmit_packets_total{device="stf0"} 0
node_network_transmit_packets_total{device="utun0"} 2
node_network_transmit_packets_total{device="vboxnet0"} 73766
# HELP node_scrape_collector_duration_seconds node_exporter: Duration of a collector scrape.
# TYPE node_scrape_collector_duration_seconds gauge
node_scrape_collector_duration_seconds{collector="cpu"} 0.00013298
node_scrape_collector_duration_seconds{collector="diskstats"} 0.000803364
node_scrape_collector_duration_seconds{collector="filesystem"} 0.000119007
node_scrape_collector_duration_seconds{collector="loadavg"} 2.3448e-05
node_scrape_collector_duration_seconds{collector="meminfo"} 5.3036e-05
node_scrape_collector_duration_seconds{collector="netdev"} 0.000338404
node_scrape_collector_duration_seconds{collector="textfile"} 1.7727e-05
node_scrape_collector_duration_seconds{collector="time"} 2.8571e-05
# HELP node_scrape_collector_success node_exporter: Whether a collector succeeded.
# TYPE node_scrape_collector_success gauge
node_scrape_collector_success{collector="cpu"} 1
node_scrape_collector_success{collector="diskstats"} 1
node_scrape_collector_success{collector="filesystem"} 1
node_scrape_collector_success{collector="loadavg"} 1
node_scrape_collector_success{collector="meminfo"} 1
node_scrape_collector_success{collector="netdev"} 1
node_scrape_collector_success{collector="textfile"} 1
node_scrape_collector_success{collector="time"} 1
# HELP node_textfile_scrape_error 1 if there was an error opening or reading a file, 0 otherwise
# TYPE node_textfile_scrape_error gauge
node_textfile_scrape_error 0
# HELP node_time_seconds System time in seconds since epoch (1970).
# TYPE node_time_seconds gauge
node_time_seconds 1.5210412225783854e+09
# HELP promhttp_metric_handler_requests_in_flight Current number of scrapes being served.
# TYPE promhttp_metric_handler_requests_in_flight gauge
promhttp_metric_handler_requests_in_flight 1
# HELP promhttp_metric_handler_requests_total Total number of scrapes by HTTP status code.
# TYPE promhttp_metric_handler_requests_total counter
promhttp_metric_handler_requests_total{code="200"} 0

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@mheap
#longhornphp
# HELP node_filesystem_readonly Filesystem read-only status.
# TYPE node_filesystem_readonly gauge
node_filesystem_readonly{device="/dev/disk1s1",fstype="apfs",mountpoint="/Volumes/Macintosh HD"} 0
node_filesystem_readonly{device="/dev/disk2s1",fstype="apfs",mountpoint="/"} 0
node_filesystem_readonly{device="/dev/disk2s4",fstype="apfs",mountpoint="/private/var/vm"} 0
node_filesystem_readonly{device="map -hosts",fstype="autofs",mountpoint="/net"} 0
node_filesystem_readonly{device="map auto_home",fstype="autofs",mountpoint="/home"} 0
# HELP node_filesystem_size_bytes Filesystem size in bytes.
# TYPE node_filesystem_size_bytes gauge
node_filesystem_size_bytes{device="/dev/disk1s1",fstype="apfs",mountpoint="/Volumes/Macintosh HD"}
5.9999997952e+10
node_filesystem_size_bytes{device="/dev/disk2s1",fstype="apfs",mountpoint="/"} 4.3996317696e+11
node_filesystem_size_bytes{device="/dev/disk2s4",fstype="apfs",mountpoint="/private/var/vm"}
4.3996317696e+11
node_filesystem_size_bytes{device="map -hosts",fstype="autofs",mountpoint="/net"} 0
node_filesystem_size_bytes{device="map auto_home",fstype="autofs",mountpoint="/home"} 0
node_load1 2.451171875
node_load15 2.7646484375

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@mheap
#longhornphp
Node Exporter?

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@mheap
#longhornphp
Exporter?

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@mheap
#longhornphp
Exposes metrics

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@mheap
#longhornphp
node_exporter
Key Description
arp Exposes ARP statistics from /proc/net/arp.
cpu Exposes CPU statistics
ﬁlesystem Exposes ﬁlesystem statistics, such as disk space used.
Itvs Exposes IPVS status from /proc/net/ip_vs and stats from /proc/net/ip_vs_stats.
netstat Exposes network statistics from /proc/net/netstat. This is the same information as netstat -s.
uname Exposes system information as provided by the uname system call.

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@mheap
#longhornphp
mysqld_exporter
Key Description
perf_schema.tablelocks Collect metrics from performance_schema.table_lock_waits_summary_by_table
info_schema.processlist Collect thread state counts from information_schema.processlist
binlog_size Collect the current size of all registered binlog ﬁles
auto_increment.columns Collect auto_increment columns and max values from information_schema

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@mheap
#longhornphp
haproxy_exporter
Key Description
current_queue Current number of queued requests assigned to this server
current_sessions Current number of active sessions
bytes_in_total Current total of incoming bytes
connection_errors_total Total of connection errors

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@mheap
#longhornphp
memcached_exporter
Key Description
bytes_read Total number of bytes read by this server from network
connections_total Total number of connections opened since the server started running
items_evicted_total Total number of valid items removed from cache to free memory for new items
commands_total Total number of all requests broken down by command (get, set, etc.) and status per slab

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@mheap
#longhornphp
Create your own metrics

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@mheap
#longhornphp
calls_received_total{
network="o2",
number="447700900000",
type="mobile"
}
11

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@mheap
#longhornphp
Increment a counter
Serve on /metrics

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@mheap
#longhornphp
global:
scrape_interval: 15s
scrape_configs:
- job_name: nexmo_calls
static_configs:
- targets: ['localhost:3000']

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@mheap
#longhornphp
Increment a counter
Serve on /metrics

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@mheap
#longhornphp
Hard in PHP

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@mheap
#longhornphp
Pushgateway
The Prometheus Pushgateway exists to allow ephemeral and batch
jobs to expose their metrics to Prometheus. Since these kinds of
jobs may not exist long enough to be scraped, they can instead
push their metrics to a Pushgateway. The Pushgateway then
exposes these metrics to Prometheus
https://github.com/prometheus/pushgateway
https://github.com/Lazyshot/prometheus-php

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@mheap
#longhornphp
Things to know

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@mheap
#longhornphp
> 5-10 labels is bad

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@mheap
#longhornphp
Secure /metrics

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@mheap
#longhornphp
Metric Types

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@mheap
#longhornphp
Counters
calls_placed_total

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@mheap
#longhornphp
Gauges
calls_active

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@mheap
#longhornphp
Histograms
calls_duration

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@mheap
#longhornphp
Summaries
calls_duration

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@mheap
#longhornphp
calls_duration_bucket{le="10",network="o2",number="447700900000",type="mobile"} 16

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@mheap
#longhornphp
calls_duration_bucket{quantile="0.5"} 85
calls_duration_sum 13130
calls_duration_count 6

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@mheap
#longhornphp
Counters
Use for counting events that happen (e.g. total number of requests) and query using rate()
Gauge
Use to instrument the current state of a metric (e.g. memory usage, jobs in queue)
Histograms
Use to sample observations in order to analyse distribution of a data set (e.g. request latency)
Summaries
Use for pre-calculated quantiles on client side, but be mindful of calculation cost and aggregation limitations

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@mheap
#longhornphp
Show me graphs

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@mheap
#longhornphp

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@mheap
#longhornphp
PromQL

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@mheap
#longhornphp
calls_placed_total
Element Value
calls_placed_total{instance="localhost:
3000",job="nexmo_calls",network="BT",number="441234567890",type="landline"}
4
8
1
3000",job="nexmo_calls",network="o2",number="447700900000",type="mobile"}
6
3000",job="nexmo_calls",network="o2",number="447908249481",type="mobile"}
7

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@mheap
#longhornphp
calls_placed_total{number="441234567890"}
Element Value
4

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@mheap
#longhornphp
calls_placed_total{number="441234567890"}[3m]
Element Value
3 @1521482766.23

4 @1521482769.23

12 @1521482772.229

16 @1521482775.229

21 @1521482778.23

25 @1521482781.23

27 @1521482784.229

31 @1521482787.229

35 @1521482790.229

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@mheap
#longhornphp
calls_placed_total{number="441234567890"}[3m]
offset 1w
Element Value
2 @1521311766.23

7 @1521311769.23

18 @1523112772.229

20 @1523112775.229

27 @1523112778.23

28 @1523112781.23

30 @1523112784.229

36 @1523112787.229

39 @1523112790.229

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@mheap
#longhornphp
# Total number of calls regardless of any labels
sum(calls_placed_total)
# Total number of requests, broken down by the number label
sum(calls_placed_total[5m]) by (number)
# Total per-second rate over the last 5 minutes by number
sum(rate(calls_placed_total[5m])) by (number)

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@mheap
#longhornphp
sum(calls_placed_total{network="EE", type="mobile"})

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@mheap
#longhornphp
sum(calls_placed_total{network=~"E.*", type="mobile"})

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@mheap
#longhornphp
sum(calls_placed_total{network!="EE", type="mobile"})

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@mheap
#longhornphp
rate(calls_duration_sum{network="EE"}
[5m])
/
rate(calls_duration_count{network="EE"
}[5m])

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@mheap
#longhornphp
histogram_quantile(
0.95,
calls_duration_bucket{number=~"[[number]]"}
)

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@mheap
#longhornphp
sum without (duration)
(rate(calls_placed_total{number=~"[[number]]"}
[3m]))

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@mheap
#longhornphp
predict_linear(calls_active[1h], 86400)

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@mheap
#longhornphp
Grafana

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@mheap
#longhornphp
Gauges
calls_active

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@mheap
#longhornphp

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@mheap
#longhornphp
Counters
calls_placed_total

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@mheap
#longhornphp

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@mheap
#longhornphp
Histograms
calls_duration

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@mheap
#longhornphp

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@mheap
#longhornphp
Version 5

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@mheap
#longhornphp
Alertmanager

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@mheap
#longhornphp
Alertmanager
rules

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@mheap
#longhornphp
alert: CallsMonitorDown
expr: Up{job="nexmo_calls"} == 0
for: 5m
labels:
severity: critical

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@mheap
#longhornphp
alert: LotsOfJobsInQueue
expr: sum(jobs_in_queue) > 100
for: 5m
labels:
severity: major

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@mheap
#longhornphp
alert: DiskFullInFourHours
expr:
predict_linear(node_filesystem_free{job
="node"}[1h], 4 * 3600) < 0
for: 5m
labels:
severity: major

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@mheap
#longhornphp
alert: HighCallsBeingPlacedOnLandline
expr: rate(calls_placed_total{network=~".*", type="landline"}
[1m]) >10
for: 5m
labels:
severity: critical
annotations:
description: 'Unusually high call count on
{{ $labels.network }}'
summary: 'High call count on {{ $labels.network }}'

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@mheap
#longhornphp
Alertmanager
alerts

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@mheap
#longhornphp
[ smtp_from: ]
[ slack_api_url: ]
[ victorops_api_key: ]
[ victorops_api_url: | default = "https://alert.victorops.com/
integrations/generic/20131114/alert/" ]
[ pagerduty_url: | default = "https://events.pagerduty.com/v2/
enqueue" ]
[ opsgenie_api_key: ]
[ opsgenie_api_url: | default = "https://api.opsgenie.com/" ]
[ hipchat_api_url: | default = "https://api.hipchat.com/" ]
[ hipchat_auth_token: ]

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@mheap
#longhornphp
Alertmanager
routes

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@mheap
#longhornphp
route:
receiver: 'default-receiver'
group_wait: 30s
group_interval: 5m
repeat_interval: 4h
group_by: [cluster, alertname]
- receiver: 'database-pager'
group_wait: 10s
match_re:
service: mysql|cassandra
- receiver: 'frontend-pager'
group_by: [product, environment]
match:
team: frontend

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@mheap
#longhornphp
receivers:
- name: 'team-X-mails'
email_configs:
- to: '[email protected]
- name: 'team-X-pager'
email_configs:
- to: '[email protected]'
pagerduty_configs:
- routing_key:
- name: 'team-Y-mails'
email_configs:
- to: '[email protected]'
- name: 'team-Y-pager'
pagerduty_configs:
- routing_key:
- name: 'team-DB-pager'
pagerduty_configs:
- routing_key:

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@mheap
#longhornphp
Alertmanager
inhibits

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@mheap
#longhornphp
! Database is down
! User login failure > 100
! Report generation failure > 15
! GET /healthcheck returned 500

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@mheap
#longhornphp
The DB is the
root cause

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@mheap
#longhornphp
inhibit_rules:
- source_match:
alertname: 'UserLoginFailure'
target_match:
alertname: 'DatabaseDown'
equal: ['instance']

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@mheap
#longhornphp

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@mheap
#longhornphp
Ingester
Grouper
Deduplicator
Silencer
Throttler
Notifier

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@mheap
#longhornphp
Does it scale?

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@mheap
#longhornphp
Yes.

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@mheap
#longhornphp
4.6M time series per server
72k samples ingested per second, per server
185 production prometheus servers

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@mheap
#longhornphp
Prometheus
federates

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@mheap
#longhornphp
Alertmanager
gossips

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@mheap
#longhornphp
So that’s Prometheus

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@mheap
#longhornphp
So that’s Prometheus
(and PromQL, Grafana and Alertmanager)

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@mheap
#longhornphp
I’LL TAKE QUESTIONS OFF STAGE
@MHEAP
HTTPS://JOIND.IN/TALK/B0900

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Move over Graphite, Prometheus is here - Longhorn PHP

Move over Graphite, Prometheus is here - Longhorn PHP

Michael Heap

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