docs: Added host prefix to host-based metrics (vectordotdev#3637)

Signed-off-by: James Turnbull <[email protected]>

rfcs/2020-08-26-3191-host-metrics.md

@@ -41,46 +41,46 @@ For this implementation we're recommending the Heim crate based on platform and
 
 We'd use one of these to collect the following metrics:
 
-- `cpu_seconds_total` tagged with mode (idle, nice, system, user) and CPU. (counter)
-- `disk_read_bytes_total` tagged with the disk (counter)
-- `disk_read_errors_total` tagged with the disk (counter)
-- `disk_read_retries_total` tagged with the disk (counter)
-- `disk_read_sectors_total` tagged with the disk (counter)
-- `disk_read_time_seconds_total` tagged with the disk (counter)
-- `disk_reads_completed_total` tagged with the disk (counter)
-- `disk_write_errors_total` tagged with the disk (counter)
-- `disk_write_retries_total` tagged with the disk (counter)
-- `disk_write_time_seconds_total` tagged with the disk (counter)
-- `disk_writes_completed_total` tagged with the disk (counter)
-- `disk_written_bytes_total` tagged with the disk (counter)
-- `disk_written_sectors_total` tagged with the disk (counter)
-- `filesystem_avail_bytes` tagged with the device, filesystem type, and mountpoint (gauge)
-- `filesystem_device_error` tagged with the device, filesystem type, and mountpoint (gauge)
-- `filesystem_free_bytes` tagged with the device, filesystem type, and mountpoint (gauge)
-- `filesystem_size_bytes` tagged with the device, filesystem type, and mountpoint (gauge)
-- `filesystem_total_file_nodes` tagged with the device, filesystem type, and mountpoint (gauge)
-- `filesystem_free_file_nodes` tagged with the device, filesystem type, and mountpoint (gauge)
-- `load1` (gauge)
-- `load5` (gauge)
-- `load15` (gauge)
-- `memory_active_bytes` (gauge)
-- `memory_compressed_bytes` (gauge)
-- `memory_free_bytes` (gauge)
-- `memory_inactive_bytes` (gauge)
-- `memory_swap_total_bytes` (gauge)
-- `memory_swap_used_bytes` (gauge)
-- `memory_swapped_in_bytes_total` (gauge)
-- `memory_swapped_out_bytes_total` (gauge)
-- `memory_total_bytes` (gauge)
-- `memory_wired_bytes` (gauge)
-- `network_receive_bytes_total` tagged with device (counter)
-- `network_receive_errs_total` tagged with device (counter)
-- `network_receive_multicast_total` tagged with device (counter)
-- `network_receive_packets_total` tagged with device (counter)
-- `network_transmit_bytes_total` tagged with device (counter)
-- `network_transmit_errs_total` tagged with device (counter)
-- `network_transmit_multicast_total` tagged with device (counter)
-- `network_transmit_packets_total` tagged with device (counter)
+- `host_cpu_seconds_total` tagged with mode (idle, nice, system, user) and CPU. (counter)
+- `host_disk_read_bytes_total` tagged with the disk (counter)
+- `host_disk_read_errors_total` tagged with the disk (counter)
+- `host_disk_read_retries_total` tagged with the disk (counter)
+- `host_disk_read_sectors_total` tagged with the disk (counter)
+- `host_disk_read_time_seconds_total` tagged with the disk (counter)
+- `host_disk_reads_completed_total` tagged with the disk (counter)
+- `host_disk_write_errors_total` tagged with the disk (counter)
+- `host_disk_write_retries_total` tagged with the disk (counter)
+- `host_disk_write_time_seconds_total` tagged with the disk (counter)
+- `host_disk_writes_completed_total` tagged with the disk (counter)
+- `host_disk_written_bytes_total` tagged with the disk (counter)
+- `host_disk_written_sectors_total` tagged with the disk (counter)
+- `host_filesystem_avail_bytes` tagged with the device, filesystem type, and mountpoint (gauge)
+- `host_filesystem_device_error` tagged with the device, filesystem type, and mountpoint (gauge)
+- `host_filesystem_free_bytes` tagged with the device, filesystem type, and mountpoint (gauge)
+- `host_filesystem_size_bytes` tagged with the device, filesystem type, and mountpoint (gauge)
+- `host_filesystem_total_file_nodes` tagged with the device, filesystem type, and mountpoint (gauge)
+- `host_filesystem_free_file_nodes` tagged with the device, filesystem type, and mountpoint (gauge)
+- `host_load1` (gauge)
+- `host_load5` (gauge)
+- `host_load15` (gauge)
+- `host_memory_active_bytes` (gauge)
+- `host_memory_compressed_bytes` (gauge)
+- `host_memory_free_bytes` (gauge)
+- `host_memory_inactive_bytes` (gauge)
+- `host_memory_swap_total_bytes` (gauge)
+- `host_memory_swap_used_bytes` (gauge)
+- `host_memory_swapped_in_bytes_total` (gauge)
+- `host_memory_swapped_out_bytes_total` (gauge)
+- `host_memory_total_bytes` (gauge)
+- `host_memory_wired_bytes` (gauge)
+- `host_network_receive_bytes_total` tagged with device (counter)
+- `host_network_receive_errs_total` tagged with device (counter)
+- `host_network_receive_multicast_total` tagged with device (counter)
+- `host_network_receive_packets_total` tagged with device (counter)
+- `host_network_transmit_bytes_total` tagged with device (counter)
+- `host_network_transmit_errs_total` tagged with device (counter)
+- `host_network_transmit_multicast_total` tagged with device (counter)
+- `host_network_transmit_packets_total` tagged with device (counter)
 
 Users should be able to limit the collection of metrics to specific classes, here: `cpu`, `memory`, `disk`, `filesystem`, `load`, and `network`.
 
@@ -99,9 +99,9 @@ And `collector` for type of metric:
 
 Specific explanation of some of the filesystem metrics:
 
-- `filesystem_avail_bytes` = Filesystem space available to non-root users in bytes (including reserved blocks).
-- `filesystem_free_bytes` = Filesystem free space in bytes (excluding reserved blocks).
-- `filesystem_size_bytes` = Filesystem size in bytes.
+- `host_filesystem_avail_bytes` = Filesystem space available to non-root users in bytes (including reserved blocks).
+- `host_filesystem_free_bytes` = Filesystem free space in bytes (excluding reserved blocks).
+- `host_filesystem_size_bytes` = Filesystem size in bytes.
 
 
 ## Doc-level Proposal