Add example of translating new metrics to old format in case of migration to 1.16 version (#982)

Add additional example of how to save old metrics

Signed-off-by: Ivan Kiselev <ivan@messagebird.com>

docs/V0_16_UPGRADE_GUIDE.md

@@ -10,11 +10,12 @@ Grafana users can add multiple queries in order to display both the old and new
 
 ## Use recording rules
 
-We have provides a [sample recording rule set] to create duplicate metrics.  This has a minor disadvantage that it creates a lot of extra data, and re-aligns the timestamps of the data.
+We have provided a [sample recording rule set that translates old metrics to new ones] and the [one that translates new metrics format to old one] to create duplicate metrics (it translates "old" metrics format to new one).  This has a minor disadvantage that it creates a lot of extra data, and re-aligns the timestamps of the data.
 
 ## Run both old and new versions simultaneously.
 
 It's possible to run both the old and new exporter on different ports, and include an additional scrape job in Prometheus.  It's recommended to enable only the collectors that have name changes that you care about.
 
 [naming best practices]: https://prometheus.io/docs/practices/naming/
-[sample recording rule set]: example-16-compatibility-rules.yml
+[sample recording rule set that translates old metrics to new ones]: example-16-compatibility-rules.yml
+[one that translates new metrics format to old one]: example-16-compatibility-rules-new-to-old.yml

docs/example-16-compatibility-rules-new-to-old.yml

@@ -0,0 +1,190 @@
+- name: node_exporter-16-bcache
+  rules:
+  - expr: node_bcache_cache_read_races
+    record: node_bcache_cache_read_races_total
+- name: node_exporter-16-buddyinfo
+  rules:
+  - expr: node_buddyinfo_blocks
+    record: node_buddyinfo_count
+- name: node_exporter-16-stat
+  rules:
+  - expr: node_boot_time_seconds
+    record: node_boot_time
+  - expr: node_context_switches_total
+    record: node_context_switches
+  - expr: node_forks_total
+    record: node_forks
+  - expr: node_intr_total
+    record: node_intr
+- name: node_exporter-16-cpu
+  rules:
+  - expr: label_replace(node_cpu_seconds_total, "cpu", "$1", "cpu", "cpu(.+)")
+    record: node_cpu
+- name: node_exporter-16-diskstats
+  rules:
+  - expr: node_disk_read_bytes_total
+    record: node_disk_bytes_read
+  - expr: node_disk_written_bytes_total
+    record: node_disk_bytes_written
+  - expr: node_disk_io_time_seconds_total
+    record: node_disk_io_time_ms
+  - expr: node_disk_io_time_weighted_seconds_total
+    record: node_disk_io_time_weighted
+  - expr: node_disk_reads_completed_total
+    record: node_disk_reads_completed
+  - expr: node_disk_reads_merged_total
+    record: node_disk_reads_merged
+  - expr: node_disk_read_time_seconds_total
+    record: node_disk_read_time_ms
+  - expr: node_disk_writes_completed_total
+    record: node_disk_writes_completed
+  - expr: node_disk_writes_merged_total
+    record: node_disk_writes_merged
+  - expr: node_disk_write_time_seconds_total
+    record: node_disk_write_time_ms
+- name: node_exporter-16-filesystem
+  rules:
+  - expr: node_filesystem_free_bytes
+    record: node_filesystem_free
+  - expr: node_filesystem_avail_bytes
+    record: node_filesystem_avail
+  - expr: node_filesystem_size_bytes
+    record: node_filesystem_size
+- name: node_exporter-16-infiniband
+  rules:
+  - expr: node_infiniband_port_data_received_bytes_total
+    record: node_infiniband_port_data_received_bytes
+  - expr: node_infiniband_port_data_transmitted_bytes_total
+    record: node_infiniband_port_data_transmitted_bytes
+- name: node_exporter-16-interrupts
+  rules:
+  - expr: node_interrupts_total
+    record: node_interrupts
+- name: node_exporter-16-memory
+  rules:
+  - expr: node_memory_Active_bytes
+    record: node_memory_Active
+  - expr: node_memory_Active_anon_bytes
+    record: node_memory_Active_anon
+  - expr: node_memory_Active_file_bytes
+    record: node_memory_Active_file
+  - expr: node_memory_AnonHugePages_bytes
+    record: node_memory_AnonHugePages
+  - expr: node_memory_AnonPages_bytes
+    record: node_memory_AnonPages
+  - expr: node_memory_Bounce_bytes
+    record: node_memory_Bounce
+  - expr: node_memory_Buffers_bytes
+    record: node_memory_Buffers
+  - expr: node_memory_Cached_bytes
+    record: node_memory_Cached
+  - expr: node_memory_CommitLimit_bytes
+    record: node_memory_CommitLimit
+  - expr: node_memory_Committed_AS_bytes
+    record: node_memory_Committed_AS
+  - expr: node_memory_DirectMap2M_bytes
+    record: node_memory_DirectMap2M
+  - expr: node_memory_DirectMap4k_bytes
+    record: node_memory_DirectMap4k
+  - expr: node_memory_Dirty_bytes
+    record: node_memory_Dirty
+  - expr: node_memory_HardwareCorrupted_bytes
+    record: node_memory_HardwareCorrupted
+  - expr: node_memory_Hugepagesize_bytes
+    record: node_memory_Hugepagesize
+  - expr: node_memory_Inactive_bytes
+    record: node_memory_Inactive
+  - expr: node_memory_Inactive_anon_bytes
+    record: node_memory_Inactive_anon
+  - expr: node_memory_Inactive_file_bytes
+    record: node_memory_Inactive_file
+  - expr: node_memory_KernelStack_bytes
+    record: node_memory_KernelStack
+  - expr: node_memory_Mapped_bytes
+    record: node_memory_Mapped
+  - expr: node_memory_MemAvailable_bytes
+    record: node_memory_MemAvailable
+  - expr: node_memory_MemFree_bytes
+    record: node_memory_MemFree
+  - expr: node_memory_MemTotal_bytes
+    record: node_memory_MemTotal
+  - expr: node_memory_Mlocked_bytes
+    record: node_memory_Mlocked
+  - expr: node_memory_NFS_Unstable_bytes
+    record: node_memory_NFS_Unstable
+  - expr: node_memory_PageTables_bytes
+    record: node_memory_PageTables
+  - expr: node_memory_Shmem_bytes
+    record: node_memory_Shmem
+  - expr: node_memory_Slab_bytes
+    record: node_memory_Slab
+  - expr: node_memory_SReclaimable_bytes
+    record: node_memory_SReclaimable
+  - expr: node_memory_SUnreclaim_bytes
+    record: node_memory_SUnreclaim
+  - expr: node_memory_SwapCached_bytes
+    record: node_memory_SwapCached
+  - expr: node_memory_SwapFree_bytes
+    record: node_memory_SwapFree
+  - expr: node_memory_SwapTotal_bytes
+    record: node_memory_SwapTotal
+  - expr: node_memory_Unevictable_bytes
+    record: node_memory_Unevictable
+  - expr: node_memory_VmallocChunk_bytes
+    record: node_memory_VmallocChunk
+  - expr: node_memory_VmallocTotal_bytes
+    record: node_memory_VmallocTotal
+  - expr: node_memory_VmallocUsed_bytes
+    record: node_memory_VmallocUsed
+  - expr: node_memory_Writeback_bytes
+    record: node_memory_Writeback
+  - expr: node_memory_WritebackTmp_bytes
+    record: node_memory_WritebackTmp
+- name: node_exporter-16-network
+  rules:
+  - expr: node_network_receive_bytes_total
+    record: node_network_receive_bytes
+  - expr: node_network_receive_compressed_total
+    record: node_network_receive_compressed
+  - expr: node_network_receive_drop_total
+    record: node_network_receive_drop
+  - expr: node_network_receive_errs_total
+    record: node_network_receive_errs
+  - expr: node_network_receive_fifo_total
+    record: node_network_receive_fifo
+  - expr: node_network_receive_frame_total
+    record: node_network_receive_frame
+  - expr: node_network_receive_multicast_total
+    record: node_network_receive_multicast
+  - expr: node_network_receive_packets_total
+    record: node_network_receive_packets
+  - expr: node_network_transmit_bytes_total
+    record: node_network_transmit_bytes
+  - expr: node_network_transmit_compressed_total
+    record: node_network_transmit_compressed
+  - expr: node_network_transmit_drop_total
+    record: node_network_transmit_drop
+  - expr: node_network_transmit_errs_total
+    record: node_network_transmit_errs
+  - expr: node_network_transmit_fifo_total
+    record: node_network_transmit_fifo
+  - expr: node_network_transmit_frame_total
+    record: node_network_transmit_frame
+  - expr: node_network_transmit_multicast_total
+    record: node_network_transmit_multicast
+  - expr: node_network_transmit_packets_total
+    record: node_network_transmit_packets
+- name: node_exporter-16-nfs
+  rules:
+  - expr: node_nfs_connections_total
+    record: node_nfs_net_connections
+  - expr: node_nfs_packets_total
+    record: node_nfs_net_reads
+  - expr: label_replace(label_replace(node_nfs_requests_total, "proto", "$1", "version", "(.+)"), "method", "$1", "procedure", "(.+)")
+    record: node_nfs_procedures
+  - expr: node_nfs_rpc_authentication_refreshes_total
+    record: node_nfs_rpc_authentication_refreshes
+  - expr: node_nfs_rpcs_total
+    record: node_nfs_rpc_operations
+  - expr: node_nfs_rpc_retransmissions_total
+    record: node_nfs_rpc_retransmissions