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CHANGELOG.md

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+# v3.0.0
+
+## Key Changes
+
+The new `solana-exporter` (renamed from `solana_exporter`) contains many new metrics, standardised naming conventions 
+and more configurability.
+
+## What's Changed
+### Metric Updates
+#### New Metrics
+
+Below is a list of newly added metrics (see the [README](README.md) 
+for metric descriptions):
+
+* `solana_account_balance` (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>)
+* `solana_node_is_healthy` (<u><strong>[@GranderStark](https://github.com/GranderStark)</strong></u>)
+* `solana_nude_num_slots_behind` (<u><strong>[@GranderStark](https://github.com/GranderStark)</strong></u>)
+* `solana_node_minimum_ledger_slot` (<u><strong>[@GranderStark](https://github.com/GranderStark)</strong></u>)
+* `solana_node_first_available_block` (<u><strong>[@GranderStark](https://github.com/GranderStark)</strong></u>)
+* `solana_cluster_slots_by_epoch_total` (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>) 
+* `solana_validator_fee_rewards` (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>)
+* `solana_validator_block_size` (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>)
+* `solana_node_block_height` (<u><strong>[@GranderStark](https://github.com/GranderStark)</strong></u>)
+* `solana_cluster_active_stake` (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>)
+* `solana_cluster_last_vote` (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>)
+* `solana_cluster_root_slot` (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>)
+* `solana_cluster_validator_count` (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>)
+
+#### Renamed Metrics
+
+The table below contains all metrics renamed in `v3.0.0` (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>):
+
+| Old Name                              | New Name                                       |
+|---------------------------------------|------------------------------------------------|
+| `solana_validator_activated_stake`    | `solana_validator_active_stake`                |
+| `solana_confirmed_transactions_total` | `solana_node_transactions_total`               |
+| `solana_confirmed_slot_height`        | `solana_node_slot_height`                      |
+| `solana_confirmed_epoch_number`       | `solana_node_epoch_number`                     |
+| `solana_confirmed_epoch_first_slot`   | `solana_node_epoch_first_slot`                 |
+| `solana_confirmed_epoch_last_slot`    | `solana_node_epoch_last_slot`                  |
+| `solana_leader_slots_total`           | `solana_validator_leader_slots_total`          |
+| `solana_leader_slots_by_epoch`        | `solana_validator_leader_slots_by_epoch_total` |
+| `solana_active_validators`            | `solana_cluster_validator_count`               |
+
+Metrics were renamed to:
+* Remove commitment levels from metric names.
+* Standardise naming conventions:
+  * `solana_validator_*`: Validator-specific metrics which are trackable from any RPC node (i.e., active stake).
+  * `solana_node_*`: Node-specific metrics which are not trackable from other nodes (i.e., node health).
+
+#### Label Updates
+
+The following labels were renamed (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>):
+ * `pubkey` was renamed to `votekey`, to clearly identity that it refers to the address of a validators vote account.
+
+### Config Updates
+#### New Config Parameters
+
+Below is a list of newly added config parameters (see the [README](README.md) 
+for parameter descriptions) (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>):
+
+ * `-balance-address`
+ * `-nodekey`
+ * `-comprehensive-slot-tracking`
+ * `-monitor-block-sizes`
+ * `-slot-pace`
+ * `-light-mode`
+ * `-http-timeout`
+ * `-comprehensive-vote-account-tracking`
+
+#### Renamed Config Parameters
+
+The table below contains all config parameters renamed in `v3.0.0` (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>):
+
+| Old Name                            | New Name          |
+|-------------------------------------|-------------------|
+| `-rpcURI`                           | `-rpc-url`        |
+| `addr`                              | `-listen-address` |
+
+#### Removed Config Parameters
+
+The following metrics were removed (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>):
+
+ * `votepubkey`. Configure validator tracking using the `-nodekey` parameter.
+
+### General Updates
+
+* The project was renamed from `solana_exporter` to `solana-exporter`, to conform with 
+[Go naming conventions](https://github.com/unknwon/go-code-convention/blob/main/en-US.md) (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>).
+* Testing was significantly improved (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>).
+* [klog](https://github.com/kubernetes/klog) logging was removed and replaced with [zap](https://github.com/uber-go/zap)
+  (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>)
+* Easy usage (<u><strong>[@johnstonematt](https://github.com/johnstonematt)</strong></u>):
+  * The example dashboard was updated.
+  * An example prometheus config was added, as well as recording rules for tracking skip rate.
+
+## New Contributors
+
+* <u><strong>[@GranderStark](https://github.com/GranderStark)</strong></u> made their first contribution.