Apricot Phase 2 - Patch 3

This update is backwards compatible. It is optional, but encouraged. The patch includes bug fixes, updated uptime monitoring, and performance improvements.

• Fixed benched message handling that could cause a node to be unable to progress during bootstrapping. This was typically experienced when the node would fail to transition to normal execution as it was finishing bootstrapping.
• Fixed a non-deterministic bug in the C-Chain codebase that could cause nodes that receive a lot of transaction broadcast requests to temporarily stop producing blocks until they processes a block produced by another node.
• Restricted the number of version messages to be sent to a peer to one.
• Removed legacy handshake messages that were deprecated in Apricot Phase 2.
• Marked nodes that have been benched as being offline for uptime calculations.
• Updated the validator set to be more performant during validator set changes.
• Updated the networking to only attempt to re-connect to a peer on disconnect if they are currently a validator.

Apricot Phase 2 - Patch 2

This update is backwards compatible with v1.4.0 and v1.4.1. The changes in the upgrade go into effect at 10 AM EDT, May 5th 2021 on the Fuji testnet and 7 AM EDT, May 10th 2021 on mainnet. The patch further reduces the size of gossiped peerlist messages and introduces several new flags.

• network-peer-list-size allows for tuning the number of peers gossiped in each peerlist message.
• network-peer-list-gossip-size allows for tuning the number of peers to gossip peerlist messages to.
• network-peer-list-gossip-frequency allows for tuning how frequently peerlists are gossiped.

Apricot Phase 2 - Patch 1

This update is backwards compatible with v1.4.0. Please see the expected update times in the v1.4.0 release. The patch reduces the size of gossiped peerlist messages and introduces a new flag --bootstrap-beacon-connection-timeout that allows for the beacon connection timeout to be configured on startup.

Apricot Phase 2

Please note that this change is not backwards compatible with previous releases.

This upgrade applies the Ethereum Berlin upgrade to the C-chain, adds a new AVM endpoint, and includes various stability improvements. We urge everyone in the community to update as soon as possible in order to ensure that their nodes remain healthy.

The changes in the upgrade go into effect at 10 AM EDT, May 5th 2021 on the Fuji testnet and 7 AM EDT, May 10th 2021 on mainnet.

The primary components to this upgrade include:

• Updated Coreth to depend on v1.10.2 of go-ethereum.
• Applied the Ethereum Berlin upgrade. Specifically EIP-2565, EIP-2718, EIP-2929, and EIP-2930.
• Added new stateful pre-compiled smart contracts to the C-chain to support ANT transfers and ARC-20 wrappers around ANTs.
• Added an AVM /events endpoint that supports websocket notification of transactions being accepted matching an addresses filter.
• Added two new networking message types SignedVersion and SignedPeerlist to improve validator -> IP mappings.
• Fixed a long standing bug where shutting down the node while a chain was bootstrapping could cause the chain to be shut down ungracefully.
• Updated the plugin gRPC packages to paginate large requests to improve stability.
• Added the ability to run avalanchego's main binary as a plugin.
• Fixed a potential race condition in the leveldb corruption protection.
• Updated the automated build scripts to better support multiple architectures.

Added command line arguments:

• plugin-mode-enabled specifies the binary to run in plugin mode.

Removed command line arguments:

• p2p-tls-enabled
• disconnected-check-frequency
• disconnected-restart-timeout
• restart-on-disconnected

Apricot Phase 1 - Patch 2

This update is backwards compatible. It is optional, but encouraged. The patch includes security improvements, bug fixes, and monitoring improvements.

Security Improvements

• Enforced a strict canonical format for C-chain blocks made prior to Apricot Phase 1. This ensures that modifications to the extra-data block field can not result in modifications to the chain state during bootstrapping.
• Changed the Keystore to ensure only encrypted values are sent over the IPC between avalanchego and plugin processes.

Bug Fixes:

• Fixed delegation cap calculations to include updating the current delegation maximum before removing a delegator. This ensures that the delegation cap is always enforced.
• Fixed AVM's static API to be registered correctly on startup.
• Updated node uptime calculations to take network upgrades into account.

Monitoring Improvements

• Added an optional node indexer that can provide a locally consistent ordering of operations accepted on a chain.
• Updated ansible inventory to include numerous improvements (Huge thanks to @moreati).

Apricot Phase 1 - Patch 1

This update is backwards compatible. It is optional, but encouraged. The patch includes stability, monitoring improvements, and minor bug fixes.

The primary components to this upgrade include:

• Fixed C-chain segfault when performing compression on arm64 CPUs.
• Added group permissions to local files to enable complex node monitoring.
• Stripped white space from Auth passwords passed through the api-auth-password-file flag.
• Removed timeSinceNoOutstandingRequests as it was replaced by longestRunningRequest.
• Added additional metrics in network throttling.
• Various code cleanup.

Added command line arguments:

• network-health-max-outstanding-request-duration

Removed command line arguments:

• network-health-max-time-since-no-requests

Apricot Phase 1

Please note that this change is not backwards compatible with previous releases.

This upgrade reduces C-chain gas fees, removes C-chain gas refunds, and includes various security improvements. We urge everyone in the community to update as soon as possible in order to ensure that their nodes remain healthy.

The changes in the upgrade go into effect at 10 AM EST, March 25th 2021 on the Fuji testnet and 10 AM EST, March 31st 2021 on mainnet.

The primary components to this upgrade include:

• Reduced C-chain gas cost from 470 nAVAX to 225 nAVAX.
• Removed C-chain gas refunds. This change adopts EIP-3298.
• Refactored C-chain verification to be cleaner when performing network upgrades.
• Fixed the Auth API to properly enforce revoked tokens.
• Strengthened the Auth API to ensure the expected signature format is used.
• Removed the Auth API's password from the CLI arguments.
• Added more strict file permissions checks.
• Added some minor additional error handling.
• Sanitized log writes before being written to disk.
• Added configurable origins to the HTTP endpoint.
• Removed attempted HTTPs to HTTP fail over on startup. Now the node will close on startup if upgrading the HTTP endpoint to HTTPs fails.

Added command line arguments:

• api-auth-password-file specifies the file to read the Auth API's password from.

Removed command line arguments:

• api-auth-password

Thanks to the Flare network for bringing issues to our attention.

Apricot Phase 0 - Upgrade 1 - Patch 4

This update is backwards compatible. It is optional, but encouraged. The patch includes stability and monitoring improvements.

• Updated readme to correct storage requirements.
• Added additional error handling to Avalanche Tx verification during bootstrapping.
• Updated numerous metrics, including adding various new metrics relating to node health and database usage, removing unused and invalid metrics, and fixing some metric names.
• Added additional logging to CI.
• Added the C-chain to the list of critical chains.

Apricot Phase 0 - Upgrade 1 - Patch 3

This update is backwards compatible. It is optional, but encouraged. The patch includes stability and monitoring improvements.

• Adjusted [network, router, consensus] health check parameters to remove flaky health checks.
• Simplified C-chain block handling.

Apricot Phase 0 - Upgrade 1 - Patch 2

This update is backwards compatible. It is optional, but encouraged. The patch includes stability, performance, and monitoring improvements.

• Added IP aliases in the network library to avoid repeated SYN calls.
• Fixed bootstrap message handling when bootstrapping from yourself.
• Simplified AdvanceTimeTx issuance.
• Added new consensus health checks.
• Adding node health logging.
• Added health responses to health GET requests.
• Consolidated incoming message logs.
• Added error logging to the LevelDB wrapper.
• Added error codes to the rpcdb to avoid string parsing.
• Improved C-chain handling of canonical chain to reduce the number of reorgs.
• Improved C-chain handling of mock calls performed on the pending block.