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clickhouse-admin-keeper.json
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{
"openapi": "3.0.3",
"info": {
"title": "ClickHouse Cluster Admin Keeper API",
"description": "API for interacting with the Oxide control plane's ClickHouse cluster keepers",
"contact": {
"url": "https://oxide.computer",
"email": "[email protected]"
},
"version": "0.0.1"
},
"paths": {
"/4lw-conf": {
"get": {
"summary": "Retrieve configuration information from a keeper node.",
"operationId": "keeper_conf",
"responses": {
"200": {
"description": "successful operation",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/KeeperConf"
}
}
}
},
"4XX": {
"$ref": "#/components/responses/Error"
},
"5XX": {
"$ref": "#/components/responses/Error"
}
}
}
},
"/4lw-lgif": {
"get": {
"summary": "Retrieve a logically grouped information file from a keeper node.",
"description": "This information is used internally by ZooKeeper to manage snapshots and logs for consistency and recovery.",
"operationId": "lgif",
"responses": {
"200": {
"description": "successful operation",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Lgif"
}
}
}
},
"4XX": {
"$ref": "#/components/responses/Error"
},
"5XX": {
"$ref": "#/components/responses/Error"
}
}
}
},
"/cluster-membership": {
"get": {
"summary": "Retrieve cluster membership information from a keeper node.",
"operationId": "keeper_cluster_membership",
"responses": {
"200": {
"description": "successful operation",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/ClickhouseKeeperClusterMembership"
}
}
}
},
"4XX": {
"$ref": "#/components/responses/Error"
},
"5XX": {
"$ref": "#/components/responses/Error"
}
}
}
},
"/config": {
"put": {
"summary": "Generate a ClickHouse configuration file for a keeper node on a specified",
"description": "directory and enable the SMF service if not currently enabled.\n\nNote that we cannot start the keeper service until there is an initial configuration set via this endpoint.",
"operationId": "generate_config_and_enable_svc",
"requestBody": {
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/KeeperConfigurableSettings"
}
}
},
"required": true
},
"responses": {
"201": {
"description": "successful creation",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/GenerateConfigResult"
}
}
}
},
"4XX": {
"$ref": "#/components/responses/Error"
},
"5XX": {
"$ref": "#/components/responses/Error"
}
}
}
},
"/generation": {
"get": {
"summary": "Retrieve the generation number of a configuration",
"operationId": "generation",
"responses": {
"200": {
"description": "successful operation",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/Generation"
}
}
}
},
"4XX": {
"$ref": "#/components/responses/Error"
},
"5XX": {
"$ref": "#/components/responses/Error"
}
}
}
},
"/raft-config": {
"get": {
"summary": "Retrieve information from ClickHouse virtual node /keeper/config which",
"description": "contains last committed cluster configuration.",
"operationId": "raft_config",
"responses": {
"200": {
"description": "successful operation",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/RaftConfig"
}
}
}
},
"4XX": {
"$ref": "#/components/responses/Error"
},
"5XX": {
"$ref": "#/components/responses/Error"
}
}
}
}
},
"components": {
"schemas": {
"ClickhouseHost": {
"oneOf": [
{
"type": "object",
"properties": {
"ipv6": {
"type": "string",
"format": "ipv6"
}
},
"required": [
"ipv6"
],
"additionalProperties": false
},
{
"type": "object",
"properties": {
"ipv4": {
"type": "string",
"format": "ipv4"
}
},
"required": [
"ipv4"
],
"additionalProperties": false
},
{
"type": "object",
"properties": {
"domain_name": {
"type": "string"
}
},
"required": [
"domain_name"
],
"additionalProperties": false
}
]
},
"ClickhouseKeeperClusterMembership": {
"description": "The configuration of the clickhouse keeper raft cluster returned from a single keeper node\n\nEach keeper is asked for its known raft configuration via `clickhouse-admin` dropshot servers running in `ClickhouseKeeper` zones. state. We include the leader committed log index known to the current keeper node (whether or not it is the leader) to determine which configuration is newest.",
"type": "object",
"properties": {
"leader_committed_log_index": {
"description": "Index of the last committed log entry from the leader's perspective",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"queried_keeper": {
"description": "Keeper ID of the keeper being queried",
"allOf": [
{
"$ref": "#/components/schemas/KeeperId"
}
]
},
"raft_config": {
"description": "Keeper IDs of all keepers in the cluster",
"type": "array",
"items": {
"$ref": "#/components/schemas/KeeperId"
},
"uniqueItems": true
}
},
"required": [
"leader_committed_log_index",
"queried_keeper",
"raft_config"
]
},
"Error": {
"description": "Error information from a response.",
"type": "object",
"properties": {
"error_code": {
"type": "string"
},
"message": {
"type": "string"
},
"request_id": {
"type": "string"
}
},
"required": [
"message",
"request_id"
]
},
"GenerateConfigResult": {
"description": "Result after generating a configuration file",
"oneOf": [
{
"type": "object",
"properties": {
"replica": {
"$ref": "#/components/schemas/ReplicaConfig"
}
},
"required": [
"replica"
],
"additionalProperties": false
},
{
"type": "object",
"properties": {
"keeper": {
"$ref": "#/components/schemas/KeeperConfig"
}
},
"required": [
"keeper"
],
"additionalProperties": false
}
]
},
"Generation": {
"description": "Generation numbers stored in the database, used for optimistic concurrency control",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"KeeperConf": {
"description": "Keeper configuration information",
"type": "object",
"properties": {
"auto_forwarding": {
"description": "Allow to forward write requests from followers to the leader.",
"type": "boolean"
},
"compress_logs": {
"description": "Whether to write compressed coordination logs in ZSTD format.",
"type": "boolean"
},
"compress_snapshots_with_zstd_format": {
"description": "Whether to write compressed snapshots in ZSTD format (instead of custom LZ4).",
"type": "boolean"
},
"configuration_change_tries_count": {
"description": "How many times we will try to apply configuration change (add/remove server) to the cluster.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"dead_session_check_period_ms": {
"description": "How often ClickHouse Keeper checks for dead sessions and removes them (ms).",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"election_timeout_lower_bound_ms": {
"description": "If the follower does not receive a heartbeat from the leader in this interval, then it can initiate leader election. Must be less than or equal to election_timeout_upper_bound_ms. Ideally they shouldn't be equal.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"election_timeout_upper_bound_ms": {
"description": "If the follower does not receive a heartbeat from the leader in this interval, then it must initiate leader election.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"enable_ipv6": {
"description": "Whether Ipv6 is enabled.",
"type": "boolean"
},
"force_sync": {
"description": "Whether to call fsync on each change in RAFT changelog.",
"type": "boolean"
},
"four_letter_word_allow_list": {
"description": "Allow list of 4lw commands.",
"type": "string"
},
"fresh_log_gap": {
"description": "When the node became fresh.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"heart_beat_interval_ms": {
"description": "How often a ClickHouse Keeper leader will send heartbeats to followers (ms).",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"log_storage_disk": {
"description": "Name of disk used for logs.",
"type": "string"
},
"log_storage_path": {
"description": "Path to coordination logs, just like ZooKeeper it is best to store logs on non-busy nodes.",
"type": "string",
"format": "Utf8PathBuf"
},
"max_request_queue_size": {
"description": "Maximum number of requests that can be in queue for processing.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"max_requests_batch_bytes_size": {
"description": "Max size in bytes of batch of requests that can be sent to RAFT.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"max_requests_batch_size": {
"description": "Max size of batch in requests count before it will be sent to RAFT.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"max_requests_quick_batch_size": {
"description": "Max size of batch of requests to try to get before proceeding with RAFT. Keeper will not wait for requests but take only requests that are already in the queue.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"min_session_timeout_ms": {
"description": "Min timeout for client session (ms).",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"operation_timeout_ms": {
"description": "Timeout for a single client operation (ms).",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"quorum_reads": {
"description": "Whether to execute read requests as writes through whole RAFT consesus with similar speed.",
"type": "boolean"
},
"raft_limits_reconnect_limit": {
"description": "If connection to a peer is silent longer than this limit * (heartbeat interval), we re-establish the connection.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"raft_logs_level": {
"description": "Text logging level about coordination (trace, debug, and so on).",
"allOf": [
{
"$ref": "#/components/schemas/LogLevel"
}
]
},
"reserved_log_items": {
"description": "How many coordination log records to store before compaction.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"rotate_log_storage_interval": {
"description": "How many log records to store in a single file.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"server_id": {
"description": "Unique server id, each participant of the ClickHouse Keeper cluster must have a unique number (1, 2, 3, and so on).",
"allOf": [
{
"$ref": "#/components/schemas/KeeperId"
}
]
},
"session_timeout_ms": {
"description": "Max timeout for client session (ms).",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"shutdown_timeout": {
"description": "Wait to finish internal connections and shutdown (ms).",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"snapshot_distance": {
"description": "How often ClickHouse Keeper will create new snapshots (in the number of records in logs).",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"snapshot_storage_disk": {
"description": "Name of disk used for storage.",
"type": "string"
},
"snapshot_storage_path": {
"description": "Path to coordination snapshots.",
"type": "string",
"format": "Utf8PathBuf"
},
"snapshots_to_keep": {
"description": "How many snapshots to keep.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"stale_log_gap": {
"description": "Threshold when leader considers follower as stale and sends the snapshot to it instead of logs.",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"startup_timeout": {
"description": "If the server doesn't connect to other quorum participants in the specified timeout it will terminate (ms).",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"tcp_port": {
"description": "Port for a client to connect.",
"type": "integer",
"format": "uint16",
"minimum": 0
}
},
"required": [
"auto_forwarding",
"compress_logs",
"compress_snapshots_with_zstd_format",
"configuration_change_tries_count",
"dead_session_check_period_ms",
"election_timeout_lower_bound_ms",
"election_timeout_upper_bound_ms",
"enable_ipv6",
"force_sync",
"four_letter_word_allow_list",
"fresh_log_gap",
"heart_beat_interval_ms",
"log_storage_disk",
"log_storage_path",
"max_request_queue_size",
"max_requests_batch_bytes_size",
"max_requests_batch_size",
"max_requests_quick_batch_size",
"min_session_timeout_ms",
"operation_timeout_ms",
"quorum_reads",
"raft_limits_reconnect_limit",
"raft_logs_level",
"reserved_log_items",
"rotate_log_storage_interval",
"server_id",
"session_timeout_ms",
"shutdown_timeout",
"snapshot_distance",
"snapshot_storage_disk",
"snapshot_storage_path",
"snapshots_to_keep",
"stale_log_gap",
"startup_timeout",
"tcp_port"
]
},
"KeeperConfig": {
"description": "Configuration for a ClickHouse keeper",
"type": "object",
"properties": {
"coordination_settings": {
"description": "Internal coordination settings",
"allOf": [
{
"$ref": "#/components/schemas/KeeperCoordinationSettings"
}
]
},
"datastore_path": {
"description": "Directory for all files generated by ClickHouse itself",
"type": "string",
"format": "Utf8PathBuf"
},
"generation": {
"description": "A unique identifier for the configuration generation.",
"allOf": [
{
"$ref": "#/components/schemas/Generation"
}
]
},
"listen_host": {
"description": "Address the keeper is listening on",
"type": "string",
"format": "ipv6"
},
"log_storage_path": {
"description": "Directory for coordination logs",
"type": "string",
"format": "Utf8PathBuf"
},
"logger": {
"description": "Logging settings",
"allOf": [
{
"$ref": "#/components/schemas/LogConfig"
}
]
},
"raft_config": {
"description": "Settings for each server in the keeper cluster",
"allOf": [
{
"$ref": "#/components/schemas/RaftServers"
}
]
},
"server_id": {
"description": "Unique ID for this keeper node",
"allOf": [
{
"$ref": "#/components/schemas/KeeperId"
}
]
},
"snapshot_storage_path": {
"description": "Directory for coordination snapshot storage",
"type": "string",
"format": "Utf8PathBuf"
},
"tcp_port": {
"description": "Port for TCP connections",
"type": "integer",
"format": "uint16",
"minimum": 0
}
},
"required": [
"coordination_settings",
"datastore_path",
"generation",
"listen_host",
"log_storage_path",
"logger",
"raft_config",
"server_id",
"snapshot_storage_path",
"tcp_port"
]
},
"KeeperConfigsForReplica": {
"type": "object",
"properties": {
"nodes": {
"type": "array",
"items": {
"$ref": "#/components/schemas/KeeperNodeConfig"
}
}
},
"required": [
"nodes"
]
},
"KeeperConfigurableSettings": {
"description": "The top most type for configuring clickhouse-servers via clickhouse-admin-keeper-api",
"type": "object",
"properties": {
"generation": {
"description": "A unique identifier for the configuration generation.",
"allOf": [
{
"$ref": "#/components/schemas/Generation"
}
]
},
"settings": {
"description": "Configurable settings for a ClickHouse keeper node.",
"allOf": [
{
"$ref": "#/components/schemas/KeeperSettings"
}
]
}
},
"required": [
"generation",
"settings"
]
},
"KeeperCoordinationSettings": {
"type": "object",
"properties": {
"operation_timeout_ms": {
"type": "integer",
"format": "uint32",
"minimum": 0
},
"raft_logs_level": {
"$ref": "#/components/schemas/LogLevel"
},
"session_timeout_ms": {
"type": "integer",
"format": "uint32",
"minimum": 0
}
},
"required": [
"operation_timeout_ms",
"raft_logs_level",
"session_timeout_ms"
]
},
"KeeperId": {
"description": "A unique ID for a ClickHouse Keeper",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"KeeperNodeConfig": {
"type": "object",
"properties": {
"host": {
"$ref": "#/components/schemas/ClickhouseHost"
},
"port": {
"type": "integer",
"format": "uint16",
"minimum": 0
}
},
"required": [
"host",
"port"
]
},
"KeeperServerInfo": {
"type": "object",
"properties": {
"host": {
"description": "Host of the keeper server",
"allOf": [
{
"$ref": "#/components/schemas/ClickhouseHost"
}
]
},
"priority": {
"description": "non-negative integer telling which nodes should be prioritised on leader elections. Priority of 0 means server will never be a leader.",
"type": "integer",
"format": "uint16",
"minimum": 0
},
"raft_port": {
"description": "Keeper server raft port",
"type": "integer",
"format": "uint16",
"minimum": 0
},
"server_id": {
"description": "Unique, immutable ID of the keeper server",
"allOf": [
{
"$ref": "#/components/schemas/KeeperId"
}
]
},
"server_type": {
"description": "A keeper server either participant or learner (learner does not participate in leader elections).",
"allOf": [
{
"$ref": "#/components/schemas/KeeperServerType"
}
]
}
},
"required": [
"host",
"priority",
"raft_port",
"server_id",
"server_type"
]
},
"KeeperServerType": {
"type": "string",
"enum": [
"participant",
"learner"
]
},
"KeeperSettings": {
"description": "Configurable settings for a ClickHouse keeper node.",
"type": "object",
"properties": {
"config_dir": {
"description": "Directory for the generated keeper configuration XML file",
"type": "string",
"format": "Utf8PathBuf"
},
"datastore_path": {
"description": "Directory for all files generated by ClickHouse itself",
"type": "string",
"format": "Utf8PathBuf"
},
"id": {
"description": "Unique ID of the keeper node",
"allOf": [
{
"$ref": "#/components/schemas/KeeperId"
}
]
},
"listen_addr": {
"description": "Address the keeper is listening on",
"type": "string",
"format": "ipv6"
},
"raft_servers": {
"description": "ID and host of each server in the keeper cluster",
"type": "array",
"items": {
"$ref": "#/components/schemas/RaftServerSettings"
}
}
},
"required": [
"config_dir",
"datastore_path",
"id",
"listen_addr",
"raft_servers"
]
},
"Lgif": {
"description": "Logically grouped information file from a keeper node",
"type": "object",
"properties": {
"first_log_idx": {
"description": "Index of the first log entry in the current log segment",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"first_log_term": {
"description": "Term of the leader when the first log entry was created",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"last_committed_log_idx": {
"description": "Index of the last committed log entry",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"last_log_idx": {
"description": "Index of the last log entry in the current log segment",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"last_log_term": {
"description": "Term of the leader when the last log entry was created",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"last_snapshot_idx": {
"description": "Index of the most recent snapshot taken",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"leader_committed_log_idx": {
"description": "Index of the last committed log entry from the leader's perspective",
"type": "integer",
"format": "uint64",
"minimum": 0
},
"target_committed_log_idx": {
"description": "Target index for log commitment during replication or recovery",
"type": "integer",
"format": "uint64",
"minimum": 0
}
},
"required": [
"first_log_idx",
"first_log_term",
"last_committed_log_idx",
"last_log_idx",
"last_log_term",
"last_snapshot_idx",
"leader_committed_log_idx",
"target_committed_log_idx"
]
},
"LogConfig": {
"type": "object",
"properties": {
"count": {
"type": "integer",
"format": "uint",
"minimum": 0
},
"errorlog": {
"type": "string",
"format": "Utf8PathBuf"
},
"level": {
"$ref": "#/components/schemas/LogLevel"
},
"log": {
"type": "string",
"format": "Utf8PathBuf"
},
"size": {
"type": "integer",
"format": "uint16",
"minimum": 0
}
},
"required": [
"count",
"errorlog",
"level",
"log",
"size"
]
},
"LogLevel": {
"type": "string",
"enum": [
"trace",
"debug"
]
},
"Macros": {
"type": "object",
"properties": {
"cluster": {
"type": "string"
},
"replica": {
"$ref": "#/components/schemas/ServerId"
},
"shard": {
"type": "integer",
"format": "uint64",
"minimum": 0
}
},
"required": [
"cluster",
"replica",
"shard"
]
},
"RaftConfig": {
"description": "Keeper raft configuration information",
"type": "object",
"properties": {
"keeper_servers": {
"type": "array",
"items": {
"$ref": "#/components/schemas/KeeperServerInfo"
},
"uniqueItems": true
}
},
"required": [
"keeper_servers"
]
},
"RaftServerConfig": {
"type": "object",
"properties": {
"hostname": {
"$ref": "#/components/schemas/ClickhouseHost"
},
"id": {
"$ref": "#/components/schemas/KeeperId"
},
"port": {
"type": "integer",
"format": "uint16",
"minimum": 0
}
},
"required": [
"hostname",
"id",
"port"
]
},
"RaftServerSettings": {
"type": "object",
"properties": {
"host": {
"$ref": "#/components/schemas/ClickhouseHost"
},
"id": {
"$ref": "#/components/schemas/KeeperId"
}
},
"required": [
"host",
"id"
]
},
"RaftServers": {
"type": "object",
"properties": {
"servers": {
"type": "array",
"items": {
"$ref": "#/components/schemas/RaftServerConfig"
}
}
},
"required": [
"servers"
]
},
"RemoteServers": {
"type": "object",
"properties": {