This topic summarizes the parameters in OceanBase Database Proxy (ODP).
Parameters related to configurations
| Parameter | Description |
|---|---|
| refresh_json_config | Specifies whether to force update the JavaScript Object Notation (JSON) information when the Config Server is refreshed. |
| refresh_rslist | Specifies whether to update all RootService lists when the Config Server is refreshed. |
| refresh_idc_list | Specifies whether to update all Internet Data Center (IDC) lists when the Config Server is refreshed. |
Parameters related to intervals
| Parameter | Description |
|---|---|
| proxy_info_check_interval | Specifies the interval for ODP to detect configuration updates. |
| proxy_hot_upgrade_check_interval | Specifies the interval for ODP to detect the hot upgrade status. |
| cache_cleaner_clean_interval | Specifies the interval for the cache cleaner to clear the cache. |
| server_state_refresh_interval | Specifies the interval for refreshing the status of OceanBase Database to obtain the latest status of zones or OBServer nodes. |
| metadb_server_state_refresh_interval | Specifies the interval for refreshing the status of the MetaDB node to obtain the latest status of zones or OBServer nodes. |
| config_server_refresh_interval | Specifies the interval for refreshing the config server. |
| idc_list_refresh_interval | Specifies the interval for refreshing the IDC list to obtain the latest region and IDC information. |
| stat_table_sync_interval | Specifies the interval for synchronizing statistics to the ob_all_proxy_stat table. |
| stat_dump_interval | Specifies the interval for recording statistics in logs. |
| cluster_count_high_water_mark | Specifies the maximum number of OceanBase clusters that can be accessed. When the number of accessed clusters exceeds this value, ODP evicts clusters based on the least recently used (LRU) algorithm. |
| cluster_expire_time | Specifies the expiration time of cluster information. |
| ldg_info_refresh_interval | Specifies the interval for refreshing server information. |
| read_stale_retry_interval | Specifies the retry interval for reading stale data. |
Parameters related to hot upgrade
| Parameter | Description |
|---|---|
| fetch_proxy_bin_random_time | Specifies the maximum random wait time for obtaining binary files during a hot upgrade. |
| fetch_proxy_bin_timeout | Specifies the timeout period for obtaining binary files during a hot upgrade. |
| hot_upgrade_failure_retries | Specifies the number of retries allowed after a hot upgrade fails. |
| hot_upgrade_rollback_timeout | Specifies the timeout period for rolling back a hot upgrade. |
| hot_upgrade_exit_timeout | Specifies the timeout period for a graceful exit. |
| delay_exit_time | Specifies the delay time for ODP to exit. |
Parameters related to logs
| Parameter | Description |
|---|---|
| log_file_percentage | Specifies the maximum percentage of available space occupied by log files of ODP. |
| log_cleanup_interval | Specifies the interval for clearing log files. |
| log_dir_size_threshold | Specifies the maximum available space of the directory where ODP logs are stored. |
| max_syslog_file_time | Specifies the maximum retention period of archive logs. |
| max_syslog_file_count | Specifies the maximum number of archive log files that can be retained. |
| enable_syslog_file_compress | Specifies whether to enable compression for archive logs. |
| enable_syslog_wf | Specifies whether to print logs at or above the WARN level in obproxy.log to a separate log file (obproxy.log.wf). |
Parameters related to resource pools
| Parameter | Description |
|---|---|
| need_convert_vip_to_tname | Specifies whether to convert a virtual IP address (VIP) into the tenant name. |
| long_async_task_timeout | Specifies the timeout period of long asynchronous tasks. |
| short_async_task_timeout | Specifies the timeout period of short asynchronous tasks. |
| username_separator | Specifies the separator for usernames used by the client to connect to ODP. |
Parameters related to sessions
| Parameter | Description |
|---|---|
| enable_client_connection_lru_disconnect | Specifies whether to accept new connections when the number of client connections reaches the upper limit. |
| client_max_connections | Specifies the maximum number of client connections supported by ODP. |
| observer_query_timeout_delta | Specifies the value added to the ob_query_timeout parameter of OceanBase Database to adapt to the delay in network transmission. |
| enable_cluster_checkout | Specifies whether to enable cluster name verification. |
| enable_proxy_scramble | Specifies whether to enable proxy scrambling. |
| enable_client_ip_checkout | Specifies whether to verify the client IP address. |
| proxy_id | Specifies the ID of an ODP to ensure that the client session IDs generated by different ODPs do not conflict with each other. |
| client_session_id_version | Specifies the version of the format used for generating client session IDs. |
Parameters related to connections
| Parameter | Description |
|---|---|
| connect_observer_max_retries | Specifies the maximum number of retries for ODP to connect to OceanBase Database. |
| connection_diagnosis_option | Specifies an option that allows you to enable diagnostics for the current connection by using a bit. |
Parameters related to the network
| Parameter | Description |
|---|---|
| net_accept_threads | Specifies the number of threads that run accept tasks. |
| net_config_poll_timeout | Specifies the timeout period of network events. |
| default_inactivity_timeout | Specifies the default timeout period of TCP connections. |
| sock_recv_buffer_size_out | Specifies the size of the socket receive buffer. |
| sock_send_buffer_size_out | Specifies the size of the socket send buffer. |
| sock_option_flag_out | Specifies the parameter for the TCP connection between ODP and OceanBase Database. |
| sock_packet_mark_out | Specifies the packet mark used when the socket sends a packet. |
| sock_packet_tos_out | Specifies the Type of Service (TOS) used when the socket sends a packet. |
| server_tcp_init_cwnd | Specifies the initial congestion window specified when a TCP connection to OceanBase Database was created. |
| server_tcp_keepidle | Specifies the keepalive idle time for a TCP connection between ODP and OceanBase Database. |
| server_tcp_keepintvl | Specifies the keepalive interval for a TCP connection between ODP and OceanBase Database. |
| server_tcp_keepcnt | Specifies the number of keepalive detections for a TCP connection between ODP and OceanBase Database. |
| server_tcp_user_timeout | Specifies the user timeout period for a TCP connection between ODP and OceanBase Database. |
| client_sock_option_flag_out | Specifies the parameter for the TCP connection between a client and ODP. |
| client_tcp_keepidle | Specifies the keepalive idle time for a TCP connection between ODP and a client. |
| client_tcp_keepintvl | Specifies the keepalive interval for a TCP connection between ODP and a client. |
| client_tcp_keepcnt | Specifies the number of keepalive detections for a TCP connection between ODP and a client. |
| client_tcp_user_timeout | Specifies the user timeout period for a TCP connection between ODP and a client. |
Parameters related to initialization
| Parameter | Description |
|---|---|
| proxy_mem_limited | Specifies the maximum runtime memory of ODP. |
| stack_size | Specifies the size of the thread stack. |
| routing_cache_mem_limited | Specifies the maximum memory for the ODP route cache, such as the table cache and address cache. |
| work_thread_num | Specifies the number of worker threads. Specify this parameter when you initialize worker threads. |
| task_thread_num | Specifies the number of task threads. |
| block_thread_num | Specifies the number of blocked task threads. Specify this parameter when you initialize threads. |
| grpc_thread_num | Specifies the number of GRPC threads. |
| grpc_client_num | Specifies the number of GRPC clients. |
| shard_scan_thread_num | Specifies the number of threads for scanning ODP shards. |
| automatic_match_work_thread | Specifies whether to automatically create worker threads based on the number of CPU cores. |
| enable_strict_kernel_release | Specifies whether to verify the OS kernel. |
| max_log_file_size | Specifies the maximum size of a single log file in ODP. |
Parameters related to request response conversion
| Parameter | Description |
|---|---|
| default_buffer_water_mark | Specifies the watermark for controlling the internal buffer size of ODP. ODP processes the requests only after their size exceeds this threshold. |
| tunnel_request_size_threshold | Specifies the maximum size of requests received by ODP. |
| request_buffer_length | Specifies the maximum length of the request buffer allocated to each request. |
| flow_high_water_mark | Specifies the high watermark for triggering throttling. |
| flow_low_water_mark | Specifies the low watermark for stopping throttling. |
| flow_consumer_reenable_threshold | Specifies the maximum number of times the configuration data for throttling in a tunnel can be forwarded. |
| flow_event_queue_threshold | Specifies the threshold of the event queue. |
| enable_flow_control | Specifies whether to enable throttling in a MySQL tunnel. |
Parameters related to statistics
| Parameter | Description |
|---|---|
| enable_trans_detail_stats | Specifies whether to enable transaction status statistics. |
| enable_sync_all_stats | Specifies whether to synchronize all statistics. |
| enable_report_session_stats | Specifies whether to report session-level statistics to the internal table. |
| enable_strict_stat_time | Specifies whether to enable the strict statistic time. |
| enable_cpu_topology | Specifies whether to enable the CPU topology to bind worker threads to the CPU. |
| enable_trace_stats | Specifies whether to enable MySQL tracing statistics. |
| slow_transaction_time_threshold | Specifies the time threshold for slow transactions. |
| slow_proxy_process_time_threshold | Specifies the execution time threshold for ODP to pre-execute queries. |
| query_digest_time_threshold | Specifies the time threshold for query execution. |
| slow_query_time_threshold | Specifies the execution time threshold for slow queries. |
Startup parameters
| Parameter | Description |
|---|---|
| ignore_local_config | Specifies whether to ignore all local cache files and start ODP by using a remote JSON file. |
| local_bound_ip | Specifies the IP address bound to ODP to listen on. |
| listen_port | Specifies the listening port of ODP. |
| ip_listen_mode | Specifies the listening mode of ODP. |
| local_bound_ipv6_ip | Specifies the IPv6 address bound to ODP. |
| obproxy_config_server_url | Specifies the URL of the Config Server. ODP can serve as a proxy for all clusters registered with the Config Server. |
| enable_get_rslist_remote | Specifies whether to obtain the RootService list from the remote server. |
| rootservice_cluster_name | Specifies the default name of the cluster of the RootService list. |
| rootservice_list | Specifies the RootService lists of OceanBase Database, in the ip1:sql_port1;ip2:sql_port2 format. |
Parameters related to tenants
| Parameter | Description |
|---|---|
| proxy_tenant_name | Specifies the default tenant name of the cloud user. |
Parameters related to blocklists
| Parameter | Description |
|---|---|
| enable_congestion | Specifies whether to enable the blocklist mechanism, which is enabled by default. |
| congestion_failure_threshold | Specifies whether to add an OBServer node to the blocklist. |
| congestion_fail_window | Specifies the statistical period for failures of OBServer nodes. |
| min_keep_congestion_interval | Specifies the shortest time to wait before an OBServer node is removed from the blocklist. |
| congestion_retry_interval | Specifies the retry interval for OBServer nodes in the alive-but-unavailable blocklist. |
| min_congested_connect_timeout | Specifies the minimum timeout period for OBServer nodes that are alive but unavailable. |
Parameters related to congestion
| Parameter | Description |
|---|---|
| server_detect_mode | Specifies the server detection mode. |
| server_detect_fail_threshold | Specifies the number of server detection attempts. |
| server_detect_refresh_interval | Specifies the interval for refreshing the server status. |
| detect_server_timeout | Specifies the timeout period for detecting whether OceanBase Database gives a response. |
| enable_bad_route_reject | Specifies whether to reject requests that cannot be routed. |
| enable_partition_table_route | Specifies whether to enable partitioned table-based routing for ODP. |
| compression_algorithm | Specifies the compression protocol and compression level of the OceanBase 2.0 protocol. |
| enable_compression_protocol | Specifies whether to enable the compression protocol. |
| enable_ob_protocol_v2 | Specifies whether to enable the OceanBase 2.0 protocol between ODP and OceanBase Database. OceanBase 2.0 is a proprietary transmission protocol developed based on the MySQL compression protocol. |
| enable_ob_protocol_v2_with_client | Specifies whether to enable the OceanBase 2.0 protocol between ODP and the client. OceanBase 2.0 is a proprietary transmission protocol developed based on the MySQL compression protocol. |
| enable_transaction_internal_routing | Specifies whether to enable distributed transaction routing. |
| enable_reroute | Specifies whether to enable rerouting. |
| enable_weak_reroute | Specifies whether to enable rerouting for weak-consistency reads. |
| ob_max_read_stale_time | Specifies the maximum latency allowed in weak-consistency reads. The default value is -1, which indicates that this feature is disabled. |
| enable_pl_route | Specifies whether to enable Procedural Language (PL) routing. |
| enable_cached_server | Specifies whether to use the cached server session in the case of no table entry. |
Parameters related to audit
| Parameter | Description |
|---|---|
| sqlaudit_mem_limited | Specifies the maximum memory for SQL audit. |
| internal_cmd_mem_limited | Specifies the maximum memory for responses to internal commands of ODP. The value 0 indicates no limit. |
Parameters related to debugging
| Parameter | Description |
|---|---|
| server_routing_mode | Specifies the routing mode of ODP. |
| syslog_level | Specifies the syslog level. |
| monitor_log_level | Specifies the monitoring log level. |
| xflush_log_level | Specifies the xflush log level. |
| enable_async_log | Specifies whether to enable asynchronous logs. |
| mem_leak_check_class_name | Specifies the names of classes to be monitored by the show proxymemory objpool command, which can be names in the free_list_name column of the command output. |
| mem_leak_check_mod_name | Specifies the names of modules to be monitored by the show proxymemory command, which can be names in the mod_name column of the command output. |
Parameters related to LDCs
| Parameter | Description |
|---|---|
| proxy_idc_name | Specifies the name of the IDC for IDC-based routing in ODP. |
| current_local_config_version | Specifies the local configuration version of the current ODP. |
Parameters related to monitoring
| Parameter | Description |
|---|---|
| monitor_item_limit | Specifies the maximum number of monitoring statistical items of ODP or the maximum number of metrics of Prometheus. |
| monitor_item_max_idle_period | Specifies the retention period of monitoring statistical items in the memory. |
| monitor_cost_ms_unit | Specifies whether to convert the unit of monitoring statistics to milliseconds. The default unit is microseconds. |
| monitor_stat_dump_interval | Specifies the interval for flushing monitoring statistics to logs. |
| monitor_stat_low_threshold | Specifies the low time threshold of tenant statistics. |
| monitor_stat_middle_threshold | Specifies the medium time threshold of tenant statistics. |
| monitor_stat_high_threshold | Specifies the high time threshold of tenant statistics. |
| enable_monitor_stat | Specifies whether to enable monitoring statistics. |
Parameters related to Prometheus
| Parameter | Description |
|---|---|
| prometheus_listen_port | Specifies the Prometheus listening port of ODP. |
| prometheus_cost_ms_unit | Specifies whether to convert the calculation unit of Prometheus to milliseconds. The default unit is microseconds. |
| prometheus_sync_interval | Specifies the interval for synchronizing Prometheus monitoring metrics to Prometheus Exporter. |
| enable_prometheus | Specifies whether to monitor Prometheus. |
| enable_extra_prometheus_metric | Specifies whether to enable network and routing metrics of Prometheus. |
| enable_causal_order_read | Specifies whether ODP selects a server by priority and synchronizes the security snapshot version as needed. |
Parameters related to cache
| Parameter | Description |
|---|---|
| partition_location_expire_relative_time | Specifies the expiration period of the partition location cache, in milliseconds. |
| enable_qa_mode | Specifies whether ODP can force expire all location caches. |
| check_tenant_locality_change | Specifies whether to enable the location cache to cache dirty data upon location changes. |
| enable_async_pull_location_cache | Specifies whether to asynchronously pull the location cache when dirty data is cached. |
Parameters related to SSL
| Parameter | Description |
|---|---|
| enable_client_ssl | Specifies whether ODP uses SSL to connect to the client. |
| enable_server_ssl | Specifies whether ODP uses SSL to connect to OceanBase Database. |
Parameters related to QoS
| Parameter | Description |
|---|---|
| enable_qos | Specifies whether to enable QoS for ODP. |
| qos_stat_clean_interval | Specifies the interval for clearing QoS statistics. |
| qos_stat_item_limit | Specifies the number of QoS statistical items of ODP. |
Parameters related to primary and standby databases
| Parameter | Description |
|---|---|
| enable_standby | Specifies whether to enable the standby database. |
Parameters related to sequences
| Parameter | Description |
|---|---|
| sequence_entry_expire_time | Specifies the validity period of sequences. |
| sequence_fail_retry_count | Specifies the number of retry failures allowed for sequences. |
| enable_sequence_prefetch | Specifies whether to prefetch sequences. |
| sequence_prefetch_threshold | Specifies the maximum cost for triggering prefetch. |
Parameters related to passwords
| Parameter | Description |
|---|---|
| obproxy_sys_password | Specifies the password of the root@proxysys user. |
| observer_sys_password | Specifies the password of the account (proxyro@sys) used by ODP to connect to the OceanBase cluster. |
| observer_sys_password1 | Specifies the password of the account (proxyro@sys) used by ODP to connect to the OceanBase cluster. |
Parameters related to O&M
| Parameter | Description |
|---|---|
| protocol_diagnosis_level | Specifies whether to enable protocol diagnostics and whether to output diagnostic information to logs. |
| route_diagnosis_level | Specifies the level of detail in routing diagnostics. |
Parameters related to RPC
| Parameter | Description |
|---|---|
| enable_obproxy_rpc_service | Specifies whether to enable the RPC service port. |
| rpc_enable_congestion | Specifies whether to enable OBServer blocklist processing for RPC requests. |
| rpc_enable_direct_expire_route_entry | Specifies whether to clean up expired routing information by force and not to use dirty data for asynchronous refresh. |
| rpc_enable_force_srv_black_list | Specifies whether to enable the blocklist for forced logon authentication. |
| rpc_enable_global_index | Specifies whether to enable the support by RPC requests for global index routing. |
| rpc_enable_parallel_handler | Specifies whether to enable the asynchronous execution framework. |
| rpc_enable_reroute | Specifies whether to enable RPC rerouting. |
| rpc_enable_retry_request_info_log | Specifies whether to print RPC request retry information. |
| rpc_force_srv_black_list | Specifies the blocklist for forced logon authentication. |
| rpc_listen_port | Specifies the RPC service listening port. |
| rpc_max_request_batch_size | Specifies the maximum number of requests allowed in a single batch. |
| rpc_max_server_table_entry_num | Specifies the maximum number of connections in the backend connection pool of the RPC processing module. |
| rpc_net_timeout_base | Specifies the benchmark sending rate, that is, the time (in ms) required for sending 1 byte of data. The minimum bandwidth is 200 Bps. If the parameter is set to a value lower than 200 Bps, the backend connection is abnormal and ODP removes the connection from the connection pool. |
| rpc_period_task_interval | Specifies the interval for ODP to execute periodic RPC processing tasks. RPC processing tasks mainly clean up requests in invalid state in the frontend and backend. |
| rpc_request_timeout | Specifies the default timeout period for sending a request, in us. |
| rpc_request_timeout_delta | Specifies the delta value of the timeout period for processing a request within ODP. |
| rpc_server_entry_expire_time | Specifies the idle timeout period for the backend connection pool. If there is no backend connection within the specified period of time, the backend connection pool automatically exits. |
| rpc_server_net_handler_expire_time | Specifies the timeout period for the backend connection to process a request. If no response is received within the specified period of time after a request is sent, ODP considers the connection abnormal and removes the connection from the connection pool. |
| rpc_server_net_invalid_time_us | Specifies the interval for sending pending requests in the backend connection. |
| rpc_server_net_max_pending_request | Specifies the number of requests to be sent in the backend connection. When the number of requests reaches the specified value within rpc_server_net_invalid_time_us, ODP considers the backend connection invalid and removes the connection from the connection pool. |
| rpc_srv_session_pool_inactive_timeout | Specifies the inactive timeout period for the server connection in the synchronization module. |
| rpc_support_key_partition_shard_request | Specifies whether to send an RPC request that involves cross-partition queries to all partitions when the target table is a KEY-partitioned table. |
Others
| Parameter | Description |
|---|---|
| enable_xa_route | Specifies whether to enable xa_start hold and route it to the partition accessed by the next DML statement. |
| normal_pl_update_threshold | Specifies the maximum number of partition location update tasks processed by ODP per second. |
| target_db_server | Specifies the IP addresses of OBServer nodes for which ODP applies forcible routing, in the ip0:port0,ip1:port1,ip2:port2;ip3:port3;ip4:port4 format. |
| proxy_local_cmd | Specifies the hot restart of ODP. |
| client_max_memory_size | Specifies the maximum size of memory dynamically allocated to client sessions. |
| delay_update_entry_interval | Specifies the interval for delaying the update of table or partition entries. |
| tenant_location_valid_time | Specifies the validity period of cached tenant information. |
| qa_mode_mock_public_cloud_slb_addr | Specifies the SLB address of the mock public cloud. |
| proxy_route_policy | Specifies the routing strategy of ODP, which defines the backend server to which client requests are routed for processing. |
| enable_cpu_isolate | Specifies whether to enable CPU isolation. |
| mysql_version | Specifies the version returned while connecting to a MySQL tenant. |
| proxy_primary_zone_name | Specifies the name of the primary zone for LDC-based routing in ODP. |
| enable_primary_zone | Specifies whether ODP performs routing based on the primary zone priorities of the tenant when routing calculation fails. |
| enable_performance_mode | Specifies whether to enable the performance mode. |
| enable_trace | Specifies whether to enable traces. |
| enable_stat | Specifies whether to enable statistics. |
| digest_sql_length | Specifies the length of recorded SQL statements. The value 0 specifies to record SQL statements with the default length. |
| obproxy_read_only | Specifies the read/write type. |
| obproxy_read_consistency | Specifies the target to which requests are sent. |
| enable_global_ps_cache | Specifies whether to use the global PS cache. |
| enable_read_write_split | Specifies whether to enable the read/write splitting mode. |
| enable_transaction_split | Specifies whether to support transaction splitting. |
| binlog_service_ip | Specifies the IP address of the binlog service, in the ip1:sql_port1 format. |
| ssl_attributes | The SSL attributes. |
| enable_index_route | Specifies whether to enable routing for the global index table based on global index keys in ODP. |
| sql_table_cache_expire_relative_time | Specifies the expiration time of the SQL table cache, in milliseconds. The value 0 indicates that the cache will never expire. |
| sql_table_cache_mem_limited | Specifies the maximum memory usage of the SQL table cache in ODP. |
| enable_cloud_full_username | Specifies whether to consider the account name used for logon as the username of the user. This parameter is used for cloud users. |
| enable_full_username | Specifies whether the username must contain the tenant name and cluster name. This parameter is used for non-cloud users. |
| skip_proxyro_check | Specifies whether to allow a client to use the proxyro@sys account for access. The value false indicates that a client cannot use this account for access. |
| skip_proxy_sys_private_check | Specifies whether ODP skips checking the private address of the system. |
| obproxy_force_parallel_query_dop | Used to adapt to the _force_parallel_query_dop parameter of OceanBase Database. |
| syslog_io_bandwidth_limit | Specifies the upper limit of disk I/O bandwidth allowed for ODP logging. ODP logging is throttled when its traffic exceeds the upper bandwidth limit. When throttling is triggered, the log REACH SYSLOG RATE LIMIT will be printed in obproxy.log. |
| enable_sharding | Specifies whether to use logical databases. |
Deleted parameters
| Parameter | Description | Remarks |
|---|---|---|
| enable_binlog_service | Specifies whether ODP sends binlog requests to OBLogProxy. | This parameter is deleted since ODP V4.2.2. |
| enable_connection_diagnosis | Specifies whether to enable connection diagnostics. | This parameter is deleted since ODP V4.2.2. |
| enable_abort_conn_info | Specifies whether ODP sends an error packet when a connection is aborted. | This parameter is deleted since ODP V4.2.3. |