- Add SharedStorageMonitor thread to periodically verify shared storage:
* Writes a temp file to the shared location and validates MD5 from all nodes.
* Skips nodes with unstable recent heartbeats; retries once; defers decision if any node is unreachable.
* Updates a cluster-wide stateful flag (shared_storage_on) only on conclusive checks.
- New CMAPI endpoints:
* PUT /cmapi/{ver}/cluster/check-shared-storage — orchestrates cross-node checks.
* GET /cmapi/{ver}/node/check-shared-file — validates a given file’s MD5 on a node.
* PUT /cmapi/{ver}/node/stateful-config — fast path to distribute stateful config updates.
- Introduce in-memory stateful config (AppStatefulConfig) with versioned flags (term/seq) and shared_storage_on flag:
* Broadcast via helpers.broadcast_stateful_config and enhanced broadcast_new_config.
* Config PUT is now validated with Pydantic models; supports stateful-only updates and set_mode requests.
- Failover behavior:
* NodeMonitor keeps failover inactive when shared_storage_on is false or cluster size < 3.
* Rebalancing DBRoots becomes a no-op when shared storage is OFF (safety guard).
- mcl status improvements: per-node 'state' (online/offline), better timeouts and error reporting.
- Routing/wiring: add dispatcher routes for new endpoints; add ClusterModeEnum.
- Tests: cover shared-storage monitor (unreachable nodes, HB-based skipping), node manipulation with shared storage ON/OFF, and server/config flows.
- Dependencies: add pydantic; minor cleanups and logging.
* feat(cmapi): add read_only param for API add node endpoint
* style(cmapi): fixes for string length and quotes
Add dbroots of other nodes to the read-only node
On every node change adjust dbroots in the read-only nodes
Fix logging (trace level) in tests
Remove ExeMgr from constants
Fix tests
Manually remove read-only node from ReadOnlyNodes on node removal (because nodes are only deactivated)
Review fixes (mostly switching to StrEnum analog before py3.11, also changes in ruff config)
Read-only nodes are now called read replica consistently
Don't write hostname into IP fields of the config like PMSx/IPAddr, pmx_WriteEngineServer/IPAddr
We calculate ReadReplicas by finding PMs without WriteEngineServer
In _replace_localhost, replace local IP addrs with resolved IP addrs and local hostnames -- with the resolved hostnames.
ModuleHostName/ModuleIPAddr is kept intact.
Keep only IPv4 in ActiveNodes/DesiredNodes/InactiveNodes
feat: add mock DNS resolution builder for testing hostname/IP mappings
* Fix _add_node_to_PMS: if node is already in PMS, save it to existing items to not miss it during the reconstruction of the list
* Make tests independent from CWD
Fixed for _add_Module_entries
Fixed node removal and tests
Fixes for node manipulation tests
Don't log trace_params in tracing logger, because it already has all this data
Don't print span attrs, it can contain lots of headers
Save small part of the response into the span, if the response was a JSON string
Added JSON logging of trace details into a separate file (to not spam the main log with machine readable stuff)
Record part of the response into the span
Set duration attribute in server spans
Log 404 errors
Colorize the traces (each span slightly changes the color of the parent span)
Improve trace visualization with duration formatting and notes for request/response pairs
refactor(ci): switch S3 uploading to AWS CLI for logging S3 link
docs: update README with to reflect changes in Drone pipeline
feat(env): add activate script for portable Python
fix(logging): log RequestException response body
* MCOL-5594: Interactive "mcs cluster stop" command for CMAPI. (#3024)
* MCOL-5594: Interactive "mcs cluster stop" command for CMAPI.
[add] NodeProcessController class to handle Node operations
[add] two endpoints: stop_dmlproc (PUT) and is_process_running (GET)
[add] NodeProcessController.put_stop_dmlproc method to separately stop DMLProc on primary Node
[add] NodeProcessController.get_process_running method to check if specified process running or not
[add] build_url function to helpers.py. It needed to build urls with query_params
[add] MCSProcessManager.gracefully_stop_dmlproc method
[add] MCSProcessManager.is_service_running method as a top level wrapper to the same method in dispatcher
[fix] MCSProcessManager.stop by using new gracefully_stop_dmlproc
[add] interactive option and mode to mcs cluster stop command
[fix] requirements.txt with typer version to 0.9.0 where supports various of features including "Annotated"
[fix] requirements.txt click version (8.1.3 -> 8.1.7) and typing-extensions (4.3.0 -> 4.8.0). This is dependencies for typer package.
[fix] multiple minor formatting, docstrings and comments
* MCOL-5594: Add new CMAPI transaction manager.
- [add] TransactionManager ContextDecorator to manage transactions in less code and in one place
- [add] TransactionManager to cli cluster stop command and to API cluster shutdown command
- [fix] id -> txn_id in ClusterHandler class
- [fix] ClusterHandler.shutdown class to use inside existing transaction
- [add] docstrings in multiple places
* MCOL-5594: Review fixes.
* fix(cmapi): MCOL-5594: Fix after testing.. (#3150)
- [fix] wrong invoke already imported constants and function from signal lib
