EOS-26085: Redirect log to console

[ajay-paratmandali]

Signed-off-by: Ajay Paratmandali ajay.paratmandali@seagate.com

Problem Statement

• Log redirection to console

Design

• Redirect log to stdout and stderr driver_process.stdout.readline() allow to capture buffer console output of child process in parent process and poll check if child process is running or not. So if child process is running readline will get output and print it in console.

 while True:
        output = driver_process.stdout.readline()
        if driver_process.poll() is not None:
            break
        if output:
            print(output.strip().decode("utf-8"))
    exit(driver_process.poll())

Coding

• [x] Coding conventions are followed and code is consistent

Testing

• [ ] Unit and System Tests are added
• [x] Test Cases cover Happy Path, Non-Happy Path and Scalability
• [x] Testing was performed with RPM

Review Checklist

• [x] PR is self reviewed
• [x] JIRA number/GitHub Issue added to PR
• [x] Jira and state/status is updated and JIRA is updated with PR link
• [x] Check if the description is clear and explained
• [ ] Is there a change in filename/package/module or signature? [Y/N]:
• [ ] If yes for above point, is a notification sent to all other cortx components? [Y/N]
• [ ] Side effects on other features (deployment/upgrade)? [Y/N]
• [ ] Dependencies on other component(s)? [Y/N]
• If yes for above point, post link to the corresponding PR.

Review Checklist

• [ ] Is perfline test run and the report with and without the changes updated in the PR? [Y/N]:

Documentation

Checklist for Author

• [ ] Changes done to WIKI / Confluence page / Quick Start Guide

[mukhtar-inamdar]

please update the result of the test. of currently tested as well as SIGTERM test result.

[ajay-paratmandali]

Test case: Test 1: Send restart signal to process send SIGTERM signals to pod

NAME                                                 READY      STATUS    RESTARTS   AGE
cortx-ha-6d4fc596d8-5mhc4                3/3         Running         1          4m4s

container in pod get restart; R

Test 2 Redirect log Check if log are redirecting

[root@ssc-vm-g4-rhev4-0574 ~]# kubectl logs cortx-ha-6d4fc596d8-rtgzk cortx-ha-fault-tolerance
The driver process with pid 8, and args ['/usr/bin/python3', '/usr/lib/python3.6/site-packages/ha/fault_tolrance_driver.py', '--start'] started successfully.2022-02-11 08:16:50 fault_tolerance [8]: INFO [init] Starervice fault_tolerance
2022-02-11 08:16:50 fault_tolerance [8]: INFO [init] MessageBus initialized as kafka
2022-02-11 08:16:50 fault_tolerance [8]: INFO [init] MessageBus initialized as kafka
2022-02-11 08:16:50 fault_tolerance [8]: INFO [<module>] Starting the Fault Tolerance Monitor with PID 8...
2022-02-11 08:16:50 fault_tolerance [8]: INFO [start] Starting the daemon for cluster_event-consumer-thread
2022-02-11 08:16:50 fault_tolerance [8]: INFO [start] The daemon cluster_event-consumer-thread started succ
2022-02-11 08:16:50 fault_tolerance [8]: INFO [start] Starting the daemon for cluster_stop-consumer-thread.
2022-02-11 08:16:50 fault_tolerance [8]: INFO [start] The daemon cluster_stop-consumer-thread started succe
2022-02-11 08:16:50 fault_tolerance [8]: INFO [join] waiting for cluster_event-consumer-thread to exit...
2022-02-11 08:16:50 fault_tolerance [8]: INFO [process_message] Received the message from message bus: b"{''node', '_resource_name': 'f59a55016af943409063de03c691ecc3', '_event_type': 'online', '_k8s_container': Noid': 'cortx-data-ssc-vm-g4-rhev4-0574-6b755bb4bf-pbnxk', '_node': 'ssc-vm-g4-rhev4-0574.colo.seagate.com', e, '_timestamp': '1644470592'}"
2022-02-11 08:16:50 fault_tolerance [8]: INFO [init_evaluators] Initialize all the health evaluator element
2022-02-11 08:16:50 fault_tolerance [8]: INFO [init_evaluators] HealthEvaluator ha.core.system_health.healtter_health_evaluator.ClusterHealthEvaluator is initalized...

[ArchanaLimaye]

@ajay-paratmandali Please update the Design section with the details

[ArchanaLimaye]

"Unit and System Tests are added" is checked but I dont see any new test files If existing files cover this change mention those.

Also list all tests that were done and their observations.