URL: https://github.com/SSSD/sssd/pull/5929
Author: sgoveas
Title: #5929: Tests: Add tests for poor man's backtrace
Action: synchronized
To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/5929/head:pr5929
git checkout pr5929
From 4c5b146029387780a65f09fa9a89526fac39c34d Mon Sep 17 00:00:00 2001
From: Steeve Goveas <sgov...@redhat.com>
Date: Sun, 5 Dec 2021 19:27:51 +0530
Subject: [PATCH] Tests: Add tests for poor man's backtrace
Tests are added to check that no duplicate backtrace is generated and it
is generated when
* no debug level is defined / default debug level
* debug level is set to 0 or 1
* no backtrace when debug level is >= 9
* backtrace can be disabled
Verifies: #5585
https://bugzilla.redhat.com/show_bug.cgi?id=1949149
https://bugzilla.redhat.com/show_bug.cgi?id=2021196
---
src/tests/multihost/alltests/pytest.ini | 1 +
.../multihost/alltests/test_backtrace.py | 167 ++++++++++++++++++
2 files changed, 168 insertions(+)
create mode 100644 src/tests/multihost/alltests/test_backtrace.py
diff --git a/src/tests/multihost/alltests/pytest.ini b/src/tests/multihost/alltests/pytest.ini
index ac127c07f3..8754deabef 100644
--- a/src/tests/multihost/alltests/pytest.ini
+++ b/src/tests/multihost/alltests/pytest.ini
@@ -25,6 +25,7 @@ markers =
ssh: Tests related to ssh responder
ldaplibdebuglevel: Test ldap_library_debug_level option
no_tier: test cases are not executed on any tier
+ backtrace: test poor man's backtrace in logs for debug level < 9
tier1: tier1 test cases with run time of aproximately 60 minutes
tier1_2: tier1 test cases split to keep runtime upto 60 minutes
tier2: tier2 test cases
diff --git a/src/tests/multihost/alltests/test_backtrace.py b/src/tests/multihost/alltests/test_backtrace.py
new file mode 100644
index 0000000000..15bd45bd29
--- /dev/null
+++ b/src/tests/multihost/alltests/test_backtrace.py
@@ -0,0 +1,167 @@
+"""Automation poor man's backtrace
+
+:requirement: Poor Man's Backtrace
+:casecomponent: sssd
+:subsystemteam: sst_idm_sssd
+:upstream: yes
+:bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1949149
+"""
+
+from __future__ import print_function
+import re
+import time
+import pytest
+from sssd.testlib.common.utils import sssdTools
+from sssd.testlib.common.expect import pexpect_ssh
+from constants import ds_instance_name
+
+
+@pytest.mark.usefixtures('setup_sssd', 'create_posix_usersgroups')
+@pytest.mark.backtrace
+@pytest.mark.tier1_2
+class TestPoorManBacktrace(object):
+ """ Check sssd backtrace feature """
+ def test_0001_bz2021196(self, multihost, backupsssdconf):
+ """
+ :title: avoid duplicate backtraces
+ :id: d4d8a0a0-ab90-4c8f-8087-95dc7ad3f3ae
+ :customerscenario: true
+ :bugzilla:
+ https://bugzilla.redhat.com/show_bug.cgi?id=2021196
+ https://bugzilla.redhat.com/show_bug.cgi?id=2021499
+ """
+ hostname = multihost.master[0].sys_hostname
+ bad_ldap_uri = "ldaps://typo.%s" % hostname
+ tools = sssdTools(multihost.client[0])
+ domain_params = {'ldap_uri': bad_ldap_uri}
+ tools.sssd_conf('domain/%s' % ds_instance_name, domain_params)
+ tools.clear_sssd_cache()
+ logfile = '/var/log/sssd/sssd_nss.log'
+ cmd = f'getent passwd fakeuser@{ds_instance_name}'
+ multihost.client[0].run_command(cmd, raiseonerr=False)
+ msg = 'BACKTRACE DUMP ENDS HERE'
+ msg2 = '... skipping repetitive backtrace ...'
+ pattern = re.compile(fr'{msg}')
+ pattern2 = re.compile(fr'{msg2}')
+ log_str1 = multihost.client[0].get_file_contents(logfile). \
+ decode('utf-8')
+ multihost.client[0].run_command(f'> {logfile}')
+ multihost.client[0].run_command(cmd, raiseonerr=False)
+ time.sleep(2)
+ log_str2 = multihost.client[0].get_file_contents(logfile). \
+ decode('utf-8')
+ # Check the backtrace is dumped first time and no backtrace is skipped
+ assert pattern.search(log_str1) and not pattern2.search(log_str1)
+ # Check there is no new backtrace with the same issue and repeative
+ # backtrace is skipped
+ assert pattern2.search(log_str2) and not pattern.search(log_str2)
+
+ def test_0001_bz1949149(self, multihost, backupsssdconf):
+ """
+ :title: backtrace is disabled if debug level >= 9
+ :id: 50f2d501-3296-4229-86a0-b81844381637
+ """
+ section = "domain/%s" % ds_instance_name
+ param = {'debug_level': '9'}
+ serv_list = ['sssd', section, 'nss', 'pam']
+ tools = sssdTools(multihost.client[0])
+ for serv in serv_list:
+ tools.sssd_conf(serv, param)
+ tools.clear_sssd_cache()
+ cmd_kill = 'kill -SIGUSR2 $(pidof sssd)'
+ multihost.client[0].run_command(cmd_kill, raiseonerr=False)
+ cmd = f'getent passwd fakeuser@{ds_instance_name}'
+ multihost.client[0].run_command(cmd, raiseonerr=False)
+ log_list = ['sssd', 'sssd_example1', 'sssd_nss', 'sssd_pam']
+ for logfilename in log_list:
+ log = f'/var/log/sssd/{logfilename}.log'
+ log_str = multihost.client[0].get_file_contents(log).decode(
+ 'utf-8')
+ find = re.compile(r'BACKTRACE DUMP ENDS HERE')
+ assert not find.search(log_str)
+
+ def test_0002_bz1949149(self, multihost, backupsssdconf):
+ """
+ :title: set debug_backtrace_enabled false
+ :id: b8084e03-5e21-45ee-a463-65ab537fa110
+ """
+ section = "domain/%s" % ds_instance_name
+ param = {'debug_backtrace_enabled': 'false'}
+ serv_list = ['sssd', section, 'nss', 'pam']
+ tools = sssdTools(multihost.client[0])
+ for serv in serv_list:
+ tools.sssd_conf(serv, param)
+ tools.clear_sssd_cache()
+ cmd_kill = 'kill -SIGUSR2 $(pidof sssd)'
+ multihost.client[0].run_command(cmd_kill, raiseonerr=False)
+ cmd = f'getent passwd fakeuser@{ds_instance_name}'
+ multihost.client[0].run_command(cmd, raiseonerr=False)
+ log_list = ['sssd', 'sssd_example1', 'sssd_nss', 'sssd_pam']
+ for logfilename in log_list:
+ log = f'/var/log/sssd/{logfilename}.log'
+ log_str = multihost.client[0].get_file_contents(log).decode(
+ 'utf-8')
+ find = re.compile(r'BACKTRACE DUMP ENDS HERE')
+ assert not find.search(log_str)
+
+ def test_0003_bz1949149(self, multihost, backupsssdconf):
+ """
+ :title: backtrace level is 0 with debug level set to 0
+ :id: 4376d596-a613-447c-8f85-e3f3fbc05728
+ """
+ section = "domain/%s" % ds_instance_name
+ param = {'debug_level': '0'}
+ serv_list = ['sssd', section, 'nss', 'pam']
+ tools = sssdTools(multihost.client[0])
+ for serv in serv_list:
+ tools.sssd_conf(serv, param)
+ param = {'ldap_uri': 'typo.test_0004_bz1949149'}
+ tools.sssd_conf(section, param)
+ # stop sssd, delete logs and cache, start sssd
+ tools.clear_sssd_cache(start=False)
+ multihost.client[0].run_command('systemctl start sssd',
+ raiseonerr=False)
+ log_list = ['sssd', f'sssd_{ds_instance_name}', 'sssd_nss', 'sssd_pam']
+ find1 = re.compile(r'BACKTRACE DUMP ENDS HERE')
+ find2 = re.compile(r'.0x0010.')
+ for logfilename in log_list:
+ log = f'/var/log/sssd/{logfilename}.log'
+ log_str = multihost.client[0].get_file_contents(log). \
+ decode('utf-8')
+ log_lines = log_str.splitlines()
+ # Check only error of level 0x0010 generates backtrace
+ for index, line in enumerate(log_lines):
+ if find1.search(line):
+ log_level = log_lines[index - 1]
+ assert find2.search(log_level)
+
+ def test_0004_bz1949149(self, multihost, backupsssdconf):
+ """
+ :title: backtrace level is 1 with debug level set to 1
+ :id: 8a8adcdd-63bc-4a64-83cd-5c7b76fe745a
+ """
+ section = "domain/%s" % ds_instance_name
+ param = {'debug_level': '1'}
+ serv_list = ['sssd', section, 'nss', 'pam']
+ tools = sssdTools(multihost.client[0])
+ for serv in serv_list:
+ tools.sssd_conf(serv, param)
+ param = {'ldap_uri': 'typo.test_0004_bz1949149'}
+ tools.sssd_conf(section, param)
+ tools.clear_sssd_cache(start=False)
+ multihost.client[0].run_command('systemctl start sssd',
+ raiseonerr=False)
+ log_list = ['sssd', f'sssd_{ds_instance_name}', 'sssd_nss', 'sssd_pam']
+ find1 = re.compile(r'BACKTRACE DUMP ENDS HERE')
+ find2 = re.compile(r'.0x0010.')
+ find3 = re.compile(r'.0x0020.')
+ for logfilename in log_list:
+ log = f'/var/log/sssd/{logfilename}.log'
+ log_str = multihost.client[0].get_file_contents(log). \
+ decode('utf-8')
+ log_lines = log_str.splitlines()
+ # Check only error of level 0x0010 and 0x0020 generates backtrace
+ for index, line in enumerate(log_lines):
+ if find1.search(line):
+ log_level = log_lines[index - 1]
+ assert find2.search(log_level) or find3.search(log_level)
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