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Check agent log for errors; install test libraries #2787

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merged 6 commits into from
Mar 22, 2023

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narrieta
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Added a check for errors in the agent's log after all test suites have been executed.

Installed the test agent under ~/bin/azurelinuxagent; now tests can use the agent as a library (e.g. query the goal state, get the distro info, use systemd utilities, etc). Added that location to PYTHONPATH.

self._log.info(
"Test suite parameters: [test_suites: %s] [skip_setup: %s] [collect_logs: %s]",
[t.name for t in self.context.test_suites], self.context.skip_setup, self.context.collect_logs) # pylint: disable=E1133
"Runbook variables:\n%s",
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several variables were added and not logged; now i'm logging the entire set

@@ -265,23 +269,27 @@ def _setup_node(self) -> None:
self._log.info("Resource Group: %s", self.context.vm.resource_group)
self._log.info("")

self._install_tools_on_node()
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I merged _install_agent_on_node and _install_tools_on_node into _setup_node and added code to install the test libraries and agent

@@ -72,6 +72,14 @@ else
fi
echo "Service name: $service_name"

#
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There was a race condition between get-agent-path and the agent service restart a few lines below (get-agent-path uses the pid file of the agent in its logic) so I moved the initialization here, before we stop and restart the service

#
echo "Verifying agent installation..."

PYTHONPATH=$(get-agent-pythonpath)
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Now this is done in ~/bin/agent-dev so that all tests can benefit from this.

Also, now we set the path to the test agent instead of the agent installed in the image. The test agent is the current code, while the installed agent varies wildly across all the distros we test, which makes using considerably more difficult.

# 2023-03-15T20:47:56.688981Z INFO ExtHandler ExtHandler [CGW] The agent's process is not within a memory cgroup
#
{
'message': r"\[CGW\]\s*(The (CPU|memory) cgroup controller is not mounted)|(The agent's process is not within a (CPU|memory) cgroup)",
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I'm following up an issue with this rule. I'll post an update to this PR once I fix it

#
ignore_rules = [
#
# NOTE: This list was taken from the older agent tests and needs to be cleaned up. Feel free to un-comment rules as new tests are added.
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Note this

@@ -52,10 +57,19 @@ def generate_ssh_key(private_key_file: Path):
def get_architecture(self):
return self.run_command("uname -m").rstrip()

def copy(self, source: Path, target: Path, remote_source: bool = False, remote_target: bool = False, recursive: bool = False):
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This interface was a little hard to use, so I split this method into copy_to_node and copy_from_node

# the test modules we copied to ~/bin.
#
#
echo "Creating ~/bin/agent-env to set PATH and PYTHONPATH"
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@narrieta narrieta Mar 17, 2023

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I moved this to its own file (agent-env) instead of adding it directly to .bash_profile. It turns out that in some distros (e.g. Mariner) .bash_profile references undefined variables, and that was adding some really weird error messages to our logs.

I'm still adding agent-env to .bash_profile to help with interactive debugging sessions. If you ssh to a test machine, just keep in mind PATH and PYTHONPATH are setup to the same values as in the test runs (e.g. 'python3' will invoke Pypy, instead of the Python installed on the image)

If you need to use the Python installed in the image, you can find it with the which command:

$ which -a python3
/home/nam/bin/python3
/usr/bin/python3
/bin/python3
$ 

# Copy the test tools
tools_path = self.context.test_source_directory/"orchestrator"/"scripts"
tools_target_path = Path("~/bin")
self._log.info("Copying %s to %s:%s", Path("~/bin/pypy3.7.tar.bz2"), self.context.node.name, tools_target_path)
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Here we copy tools, can we change respectively.

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thanks! fixed

record.text = dictionary["text"]
record.when = dictionary["when"]
record.level = dictionary["level"]
record.level = dictionary["level"]
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duplicate

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thanks! fixed

maddieford
maddieford previously approved these changes Mar 20, 2023
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codecov bot commented Mar 21, 2023

Codecov Report

Merging #2787 (5099203) into develop (e9b51d7) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #2787   +/-   ##
========================================
  Coverage    71.99%   71.99%           
========================================
  Files          104      104           
  Lines        15857    15857           
  Branches      2273     2273           
========================================
  Hits         11417    11417           
  Misses        3915     3915           
  Partials       525      525           

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@narrieta narrieta merged commit 1640510 into Azure:develop Mar 22, 2023
@narrieta narrieta deleted the agent-log branch March 22, 2023 17:13
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3 participants