Dalibo released yesterday a new version of the temBoard Agent (Version 7.4) It fixes the following error, which was introduced with temBoard Agent (Version 7.3).
2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: <class 'TypeError'>: Object of type 'datetime' is not JSON serializable 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: Traceback (most recent call last): 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: File "/usr/lib/python3.6/site-packages/temboardagent/toolkit/taskmanager.py", line 882, in exec_worker 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: res = getattr(sys.modules[module], function)(*args, **kws) 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: File "/usr/lib/python3.6/site-packages/temboardagent/toolkit/taskmanager.py", line 1046, in wrapper 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: return function(app=self.app, *a, **kw) 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: File "/usr/lib/python3.6/site-packages/temboardagent/plugins/monitoring/__init__.py", line 270, in monitoring_collector_worker 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: output 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: File "/usr/lib/python3.6/site-packages/temboardagent/plugins/monitoring/db.py", line 49, in add_metric 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: (time, json.dumps(data)) 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: File "/usr/lib64/python3.6/json/__init__.py", line 231, in dumps 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: return _default_encoder.encode(obj) 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: File "/usr/lib64/python3.6/json/encoder.py", line 199, in encode 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: chunks = self.iterencode(o, _one_shot=True) 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: File "/usr/lib64/python3.6/json/encoder.py", line 257, in iterencode 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: return _iterencode(o, 0) 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: File "/usr/lib64/python3.6/json/encoder.py", line 180, in default 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: o.__class__.__name__) 2020-11-19 06:19:49,376 temboardagent[531]: [taskmanager] ERROR: TypeError: Object of type 'datetime' is not JSON serializable
The issue with that error is that some metrics are not gathered correctly, for example the Instance size, which is quite important from my point of view. In the following graph you can see it clearly that during the time when the agent 7.3 was running, the Instance size metric was not gathered. After upgrading the agent to 7.4 it worked correctly again.
To fix this issue, just grep the temBoard agent 7.4 (temboard-agent-7.4-1.el7.noarch.rpm) from the following link and apply it with yum afterwards.
In case you are on CentOS 7, use this one
https://yum.dalibo.org/labs/CentOS7-x86_64/
In case you are on CentOS 8, use this one
https://yum.dalibo.org/labs/CentOS8-x86_64/
Now stop all agents that are running on your host.
$ systemctl -l | grep temboard | grep -v system- | awk '{ print $1 }' | while read i
do
sudo systemctl stop $i
done
The update of the temBoard agent is very easy. Just run the yum update/localupdate depending of how you installed it. Depending on your installation, it might install automatically some python3-libs as well.
$ sudo yum -y localupdate temboard-agent-7.4-1.el7.noarch.rpm Loaded plugins: enabled_repos_upload, langpacks, package_upload, product-id, search-disabled-repos, subscription-manager Examining temboard-agent-7.4-1.el7.noarch.rpm: temboard-agent-7.4-1.el7.noarch Marking temboard-agent-7.4-1.el7.noarch.rpm as an update to temboard-agent-7.0-1.el7.noarch Resolving Dependencies --> Running transaction check ---> Package temboard-agent.noarch 0:7.0-1.el7 will be updated ---> Package temboard-agent.noarch 0:7.4-1.el7 will be an update --> Processing Dependency: python(abi) = 3.6 for package: temboard-agent-7.4-1.el7.noarch epel/x86_64/metalink | 29 kB 00:00:00 epel | 4.7 kB 00:00:00 rhel-7-server-extras-rpms | 2.0 kB 00:00:00 rhel-7-server-optional-rpms | 2.0 kB 00:00:00 rhel-7-server-rh-common-rpms | 2.1 kB 00:00:00 rhel-7-server-rpms | 2.0 kB 00:00:00 rhel-7-server-satellite-tools-6.7-rpms | 2.1 kB 00:00:00 rhel-7-server-supplementary-rpms | 2.3 kB 00:00:00 rhel-server-rhscl-7-rpms | 2.3 kB 00:00:00 (1/2): epel/x86_64/updateinfo | 1.0 MB 00:00:00 (2/2): epel/x86_64/primary_db | 6.9 MB 00:00:00 --> Processing Dependency: /usr/bin/python3 for package: temboard-agent-7.4-1.el7.noarch --> Processing Dependency: python3-psycopg2 for package: temboard-agent-7.4-1.el7.noarch --> Processing Dependency: python3-setuptools for package: temboard-agent-7.4-1.el7.noarch --> Running transaction check ---> Package python3.x86_64 0:3.6.8-13.el7 will be installed --> Processing Dependency: python3-libs(x86-64) = 3.6.8-13.el7 for package: python3-3.6.8-13.el7.x86_64 --> Processing Dependency: python3-pip for package: python3-3.6.8-13.el7.x86_64 --> Processing Dependency: libpython3.6m.so.1.0()(64bit) for package: python3-3.6.8-13.el7.x86_64 ---> Package python3-psycopg2.x86_64 0:2.7.7-2.el7 will be installed ---> Package python3-setuptools.noarch 0:39.2.0-10.el7 will be installed --> Running transaction check ---> Package python3-libs.x86_64 0:3.6.8-13.el7 will be installed ---> Package python3-pip.noarch 0:9.0.3-7.el7_8 will be installed --> Finished Dependency Resolution Dependencies Resolved ====================================================================================================================================================================== Package Arch Version Repository Size ====================================================================================================================================================================== Updating: temboard-agent noarch 7.4-1.el7 /temboard-agent-7.4-1.el7.noarch 945 k Installing for dependencies: python3 x86_64 3.6.8-13.el7 rhel-7-server-rpms 69 k python3-libs x86_64 3.6.8-13.el7 rhel-7-server-rpms 7.0 M python3-pip noarch 9.0.3-7.el7_8 rhel-7-server-rpms 1.8 M python3-psycopg2 x86_64 2.7.7-2.el7 epel 157 k python3-setuptools noarch 39.2.0-10.el7 rhel-7-server-rpms 629 k Transaction Summary ====================================================================================================================================================================== Install ( 5 Dependent packages) Upgrade 1 Package Total size: 10 M Total download size: 9.6 M Downloading packages: (1/5): python3-3.6.8-13.el7.x86_64.rpm | 69 kB 00:00:00 (2/5): python3-libs-3.6.8-13.el7.x86_64.rpm | 7.0 MB 00:00:00 (3/5): python3-pip-9.0.3-7.el7_8.noarch.rpm | 1.8 MB 00:00:00 (4/5): python3-setuptools-39.2.0-10.el7.noarch.rpm | 629 kB 00:00:00 (5/5): python3-psycopg2-2.7.7-2.el7.x86_64.rpm | 157 kB 00:00:00 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- Total 17 MB/s | 9.6 MB 00:00:00 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : python3-libs-3.6.8-13.el7.x86_64 1/7 Installing : python3-3.6.8-13.el7.x86_64 2/7 Installing : python3-setuptools-39.2.0-10.el7.noarch 3/7 Installing : python3-pip-9.0.3-7.el7_8.noarch 4/7 Installing : python3-psycopg2-2.7.7-2.el7.x86_64 5/7 Updating : temboard-agent-7.4-1.el7.noarch 6/7 You must restart manually temboard-agent services. Cleanup : temboard-agent-7.0-1.el7.noarch 7/7 Uploading Package Profile Loaded plugins: langpacks, product-id, subscription-manager Verifying : python3-psycopg2-2.7.7-2.el7.x86_64 1/7 Verifying : temboard-agent-7.4-1.el7.noarch 2/7 Verifying : python3-setuptools-39.2.0-10.el7.noarch 3/7 Verifying : python3-3.6.8-13.el7.x86_64 4/7 Verifying : python3-libs-3.6.8-13.el7.x86_64 5/7 Verifying : python3-pip-9.0.3-7.el7_8.noarch 6/7 Verifying : temboard-agent-7.0-1.el7.noarch 7/7 Dependency Installed: python3.x86_64 0:3.6.8-13.el7 python3-libs.x86_64 0:3.6.8-13.el7 python3-pip.noarch 0:9.0.3-7.el7_8 python3-psycopg2.x86_64 0:2.7.7-2.el7 python3-setuptools.noarch 0:39.2.0-10.el7 Updated: temboard-agent.noarch 0:7.4-1.el7 Complete! Uploading Enabled Repositories Report Loaded plugins: langpacks, product-id, subscription-manager
Check if the package was updated successfully.
$ rpm -qa | grep temboard temboard-agent-7.4-1.el7.noarch
After the update is done, start/restart the agents.
$./restart-agents.sh INFO: Running systemctl reset-failed and daemon-reload running INFO: Search for temboard-agent files in the /etc/systemd/ directory /etc/systemd/system/multi-user.target.wants/temboard-agent@12-pg55011.service /etc/systemd/system/multi-user.target.wants/temboard-agent@12-pg55012.service /etc/systemd/system/multi-user.target.wants/temboard-agent@12-pg55013.service /etc/systemd/system/multi-user.target.wants/temboard-agent@12-pg55014.service INFO: Restarting temboard-agent@12-pg55011.service INFO: Restarting temboard-agent@12-pg55012.service INFO: Restarting temboard-agent@12-pg55013.service INFO: Restarting temboard-agent@12-pg55014.service
This is the script I use for doing that.
$ cat restart-agents.sh
#!/bin/bash -eu
#------------------------------------------------------------------------------------------------------------------------#
#-- Author: William
#--
#-- Purpose: Restart temBoard Agents
#--
#-- Debugging
# set -x
#------------------------------------------------------------------------------------------------------------------------#
if ! hash sudo systemctl &>/dev/null; then
echo "ERROR: You must restart manually temboard-agent services" >&2
exit 0
fi
echo "INFO: Running systemctl reset-failed and daemon-reload"
sudo systemctl reset-failed
sudo systemctl daemon-reload
sudo systemctl is-system-running
if ! sudo systemctl is-system-running &>/dev/null ; then
echo "ERROR: You must restart manually temboard-agent services" >&2
echo "ERROR: Check with sudo systemctl list-units --state=failed"
echo "ERROR: Correct it, and run afterwards sudo systemctl reset-failed"
exit 0
fi
#------------------------------------------------------------------------------------------------------------------------#
prefix=temboard-agent@
# search for files in the /etc/systemd/ directory
echo "INFO: Search for temboard-agent files in the /etc/systemd/ directory"
sudo find /etc/systemd/system/multi-user.target.wants/ -name "${prefix}*"
active_units="$(sudo systemctl --all --plain list-units ${prefix}* | grep -Po ${prefix}.*\\.service ||:)"
if [ -z "${active_units}" ] ; then
echo "ERROR: No units found for temboard-agent" >&2
exit 0;
fi
exit_code=0
for unit in ${active_units} ; do
echo "INFO: Restarting $unit" >&2
sudo systemctl stop $unit
sleep 3
sudo systemctl start $unit
# if ! sudo systemctl restart $unit ; then
# echo "ERROR: Failed to restart $unit" >&2
# exit_code=1
# fi
done
exit $exit_code
#------------------------------------------------------------------------------------------------------------------------#
Ready.
Conclusion
The temBoard monitoring tool is very cool software and easy to install. Thanks to Dalibo for sharing that with the community. Whenever you might face an issue with temBoard, they usually fix it very quickly.