Replies: 4 comments 9 replies
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I have reconfirmed this issue with Pak @ariya , and my confirmation has a firm my stand on how we should do this technically. There are few reason why we should do the later approach.
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could you tell me where i find how to set up agent? I understand that I could in remote region set up agent and run probe on that agent . It could be usefull for checking if cloud services like traffic menager works properly , could you give me more details about agents ? |
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Hi @rmarszolek, Please check the installation docs here. More guides can also be found on our medium. How I would do it is probably using a docker instance. Let us know if you get stuck installing/setting up Monika. Regards. |
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An example config will be like the following: {
"agents": [
{
"name": "Surabaya",
"ip": "192.168.1.101",
"username": "monika",
"password": "trustno1"
}
],
"probes": [
{
"name": "Google",
"description": "Check if Google is down or not",
"interval": 60,
"method": "GET",
"timeout": 5,
"requests": [
{
"url": "https://google.com"
}
],
"agents": [
"local",
"Surabaya"
]
}
]
}Here the probe named Google will be executed on two places, local (a special one) and Surabaya. The latter refers to the chosen agent name specified in the The example illustrates the use username/password for authentication but obviously at some point we ought to support SSL certificate. Also for the time being, we can assume that the remote machine has cURL installed already. |
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could you tell me where i find how to set up agent? I understand that I could in remote region set up agent and run probe on that agent . It could be usefull for checking if cloud services like traffic menager works properly , could you give me more details about agents ? |
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Isn't this feature supposed to be the job of symon? not monika? |
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Based on some feedback, this feature is necessary to complement the Monika <-> Symon approach. For some users, they want to get the benefit of getting their HTTP endpoints being probed from multiple locations, without Monika HQ. The reason is simplicity:
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make sense, I agreed with this approach |
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As POC, the following script should be imitated by monika probing. #!/bin/bash
while getopts h:i:p: flag
do
case "${flag}" in
h) HOST=${OPTARG};;
i) SSH_KEY=${OPTARG};;
p) PROBE_TARGET=${OPTARG};;
esac
done
if [ -z $HOST ] || [ -z $SSH_KEY ] || [ -z $PROBE_TARGET ]; then
echo "Usage"
echo " -h SSH user@host target"
echo " -i Path to SSH private key or PEM"
echo " -p URL to proble"
echo "Example"
echo " $0 -h user@myhost -i /path/to/key.pem -p https://check.com"
exit 1
fi
if [ ! -r $SSH_KEY ]; then
echo "SSH Key not found"
exit 1
fi
ssh -i $SSH_KEY $HOST bash -c "'
if [ -f arguments.txt ]; then
rm arguments.txt
fi
# https://curl.se/docs/manpage.html
echo "{\\\\n" > arguments.txt
echo "\"monika_http_code\": %{http_code}\\\\n" >> arguments.txt
echo "\"monika_time_total\": %{time_total} seconds\\\\n" >> arguments.txt
echo "\"monika_size_request\": %{size_request} bytes\\\\n" >> arguments.txt
echo "\"monika_size_download\": %{size_download} bytes\\\\n" >> arguments.txt
echo "}\\\\n" >> arguments.txt
if [ -f detail.txt ]; then
rm detail.txt
fi
if [ -f headers.txt ]; then
rm headers.txt
fi
if [ -f output.txt ]; then
rm output.txt
fi
curl -s --dump-header headers.txt -w "@arguments.txt" $PROBE_TARGET > detail.txt
echo "[response-detail]"
cat detail.txt | grep "monika"
echo "[response-headers]"
cat headers.txt
'"save the script above as |
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This way, the http call is done by the destined host using CURL. The result of the call is directly captured from the caller (local) stdin. |
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As shown, we captures the response code, response time, and response size. As well as all headers for chaining purpose. |
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Perhaps we also shall try the |
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The script shown already demonstrate the |
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Describe the bug
Currently monika only able to run from local agent, we want monika to also run from remote agent as in the symon original idea.
By running remote agent we can try multiple host or region for monitoring.
To Reproduce
Steps to reproduce the behavior:
Currently the monitoring from Monika is only run from the local agent, checking the url set in probe.
Expected behavior
Monika can run the checking to the url from agent deployed in remote servers.
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