Some MQTT-brokers accept auth-tokens as username (e.g. mqtt.flespi.io). In man mosquitto_pub I found that clients support configuration files:
FILES
$XDG_CONFIG_HOME/mosquitto_sub, $HOME/.config/mosquitto_pub
Configuration file for default options.
But there are no clarification about file format. I tried this:
username=foobar..token
# and
username foobar..token
# and
--username=foobar..token
# and
foobar..token#host.name:port
# and some other
# that I found in https://github.com/eclipse/mosquitto/blob/master/client/client_shared.c
but in all cases I have just
Error: Unknown option '--username.. and so on'.
and I'm not very good at C-lang.. Can someone please tell me how to cook it right?
A-ha, seems I found it (in the last possible combination I didn't test):
# ~/.config/mosquitto_pub
--username <username-or-token>
-h <broker.addre.ss>
# and so on
So, proper format is with leadig dashes and without equal sign
Now it allows to exec mosquitto_pub with short parameter list:
mosquitto_pub -t mydata/update -m 4
Related
I want to modify the checks that the code analyzer program clang-tidy is doing, but it seems like the content of the configuration file .clang-tidy is being ignored.
I create the file by calling clang-tidy with the flag -dump-config and redirect the output to the file .clang-tidy.
Then I call sed to replace the value 800 with the value 700, which corresponds to the option with key google-readability-function-size.StatementThreshold. The specific option is not important to me, this is just for testing.
I verify that the value has indeed been changed.
Lastly, I rerun clang-tidy to see if it has accepted the new configuration, but it remains unchanged.
# generate config
clang-tidy -dump-config > .clang-tidy
# change config
sed -i 's/800/700/' .clang-tidy
# verify change
grep '700' .clang-tidy
# use config, does not work
clang-tidy -config '' -dump-config
The CheckOption remains at the default value, the content of the config file has been ignored:
CheckOptions:
# some lines omitted for brevity
- key: google-readability-function-size.StatementThreshold
value: '800'
Running clang-tidy -config '' -dump-config -explain-config shows that the configuration file has at least been found, i.e. many clang-analyzer specific checks are enabled in the detected config file, but the check google-readability-function-size.StatementThreshold is not listed.
I also tried passing the config directly as command line parameter with the command clang-tidy -config="{CheckOptions: [ {key: google-readability-function-size.StatementThreshold, value: 700} ]}" -dump-config, but got the same result.
The command clang-tidy --version gives the following output, running on Ubuntu 20.04:
LLVM (http://llvm.org/):
LLVM version 10.0.0
Optimized build.
Default target: x86_64-pc-linux-gnu
Host CPU: haswell
To see the change, you need to enable the check:
Checks: 'google-readability-function-size'
You can see it changed in the effective configuration with:
clang-tidy --dump-config
Another pitfall to be aware of is that errors parsing the values will be silently discarded.
I'm using Nagios Core 4.3.4. Is there any way to monitor the number of users connected to the server RDP on a Windows server like nrpe check_users? Please tell me if you have.
you would have to write your own check for this.
In your check you could call a powershell script on the server (but it depends on your windows version):
ipmo RemoteDesktop # 1. import the remotedesktop module
$(Get-RDUserSession).count # 2. print the count of the session
But there is another approach mentioned on monitoring-portal.org site. It's in german, so I try to translate:
1.) read window performance counters with nsclient:
c:\program files\nsclient\nsclient++.exe -noboot CheckSystem listpdh >counters_list.txt
2.) define the command (where -s $USER7$ is the passphrase to establishe the connection
define command{
command_name check_nt_Counter_User
command_line $USER1$/check_nt -H $HOSTADDRESS$ -s $USER7$ -p 12489 -v COUNTER -l $ARG1$ -w $ARG2$ -c $ARG3$ -d SHOWALL
}
3.) define the service
define service{
service_description RDP-Sessions
host_name TerminalSrv
use sometemplate
check_command check_nt_Counter_User!"\\Terminalservices\\active sessions","RDP-User active","users"!18!20
notes get count of active sessions
process_perf_data 1
notifications_enabled 0
}
I am a beginner with InfluxDB. When I use shell "EOF" to access influxdb, but it thow out an error error parsing query: found use, expected SELECT, DELETE, SHOW, CREATE, DROP, GRANT, REVOKE, ALTER, SET, KILL at line 1, char 1.
Here is the script as follows
influx << EOF
use testdb
insert test,altitude=1000,area=北 temperature=11,humidity=-4
EOF
Did not influx support interactive processing in shell?
You can't use USE or INSERT when piping into influx. These commands (and others) are specific to the interactive command line and disabled when stdin is not a tty.
You need to save data to a text file and use -import option:
influx -host=localhost -port=8086 -import -path data.txt
where data.txt should look like this:
# DML
# CONTEXT-DATABASE: testdb
test,altitude=1000,area=北 temperature=11,humidity=-4
See the documentation for details.
Alternatively, you can directly use the HTTP API via curl:
curl -XPOST "http://localhost:8086/write?db=testdb" --data-binary #- << EOF
test,altitude=1000,area=北 temperature=11,humidity=-4
EOF
I have a external monitor job that I'm pushing the result of another job to it with curl and base on this link :
Monitoring external jobs
After I create the job I just need to run a curl command with the body encoded in HEX to the specified url and then a build will be created and the output will be added to it but what I get instead is part of my output in clear text and the rest in weird characters like so :
Started
Asking akamai to purge this urls:
http://xxx/sites/all/modules/custom/uk.png http://aaaaaasites/all/modules/custom/flags/jp.png
<html><head><title>401 Unauthorized</title> </h�VC��&�G����CV�WF��&��VC�������R&R��BWF��&��VBF�66W72F�B&W6�W&6S�����&�G�����F����F�RW&�F �6�V6�7FGW2�bF�R&WVW7B�2��F�RF��RF�v�B�2��6�Ɩ�r&6�w&�V�B��"F�6�V6�7FGW2�bF�RF�6�W#�v�F��rf�"���F�W&vRF��6O request please keep in mind this is an estimated time
Waiting for another 60 seconds
Asking akamai to purge this urls:
...
..
..
This is how I'm doing it :
export output=`cat msg.out|xxd -c 256 -ps`
curl -k -X POST -d "<run><log encoding=\"hexBinary\">$output</log><result>0</result> <duration>2000</duration></run>" https://$jenkinsuser:$jenkinspass#127.0.0.1/jenkins/job/akamai_purge_results/postBuildResult -H'.crumb:c775f3aa15464563456346e'
If I cat that file is all fine and even if I edit it with vi I can't see any problem with it.
Do you guys have any idea how to fix this ?
Could it be a problem with the hex encoding ? ( I tried hex/enc/dec pages with the result of xxd and they look fine)
Thanks.
I had the same issue, and stumbled across this: http://blog.markfeeney.com/2010/01/hexbinary-encoding.html
From that page, you can get the encoding you need via this command:
echo "Hello world" | hexdump -v -e '1/1 "%02x"'
48656c6c6f20776f726c640a
An excerpt from the explanation:
So what the hell is that? -v means don't suppress any duplicate data
in the output, and -e is the format string. hexdump's very particular
about the formatting of the -e argument; so careful with the quotes.
The 1/1 means for every 1 byte encountered in the input, apply the
following formatting pattern 1 time. Despite this sounding like the
default behaviour in the man page, the 1/1 is not optional. /1 also
works, but the 1/1 is very very slightly more readable, IMO. The
"%02x" is just a standard-issue printf-style format code.
So in your case, you would do this (removing 'export' in favor of inline variable)
OUTPUT=`cat msg.out | hexdump -v -e '1/1 "%02x"'` curl -k -X POST -d "<run><log encoding=\"hexBinary\">$OUTPUT</log><result>0</result> <duration>2000</duration></run>" https://$jenkinsuser:$jenkinspass#127.0.0.1/jenkins/job/akamai_purge_results/postBuildResult -H'.crumb:c775f3aa15464563456346e'
I'm trying to monitor actual URLs, and not only hosts, with Nagios, as I operate a shared server with several websites, and I don't think its enough just to monitor the basic HTTP service (I'm including at the very bottom of this question a small explanation of what I'm envisioning).
(Side note: please note that I have Nagios installed and running inside a chroot on a CentOS system. I built nagios from source, and have used yum to install into this root all dependencies needed, etc...)
I first found check_url, but after installing it into /usr/lib/nagios/libexec, I kept getting a "return code of 255 is out of bounds" error. That's when I decided to start writing this question (but wait! There's another plugin I decided to try first!)
After reviewing This Question that had almost practically the same problem I'm having with check_url, I decided to open up a new question on the subject because
a) I'm not using NRPE with this check
b) I tried the suggestions made on the earlier question to which I linked, but none of them worked. For example...
./check_url some-domain.com | echo $0
returns "0" (which indicates the check was successful)
I then followed the debugging instructions on Nagios Support to create a temp file called debug_check_url, and put the following in it (to then be called by my command definition):
#!/bin/sh
echo `date` >> /tmp/debug_check_url_plugin
echo $* /tmp/debug_check_url_plugin
/usr/local/nagios/libexec/check_url $*
Assuming I'm not in "debugging mode", my command definition for running check_url is as follows (inside command.cfg):
'check_url' command definition
define command{
command_name check_url
command_line $USER1$/check_url $url$
}
(Incidentally, you can also view what I was using in my service config file at the very bottom of this question)
Before publishing this question, however, I decided to give 1 more shot at figuring out a solution. I found the check_url_status plugin, and decided to give that one a shot. To do that, here's what I did:
mkdir /usr/lib/nagios/libexec/check_url_status/
downloaded both check_url_status and utils.pm
Per the user comment / review on the check_url_status plugin page, I changed "lib" to the proper directory of /usr/lib/nagios/libexec/.
Run the following:
./check_user_status -U some-domain.com.
When I run the above command, I kept getting the following error:
bash-4.1# ./check_url_status -U mydomain.com
Can't locate utils.pm in #INC (#INC contains: /usr/lib/nagios/libexec/ /usr/local/lib/perl5 /usr/local/share/perl5 /usr/lib/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib/perl5 /usr/share/perl5) at ./check_url_status line 34.
BEGIN failed--compilation aborted at ./check_url_status line 34.
So at this point, I give up, and have a couple of questions:
Which of these two plugins would you recommend? check_url or check_url_status?
(After reading the description of check_url_status, I feel that this one might be the better choice. Your thoughts?)
Now, how would I fix my problem with whichever plugin you recommended?
At the beginning of this question, I mentioned I would include a small explanation of what I'm envisioning. I have a file called services.cfg which is where I have all of my service definitions located (imagine that!).
The following is a snippet of my service definition file, which I wrote to use check_url (because at that time, I thought everything worked). I'll build a service for each URL I want to monitor:
###
# Monitoring Individual URLs...
#
###
define service{
host_name {my-shared-web-server}
service_description URL: somedomain.com
check_command check_url!somedomain.com
max_check_attempts 5
check_interval 3
retry_interval 1
check_period 24x7
notification_interval 30
notification_period workhours
}
I was making things WAY too complicated.
The built-in / installed by default plugin, check_http, can accomplish what I wanted and more. Here's how I have accomplished this:
My Service Definition:
define service{
host_name myers
service_description URL: my-url.com
check_command check_http_url!http://my-url.com
max_check_attempts 5
check_interval 3
retry_interval 1
check_period 24x7
notification_interval 30
notification_period workhours
}
My Command Definition:
define command{
command_name check_http_url
command_line $USER1$/check_http -I $HOSTADDRESS$ -u $ARG1$
}
The better way to monitor urls is by using webinject which can be used with nagios.
The below problem is due to the reason that you dont have the perl package utils try installing it.
bash-4.1# ./check_url_status -U mydomain.com Can't locate utils.pm in #INC (#INC contains:
You can make an script plugin. It is easy, you only have to check the URL with something like:
`curl -Is $URL -k| grep HTTP | cut -d ' ' -f2`
$URL is what you pass to the script command by param.
Then check the result: If you have an code greater than 399 you have a problem, else... everything is OK! THen an right exit mode and the message for Nagios.