Is it possible to enable notifications for services in NAGIOS but to disable hosts notifications? I have a lot of local printers which don't have a impact when they are down but I want to have a service notification e.g. for "no paper" or "low toner cartridge".
Any experiences? Thank you
There are a couple of options, you can create a new host template to use for printers that inherits from your generic-host template, but turn off the setting to enable host notifications with:
notifications_enabled 0
E.g.
define host{
name generic-printer
use generic-host
notifications_enabled 0
register 0
}
Then each printers host definition could include the line
use generic-printer
in its definition.
Alternately, you could create a brand new printer template similar to the one for generic-host with notifications_enabled disabled and also not including any entry for check_command (which is where the command used to determine if a host is OK is chosen).
Default checks like ping or ssh can be disabled by deleting the service definition in the corresponding machine's .cfg file in the monitoring host. nrpe or nrdp services can be used for checks like low toner cartrige or no paper.
Steps to remove the ping check for printer1:
1- Open the printer1.cfg file in the nagios server to edit. (Usually under .../nagios/configurations/objects/)
2- Find the service definition in printer1.cfg where service_description value is PING and delete this definition.
3- Restart NagiOS. After this, the ping check should not be visible from the nagios web interface too.
Related
I am attempting to monitor the status of SeRemoteShutdownPrivilege and SeEnableDelegationPrivilege to determine if they have been updated/changed. When doing so, this configuration file doesn't seem to update. Are there any other locations where a variable would affect "Force shutdown form a remote system" and "Enable computer and user accounts to be trusted for delegation". I have already looked through Microsoft Registry key documentation. Here's the link I referred to: https://www.microsoft.com/en-us/download/details.aspx?id=25250 I have looked into using Get-GPRegistryValue, Get-GPOReport, and Get-GPO. The way I generated Sec.cfg was using "Secedit /export /cfg sec.cfg /log NUL".
Thank you for any help that you can provide.
• For the ‘Force Shutdown from a Remote System’ setting to apply effectively on a client system, kindly check whether the below group policy regarding this setting has been applied or not by executing the command ‘gpresult /h gpreport.html’ on the elevated command prompt on the client system. In the report, please check whether the above said group policy setting has been applied successfully or not.
Group policy setting: -
On the Group Policy Server, check the below group policy setting by checking the ‘Default domain policy’ or that policy which controls the below setting: -
Computer Configuration\Windows Settings\Security Settings\Local Policies\User Rights Assignment/Force shutdown from a remote system
To forcefully apply the domain group policy settings on the client system, execute the command ‘gpupdate /force’ on an elevated command prompt and restart the client system. Then check the client’s group policy report once again to check whether the setting has been applied or not.
• Also, I would suggest you to please make the above said modifications on a baseline client system through local group policy editor and export the settings in an ‘.inf’ template for installation via powershell script. Check for the below settings information in the ‘.inf’ file and then execute the below command by modifying the values for ‘.inf’ file and ‘.db’ file as appropriate: -
[Privilege Rights]
SeDenyServiceLogonRight = *S-1-1-0,*S-1-5-19, Administrators
secedit.exe /configure /cfg C:\customsettings.inf /db C:\WINDOWS\security\Database\customsettings.db /quiet
By doing the above, your issue should get resolved.
I'm developing on a shared local server with some other people. This server has one Apache/PHP instance, but then it has multiple "sites-available" (VirtualHost) for different people.
I would like to get XDebug working so every one of us can use it independently. The problem is that if we enable XDebug and, for example, my IDE is connected to the server and I set a breakpoint, it'll stop if other person is browsing the page, even if it's in his/her own VirtualHost.
Any hints on how to properly set this up?
Edit:
Forgot to mention that the webserver is running in Docker.
This is the current configuration of XDebug:
# automatically start debugger on every request
xdebug.remote_enable=1
xdebug.remote_autostart=1
xdebug.remote_port=9000
# send all debug requests to 127.0.0.1
xdebug.remote_connect_back=0
xdebug.remote_host=host.docker.internal
#log all xdebug requests to see is it working correctly
xdebug.remote_log=/var/log/debug.log
Thanks.
This should not happen at all, unless you have xdebug.remote_autostart turned on, and have hard coded xdebug.remote_host (instead of using xdebug.remote_connect_back). You don't want to hard code xdebug.remote_host in a multi-user environment really.
Debugging sessions are only initialised when the XDEBUG_SESSION_START is detected (which is what the browser extension will set, or when that is added to the GET/POST parameters)--and continued requests.
There is also no such concept as:
my IDE is connected to the server
Upon every request, Xdebug (if set to trigger with the cookie) will connect to the IDE. And it uses the xdebug.remote_host setting, or the inferred IP address if xdebug.remote_connect_back is enabled to connect to. And the end of the request, that connection is severed. You can use xdebug.remote_log=/tmp/xdebug.log to create a log file, which will indicate when connections are being made, and whether they work.
I have a react-app, I set up my app to run on a custom url using the HOST variable when starting the app, something like:
"scripts": {
"start": "HOST=my-local-website.com ..."
}
I need to access this url from a windows virtual machine to test it on IE11, before setting up the HOST variable I was able to access it simply from my IP address (192.168.X.XX:3000), having changed the HOST variable this doesn't work anymore.
Does anyone know how I can access it from a virtual machine?
Thank you in advance
I suggest to set environment variables in separate .env file like described in dicumentation.
In .env file set HOST=my-local-website.com to change host (it's unclear why official doc recommends prefixing all env variables with REACT_APP_)
Web site name my-local-website.com mapping to IP address of server (192.168.X.XX:3000 in your case) is done using DNS. This relate to networking and not to frameworks you use. So to be able to access your site by name you have to establish mapping between name of the site and IP address
I terms of DNS this mapping will look like
my-local-website.com A 192.168.X.XX
But for testing purpuses you can use simplified approach (I don't think that you have established DNS server in place). On Windows you can use hosts file which is located in C:\Windows\System32\drivers\etc folder. File is named hosts. Open it with any text editor (like notepad) and add string
192.168.X.XX my-local-website.com
IP address goes first, name last. Dont include port number (:3000) as it not related to DNS. hosts file should be changed on you test (client) PC, not on the PC where your app run.
You may also modify hosts on PC where you app runs to check if host has been configured correctly.
To check that everything is correct you may use ping like this
ping my-local-website.com
IP address should be printed if you configured everything correctly.
If you run your app on Windows host there may be problem with firewall configuration. If your app open on the same PC where it is started but not on another PC, most probaly that firewall blocks traffic. It can be WIndows Firewall or antivirus software if you have any.
I am working on an angular app using the angular cli to set things up. Running the ng serve command spawns a server at this address <my_ec2_host_name>:4200. When I try to access the page on the browser it doesn't work (connection timed out error). I believe this is because of security reasons so I added the following rule to my security groups for the ec2 instance:
Port 4200 should now be accessible but I still can't get the page to load. Can someone think of how to get this to work?
Start angular with below command.
ng serve --host=0.0.0.0 --disable-host-check
it will disable host check and allow to access with IP
You can set up the host option like this:
ng serve -host 0.0.0.0
The steps you are doing are correct for opening a port via Security Groups in the EC2 console. Make sure you are modifying the correct security group, and make sure that your changes have been saved.
Your container may have additional firewalls in place, so you will want to check the OS documentation. For Example, RHEL uses iptables as a further security measure: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Security_Guide/sect-Security_Guide-IPTables.html.
That looks correct. Are you sure that your server is running and listening for connections?
You should ssh to that server and verify that the page can be loaded locally. Eg:
curl http://<YOUR HOST IP ADDRESS>:4200
eg: curl http://54.164.10.123:4200
You should be careful to use the public ip address (eg: IPv4 Public IP when you're in the EC2 console). I've run into problems in the past where I've got a server listening on one IP address (often localhost) and not the public ip address.
Also maybe a problem: Is your host inside a VPC of some sort?
Using the windows host file located in
windows/system32/drivers/etc/host
Is it possible to respond a request from an application like when it is offline(not connected to the Internet)? Could you please give an example of this is done.
The hosts file only lists aliases for ip-addresses. For example:
192.168.0.1 foo bar foo.com bar.com
If that line is in the hosts file, then you can use the host-names foo, bar, foo.com and bar.com to reach the computer with ip-address 192.168.0.1.
If the computer, or the service you want to reach on that address, is not online, you can't reach it no matter what you have in your hosts file.
If you are willing to map your local development environment to a domain name, you can edit the domain name in hosts file and map it to 127.0.0.1, which is the loopback address.
That way, any requests done to that particular domain will fallback to your local machine.
You can also assign different LAN/WAN IP addresses.
When your development phase is done, you can remove the entry.
I would not recommend doing so, stick with the localhost and just make use of that to test virtualhosts setup or some sort of domain based configurations.
If there is anything else I can answer, please don't hesitate to post further comments on my answer.
If you mean to respond to HTTP requests then you need a Web Server configured to respond to any host (or that specific host name) on port 80. If you are not using it for anything else IIS can do this1 – configure it to return 404 (not found) or some other relatively neutral fail response.
1 If IIS is already being used then things get much harder, later versions of IIS are more flexible either with a combination of using HTTP.SYS to allow other applications to respond to certain URLs or using different Web Sites in IIS (until Windows 7, or maybe Vista, only available on Server editions of Windows).