Re: [Nagios-users] Sending SMS from Nagios
Josh Kessler wrote: The easiest way to send SMS pages is to use the cell phone company's email address's for the numbers. I know verizon is [EMAIL PROTECTED] . That way you don't have to worry about yet another add-on. There are places to look up all the company's listings, I just don't have it in front of me. Quick and simple SMSing. -Josh Well, that's another possible point of failure. Not getting notifications about an internet connection not being available _because_ the internet connection isn't available sucks :P wkr, Tobias - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
[Nagios-users] Severe peformance issue during major network outage
Hi, I have recently set up Nagios 2.8 and am monitoring 1623 hosts and 1946 services. Performance under normal circumstances is fine. Typical check and latency times are as follows: Monitoring Performance Service Check Execution Time:0.03 / 11.04 / 3.418 sec Service Check Latency: 0.00 / 1.87/ 0.479 sec Host Check Execution Time: 0.03 / 10.04 / 0.843 sec Host Check Latency: 0.00 / 0.00/ 0.000 sec # Active Host / Service Checks: 1623 / 1946 # Passive Host / Service Checks: 0 / 0 The vast majority of these hosts are spread over 320 geographic locations throughout the UK. These locations are connected to our data centre via a hardware VPN device with the majority (about 270) using a private ADSL circuit to facilitate the VPN connection. Yesterday, we had a major outage caused by the failure of one of the ADSL central routers at our ISP. This took out a third of our ADSL sites (roughly 90) for 16 minutes. Each of these sites has about 4 devices monitored by Nagios so in effect about 360 devices (hosts) went down in an instant. As you can imagine, we were aware of the problem almost immediately due to the barrage of phone calls from out clients, but unfortunately Nagios didn't even remotely reflect the current situation. I have used parent child relationships to the full so I was expecting a good portion of the VPN devices to show as down with all other devices behind the VPN device showing as unreachable. This was not the case. It actually took half an hour to find only 20 of these VPN devices down and another half an hour to notice that they were actually back up again having only noticed 20 of the 90 in the first place. During the outage, the service check latency was increasing exponentially and the performance stats half an hour after the start of the problem were as follows: Monitoring Performance Service Check Execution Time:0.03 / 11.04 / 3.646 sec Service Check Latency: 947.84 / 2080.05 / 1467.274 sec Host Check Execution Time: 0.03 / 10.04 / 0.968 sec Host Check Latency: 0.00 / 0.00/ 0.000 sec # Active Host / Service Checks: 1623 / 1946 # Passive Host / Service Checks: 0 / 0 As you can see, the average service check latency time has jumped to 1467 seconds (24 mins). On all of these hosts there is only one service which is a ping (check_ping -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$ -p 5). The host check is also a ping (check_ping -H $HOSTADDRESS$ -w 3000.0,80% -c 5000.0,100% -p 1) but much faster with only 1 ping being sent out. The normal_check_interval on services is 5 mins with 2 max_check_attempts and a retry_interval of 1. The host also has a max_check_attempts of 2. A lot of people have mentioned using fping to speed things up but if my average service latency is only 0.479 seconds in normal circumstances, I can't see how tweaking this will help in a major outage situation. I have also read through the section on tweaking performance which seems to be geared toward protecting the machine Nagios is running on. I want to do the opposite and give Nagios a lot more work to do. The machine is dedicated to Nagios and is quite high spec. It's an IBM xServies 336 with 2 Dual Core processors and 4GB of RAM so it should be able to take a much bigger hit. I have been monitoring CPU performance with MRTG and the CPU performance never goes lower than 90% idle. Ironically during the problem, the machines idle time jumped to 95% when I would have expected to drop rather than increase. The only performance tweak I could see that would affect the performance in this situation is max_concurrent_checks but this is already set to 0. I am fairly new to Nagios (2 months) so I apologise if I have missed something obvious but any pointers to a solution to this problem would be greatly appreciated. I have run a nagios -s (attached below) which seems to indicate that everything is setup ok. Let me know if you require any more information from my config that would help diagnose the problem. regards, Aidan Nagios 2.8 Copyright (c) 1999-2007 Ethan Galstad (http://www.nagios.org) Last Modified: 03-08-2007 License: GPL Projected scheduling information for host and service checks is listed below. This information assumes that you are going to start running Nagios with your current config files. HOST SCHEDULING INFORMATION --- Total hosts: 1624 Total scheduled hosts: 0 Host inter-check delay method: SMART Average host check interval: 0.00 sec Host inter-check delay: 0.00 sec Max host check spread: 30 min First scheduled check: N/A Last scheduled check:N/A SERVICE SCHEDULING INFORMATION --- Total services: 1947 Total scheduled services: 1947 Service inter-check delay method: SMART Average
Re: [Nagios-users] Failed to Send Notification
-Original Message- From: [EMAIL PROTECTED] [mailto:nagios-users- [EMAIL PROTECTED] On Behalf Of adi yesaya Sent: Friday, May 11, 2007 6:02 AM To: Nagios-users@lists.sourceforge.net Subject: [Nagios-users] Failed to Send Notification Dear Nagios-ers, I tried to send email notifications, some succeed, some not. The ones which failed, had this error message: - Transcript of session follows --- - ... while talking to fallback.nl.uu.net.: 550-Verification failed for [EMAIL PROTECTED] 550-Domain localhost.localdomain not found in DNS chop Fallback.nl.uu.net is rejecting the e-mail because the MTA on your nagios box, not nagios itself, is claiming to be called localhost.localdomain, which is an unverifiable name. It's very reasonable that they would do that. You need to configure the MTA on your nagios box to use a real hostname that can be found in the DNS. This may be as simple as adding the hostname to your DNS and editing your /etc/hosts file on your nagios box, changing the 127.0.0.1 entry to something like -- 127.0.0.1 yourhost.yourdomain.foo localhost.localdomain You'd need to restart your MTA if it's running as a daemon after making that change. If that doesn't work, you'll need to specifically configure the MTA that you're using to masquerade as that host or domain. You can do this for Sendmail by setting the MASQUERADE_AS macro. Under Postfix I believe it's the myorigin variable. -- Marc - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] Failed to Send Notification
chop Fallback.nl.uu.net is rejecting the e-mail because the MTA on your nagios box, not nagios itself, is claiming to be called localhost.localdomain, which is an unverifiable name. It's very reasonable that they would do that. You need to configure the MTA on your nagios box to use a real hostname that can be found in the DNS. This may be as simple as adding the hostname to your DNS and editing your /etc/hosts file on your nagios box, changing the 127.0.0.1 entry to something like -- 127.0.0.1 yourhost.yourdomain.foo localhost.localdomain You'd need to restart your MTA if it's running as a daemon after making that change. If that doesn't work, you'll need to specifically configure the MTA that you're using to masquerade as that host or domain. You can do this for Sendmail by setting the MASQUERADE_AS macro. Under Postfix I believe it's the myorigin variable. -- Marc How can I know what MTA I am using? At the nagios command.cfg, the email-notification is send by using /bin/mail , but is /bin/mail a MTA or just to send email? - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
[Nagios-users] NRPE: Unable to read output
Hello,
I'm trying to use the NRPE package to monitor the resources of remote
computers.
I'm using Fedora Core 3 as one of my clients with the following packages:
nagios-plugins-nrpe-2.5.2-1.fc3.rf
nagios-nrpe-2.5.2-1.fc3.rf
When I test from this fedora client machine I get the following error:
[EMAIL PROTECTED] ./check_nrpe -H mydomain.org -c check_load
NRPE: Unable to read output
This is the content of the /etc/xinetd.d/nrpe file:
service nrpe
{
flags = REUSE
type= UNLISTED
port= 5666
socket_type = stream
wait= no
user= nagios
group = nagios
server = /usr/sbin/nrpe
server_args = -c /etc/nagios/nrpe.cfg --inetd
log_on_failure += USERID
disable = no
only_from = x.x.x.x
}
The x.x.x.x isthe IP of the client machine since I'm doing testing. I will
change it later to the monitor machine that runs nagios.
This is the content of the /etc/nagios/nrpe.cfg
pid_file=/var/run/nrpe.pid
server_port=5666
nrpe_user=nagios
nrpe_group=nagios
dont_blame_nrpe=0
debug=1
command_timeout=60
command[check_users]=/usr/lib/nagios/plugins/check_users -w 5 -c 10
command[check_load]=/usr/lib/nagios/plugins/check_load -w 15,10,5 -c
30,25,20
command[check_disk1]=/usr/lib/nagios/plugins/check_disk -w 20 -c 10 -p
/dev/hda1
command[check_disk2]=/usr/lib/nagios/plugins/check_disk -w 20 -c 10 -p
/dev/hdb1
command[check_zombie_procs]=/usr/lib/nagios/plugins/check_procs -w 5 -c 10
-s Z
command[check_total_procs]=/usr/lib/nagios/plugins/check_procs -w 150 -c 200
This is the content of the /var/log/secure log:
May 11 10:57:48 hostname xinetd[29902]: START: nrpe pid=30509 from=x.x.x.x
This is what I get when restarting the nrpe service:
Shutting down Nagios NRPE daemon (nrpe): [FAILED]
Starting Nagios NRPE daemon (nrpe):[ OK ]
This is what the /var/log/messages log is saying when trying to restart the
nrpe service:
May 11 11:05:06 hostname nrpe: nrpe shutdown failed
May 11 11:05:06 hostname nrpe[30554]: INFO: SSL/TLS initialized. All network
traffic will be encrypted.
May 11 11:05:06 hostname nrpe[30555]: Starting up daemon
May 11 11:05:06 hostname nrpe[30555]: Network server bind failure (98:
Address already in use)
May 11 11:05:06 hostname nrpe: nrpe startup succeeded
When I do a ps -aux | grep nrpe I dont see the deamon by the name nrpe
running but when I do a ps for xinetd, xinetd is running
I installed this package on othermachines I I get the same problem.
Also, the only plugin listed under /usr/lib/nagios/plugins/ is check_nrpe
Do i need to see other plugins listed like check_load or check_disk. Or
these are only switches that are used by check_nrpe?
If this is a permission issue which I dont think so because when installing
these packes they should take care of the permissions and ownership, can
someone provide me with all the paths and permissions of each file, how they
should look like?
Any inputs?
THANKS!
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[Nagios-users] Strange Return code Error
nagios-users@lists.sourceforge.netHi Guys, I just installed configured nagios on a RHEL4 U4 64bit 2.6.9-34.ELsmp [EMAIL PROTECTED] dist]# rpm -qa | grep nagios nagios-2.9-1.el4.rf nagios-plugins-1.4.8-2.el4.rf nagios-plugins-nrpe-2.5.2-1.el4.rf nagios-nrpe-2.5.2-1.el4.rf And I get a Return code of 127 for check of service 'n-users' on host 'fisdb01' was out of bounds Message on all services on all hosts. I saw on http://www.nagios.org/faqs/viewfaq.php?faq_id=17 that this was most likely a problem with the path to the executable. but if that was so I wouldn't be able to do this: [EMAIL PROTECTED] services]# /usr/lib64/nagios/plugins/check_nrpe -H localhost -c check_users USERS OK - 3 users currently logged in |users=3;5;10;0 which proves it executes and in the right place. Right? some more info: [EMAIL PROTECTED] services]# ls -l /usr/lib64/nagios/plugins/check_users -rwxr-xr-x 1 root root 32138 Apr 20 22:06 /usr/lib64/nagios/plugins/check_users [EMAIL PROTECTED] services]# ls -l /etc/nagios/nrpe.cfg -rw-r--r-- 1 root root 8514 May 11 10:44 /etc/nagios/nrpe.cfg [EMAIL PROTECTED] services]# cat /etc/nagios/nrpe.cfg | grep users command[check_users]=/usr/lib64/nagios/plugins/check_users -w 5 -c 10 #command[check_users]=/usr/lib64/nagios/plugins/check_users -w $ARG1$ -c $ARG2$ command[unix_users]=/usr/bin/perl /usr/lib64/cactiscripts/unix_users.pl command[check_users]=/usr/lib64/nagios/plugins/check_users -w 5 -c 10 command[unix_users]=/usr/bin/perl /usr/lib64/cactiscripts/unix_users.pl nagios.log [1178875845] Nagios 2.9 starting... (PID=29283) [1178875845] LOG VERSION: 2.0 [1178875845] Warning: Duplicate definition found for host 'generic-host' (config file '/etc/nagios/hosts.cfg', starting on line 21) [1178875845] Warning: Duplicate definition found for service 'generic-service' (config file '/etc/nagios/services/services.cfg', starting on line 2) [1178875845] Finished daemonizing... (New PID=29284) [1178876155] Warning: Return code of 127 for check of service 'n-users' on host 'fisdb01' was out of bounds. Make sure the plugin you're trying to run actually exists. [1178876305] Warning: Return code of 127 for check of service 'n-users' on host 'fisdev01' was out of bounds. Make sure the plugin you're trying to run actually exists. I've spend many hours on this error. So if someone can point me in the right direction? Thanks in advance, Jan Lenaerts - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] Strange Return code Error
I just installed configured nagios on a RHEL4 U4 64bit 2.6.9-34.ELsmp [EMAIL PROTECTED] dist]# rpm -qa | grep nagios nagios-2.9-1.el4.rf nagios-plugins-1.4.8-2.el4.rf nagios-plugins-nrpe-2.5.2-1.el4.rf nagios-nrpe-2.5.2-1.el4.rf And I get a Return code of 127 for check of service 'n-users' on host 'fisdb01' was out of bounds Message on all services on all hosts. I saw on http://www.nagios.org/faqs/viewfaq.php?faq_id=17 that this was most likely a problem with the path to the executable. but if that was so I wouldn't be able to do this: [EMAIL PROTECTED] services]# /usr/lib64/nagios/plugins/check_nrpe -H localhost -c check_users USERS OK - 3 users currently logged in |users=3;5;10;0 which proves it executes and in the right place. Right? No, it doesn't. Always run your tests as the Nagios user. - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] Failed to Send Notification
How can I know what MTA I am using? At the nagios command.cfg, the email-notification is send by using /bin/mail , but is /bin/mail a MTA or just to send email? Check your mail log. - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] check_http plugin and a proxy?
-Original Message- From: Bill Jacqmein [mailto:[EMAIL PROTECTED] Sent: Monday, April 23, 2007 7:55 AM To: Marc Powell Cc: nagios-users@lists.sourceforge.net Subject: Re: [Nagios-users] check_http plugin and a proxy? The only problem Ive found with this is the https component. It doesnt appear to speak connect when talking to the proxy. That's correct. Fortunately for the OP, he wasn't asking for that capability. -- Marc - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
[Nagios-users] nrpe command line test question
My nrpe.cfg on the remote host contains these commands command[check_disk]=/usr/local/nagios/libexec/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$ command[check_disk1]=/usr/local/nagios/libexec/check_disk -w 20 -c 10 -p /dev/vga/root running a check_nrpe from the command line has the following results. [EMAIL PROTECTED] ~]# /usr/local/nagios/libexec/check_nrpe -H hostname -c check_disk -a 10 5 /dev/vga/root check_disk: Warning threshold must be integer or percentage! [EMAIL PROTECTED] ~]# /usr/local/nagios/libexec/check_nrpe -H hostname -c check_disk1 DISK OK - free space: / 801 MB (12% inode=81%);| /=5625MB;6405;6415;80;6425 I would like to be able to pass arguments to the remote system, allowing me to set threshold values at the service level. Can anyone tell me why I get the error Warning threshold must be integer or percentage! ? Or suggest another method of passing the args to the remote nrpe process? Thanks Brady - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] nrpe command line test question
Maxwell,Brady wrote: My nrpe.cfg on the remote host contains these commands command[check_disk]=/usr/local/nagios/libexec/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$ command[check_disk1]=/usr/local/nagios/libexec/check_disk -w 20 -c 10 -p /dev/vga/root running a check_nrpe from the command line has the following results. [EMAIL PROTECTED] ~]# /usr/local/nagios/libexec/check_nrpe -H hostname -c check_disk –a 10 5 /dev/vga/root check_disk: Warning threshold must be integer or percentage! [EMAIL PROTECTED] ~]# /usr/local/nagios/libexec/check_nrpe -H hostname -c check_disk1 DISK OK - free space: / 801 MB (12% inode=81%);| /=5625MB;6405;6415;80;6425 I would like to be able to pass arguments to the remote system, allowing me to set threshold values at the service level. Can anyone tell me why I get the error “Warning threshold must be integer or percentage!” ? Or suggest another method of passing the args to the remote nrpe process? Thanks Brady - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null Make sure that you set dont_blame_nrpe to 1 in nrpe.cfg to allow nrpe to accept client arguments. This is set to 0 by default as it is deemed a security risk Aidan - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
[Nagios-users] Question about Freshness Checking
I am running a Distributed Nagios configuration. On each of my passive service checks I am also doing freshness checks just encase the distributed host goes down and can't run the check. I am able to log into the distributed hosts Web Interface and shut off active checks if I don't want to run checks for a temporary amount of time on a specific hosts and it is service with one click to disable active checks for all services. This works with out any problems but once my freshness checks is hit the Centralized Nagios hosts starts doing the active checks because it doesn't receive an update from the Distributed Hosts. I am aware this is what should be happening and it is working great. Is there a way to disable the freshness check for all the services for a host just like you can for active checks? I know if I shut off receiving passive checks for one service this disables the freshness checks. Has someone configured a patch or know how to activate this feature to disable passive checks for all services on a host through the Nagios cgi. Jeff - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] Severe peformance issue during major network outage
On 11/05/07, Aidan Anderson [EMAIL PROTECTED] wrote: A lot of people have mentioned using fping to speed things up but if my average service latency is only 0.479 seconds in normal circumstances, I can't see how tweaking this will help in a major outage situation. check_ping won't finish until it's done all the pings, and the pings are (if I recall) always at one second intervals. This means that if you've configured check_ping to do (let's say) 5 pings, the check_ping plugin will always take at least 5 seconds to complete. If the check_ping is being run as a host check rather than a service check, my understanding is that this is the only thing Nagios will be doing; it doesn't do anything else concurrently (correct me if I'm wrong people). In normal operation, nagios will rarely do a host check, as it only usually bothers to if all of the service checks (which can run concurrently) for that host have failed. When lots of hosts go down at once, you suddenly notice how bad it is to have such slow host checks. check_icmp or check_fping typically complete a whole lot quicker than check_ping. This is because (if I recall correctly) they will finish and return an OK status as soon as they receive the first ping response rather than bothering to do all 5 of them. My nagios system used to crawl even if only half a dozen hosts were down until I changed check_ping to check_fping (and now I use check_icmp but I can't remember if it's any better than check_fping or not). hth, Jim - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] Strange Return code Error
-Original Message-
From: [EMAIL PROTECTED] [mailto:nagios-users-
[EMAIL PROTECTED] On Behalf Of De Wetenschapper
Sent: Friday, May 11, 2007 10:19 AM
To: nagios-users@lists.sourceforge.net
Subject: [Nagios-users] Strange Return code Error
mailto:nagios-users@lists.sourceforge.net Hi Guys,
I just installed configured nagios on a RHEL4 U4 64bit
2.6.9-34.ELsmp
[EMAIL PROTECTED] dist]# rpm -qa | grep nagios
nagios-2.9-1.el4.rf
nagios-plugins-1.4.8-2.el4.rf
nagios-plugins-nrpe-2.5.2-1.el4.rf
nagios-nrpe-2.5.2-1.el4.rf
And I get a Return code of 127 for check of service 'n-users' on host
'fisdb01' was out of bounds Message on all services on all hosts.
I saw on http://www.nagios.org/faqs/viewfaq.php?faq_id=17 that this
was
most likely a problem with the path to the executable.
but if that was so I wouldn't be able to do this:
[EMAIL PROTECTED] services]# /usr/lib64/nagios/plugins/check_nrpe -H
localhost
-c check_users
USERS OK - 3 users currently logged in |users=3;5;10;0
which proves it executes and in the right place. Right?
Not at all. It just means that root can run a program successfully when
called directly. The question you should be asking is does the command{}
definition for this plugin use that full path? The default configs
typically use the $USER1$ macro for the path which must be properly set
in resource.cfg. Is $USER1$ pointing to the correct path? Is
resource.cfg being loaded by nagios?
Also, as pointed out previously, the plugins are never run as the root
user, always the nagios user. While it's not likely in this case, the
nagios user certainly isn't guaranteed the same access privileges as the
root user. You should always perform plugin tests as the nagios user.
--
Marc
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Re: [Nagios-users] Severe peformance issue during major network outage
On 11 May 2007, at 19:03, Jim Avery wrote: On 11/05/07, Aidan Anderson [EMAIL PROTECTED] wrote: A lot of people have mentioned using fping to speed things up but if my average service latency is only 0.479 seconds in normal circumstances, I can't see how tweaking this will help in a major outage situation. check_ping won't finish until it's done all the pings, and the pings are (if I recall) always at one second intervals. This means that if you've configured check_ping to do (let's say) 5 pings, the check_ping plugin will always take at least 5 seconds to complete. If the check_ping is being run as a host check rather than a service check, my understanding is that this is the only thing Nagios will be doing; it doesn't do anything else concurrently (correct me if I'm wrong people). Correct. We noticed this some time ago too: http://altinity.blogs.com/ dotorg/2006/05/immediate_perfo.html If you do stick to using check_ping, use -p 1 which is sub second response time. In normal operation, nagios will rarely do a host check, as it only usually bothers to if all of the service checks (which can run concurrently) for that host have failed. When lots of hosts go down at once, you suddenly notice how bad it is to have such slow host checks. Nagios 3 will do parallelised host checks, so there will not be a slow down there. Also, Ethan said in his presentation at the Netways conference last year that some of the host unreachable logic was not quite right: http://www.netways.de/uploads/media/Ethan.Galstad_Nagios. 3.and.Beyond.pdf This should be fixed in Nagios 3. Ton http://www.altinity.com T: +44 (0)870 787 9243 F: +44 (0)845 280 1725 Skype: tonvoon - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] Severe peformance issue during major network outage
Ton Voon wrote: On 11 May 2007, at 19:03, Jim Avery wrote: On 11/05/07, Aidan Anderson [EMAIL PROTECTED] wrote: A lot of people have mentioned using fping to speed things up but if my average service latency is only 0.479 seconds in normal circumstances, I can't see how tweaking this will help in a major outage situation. check_ping won't finish until it's done all the pings, and the pings are (if I recall) always at one second intervals. This means that if you've configured check_ping to do (let's say) 5 pings, the check_ping plugin will always take at least 5 seconds to complete. If the check_ping is being run as a host check rather than a service check, my understanding is that this is the only thing Nagios will be doing; it doesn't do anything else concurrently (correct me if I'm wrong people). Correct. We noticed this some time ago too: http://altinity.blogs.com/ dotorg/2006/05/immediate_perfo.html If you do stick to using check_ping, use -p 1 which is sub second response time. First of all, thank-you for the replies! The majority of devices that I monitor are routers/vpn devices and I have (on the documentation's advice) not set active checks on the hosts and instead I've added check_ping as a service on each of these hosts to do 5 pings as follows: check_ping -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$ -p 5 For the host check I already use as you suggested a check_ping that only does one ping as follows: check_ping -H $HOSTADDRESS$ -w 3000.0,80% -c 5000.0,100% -p 1 My understanding was that if the service check failed it would then abandon the service check altogether and move onto the host check which is only 1 ping. The fact that the service checks are parallelised should mean that it shouldn't matter that there are 5 pings and the host check is only 1 ping which should resolve the bottleneck of serialised host checks. I'm at a loss as to why performance has been impacted so severely. Maybe I need to abandon the service checks altogether and just have a host check. I'm reluctant to do this because I get very useful information from 5 pings, ie packet loss and high rta which is particularly handy for checking volatile links such as ADSL. Maybe that is the trade-off, fast host checking with no useful stats or slow host checking with useful stats. regards, Aidan - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] Severe peformance issue during major network outage
On 11 May 2007, at 20:25, Aidan Anderson wrote: First of all, thank-you for the replies! The majority of devices that I monitor are routers/vpn devices and I have (on the documentation's advice) not set active checks on the hosts and instead I've added check_ping as a service on each of these hosts to do 5 pings as follows: check_ping -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$ -p 5 For the host check I already use as you suggested a check_ping that only does one ping as follows: check_ping -H $HOSTADDRESS$ -w 3000.0,80% -c 5000.0,100% -p 1 My understanding was that if the service check failed it would then abandon the service check altogether and move onto the host check which is only 1 ping. The fact that the service checks are parallelised should mean that it shouldn't matter that there are 5 pings and the host check is only 1 ping which should resolve the bottleneck of serialised host checks. I'm at a loss as to why performance has been impacted so severely. Maybe I need to abandon the service checks altogether and just have a host check. I'm reluctant to do this because I get very useful information from 5 pings, ie packet loss and high rta which is particularly handy for checking volatile links such as ADSL. Maybe that is the trade-off, fast host checking with no useful stats or slow host checking with useful stats. Just noticed this in your original email: Host Check Execution Time: 0.03 / 10.04 / 0.843 sec This means that some of your host checks are taking 10 seconds, which is, funnily enough, the timeout period for check_ping. So the -p 1 will still take 10 seconds if the routers are not responding. You can use a timeout flag for check_ping (but is only supported on some OSes). I guess check_icmp is a better bet here. Ton http://www.altinity.com T: +44 (0)870 787 9243 F: +44 (0)845 280 1725 Skype: tonvoon - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] Severe peformance issue during major network outage
Ton Voon wrote: On 11 May 2007, at 20:25, Aidan Anderson wrote: First of all, thank-you for the replies! The majority of devices that I monitor are routers/vpn devices and I have (on the documentation's advice) not set active checks on the hosts and instead I've added check_ping as a service on each of these hosts to do 5 pings as follows: check_ping -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$ -p 5 For the host check I already use as you suggested a check_ping that only does one ping as follows: check_ping -H $HOSTADDRESS$ -w 3000.0,80% -c 5000.0,100% -p 1 My understanding was that if the service check failed it would then abandon the service check altogether and move onto the host check which is only 1 ping. The fact that the service checks are parallelised should mean that it shouldn't matter that there are 5 pings and the host check is only 1 ping which should resolve the bottleneck of serialised host checks. I'm at a loss as to why performance has been impacted so severely. Maybe I need to abandon the service checks altogether and just have a host check. I'm reluctant to do this because I get very useful information from 5 pings, ie packet loss and high rta which is particularly handy for checking volatile links such as ADSL. Maybe that is the trade-off, fast host checking with no useful stats or slow host checking with useful stats. Just noticed this in your original email: Host Check Execution Time: 0.03 / 10.04 / 0.843 sec This means that some of your host checks are taking 10 seconds, which is, funnily enough, the timeout period for check_ping. So the -p 1 will still take 10 seconds if the routers are not responding. You can use a timeout flag for check_ping (but is only supported on some OSes). I guess check_icmp is a better bet here. Ton Hi Ton, Well spotted, thank-you. check_icmp here we come :) thanks Aidan - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
[Nagios-users] Active Host Checks on Nagios 2.5
Hello all,
I have a problem where Nagios doesn't execute the active host checks at
all. My system is set up in the following way:
I have about 1000 machines w/ their services set to disable active
check, and get all state info from an external command file (passive
checks).
To this I added 2 hosts w/ services in which I've enabled active checks,
and provided a check command (config below). What happens is the
services get actively checked and updated, but Nagios assumes the host
is up (I guess because the services are returning values), and never
executes the host check. This is troubling because the host check
provides me with important data.
In another instance, I have a host with active check enabled, and its
services' active checks disabled. Here, Nagios just keeps the host and
all its services in a pending stage until the services return with
information, again never executing the host check.
Any insight would be extremely helpful. Thanks!
-Andrew
Config of Host:
Template:
define host{
namegeneric-host-active; The
name of this host template
notifications_enabled 1 ; Host notifications are
enabled
event_handler_enabled 1 ; Host event handler is
enabled
flap_detection_enabled 1 ; Flap detection is
enabled
failure_prediction_enabled 1 ; Failure prediction is
enabled
process_perf_data 1 ; Process performance
data
retain_status_information 1 ; Retain status
information across program restarts
retain_nonstatus_information1 ; Retain non-status
information across program restarts
active_checks_enabled 1 ;
passive_checks_enabled 1 ;
register0 ; DONT REGISTER THIS
DEFINITION - ITS NOT A REAL HOST, JUST A TEMPLATE!
}
Host:
define host{
use generic-host-active; Name of host template
to use
host_name NagiosServer
alias NagiosServer
hostgroups Nagios
checks_enabled 1
check_command check_nagios
address 127.0.0.1
max_check_attempts 10
check_period24x7
notification_interval 120
notification_period 24x7
notification_optionsd,r
contact_groups admins
}
Command:
define command{
command_namecheck_nagios
command_line$USER1$/check_nagios.pl
}
-
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Re: [Nagios-users] Active Host Checks on Nagios 2.5
On Fri, 2007-05-11 at 18:31 -0400, Andrew Tjang wrote: Hello all, I have a problem where Nagios doesn't execute the active host checks at all. My system is set up in the following way: I have about 1000 machines w/ their services set to disable active check, and get all state info from an external command file (passive checks). To this I added 2 hosts w/ services in which I've enabled active checks, and provided a check command (config below). What happens is the services get actively checked and updated, but Nagios assumes the host is up (I guess because the services are returning values), and never executes the host check. This is troubling because the host check provides me with important data. This is normal nagios behavior. If you want the data a host check would provide even when there are no service state changes (which is the only condition under which host checks will normally run), you should probably consider running it also as a service check. - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
