system status

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HASupport
Posts: 19
Joined: Wed Apr 11, 2018 2:12 pm

system status

Post by HASupport »

Hello Support,

There was a strange behavior of system status in NLS
my Elastic search Database and Logtash collector are behaving strangely
I have restarted both, but status is same

Please have a look of the screen shot
Last edited by swolf on Wed Jul 18, 2018 4:18 pm, edited 1 time in total.
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tmcdonald
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Re: system status

Post by tmcdonald »

9 times out of 10 this is going to be related to memory. What is the RAM installed vs used on this system?
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HASupport
Posts: 19
Joined: Wed Apr 11, 2018 2:12 pm

Re: system status

Post by HASupport »

There are four instances please see the screen shot accordingly

RAM = 32GB/instance (32 GB * 4)
Last edited by swolf on Wed Jul 18, 2018 4:18 pm, edited 1 time in total.
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cdienger
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Re: system status

Post by cdienger »

1 out of 10 times it will be a DNS problem - make sure that your client(the machine running the browser accessing NLS) can resolve the hostname(vhal1nls001.healthcare.huarahi.health.govt...) and that the NLS machines can do both a forward and reverse lookup for all hostnames and IPs listed:

nslookup vhal1nls001.healthcare.huarahi.health.govt...
nslookup 10.17.31.50
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HASupport
Posts: 19
Joined: Wed Apr 11, 2018 2:12 pm

Re: system status

Post by HASupport »

so you are saying it may be a DNS issue?
HASupport
Posts: 19
Joined: Wed Apr 11, 2018 2:12 pm

Re: system status

Post by HASupport »

Hi Support

I have rebooted nagios log server, still the status is the same
kindly support
Last edited by swolf on Wed Jul 18, 2018 4:17 pm, edited 1 time in total.
Reason: Removed attachment as requested in ticket
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cdienger
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Re: system status

Post by cdienger »

Have you verified the DNS? Can your client resolve the hostname to an IP?
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HASupport
Posts: 19
Joined: Wed Apr 11, 2018 2:12 pm

Re: system status

Post by HASupport »

nslookup 10.17.31.50
-bash: nslookup: command not found
nslookup vhal1nls001
-bash: nslookup: command not found
HASupport
Posts: 19
Joined: Wed Apr 11, 2018 2:12 pm

Re: system status

Post by HASupport »

may be nslookup install is not available,


as a cluster,
it is pinging all the four instances
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cdienger
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Re: system status

Post by cdienger »

To install nslookup:

yum -y install bind-utils

Also try running nslookup on your client machine(the machine where the browser is running).
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