Update Nagios Web Page Title
I have several Nagios web sites I monitor. Problem is you open multiple tabs in firefox and all you see is the Nagios icon and the word “Nagios” so I cant tell which tab is for which server. So I … Continue reading →
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Using nagios to monitor port status on ethernet switches
First, we need to identify the id of the ports we want to monitor. On the console of the machine you are running nagios, execute the following commands snmpwalk -v 1 -c MySNMPCommunity my.switch.ip.address ifDescr you will get something like … Continue reading →
virsh list returns nothing
I did a “dnf update” on a Fedora 38 and after rebooting executing “virsh list –all” I got: Id Name State ————————- I tried running virt-manager and it had problems connecting – it would list my virtual machines, then disconnect … Continue reading →
How to increase the size of tty font
You are running a linux system in text mode. You are using either Physical monitor and keybord Remote access console (example: Dell iDRAC) A Virtualized Console on qemu In any of the above applications – due to the monitor size … Continue reading →
LetsEncrypt on Zimbra 9 and Rocky Linux 8
First – install Zimbra Then execute: yum -y install epel-release /usr/bin/crb enable yum -y install certbot create a file named /usr/local/sbin/letsencrypt-zimbra #!/bin/bash FQDN=`hostname –fqdn` /usr/sbin/service zimbra stop /usr/bin/certbot certonly -d $FQDN –standalone -n –preferred-chain “ISRG Root X1” –agree-tos –register-unsafely-without-email –key-type … Continue reading →
Zimbra 9 Certificate Use -nomac if MAC not required and PKCS12KDF support not available.
Installing a certificate on Zimbra 9 and I get the following error message: ** Creating file ‘/opt/zimbra/ssl/zimbra/jetty.pkcs12’ ERROR: openssl pkcs12 export to ‘/opt/zimbra/ssl/zimbra/jetty.pkcs12’ failed(1): Error creating PKCS12 MAC; no PKCS12KDF support? Use -nomac if MAC not required and PKCS12KDF support … Continue reading →
Unable to start TLS: SSL connect attempt failed error:0A000086:SSL routines::certificate verify failed when connecting to ldap master.
On the machine you are trying to start zimbra on su zimbra zmlocalconfig -e ldap_starttls_required=false zmlocalconfig -e ldap_starttls_supported=0 then start zimbra After that – go look at all your certs on all the zimbra servers because you have something you … Continue reading →
Set time format to 24 hours at shell prompt
You type in date on your linx box and you get Tue Sep 5 5:08:49 PM CDT 2023 but you want it to read Tue Sep 5 17:08:49 CDT 2023 To make that happen execute localectl set-locale LC_TIME=”C.UTF-8″ Log off, … Continue reading →
Throttle processor speed in Linux
I have a system that runs in a environment that tends to be on the warm side. If the processor starts running at 3Ghz or higher, the processor starts some serious overheating. Applications I have running on this system do … Continue reading →
Zimbra is generating 100% disk space utilization alert continuously – and the disk is not full
The disk is not full – but getting disk space utilization alerts snapd uses loop devices and they are listed as 100% use. To get zimbra to ignore loop devices su – zimbra zmlocalconfig -e zmstat_df_excludes=’/dev/loop0:/dev/loop1:/dev/loop2:/dev/loop3:/dev/loop4:/dev/loop5:/dev/loop6′ zmstatctl restart References https://wiki.zimbra.com/wiki/Disable_Disk_Space_Monitoring_for_Loop_Devices … Continue reading →