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How to fix OP5 monitor execution time warning

07.01.2017
Tom Huerlimann

In case you have a lot of monitors configured and/or monitors who will take some time until they are executed, it can happen that the OP5 internal monitor throws a […]

How to fix non working RRD graphs after uncontrolled OP5 shutdown

02.01.2017
Tom Huerlimann

Check if data files are updated Goto RRD data directory # cd /opt/monitor/op5/pnp/perfdata Goto the host’s RRD data directory and check if the files are outdated # cd /opt/monitor/op5/pnp/perfdata/gepacsdb.health.root.loc # […]

How to configure OP5 to send SMS via Telit HT910G

02.12.2016
Tom Huerlimann

Connect Add your SIM card to the Telit GSM modem and attach it via USB port to your server. To find the port where your GSM modem is attached, execute the […]

How to install Google Chrome 56 on CentOS7

22.11.2016
Tom Huerlimann

Google Chrome is a freeware web browser developed by Google Inc. Google Chrome team proudly announced the release of Google Chrome 56 on January 25, 2017. The actual version is […]

How to install xrdp on CentOS7

12.11.2016
Tom Huerlimann

xrdp is an Open Source Remote desktop Protocol server, which allows you to RDP to your Linux server from Windows machine; it is capable of accepting connections from  rdesktop, freerdp, […]

How to set english as default language in console for root in CentOS7

02.11.2016
Tom Huerlimann

Execute following commandecho “export LANG=en_US.UTF-8” >> ~/.bashrc

How to fix CentOS 7 network card down after power-on or reboot

02.11.2016
Tom Huerlimann

Check /etc/sysconfig/network # cat /etc/sysconfig/network | grep -i networking NETWORKING=no Make sure the value of NETWORKING is set to ‘yes’ Check /etc/sysconfig/network-scripts/ifcfg-eth0 # cat /etc/sysconfig/network-scripts/ifcfg-eth0  | grep -i onboot ONBOOT=no Make sure […]

How to fix CentOS 7 does not poweroff or reboot (GURUB2)

02.11.2016
Tom Huerlimann

BIOS Requirement Make sure your BIOS is supporting ACPI If you can: Configure Max CPU C-State to C7 (Read More) Install ACPI # yum -y install acpid systemctl start acpid […]

How to reinstall WSUS on Windows 2012 R2

23.09.2016
Tom Huerlimann

To re-install WSUS with a clean database i.e. no previous configuration, run the following procedure (powershell commands). Remove all WSUS components – Uninstall-WindowsFeature -Name UpdateServices,Windows-Internal-Database,Iis – Remove-WindowsFeature -Name UpdateServices,UpdateServices-DB,UpdateServices-RSAT,UpdateServices-API,UpdateServices-UI-IncludeManagementTools – Delete C:\Windows\WID […]

How to execute bash-script on a remote host and get the output locally

14.09.2016
Tom Huerlimann

Make sure you have enabled passwordless SSH logins to the remote host. Use bash to load environment variables that are required by the remote-script ssh root@$10.37.25.145 bash -c “/local/app/myscript.sh” Or use the command […]

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