Volodymyr Vrublevskyy
IT geek, Blogger and Traveler
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Installing Chef on Centos 6
Today we will install chef server in our home lab based on proxmox 3.4.6. So we have installed server 2cpu, 2Gb memory, Centos 6.7 First of all I switched…
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“Cannot run upgrade script on host” during upgrade from esxi 5.5 to 6.0
The host upgrade from ESXi 5.5 to ESXi 6.0 failed with the following error: „Cannot execute upgrade script on host“.
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The data service timed out because a back-end task took more than 120
Today I received error on my vm summary page in Vsphere web client: The data service timed out because a back-end task took more than 120 seconds. See the…
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Passwordless command line scripts with MySQL 5.6
I have several command line scripts to MySQL databases for zabbix statistic. These scripts set the password on the command line using the -p option. With MySQL 5.6, a new…
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How to monitor sql queries with zabbix
If you want to monitor some parameters in mysql database, you can do it with ODBC monitoring in Zabbix. ODBC monitoring corresponds to the Database monitor item type in…
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Cooking with Chef: How to deploy instance on AWS with knife
Today I want to try provisioning and configuring Amazon AWS instances with Chef. To do that I have: Free tier account on AWS Open Source Chef Server 12 Ubuntu…
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Free SSL certificate for 3 years and up to 100 domains
More and more people reconfigured their sites to ssl connection. So I decided to use ssl certificate and secure connection on my blogs too. The Chinese CA WoSign offers…
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Convert wildcard SSL to Java Keystore Format (JKS)
Today we need to get a wildcard SSL certificate into a Java Keystore format. First copy everything you need to a /tmp folder. There are gd_bundle.crt , domain.com.crt and domain.com.key
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Migrate vmware vm to proxmox
Hi. One of my clients use proxmox virtualization in Production. So I need to move one service machine created for them from vmware to proxmox. As for me the…
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Install Ruby 2.3.1 or any other version on Centos
1. Installing Recommended Packages There are few developemnt libraries required to run Ruby on Linux. Use following command to install recommended packages on your server using yum. #…
