Category: Computer and Server
Some CRM Shell Command
These are some notes about crm shell command to be used managing cluster. This article is not a “guide” or an “how to’s” but it is just a collection of messy notes. Main config file: /etc/ha.d/ha.cf /var/lib/heartbeat/crm/cib.xml (editable using crm) Cluster Status: #crm_mon ============ Last updated: Fri Mar 22 12:49:14 …
Zenoss zenjmx down – zenjmxjava ended unexpectedly
“zenjmxjava ended unexpectedly” is an error message that could be present in Zenoss event page (Zenjmx daemon): It happens when Zenjmx daemon stop (Zenjmx is used for Java Virtual Machine). It could be stopped due to port busy by other process. The default port range is 9988-9993. Using netstat and …
How to install phpMyAdmin in Centos
Install phpMyAdmin is very easy, but to to that you have to follow few steps. Install phpMyAdmin First of all you need to have installed the right repository: epel Here is how i installed it on my server: [root@patrizio ~]# wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm –2015-06-03 13:34:49– http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm Resolving dl.fedoraproject.org (dl.fedoraproject.org)… 209.132.181.25, 209.132.181.23, …
Manually remove DRBD Split Brain
Split Brain is an anormal situation that could happen, for example, when two node think to be the last one to be primary before a system reboot. Usually drdb has automatic system to remove DRBD Split Brain but if it doesn’t work you need to resolve it manually.In this example …
VNC VINO at boot
RPMBUILD
Introduction to RPMBUILD Rpmbuild is a tool useful to create .rpm packets which contain programs, documents, configuration files etc etc. To create rpm packet, RPMBUILD uses his own DIRECTORIES: SOURCES: contain source file (before rpm creation) SPECS: file .spec SRPMS: new source file (after rpm creation) RPMS: file rpm BUILD: …
Windows 10 – Disable/Enable Windows Defender
Kernel panic – not syncing: Attempted to kill init!
I received kernel panic error message after renaming a volume group without change the name also in the following files (if present): /etc/fstab, /etc/grub /etc/inittab To solve this problem you need installation CD of Centos (could be also in USB Drive) and boot in Rescue Mode. Boot in Rescue Mode …
Arp Caching in Windows Server – Reachable Time
Some CRM Shell Command
These are some notes about crm shell command to be used managing cluster. This article is not a “guide” or an “how to’s” but it is just a collection of messy notes. Main config file: /etc/ha.d/ha.cf /var/lib/heartbeat/crm/cib.xml (editable using crm) Cluster Status: #crm_mon ============ Last updated: Fri Mar 22 12:49:14 …
Zenoss zenjmx down – zenjmxjava ended unexpectedly
“zenjmxjava ended unexpectedly” is an error message that could be present in Zenoss event page (Zenjmx daemon): It happens when Zenjmx daemon stop (Zenjmx is used for Java Virtual Machine). It could be stopped due to port busy by other process. The default port range is 9988-9993. Using netstat and …
How to install phpMyAdmin in Centos
Install phpMyAdmin is very easy, but to to that you have to follow few steps. Install phpMyAdmin First of all you need to have installed the right repository: epel Here is how i installed it on my server: [root@patrizio ~]# wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm –2015-06-03 13:34:49– http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm Resolving dl.fedoraproject.org (dl.fedoraproject.org)… 209.132.181.25, 209.132.181.23, …
Manually remove DRBD Split Brain
Split Brain is an anormal situation that could happen, for example, when two node think to be the last one to be primary before a system reboot. Usually drdb has automatic system to remove DRBD Split Brain but if it doesn’t work you need to resolve it manually.In this example …
VNC VINO at boot
RPMBUILD
Introduction to RPMBUILD Rpmbuild is a tool useful to create .rpm packets which contain programs, documents, configuration files etc etc. To create rpm packet, RPMBUILD uses his own DIRECTORIES: SOURCES: contain source file (before rpm creation) SPECS: file .spec SRPMS: new source file (after rpm creation) RPMS: file rpm BUILD: …
Windows 10 – Disable/Enable Windows Defender
Kernel panic – not syncing: Attempted to kill init!
I received kernel panic error message after renaming a volume group without change the name also in the following files (if present): /etc/fstab, /etc/grub /etc/inittab To solve this problem you need installation CD of Centos (could be also in USB Drive) and boot in Rescue Mode. Boot in Rescue Mode …