Issues with Tomcat7 on RHEL7
- Feb
- 01
On RHEL7, up until tomcat v7.0.59 Redhat maintained backwards compatibility with RHEL6 structures. Once you upgrade to tomcat 7.0.70-x all that changes. Two things specifically: First: One big change is the use of $CATALINA_OPTS, if you have multiple lines defining various $CATALINA_OPT properties your installation will break. Once you upgrade you must specify all of […]
read moreNetwork Interface Name in rhel7
- Dec
- 07
Anyone who has installed rhel7 knows how annoying it is to check you network and not see eth0. Perhaps it is just me then… Regardless here are instructions on how to change it: First you need to know the name of the network adapter in use, you can look in /etc/sysconfig/network-scripts/ifcfg-eno##### or run this command: […]
read moreyum Invalid System Credential error
- Sep
- 30
I ran across the following yum error after migrating a system from being a client of Satellite 5.6 to Satellite 6.1. First here is the error: # yum update Loaded plugins: package_upload, priorities, rhnplugin, search-disabled-repos, security, subscription-manager There was an error communicating with RHN. RHN Satellite or RHN Classic support will be disabled. Error Message: […]
read moresystemd commands, hints and cheatsheet
- Apr
- 15
List all running services # systemctl Start/stop or enable/disable services Activates a service immediately: # systemctl start foo.service Deactivates a service immediately: # systemctl stop foo.service Restarts a service: # systemctl restart foo.service Shows status of a service including whether it is running or not: # systemctl status foo.service Enables a service to be started […]
read morePassword Recovery in Redhat 7
- Feb
- 11
Forgot your password on your rhel7 server? Well there are some differences to process from rhel6. Here is how you do it. With SELinux and systemd in the mix we have to deal with that. Here is the procedure of what needs to be done in order to recover a forgotten root password on Redhat […]
read moreTo reboot or not to reboot?
- Jun
- 10
You have patches to apply, we all know that if there are kernel patches that you need to (or at least should) restart/reboot the server. But what about other packages? There are a few non-kernel patches which can cause havoc if you spply them and do not reboot the server. The biggest package that most […]
read more