Tag Archives: RHEL

Migrate and upgrade Tenable Security Center from RHEL6/CentOS6 to RHEL7/CentOS7

Overview I had Tenable Security Center running on a RHEL6 VM which scans around 1000 hosts several times a week.¬†REHL6 is getting a bit long-in-the-tooth and also there was a need to upgrade to the latest and greatest version of … Continue reading

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How to prevent audit logs appearing in /var/log/messages – RHEL7

Overview For RHEL7. This took more work than I anticipated. My goal was this: Write audit logs to /var/log/audit Forward audit and syslog to central logging server Audit logs to NOT appear in /var/log/messages The items 1 and 2 were … Continue reading

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Adding a custom unit file RHEL7, for swatch

swatch is a Linux tool for watching (it uses ”tail -f”) log files and then demonizes it. I had a need to know when a host needed rebooting after yum-cron had updated the kernel, rather than logging into each host … Continue reading

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Samba troubleshooting tips & tricks

You are having problems getting samba to do your beck and call, and it’s not working as it should, well here a few things to help you diagnose things – it’s assumed you have the basic already configured. First, crank … Continue reading

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Rolling back Samba to an older version on RHEL

I recently had the need to downgrade the version of samba that comes with RHEL6.4 64-bit, I had authentication issues within our domain environment with the newer versions, older versions of samba seem to work fine, so I needed to … Continue reading

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Creating a SELinux policy for the named daemon in a chrooted BIND9 configuration

I recently configured chrooted BIND9 slave on RHEL6.4 64-bit, with SELinux enabled, with this enabled the named daemon failed to start, easily tested by disabling SELinux, and then starting it, which would then be successful.¬† So, I needed to create … Continue reading

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