Openfire Spark login failure - domain controller change
On trying to add a new OpenFire instance today it was found that the admin login to the web page for the OpenFire instances and the Spark client logins were failing. (Essentially each instance is a...
View ArticleForcing /var/lock/subsys file if init script didn't start a given service?
Today I was creating a new init script on RHEL6. This isn't something I've had to do often. I ran into the common problem that although the new script successfully started and stopped the service from...
View ArticleDell Dset dependent on version of Dell OpenManage
During an issue overnight I attempted to run the latest Dell Dset version 3.5.1 for 64bit on RHEL 6.1. This didn't complete. It just hung. By doing "ps -ef |grep dset" I was able to see the dset child...
View ArticleUDF mount works on RHEL6 & CentOS6 but not RHEL5 & CentOS5
On receiving an install media today I tried mount it on my RHEL5 system: mount /dev/hdc /mnt/cdrom But that errored out: mount: block device /dev/hdc is write-protected, mounting read-only mount: wrong...
View ArticleNagios check_disk works at local host but not via check_nrpe
We ran into something we've not seen here before. We run a Nagios master server with Nagios Core 3.3.1. We have nrpe version 2.12 on the servers being monitored (clients) and use check_nrpe v2.12 from...
View Articletimer.c:331: fatal error: RUNTIME_CHECK(isc_time_no w((&now)) == 0) failed
Posting this because all I found on line were multiple links to a single google post about this error. On a RHEL5.10 system this morning I did a "dig" and got the error: timer.c:331: fatal error:...
View ArticleNagios "(Host Check Timed Out)" - RESOLVED
We had an issue with a few servers showing as CRITICAL in Nagios with"(Host Check Timed Out)" for the host check itself even though all services were displaying as OK. Today I finally realized the...
View ArticleInterface reverts to different zone in firewalld RHEL7 (SOLVED)
We recently setup a couple of new DMZ servers so decided to use zones "internal" and "external" rather than zone "public" (which RHEL7 uses by default). We also set "internal" as the "default" in...
View ArticleRunning jnlp on Windows 7 as Administrator
OK - This isn't really Linux but is related to work I do as a System Admin wherein we use Cisco DCNM (Fabric Manager) to manage our Cisco MDS 9513 SAN switches. In addition to installing the Fabric...
View ArticleCLI to get Oracle Supply Network email attachments
I'm writing this up because I've often seen the question "How do I extract email attachments at command line?". I had to figure out how to use various tools to do this recently and figured I'd share...
View ArticleIt runs from command line but not from cron or init script
This question has been posted many times over the years both here at LQ and other sites. Accordingly I'm making this a blog post in the hopes people will find it useful. When one run things at command...
View ArticleRHEL5 won't support TLSv1.1 or higher
We found the version of curl provided for RHEL5 does not include the flags "--tlsv1.1" or "--tlsv1.2" provided by later versions of curl. This means CentOS5 curl does not include/support the flags...
View ArticleMigrating SAN storage from RHEL 5.9 to RHEL 6.8
I've had to migrate multiple Oracle instances from RHEL 5.9 to RHEL 6.8 because we're replacing an old server. This is Oracle 11gR2 using ext4 filesystems (not RAC/GRID, not using ASM). Just wanted to...
View ArticlePERC H800 in non-Dell PowerEdge system
We had a PERC H800 MegaRaid adapter in one of our Dell PowerEdge R910 systems. We had a Dell MD1220 array attached to that. We bought a new SuperMicro based system and initially put the PERC H800 in...
View ArticleUse of dollar sign ($) in Nagios service checks
Some MS Windows services have a literal dollar sign ($) when viewed in Windows Services. Most notably are MS SQL databases where the service name is MSSQL$DBNAME. NOTE: In the above and what follows,...
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