Is anyone else having this problem with Nagios 3.2.1 (the current version)? It seems to go insane from time to time, and when I look, ownerships are messed up on nagios.cmd and config files, and nagios.cmd is occasionally transmogrified from a named pipe to a plain file (with the wrong ownership as well.) This causes Nagios to basically go insane, plugins don't report back, and my active checks all break, and everyone gets paged for no reason.
I've seen some comments that imply SELinux might somehow be responsible, and only on Red Hat / Centos. I'm running SELinux in "permissive" mode but I might as well get rid of it altogether. I'll report back if anything (doesn't) happen.
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Until I started this job, I didn't know about Whiptail. No link to project page here - it doesn't seem to exist as an Open Source project anywhere, but it comes with most Linux distros. This app uses curses to pop up dialogs, forms, and lists in a terminal. How come I didn't know about it until recently? I wouldn't have had to learn all that fancy web stuff.
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I needed a new server, and management found me an X4100 at a garage sale. Not a bad server, but it's been EOLed by Sun, and Sun either never shipped mpt tools with the box, dropped support, or they got tossed in the dumpster when Oracle moved in.
Anyway, you will probably want to monitor your LSI MPT raid if you find one, so here's how to do it if your distro does not come with the "mpt-status" command:
- Obtain mpt-status from http://freshmeat.net/projects/mptstatus/
- Obtain the X4100 resource CD from Sun. You may have to pay for this. Hopefully you got one with your box. I have an ISO file called X4100_X4200_ResourceCD_4.
- Install the mpt driver from the RPMs on the CD: mptlinux-4.00.05.00-1-rhel5.x86_64.rpm
- Activate the mptctl driver (your distro should have come with mptbase and mpt sas): "/etc/rc3.d/S99fusion.mptctl start". Set up an rc3.d link to start this driver on boot!
- You should see mptctl, mptsas, mptscsih (maybe), and mptbase in the output of lsmod at this point. If not, keep hunting for drivers.
- Also on the Sun CDROM is mptlinux-4.00.05.00-src.tar.gz. Create the directory and extract this source into /tmp/mptlinux-4.00.05.00-src.
- Extract the mpt-status source into /tmp/mpt-status-1.2.0.
- Edit the Makefile with:
KERNEL_PATH := /usr/src/kernels/2.6.18-164.15.1.el5-x86_64/include
CFLAGS := -Iincl -Wall -W -O2 \
-I${KERNEL_PATH} \
-I/tmp/mptlinux-4.00.05.00-src/message/fusion
- Make and - it works!
# ./mpt-status -i 2
ioc0 vol_id 2 type IM, 2 phy, 67 GB, state OPTIMAL, flags ENABLED
ioc0 phy 1 scsi_id 4 SEAGATE ST973401LSUN72G 0556, 68 GB, state ONLINE, flags NONE
ioc0 phy 0 scsi_id 3 SEAGATE ST973401LSUN72G 0556, 68 GB, state ONLINE, flags NONE
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Once again I am redoing our failed Symantec-Veritas Netbackup installation. There are a few things I'd rather be doing instead, like anything else, but we're going with ZManda this time, so it should be a less painful job this time.
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The Juniper project is back on the rails. The DHCP problem seems to be under control, through a combination of reducing DHCP lease times (to hours instead of days), and disabling ICMP blocking in Windows Firewall. It wasn't my decision to block ICMP. Sometimes you can be too paranoid for your own good. For example, ICMP is used to negotiate MTU sizes between disparate networks. I can tell you a story about a major website that blocked all ICMP and wasn't able to communicate with anyone running smaller-than-normal MTUs. Which is a lot of people.
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