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Dec
21
comment Difference between “Redirect permanent” vs. mod_rewrite RewriteRule
> Is one better then the other?
Oct
14
comment How are different apps under the same domain configured?
The members of ServerFault are not going to know specifics about your companies use of AWS.
Oct
13
comment Get virtual host config without config file
I agree. If you don't have mod_info installed already, you probably cannot retrieve the configuration for that one VirtualHost.
Oct
13
comment How are different apps under the same domain configured?
This question is way too local. There are a hundred ways that this could be configured and you will need to ask your coworkers for guidance.
Oct
13
comment Get virtual host config without config file
Technically, apachectl first checks in the global system configuration files (On RHEL, this would normally be /etc/sysconfig/httpd). From there, it should receive the correct ServerRoot setting. On my setting, /etc/sysconfig/httpd says OPTIONS='-d /etc/httpd', and therefore httpd is called as httpd -d /etc/httpd. /etc/httpd would need to include the sites-enabled directory somewhere.
Oct
13
comment Get virtual host config without config file
You would think that a program running in memory would be able to show you it's configuration as it currently stands.
Sep
23
comment How can I forward old access logs to a new syslog destination (redhat)?
On my RHEL6 systems, logger does not support the -n flag.
Sep
17
comment VMotion Migrations and MySQL Databases
Databases under 50GB might be fine. It really has more to do with the rate of change, and can VMware live migration keep up. Doing a "FLUSH TABLES WITH READ LOCK;" would reduce the rate of change and really help with any migration, but that means that the database is read-only for a period of time.
Sep
17
comment VMotion Migrations and MySQL Databases
Live migration works fine for smaller databases, but becomes problematic for larger databases or databases. Can you imagine live-migrating 4TB worth of data? Even the deltas could be quite large. It can work, and people do it, but you'll need to put a lot of thought into the architecture. Most other shops seem to use another form of HA.
Jul
24
comment ZFS reads on FreeBSD incredibly slow
FWIW, our experience on FreeBSD 8 & 9 shows that ZFS snapshots have no notable impact on performance; unlike UFS and LVM snapshots which seem to suffer performance impacts after only a few snapshots. We've had 30+ snapshots on some very active filesystems. But that's just our experience.
Jul
19
comment freebsd-update from 8.3-RELEASE to 9.0-RELEASE: How to deal with dozens of diffs?
My systems do have that setting (I think it's a default). The trouble is, the files are slightly modified and FreeBSD forces a diff for those (The $ID$ tag is different between 8 -> 9, the root password is set, etc.). It's a known problem that FreeBSD never fixed. Now that we're on FreeBSD 9, this may not be an issue upgrading to 10 if we decide to stay with FreeBSD.
Jul
16
comment Database backup encryption
Can you elaborate about generating multiple keys? Would we just encrypt with multiple --recipient statements?
Jul
9
comment How to maintain site.pp with many nodes?
Would an ENC be a reasonable solution to this question? I would love to see someone comparing site.pp to ENCs.
Jul
9
comment How to maintain site.pp with many nodes?
@Felipe There is no simple alternative that I know of. Classifying nodes using files like site.pp or import 'nodes/*.pp has fallen out of favor in the Puppet community, particularly by PuppetLabs. I'm still not clear what the best alternative is, but it seems that the favored workarounds are Heira or use an ENC such as The Foreman or Puppet Enterprise. Discussion of those alternatives are fairly detailed and worth a whole discussion. I did try: ask.puppetlabs.com/question/10975/…
Jul
3
comment Difference between RH-Firewall-1-INPUT and INPUT
The RH-Firewall-1-INPUT chain was indeed removed with EL6. However, I cannot find any mention of this in the Release Notes. Does anyone have a link to the authoritative documentation stating the RH-Firewall-* should be replaced with INPUT? This is the source of much confusion for EL6 admins.
Jul
2
comment List of packages for RH 5.x
RH 5.3, 5.4, and 5.4 Beta are very old versions of RHEL 5. The latest available version of RHEL5, and the only version that should be used these days, is RHEL5.11. Anything older has missed out on security and stability updates and is at risk of being hacked. Consider a move to RHEL6 or RHEL7, which are the new versions of RHEL.
Jul
1
comment Changing network boot order (pxe) using ipmitool
> It is very,very rare there are multiple physical Ethernets on a server that support IPMI. I'm not sure what you mean by this. Every Intel and Supermicro server that I've had has two NICs on the back. NIC0 does the PXE by default.
Jul
1
comment Changing network boot order (pxe) using ipmitool
Using Supermicro X8 & X9 motherboards, you cannot specify the interface. You can only tell the system to PXEboot, and it will PXEboot in the order specified in the BIOS. You can reorder the PXEboot order in the BIOS, and change/disable which interfaces provide PXE, but that's all I've been able to do.
May
18
comment famd/gamin timeout issue with courier-imap
Okay. Our experimentation shows that we can reduce the number of errors by disabling IMAP_ENHANCEDIDLE, possibly disabling TLS_CACHEFILE & TLS_CACHESIZE (This is suggested in the config file). This issue also seems to be resource related, so we're looking at more general resource tweaks.
May
15
comment famd/gamin timeout issue with courier-imap
Tonin, did you ever figure out the answer to this? We're running into a similar error. CentOS 6, VMware ESXi, Courier IMAP. No obvious load issues.