Would anyone know how to associate multiple Elastic IPs to a single instance via the Amazon SDK ? In Ruby, I've tried to use both the aws-sdk and fog gems, which work fine for a single address, but error out trying to assign multiple.
Via the Web UI, this would be done by adding additional private ips and then assigning the public ip to the network interface + private ip however I'm not any private ip parameters in SDK.
We're a Canadian business on the east coast and will soon be opening up a new call centre in Australia. This new call centre will be handling our graveyard shift and will be overlapping with the current call centre. As such, I'd need to be able to (SIP) forward calls from our North American Asterisk PBX to Australia.
I'm thinking this may be a problem as it'd require 2+ trans-atlantic trips and would therefore cause a pretty hefty latency on all such calls.
Does anyone have any experience with this ? Or alternative implementations to suggest ?
:: Edit :: Would having a local Australian SIP trunk to provide local numbers cause additional issues ?
I'm trying to get my DRAC 5 card to do serial console redirection so that I can SSH into it and access the server's bios / grub / bootup / console.
So far, I can see/edit the bios, however as soon as grub starts the output get's all jumbled up. I'm assuming this may be configuration related (though at this point I can't see what).
Configs so far are :
BIOS
Grub2 on Ubuntu 10.04
The output itself, ends up appearing like :
��g������Bp)���'����-���C�i))a�R!{���ņ�BC!�?�i滑�����R!{���ņ߅C!'�����뤄����d�"�m�+-o�q��1Τ�Χ�+�ᤄ0�����餄����d�"?C!���s�����k뤄����d�"?C!��9u��!!!!��9�R!a���Ç$ �����i���r��:�R����B������d�"���!{�u����BS���/a�S�ć�3ߤ儤�S�����i�ąbi%)����������ąbi%)-���!)!��)������+�)�Ƥ�!����s!1Φ�r!����?/+��)))+))���!���������k������+a
I know there are settings specific for Xen, and I'll worry about those later. At this stage, I really need to get GRUB available so that I can test custom kernels. Either the kernel's I've been trying are failing or "grub-set-default" does nothing.
Annoying thing is, on a newer server / DRAC combo the configs work fine with the same version of Ubuntu, go figure -_-
Any ideas, troubleshooting steps, etc... would be a lifesaver.
I've recently been looking at getting some new load balancers for our environment as we are expecting to double our client base in the next 12 months.
Currently we have 400 public IPS serving 800 clusters ( 2 clusters / IP due to ports ) on Coyote Point Balancers, and distributing connections to 3 web servers serving about 6GBytes outgoing, 2Gbytes in per day. If we double, this would be about 800 IPs, possibly 1600 clusters, and about 6 servers per cluster ( for a total of 9600 so called "real servers" using Barracuda's lingo ).
Due to the amount of clusters, most solutions I've looked at ( Coyote, Barracuda, Loadbalancer.org ) seem to be unsure whether they'll be able to handle our planned growth, mostly due to health checks performed on the servers ... which makes total sense when you think of it.
So the fine folk at loadbalancer.org recommended that we may be better off offload the 400-800 public IPs, which we require for SSL eCommerce solutions, over to a forward facing router. From that point on, the router could do some mangling to route EXT_IP:443 to INT_IP:INT_PORT which would then allow us to reduce the Load Balancer configuration to 1 or 2 clusters, thus resolving the health check problem.
Does this idea make sense to yall ? Or would you have other recommendations to make ?
Secondly, what router would you recommend for such an undertaking ? I'd be looking at something that has some form of failover mechanism built in.
On a totally unrelated note, I've got to admit that I'm extremely pleased with the responses I got from loadbalancer.org. Their responses to my inquiries were surprisingly helpful ( i.e. I didn't feel as if I was taking to a sales guy trying to push something ). ( No I don't work for them, and sadly nor are they sending me free gear ).
I've got cpu, cpuacct and memory cgroups configured via /etc/cgconfig.conf ( cgconfig-bin on Lucid ). I can add new control groups, and assign processes to them however there does not seem to be a facility for changing the paramters of the root level memory cgroup ( the actual mount point ).
How would one best set such parameters in a clean manner withoput c
For example, I've the memory cgroup mounted to /var/run/cgroup/memory. I'd like to have /var/run/cgroup/memory/memory.use_hierarchy set to 1 on boot.
I've got Apache configured with 336 Name Based Virtual hosts within a single apache configuration file. Each of these VirtualHosts is identically configured and resemble :
<VirtualHost *:80>
DocumentRoot *docroot*
ServerName *fqdn*
<Directory *docroot*>
AllowOverride All
</Directory> </VirtualHost>
<VirtualHost *:80>
ServerAdmin *admin email*
DocumentRoot *default docroot*
<Directory "*default docroot*">
Options Indexes FollowSymLinks MultiViews
AllowOverride None
Order allow,deny
allow from all
</Directory> </VirtualHost>
I've just added 4 new virtual hosts, and of those two are being completely ignored.
Checking the Apache access logs, I can see that the request is going through over the proper ServerName, but for some reason Apache won't dispatch properly. Nslookup is also returning the correct info.
Any ideas would be much appreciated.
I'm using Ubuntu Jaunty on a few machines and am in the process of backporting / custom compiling a few deb packages to update PHP and OpenSSL.
My question is though, should I also be recompiling all of the reverse depedencies for OpenSSL ? Currently, the servers are running 0.9.8g and I'm upgrading to 0.9.8o. I'm assuming that since they're just point releases it may not nescessarily be required / it won't break packages that dynamically link against it, however I would like to confirm this before I go ahead and perform the actual upgrade.
If I do end up having to rebuild the reverse dependencies, does anyone know of any existing tools I could use to speed things up ? Currently been using pbuilder with with a mix of existing ( newer ) Ubuntu source archives and some custom modifications to the packages, but havn't quite figured out yet how to inject these custom build packages into the pbuilder environment ( trying to compile my PHP against the updated OpenSSL however the pbuilder dependency checker installs g instead of o .. I'm assuming since it's check through apt ).
Any info would be useful. I'm fairly new to Debian packages and currently thinking it's a PITA compared to Gentoo / Arch -_-
I'm seeing a weird issue on our web servers where the Apache processes seem to be remaining in limbo with 1 or 2 threads. This is disconcerting for me since I was just thinking I wanted to impose a stricter ServerLimit so that I can more safely up my php memory_limit.
Would anyone know of a nice way to troubleshoot this? Figure out what the hell those processes are doing? What state they are in?
I'm not entirely sure, but I would assume that this is caused by the fact that we never restart the Apache service, and do execute 2-3 reloads a day for various reasons.
As an example, one of the Web Servers is sitting around bored while the other is fairly taxed :
PID PPID RES THREADS
*15608 1 29 MB 1
8880 1 2 MB 3
14989 1 0 MB 1
25029 1 0 MB 1
2115 15608 3 MB 2
13058 15608 361 MB 2
14556 15608 157 MB 27
19962 15608 23 MB 1
21219 15608 387 MB 3
21600 15608 3 MB 3
21828 15608 3 MB 2
30152 15608 3 MB 2
In this example, there's 3 processes which I'm assuming were once the control process (pre reload), which are still running for whatever reason. And of the processes attached to the new control process, a bunch are still up with 2-3 threads each.
From 11 hours later, a lot of those same PIDs are still around with 1 thread. You'd think if MaxRequests had been reached the darned thing would have quit.
memory usage report for apache2
pid count : 11
thread count : 46
shared mem usage : 670 MB
total resident size : 691 MB
total cpu usage : 79 %
total memory usage : 7 %
average mem / pid : 62 MB
process breakdown
PID PPID RES THREADS
*15608 1 29 MB 1
8880 1 2 MB 3
14989 1 0 MB 1
25029 1 0 MB 1
2115 15608 3 MB 2
19962 15608 23 MB 1
21219 15608 387 MB 3
21600 15608 3 MB 3
21828 15608 3 MB 2
29239 15608 238 MB 27
30152 15608 3 MB 2
process tree
|-apache2-+-3*[apache2---{apache2}]
| |-apache2
| |-2*[apache2---2*[{apache2}]]
| `-apache2---26*[{apache2}]
|-apache2---2*[{apache2}]
|-2*[apache2]
I've got Apache installed with the worker mpm which seems to have too many processes active in spite of the configurations in place. I'll detail the configs below :
StartServers 2
MinSpareThreads 10
MaxSpareThreads 25
ThreadsPerChild 25
MaxClients 150
Based on these settings, we should be seeing a maximum of 1 Apache control process (uid:root) and 6 Apache client processes (uid:www). This being due to MaxClients/ThreadsPerChild.
However, I'm seeing a total of 1 Apache control process and 9 Apache client processes.
init
-- apache2(root)
-- -- apache2(www)
-- -- apache2(www) -- 1 thread
-- -- apache2(www) -- 26 threads
-- -- apache2(www) -- 26 threads
init
-- apache2(www) -- 2 threads
-- apache2(www)
-- apache2(www)
-- apache2(www)
We do not make it a habit of restarting Apache nor the Server, and will perform a reload 2-3 times a day at times so as to add new VHOSTs.
Would anyone be able to enlighten me as to what might be causing this ? enter code here