Thursday Jan 01, 2009

Http proxy in a zone

Now that the new crossbow networking stack is in OpenSolaris I have been able to configure a transparent proxy server for the Sun Ray users. By having a zone act as the only route from the internal network the internet all the http traffic can now go through the proxy and hence benefit from the cache and all in one box.


Now all traffic from the internal network gets a default router of the squid zone's vnic0 from dhcp and the global zone routes via in internal network that I have called dmz0 to the squid zone. The internal network is not absolutley needed as the global zone could route via the internal network but some how that does not seem such a good set up. I have the naming of the vnics not quite the way I want it but that is really just cosmetic.

Here are the virtual nics:

: pearson FSS 3 $; pfexec dladm show-vnic        
LINK         OVER         SPEED  MACADDRESS           MACADDRTYPE         VID
vnic0        nge0         1000   2:8:20:b2:86:2       random              0
sshnic0      rtls0        100    2:8:20:2c:d7:cf      random              0
dmzpearson0  dmz0         0      2:8:20:ce:2e:43      random              0
dmzsquid0    dmz0         0      2:8:20:20:a2:69      random              0
: pearson FSS 4 $; 

and this is the configuration for the zone:

: pearson FSS 8 $; pfexec zonecfg -z squid info net
net:
	address not specified
	physical: vnic0
	defrouter not specified
net:
	address not specified
	physical: rtls0
	defrouter not specified
net:
	address not specified
	physical: dmzsquid0
	defrouter not specified
: pearson FSS 9 $; 

Then in the zone I have ipfilter configured to handle the usual NAT and also to forward web traffic to the proxy:

: pearson FSS 10 $; pfexec zlogin squid cat /etc/ipf/ipnat.conf   
#
# First the usual NAT entries to handle everything going out
#
map rtls0 192.168.1.0/24 -> 192.168.254.22/32
map rtls0 192.168.2.0/24 -> 192.168.254.22/32
#
# These next two lines forward traffic to port 80 to the transparent
# web proxy that is running in this zone
#
rdr vnic0 0.0.0.0/0 port 80 -> 127.0.0.1 port 3128 tcp
rdr dmzsquid0 0.0.0.0/0 port 80 -> 127.0.0.1 port 3128 tcp
: pearson FSS 11 $; 

Then remember to configure squid to accept the transparent proxy by adding the transparent line to the http_port option:

: pearson FSS 12 $; pfexec zlogin squid grep \^http_port /etc/squid/squid.conf
http_port 3128 transparent
http_port 8080
: pearson FSS 13 $;

Finally I had to remember to use routeadm(1m) to turn on routing in the zone, which was the first time I had run that command. No more messing around with files in /etc just run "routeadm -u -e ipv4-forwarding" to enable it in the zone and I was done.

All in all the solution is pretty pleasing.

Tuesday Mar 11, 2008

zone copy, aka zcp.

After messing around with zones for a few minutes it became clear that it would be really useful if there was a zcp command that worked just like scp(1) but used zlogin as the transport rather than using ssh. For those cases when you are root and don't want to mess with ssh authorizations since you know you can zlogin without a password anyway.

Specifically I wanted to be able to do:

# zcp  /etc/resolv.conf bookable-129-156-208-37.uk:/etc

Well it turns out that this is really easy to do. The trick is to let scp(1) do the heavy lifting for you and use zlogin(1) act as your transport. So I knocked together this script. You need to install it on your path called “zcp” and then make a hard link in the same directory called “zsh”. For example:

# /usr/sfw/bin/wget --quiet http://blogs.sun.com/chrisg/resource/zcp.sh
# cp zcp.sh /usr/local/bin/zcp 
# ln /usr/local/bin/zcp /usr/local/bin/zsh
# chmod 755  /usr/local/bin/zsh

Now the glorious simplicity of zcp, I'll even trhow in recursvice copy for free:

# zcp -r /etc/inet bookable-129-156-208-37.uk:/tmp
ipqosconf.1.sample   100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  2503       00:00    
config.sample        100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  3204       00:00    
wanboot.conf.sample  100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  3312       00:00    
hosts                100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   286       00:00    
ipnodes              100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   286       00:00    
netmasks             100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   384       00:00    
networks             100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   372       00:00    
inetd.conf           100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  1519       00:00    
sock2path            100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   566       00:00    
protocols            100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  1901       00:00    
services             100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  4201       00:00    
mipagent.conf-sample 100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  6274       00:00    
mipagent.conf.fa-sam 100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  6232       00:00    
mipagent.conf.ha-sam 100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  5378       00:00    
ntp.client           100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   291       00:02    
ntp.server           100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  2809       00:00    
slp.conf.example     100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  5750       00:00    
ntp.conf             100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   155       00:00    
ntp.keys             100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   253       00:00    
inetd.conf.orig      100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  6961       00:00    
ntp.drift            100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|     6       00:00    
ipsecalgs            100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   920       00:00    
ike.preshared        100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   308       00:00    
ipseckeys.sample     100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   510       00:00    
datemsk.ndpd         100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|    22       00:00    
ipsecinit.sample     100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  2380       00:00    
ipaddrsel.conf       100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   545       00:00    
inetd.conf.preupgrad 100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  6563       00:00    
hosts.premerge       100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   112       00:00    
ipnodes.premerge     100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|    61       00:00    
hosts.postmerge      100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|   286       00:00    
ipqosconf.2.sample   100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  3115       00:00    
ipqosconf.3.sample   100% |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*|  1097       00:00    
# 

I'll file and RFE for this to go into Solaris and update this entry when I have the number.

Update: The Bug ID is 6673792. The script now also supports zsync and zdist although niether of those have been tested yet.

Sunday Nov 26, 2006

No cycling this Sunday

No cycling today as I'm looking after the kids and after rugby training was abandoned due to the hail for once I was happy not to be out in the middle of no where.

Apologies to the subscribers to planet cycling which was currently suffering from the double failure of my internet connection being “upgraded” which for some reason results in “up to 10 days where the service is unstable” and during this time my ISP is even less interested in investigating faults than usual. Since the router seem incapable of reconnecting when I loose service I have to restart it. Thanks to smnp, expect and ssh I now have a script that should do exactly that so the extended failures should be a thing of the past. However since running the script the service has stayed up so I can't be 100% sure it works.

The second failure was user error. I failed to notice that the latest operating system upgrade moving to build 53 of Nevada had overwritten one of the web server configuration files. I've fixed that and reverted the web server back into it's own zone. Build 53 would appear to be one of those releases that you should run to install if you use the desktop lots of nice new features not least firefox 2.0.

Tags:

Saturday Sep 23, 2006

Web Server moved to new server

The new server now serves http://planetcycling.org. Using the bundled apache2 httpd running in a zone. Nice and easy to get working as there is already an smf manifest.

The reasons for the zone are:

  1. Paranoia. If there is security bug in the web server, the zone should buy some time.

  2. It allows my to bring a replacement service up on another zone and verify that all is well before making it live. The planet software needs to be upgraded but this will take some time so to get the Qube shutdown.

  3. Because I can.

Tags:

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This is the old blog of Chris Gerhard. It has mostly moved to http://chrisgerhard.wordpress.com

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