Diff for /wikisrc/amazon_ec2.mdwn between versions 1.21 and 1.23

version 1.21, 2011/02/19 02:42:58 version 1.23, 2011/02/19 04:34:56
Line 77  These instances are tied to a *region* ( Line 77  These instances are tied to a *region* (
   
 AKI, or *Amazon Kernel Image*, are a specific type of image. It represents the Xen guest para-virtualized kernel, as used by an AMI. Certain AKIs are allowed to boot customized operating systems, e.g. those that are still not officially supported by Amazon. Thanks to [PyGrub](http://wiki.xensource.com/xenwiki/PyGrub), it can boot a kernel that resides inside an AMI's snapshot.  AKI, or *Amazon Kernel Image*, are a specific type of image. It represents the Xen guest para-virtualized kernel, as used by an AMI. Certain AKIs are allowed to boot customized operating systems, e.g. those that are still not officially supported by Amazon. Thanks to [PyGrub](http://wiki.xensource.com/xenwiki/PyGrub), it can boot a kernel that resides inside an AMI's snapshot.
   
   # Using pre-made AMIs
   
   XXX TODO
   
 # Build-up your NetBSD system  # Build-up your NetBSD system
   
 ## Fetch and build NetBSD  ## Fetch and build NetBSD
Line 90  This tutorial assumes that you will buil Line 94  This tutorial assumes that you will buil
 [Details regarding on how you can fetch *src* are given in the NetBSD's guide](http://www.netbsd.org/docs/guide/en/chap-fetch.html). Here are the basic commands you should type to build and install NetBSD under */mnt/ec2*:  [Details regarding on how you can fetch *src* are given in the NetBSD's guide](http://www.netbsd.org/docs/guide/en/chap-fetch.html). Here are the basic commands you should type to build and install NetBSD under */mnt/ec2*:
   
 [[!template id=programlisting text="""  [[!template id=programlisting text="""
 # fetch src.tgz  cd /usr/
 # decompress  # grab a recent src.tgz file (use curl(1), ftp(1), wget(1), ...)
 # build toolchain, kernel and distribution  ftp -a 'http://ftp.netbsd.org/pub/NetBSD/NetBSD-current/tar_files/src.tar.gz'
 # install in /mnt/ec2  # Decompress
   tar -xzpf src.tar.gz
   cd src
   # build distribution and kernel
   ./build.sh -O ../obj -T ../tools -D ../dest -R ../release -m amd64 -U distribution
   ./build.sh -O ../obj -T ../tools -m amd64 kernel=XEN3_DOMU
   # install distribution in /mnt/ec2
   ./build.sh -O ../obj -T ../tools -D ../dest -R ../release -U install=/mnt/ec2
 """]]  """]]
   
 # Configuration of your NetBSD EC2 tree  # Configuration of your NetBSD EC2 tree
Line 105  Under */mnt/ec2*, edit the files to add  Line 116  Under */mnt/ec2*, edit the files to add 
 [[!template id=filecontent name=etc/rc.conf text="""  [[!template id=filecontent name=etc/rc.conf text="""
 rc_configured=YES  rc_configured=YES
   
 hostname=NetBSD-EC2-$(uname -m)  
 sshd=YES # for remote shell access to instance  sshd=YES # for remote shell access to instance
 """]]  """]]
   
Line 114  sshd=YES # for remote shell access to in Line 124  sshd=YES # for remote shell access to in
 PermitRootLogin without-password  PermitRootLogin without-password
 """]]  """]]
   
 This file is needed if you want to login via the SSH key pair created previously:  This file is needed if you want to login via the EC2 SSH key pair created previously:
   
 [[!template id=filecontent name=etc/rc.d/ec2-init text="""  [[!template id=filecontent name=etc/rc.d/ec2-init text="""
 #!/bin/sh  #!/bin/sh
Line 129  name="ec2_init" Line 139  name="ec2_init"
 start_cmd="ec2_init"  start_cmd="ec2_init"
 stop_cmd=":"  stop_cmd=":"
   
 SSH_KEY_URL="http://169.254.169.254/latest/meta-data/public-keys/0/openssh-key"  METADATA_URL="http://169.254.169.254/latest/meta-data/"
   SSH_KEY_URL="public-keys/0/openssh-key"
   HOSTNAME_URL="hostname"
   
 SSH_KEY_FILE="/root/.ssh/authorized_keys"  SSH_KEY_FILE="/root/.ssh/authorized_keys"
   
 ec2_init()  ec2_init()
Line 137  ec2_init() Line 150  ec2_init()
         (          (
         umask 022          umask 022
         # fetch the key pair from Amazon Web Services          # fetch the key pair from Amazon Web Services
         EC2_SSH_KEY=$(ftp -o - "$SSH_KEY_URL")          EC2_SSH_KEY=$(ftp -o - "${METADATA_URL}${SSH_KEY_URL}")
   
         if [ -n "$EC2_SSH_KEY" ]; then          if [ -n "$EC2_SSH_KEY" ]; then
                 # A key pair is associated with this instance, add it                  # A key pair is associated with this instance, add it
                 # to root 'authorized_keys' file                  # to root 'authorized_keys' file
                 mkdir -p $(dirname "$SSH_KEY_FILE")                  mkdir -p $(dirname "$SSH_KEY_FILE")
                   touch "$SSH_KEY_FILE"
                 cd $(dirname "$SSH_KEY_FILE")                  cd $(dirname "$SSH_KEY_FILE")
   
                 grep "$EC2_SSH_KEY" "$SSH_KEY_FILE"                  grep -q "$EC2_SSH_KEY" "$SSH_KEY_FILE"
                 if [ $? -eq 0 ]; then                  if [ $? -ne 0 ]; then
                         echo "Setting associated SSH key pair."                          echo "Setting EC2 SSH key pair: ${EC2_SSH_KEY##* }"
                         echo "$EC2_SSH_KEY" >> "$SSH_KEY_FILE"                          echo "$EC2_SSH_KEY" >> "$SSH_KEY_FILE"
                 fi                  fi
         fi          fi
   
           # set hostname
           HOSTNAME=$(ftp -o - "${METADATA_URL}${HOSTNAME_URL}")
           echo "Setting EC2 hostname: ${HOSTNAME}"
           echo "$HOSTNAME" > /etc/myname
           hostname "$HOSTNAME"
         )          )
 }  }
   
   
   load_rc_config $name
   run_rc_command "$1"
 """]]  """]]
   
 Create various files and directories:  Create various files and directories:
Line 161  Create various files and directories: Line 184  Create various files and directories:
 [[!template id=programlisting text="""  [[!template id=programlisting text="""
 cd /mnt/ec2  cd /mnt/ec2
 # Add proc and kern directories  # Add proc and kern directories
 mkdir proc kern  mkdir grub kern proc
 # EC2 network configuration, via DHCP  # EC2 network configuration, via DHCP
 echo "dhcp" > etc/ifconfig.xennet0  echo "dhcp" > etc/ifconfig.xennet0
 # Basic fstab entries  # Basic fstab entries
 cat > etc/fstab << EOF  cat > etc/fstab << EOF
 /dev/xbd1a /        ffs    rw 1 1  /dev/xbd1a /        ffs    rw 1 1
 /dev/xbd0a /grub    ext2   rw 2 2  /dev/xbd0a /grub    ext2fs rw 2 2
 kernfs     /kern    kernfs rw  kernfs     /kern    kernfs rw
 ptyfs      /dev/pts ptyfs  rw  ptyfs      /dev/pts ptyfs  rw
 procfs     /proc    procfs rw  procfs     /proc    procfs rw
Line 365  Copyright (c) 1982, 1986, 1989, 1991, 19 Line 388  Copyright (c) 1982, 1986, 1989, 1991, 19
     The Regents of the University of California.  All rights reserved.      The Regents of the University of California.  All rights reserved.
   
 NetBSD 5.99.45 (XEN3_DOMU) #9: Wed Feb 16 21:14:49 CET 2011  NetBSD 5.99.45 (XEN3_DOMU) #9: Wed Feb 16 21:14:49 CET 2011
         jym@paris:/home/jym/cvs/obj/sys/arch/amd64/compile/XEN3_DOMU  
 [...]  [...]
   NetBSD/amd64 (ip-10-112-58-223.ec2.internal) (console)
   
   login: 
 """]]  """]]
   
 ## Connect to your NetBSD instance  ## Connect to your NetBSD instance
   
   Connection is similar to the one you used for the Amazon Linux instance, except that you login as "root" instead of "ec2-user":
   
   [[!template id=programlisting text="""
   $ ec2-describe-instances i-953d72f9
   RESERVATION     r-da8021b7      983624114127    default
   INSTANCE        i-953d72f9      ami-74d0231d    <strong>ec2-50-16-3-55.compute-1.amazonaws.com</strong>  ip-10-112-58-223.ec2.internal   running &lt;your_ssh_key_pair_name&gt;  0               t1.micro        2011-02-19T04:01:03+0000        us-east-1c      aki-427d952b                    monitoring-disabled     50.16.3.55      10.112.58.223                   ebs                                     paravirtual     xen     
   BLOCKDEVICE     /dev/sda1       vol-ec3c4a84    2011-02-19T04:01:31.000Z        
   BLOCKDEVICE     /dev/sda2       vol-ee3c4a86    2011-02-19T04:01:31.000Z        
   $ ssh -i "$EC2_SSH_KEY" root@ec2-50-16-3-55.compute-1.amazonaws.com
   The authenticity of host 'ec2-50-16-3-55.compute-1.amazonaws.com (50.16.3.55)' can't be established.
   [...]
   Thank you for helping us test and improve NetBSD.
   
   Terminal type is xterm.
   We recommend that you create a non-root account and use su(1) for root access.
   ip-10-112-58-223# uname -a
   NetBSD ip-10-112-58-223.ec2.internal 5.99.45 NetBSD 5.99.45 (XEN3_DOMU) #9: Wed Feb 16 21:14:49 CET 2011  jym@paris:/home/jym/cvs/obj/sys/arch/amd64/compile/XEN3_DOMU amd64
   ip-10-112-58-223# 
   """]]
   
   Done!
   
 ## And now?  ## And now?
   
   Well, you got a NetBSD instance that is in almost every part similar to what a NetBSD domU can be. You can use this domU to host Internet services, run a database, extend your build farm, or use it as a sandbox. The AMI being built around snapshots, you can play and break your instance in every way you want; just restart one anew if you need to. Don't forget that Amazon will charge acccordingly :)
   
   Remember, you can query information regarding your AWS account through [[!template id=pkg category=misc name=ec2-api-tools]] package. It is quite easy to use these tools for scripting; for a more elaborate, graphical interface, use the [Amazon Management Console](https://console.aws.amazon.com/ec2/home).

Removed from v.1.21  
changed lines
  Added in v.1.23


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