Install Elastix on Amazon EC2

原創:OSSLab Alang

Amazon EC2 http://aws.amazon.com/ec2/
為一虛擬VM 租用服務.租用之後
Amazon現有365天99.95%可用性的服務層級協定(SLA)。

穩定度非常高.價格也有彈性
理論上可以做 IP PBX 某種備援狀況.

以下面方式安裝並上線使用


SRPM - http://repo.elastix.org/elastix/1.6/base/SRPMS/
Part 2: Asterisk in a Cloud - http://voxilla.com/2009/02/13/asteri...mazon-ec2-1178
gcc-4.0.2 - http://ftp.gnu.org/gnu/gcc/gcc-4.0.2/ 

Compile and install dahdi_dummy modul

// Install gcc-4.0.2

cd /usr/src
wget http://ftp.gnu.org/gnu/gcc/gcc-4.0.2/gcc-4.0.2.tar.bz2
tar -xjf gcc-4.0.2.tar.bz2
cd gcc-4.0.2
mkdir tmp
cd tmp
../configure --program-suffix=-4.0.2
make
make install

// Install kernel source (xen-3.1.0-src-ec2-v1.0)

yum install ncurses-devel
cd /usr/src
wget http://ec2-downloads.s3.amazonaws.com/xen-3.1.0-src-ec2-v1.0.tgz
tar xzvf xen-3.1.0-src-ec2-v1.0.tgz
cd xen-3.1.0-src-ec2-v1.0
make linux-2.6-xenU-config

rm -f /lib/modules/2.6.18-xenU-ec2-v1.0/build
ln -s /usr/src/xen-3.1.0-src-ec2-v1.0/build-linux-2.6.18-xenU_x86_32 \
      /lib/modules/2.6.18-xenU-ec2-v1.0/build
rm -f /lib/modules/2.6.18-xenU-ec2-v1.0/source
ln -s /usr/src/xen-3.1.0-src-ec2-v1.0/linux-2.6.18-xen \
      /lib/modules/2.6.18-xenU-ec2-v1.0/source

cd /usr/src/xen-3.1.0-src-ec2-v1.0
mv linux-2.6.18-xen/Makefile linux-2.6.18-xen/Makefile.orig
sed -e 's_^\(HOSTCC.*=\).*_\1 /usr/local/bin/gcc-4.0.2_' \
    -e 's_^\(CC.*=\).*_\1 /usr/local/bin/gcc-4.0.2_' \
    <linux-2.6.18-xen/Makefile.orig >linux-2.6.18-xen/Makefile

make linux-2.6-xenU-build
make linux-2.6-xenU-install

// Install dahdi

cd /usr/src/digium
wget http://downloads.digium.com/pub/telephony/dahdi-linux/dahdi-linux-current.tar.gz
tar xzvf dahdi-linux-current.tar.gz
cd dahdi-linux*
make
make install

// 設定只啟動 dahdi_dummy 模組

mv /etc/dahdi/modules /etc/dahdi/modules.orig
echo '# only launch dahdi_dummy' > /etc/dahdi/modules

// 測試 dahdi_dummy 運作

#> service dahdi restart
#> dahdi_test -v

Opened pseudo dahdi interface, measuring accuracy...

8192 samples in 8198.648 system clock sample intervals (100.081%)
8192 samples in 8205.841 system clock sample intervals (100.169%)
8192 samples in 8182.408 system clock sample intervals (99.883%)
8192 samples in 8190.424 system clock sample intervals (99.981%)
8192 samples in 8190.352 system clock sample intervals (99.980%)

Notes: 數值應該要接近 100%

// 在 EC2 的 Linux 系統環境取得 Public IP

curl http://169.254.169.254/latest/meta-data/public-ipv4