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• T38modem manuals?

  - by Brian Postow

  Are there any T38modem users here? I'm trying to figure out how to call T38modem with SIP. I've got everything except the --route option for receiving. I know my own phone number, but I am not sure how to set it up. Currently, I have: --route "modem:0.*"="sip:<dn>@64.136.174.30" --route "modem:1.*=sip:[email protected]" I've also tried: --route "modem:*.*"="sip:<dn>@64.136.174.30" --route"sip:*@74.94.184.154"="modem:<dn>@127.0.0.1" what amI doing wrong? And where (other than t38modem --help) can I find some documentation on how to use it? thanks.

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• Fail rate of EBS snapshots and AMIs?

  - by user784637

  According to Amazon the fail rate of EBS volumes is: As an example, volumes that operate with 20 GB or less of modified data since their most recent Amazon EBS snapshot can expect an annual failure rate (AFR) of between 0.1% – 0.5%, where failure refers to a complete loss of the volume http://aws.amazon.com/ebs/ However, I was curious to know the fail rate of EBS snapshots and private AMIs that a system admin would take. Since the EBS snapshots and AMIs are stored in Amazon s3, is it safe to assume that the likelihood you cannot rollback to a previous snapshot or AMI the same likelihood that a file gets lost in s3? Amazon S3’s standard storage is: ... Designed to provide 99.999999999% durability and 99.99% availability of objects over a given year. http://aws.amazon.com/s3/

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• AWS EC2 can't execute user-data script

  - by Bloodnut

  I'm pretty new to AWS and EC2 but I want to run instances with a user script after it's booted from another instance. I have installed ec2 tools and ran the command as it's explained in various examples like here http://www.turnkeylinux.org/blog/ec2-userdata and Eric Hammond's tutorials. however when I actually use the command: "ec2-run-instances --key my-key --user-data-file myscript my-ami" it only runs the new instance but doesn't execute the script myscript contains: #!/bin/bash echo "hello" ~/output.txt I'm running ubuntu server 12.04 AMIs. the target AMIs are duplicates of the initiating instance. if I run curl http:// 169.254.169.254/latest/user-data the imported script is there.

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• Amazon ec2 folder missing

  - by CQM

  To set permissions on the settings file On your Amazon EC2 instance, at a command prompt, use the following command to set permissions: sudo chmod 666 /var/www/html/sites/default/settings.php except I don't have a www folder in my instance [ec2-user@ip-10-242-118-215 ~]$ cd / [ec2-user@ip-10-242-118-215 /]$ ls bin cgroup etc lib local media opt root selinux sys usr boot dev home lib64 lost+found mnt proc sbin srv tmp var [ec2-user@ip-10-242-118-215 /]$ cd var [ec2-user@ip-10-242-118-215 var]$ ls account db games local log nis preserve run tmp cache empty lib lock mail opt racoon spool yp Please advise, did I forget to install something that the amazon instructions assumed I knew about? Running 64bit Amazon linux ami march 2012 I feel like the webserver is missing?

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• Amazon EC2 Creating Tunnel with OpenVPN

  - by nocode

  I have followed these instructions: http://aws.amazon.com/articles/0639686206802544 I can ping the VPN endpoints and I have the corresponding VPC CIDR pointing to the EC2 instance in the route table. Here is my config: port 1194 proto udp dev tun # Remote peer and network remote Elastic_IP route 10.0.0.0/16 # Configure local and remote VPN endpoints ifconfig 169.254.255.1 169.254.255.2 # The pre-shared static key secret /etc/openvpn/ovpn.key keepalive 10 120 persist-key persist-tun log /var/log/openvpn.log verb 3 When I look at my logs, I get this error: RESOLVE: Cannot resolve host address: 10.0.0.0/16: Name or service not known OpenVPN ROUTE: failed to parse/resolve route for host/network: 10.0.0.0/16 in VPC1, the CIDR is 172.31.0.0/16 which is targeting the EC2 instance also running OpenVPN. I'm getting the same error from the Instance in VPC2 with the corresponding CIDR. Just for testing, i stopped the IPTABLES service I am running the Amazon linux AMI image (x64) as specified in the article I linked.

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• Deploying site on Amazon Beantalk and IIS settings

  - by Idan Shechter

  I am interested in working with Amazon Elastic Beantalk to deploy my new site. A few things that I need to know and can't get an answer to: 1) How can I maintain IIS settings of all deployed and future deployed machines? 2) If I can maintain, what happens if I change the settings on one server, will it automatically set it on other servers? 3) How can I backup the data. In other servers I usually make an AMI and deploy to a new server in case of a problem?

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• Is there a serious issue with setting the SUID bit on tcpdump?

  - by Dean

  I'm running tcpdump on a remote machine, and piping the output to Wireshark on my local machine over SSH. In order to do this, I had to set the SUID bit on tcpdump. For background, the remote machine is an Amazon EC2 running "Amazon Linux AMI 2012.09". On this image, there is no root password, and it is not possible to log in as root. You can't use sudo without a TTY, and therefore you have to set the SUID. What are the practical risks of setting this bit on tcpdump? Is there any need to be paranoid? Should I unset it whenever I'm not capturing?

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• Running make for Nginx throws a “multiple target patterns” error

  - by Justin Meltzer

  When I run make inside my installed nginx directory I get the output: make -f objs/Makefile make[1]: Entering directory `/home/ec2-user/nginx/nginx-1.2.4' objs/Makefile:110: *** multiple target patterns. Stop. make[1]: Leaving directory `/home/ec2-user/nginx/nginx-1.2.4' make: * [build] Error 2 I am on an Amazon Linux AMI. The steps I took from the beginning was wget /path/to/nginx/tarball tar xvf nginx-1.2.4.tar.gz cd nginx-1.2.4 ./configure --prefix=/nginx --a-bunch-of-other-options Then I ran make. Also I installed make by running sudo yum install make Please let me know if there's any other information I should be providing.

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• AWS Autoscaling issue with existing nodes in ELB

  - by Ram Prasad

  I already have a ELB setup called MyLoadBalancer. I already have 2 nodes running on it with health checks (that checks a URL on the node to see if they are up) Created an autoscaling group (min 2, Max 10) Associated launchconfig mylaunchconfig that provisions a node using an AMI Created a trigger, that checks for avg min connections of 100 and Max of 500 (checks the load balancer and it is support to increase the node count by 1, if avg connections are 500 and decrease by one if less than 100) as-create-or-update-trigger MyTrigger --auto-scaling-group MyAutoScalingGroup --namespace "AWS/ELB" --measure RequestCount --statistic Average --dimensions "LoadBalancerName=MyLoadBalancer" --period 60 --lower-threshold 500 --upper-threshold 800 --lower-breach-increment=-1 --upper-breach-increment=1 --breach-duration 600 Now the issue is, as soon as I put in the trigger, it start 2 nodes .... but there are already two nodes in the LB. So, why is it provisioning 2 more nodes, when the nodes are there ? is it because it is not recognizing the existing 2 nodes ? then how do I add the existing nodes to the AutoScaling group ?

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• Options for EC2 ec2-create-snapshot and family

  - by shabda

  I am trying to use the various tools provided by ec2-ami-tools Eg, ec2-create-snapshot -h .... -K, --private-key KEY Specify KEY as the private key to use. Defaults to the value of the EC2_PRIVATE_KEY environment variable (if set). Overrides the default. -C, --cert CERT Specify CERT as the X509 certificate to use. Defaults to the value of the EC2_CERT environment variable (if set). Overrides the default. -K and -C are two required values, and I cant understand what values are these expecting? If I create a Keypair from Elasticfox, I get only one file to download and a fingerprint. So which of this need to get where?

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• Understanding Asterisk Server features

  - by Arham Ali Qureshi

  I need to ask few question about Asterisk 1) Does ACL mean by Access Control list here ?If yes than how could i use it? >ip show user 6001 * Name : 6001 Secret : <Set> MD5Secret : <Not set> Context : DLPN_Admin Language : AMA flags : Unknown Transfer mode: open MaxCallBR : 384 kbps CallingPres : Presentation Allowed, Not Screened Call limit : 2147483647 Callgroup : 1 Pickupgroup : 1 Callerid : "test" <6001> ACL : No Sess-Timers : Accept Sess-Refresh : uas Sess-Expires : 1800 secs Sess-Min-SE : 90 secs RTP Engine : asterisk Codec Order : (ulaw:20,gsm:20) Auto-Framing: No 2) What is mean by "Require Call Token" in Asterisk Digium GIU on Create new User Panel 3) Is There any command from where i can get users VOICE MAIL password ? 4) What AMI or CLI command set call recording on or off for user ? and if i want that file to be stored on client computer not on server memory what could i do ?

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• Making a Ligthing Flash Magento store with Nginx on AWS Elastic Beanstalk with Minimum Resource Utilization

  - by Junaid

  I'm going to install Magento on AWS Elastic Beanstalk t1.micro (free tier), on Windows or Linux + Nginx + Php-fpm + eAccelerator, CDN (cloudfront), MemcacheD. I will ask my developer to make my website as fast as it can be with as much as possible, minimum AWS utilization. My webstore will have <1000 SKUs and I'm not expecting the traffic without going into thorough SEO/PPC. Now I have three questions: Do I really need Nginx microcaching along with eaccelerator? Do I need AWS Elastic Load Balancer with t1.micro tier for the sake of scalability (as I have heard that magento is resource hungry application, may fully utilize t1.micro AMI) or can I replace AWS ELB with Nginx load balancer? In AWS Elastic Beanstalk?

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• Database modularity with EBS volumes

  - by Eclyps19

  I would like to add modularity to my websites on EC2 instances by encapsulating the site files and the mysql files in their own EBS volumes. The end result that I'm going for is the ability to quickly mount a volume or two to different servers running the same AMI (for testing/development/emergency maintenance, etc), as well as maintain separate snapshots of each. I'm able to do this fairly easily with a single database by symlinking my mounted database EBS to the appropriate places (/var/lib/mysql, /etc/my.cnf, /var/log/mysqld.log), but I'm not sure if it would even be possible be possible to have multiple databases on different EBS volumes running concurrently. Example: /website1/www.website.com /database1/ /website2/www.otherwebsite.com /database2/ Could anybody shed some light on this for me? Is it possible? Is it a bad idea? Thanks.

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• EC2 persistence of machine

  - by Seagull

  I notice that EBS-backed AMIs are much like a VMWare instances -- I can stop them and also persist them to disk, and all this is done relatively quickly. However, I believe that S3 backed machines are different. They cannot be 'stopped', but rather can only be shut-down, written to S3 disk and started up again; with at least a 15 min delay in doing so. Why the difference? How do AMI providers decide whether to use EBS or S3? If I need to stop/persist/restart machines relatively frequently, then I am implicitly limited to just the EBS-backed machines?

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• Computer cannot detect hard disk

  - by Nrew

  Details: BIOS: AMI Bios, set primary master to Auto OS: Windows XP Sp2 Memory: 384 Mb Processor: Pentium 3 yeah this one is really very old. And some of the capacitors in the motherboard are already bulging. It detected the hdd yesterday when were trying to fix it and install xp. But today it cannot boot and said: Boot failure. What can you suggest that I would do to revive this old machine. What would be the problem, is it the hdd, the ide cable or the motherboard.

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• Amazon EC2, fastest way to get a node into an existing cluster

  - by imaginative

  I'm new to Amazon AWS. A lot of the time I hear about people folks spawning instances and almost instantly putting them behind a load balancer and into an existing cluster. In the traditional world of managed machines, this would include provisioning hardware, installing an OS, configuring the network on the machine and once the network is available, use a tool of your choice such as CFengine, Puppet or Chef to bootstrap the machine based on its class. It seems like there are "shortcuts" that are able to get a server of a particular class up and running in Amazon EC2. If I have a particular stack running on my server, such as erlang, tomcat6 etc.. what's the fastest way to get these up and running and hooked into Amazon's load balancer? From network, to software stack to kernel tuning? Is it a combination of creating an AMI then running a tool like Puppet against the new instance? Any idea

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• How do I set up an sftp user to login with a password to an EC2 ubuntu server ?

  - by Doron

  Hello, I have an Ubuntu Server running on an EC2 instance. To login to that server I use a certificate file without any password. I've installed and configured vsftpd and created a user (let's call him "testuser") for which I've set a /bin/false ssh terminal so it will only be able to connect via sftp and upload/access files on his home directory. However - when I try to connect to the server from my computer, running sftp testuser@my-ec2-server I get Permission denied (publickey). Connection closed messages so I can't log in. How can I remove the certificate requirement for this user only (meaning, the "ubuntu" user will still have to use the certificate file to login via ssh), so normal sftp clients will be able to connect using a username and a password ? Thank you. PS Using Ubuntu Server 10.10 official AMI from canonical, 64bit on a micro instance.

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• vpn/Openvpn as a cloud service

  - by 8pipe

  I am working on creating a small cloud (any number of EC2 instances that can be deployed based on load) implementing a VPN as a service for the company I'm working for. This is basically a project gathering together various vpn resources under one aegis as a cloud based service. As a user of openvpn, I'm somewhat familiar with being able to connect, but I'm looking for resources to start this project. Essentially I need to be able to: run a certificate authority and manage keys to distribute to coworkers build an ami that handles openvpn as a service balance the load if necessary among machines instances as needed Any suggestions for tutorials, things to avoid, roadblocks I might not be seeing from a novice perspective, etc. or just help in visualizing this is appreciated.

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• Options for PCI-DSS on AWS - file integrity monitoring and intrusion detection

  - by Brill Pappin

  I need to deploy some file integrity monitoring and intrusion detections software on AWS instances. I really wanted to use OSSEC, however it does not work well in an environment where servers can auto deploy and shut down based on load, because it requires server managed keys to be generated. Including the agent in the AMI will not allow monitoring as soon as it comes up because of that. There are many options out there, and several are listed in other posts on this site, however none that I've seen so far deal with the unique problems inherent in AWS or cloud based deployments in general. Can anyone point me at some products, preferably open source, that we might use to cover those portions of PCI DSS that require this software? Has anyone else achieved this on AWS?

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• Easy way to update apache on a server cluster with shared NFS conf?

  - by Simon

  we have a server setup where a server cluster connected with a db/files/conf server shared by nfs serve our sites, behind an Elastic Load Balancer at Amazon EC2. The setup works correctly, but keeping it up to date is becoming like hell, because the apache/php conf that webservers use is shared through NFS. So, if we try to run an apt-get upgrade on a server on the cluster, it will abort it due to the webserver is not able to write back the configuration to the nfs server. Every time we want to update the machines, or install a package like php-curl, we need to create a new ami, so the changes will reflect on the new launched amis. Could it be another way of doing the things simpler? Thanks in advance!

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• I setup vsftpd on ubuntu server on my ec2 instance, how to connect using SSH?

  - by Blankman

  I connect to my ec2 instance using ssh so I don't have to login each time. I just installed vsftpd on the ubuntu server, but when I connect it obviously asks for my username and password. Since I connect using the ubuntu user that my AMI comes with, I don't even know the root password. Is there a way I can login via ftp using SSH? Or do I just create a user on the system for ftp purposes? I've locked ftp to my IP address, and I will shutdown the ftp service once I'm done as I dont need it running 99.99999% of the time.

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• Intermittent apt-get 'no installation candidate' error on fabric deploy

  - by jberryman

  I'm experiencing a strange issue with a fabric script I'm using to bootstrap a server on EC2. I launch a stock Ubuntu 12.04 AMI, wait for it to start, then proceed with: with settings(host_string="ubuntu@%s" % i.dns_name, connection_attempts=30): sudo('apt-get -qy update') sudo('apt-get -qy install --no-install-recommends mdadm') # don't install postfix #etc... The apt-get update appears to run fine and gives no errors, however (2/3 of the time or so) installing mdadm throws a "no installation candidate" error. When I ssh into the server and run apt-get install mdadm I get the same error. Running apt-get update by hand, then the package installs fine. Any ideas on what might be happening, or ideas for debugging?

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• Rebooting an EC2 Instance

  - by ABrown

  I'm working on a project involving EC2 and I'm having a difficult time wrapping my head around this concept. With EC2 instances, will non-EBS backed volumes (standard EC2) survive a reboot of the OS? For example, I have an Ubuntu instance. If I type "/sbin/shutdown -r now", will I lose all data on the drive not in the AMI? I understand that if I terminate the instance via the tools or the control panel, I lose everything, but I can't find a concrete answer to the restart issue. An extra gold star goes to anyone who can link to documentation clearly explaining this. ;) Thanks for your time!

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• Creating user accounts in Amazon EC2

  - by Tvanover

  I am putting together a test environment using Amazon's EC2 for me and some friends to collaborate on a project. I am not a server guy but I do know my way around a bash prompt and have done some work on ubuntu before. I am using Amazon Linux AMI i386 EBS and have gotten apache and php running. Now I need to create the user accounts my friends and I will use to upload files (sftp) and work on the project (ssh). How should I go about this? Should I just use adduser and configure it like normal? Or should I use the AWS IAM groups?

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• Auto-scaling EC2 Servers and Updating Code

  - by jstats

  We've come to the point where we need to set up autoscaling for our web server and I'm unsure how to go about the process of scaling servers and updating the the existing code without remaking a new AMI and changing the autoscale config to use it. I've read a bit about people bundling the new code and uploading it to s3 and having new servers grab the bundle on boot up but that doesn't seem all that pleasant either. Currently the web app's files live in a git repo, and when we update the code, we push it to github, ssh into the web app and run a hook to bring down the latest code. So I was thinking that another option could be to just run that hook on an hourly or daily cron task. Unfortunately that doesn't cover everything type of update (for example new blog posts' images and such which aren't included in the git repo) but it's something. Could anyone provide some advice on what a common solution is or anything as to why my proposed solution is a bad idea? Thanks all

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