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  • Amazon EC2 Reserved Instances: "Heavy Utilization" clarification

    - by gravyface
    Should be another easy one here, but I need clarification on what they define as "heavy utilization" for Reserved Instance types. From their Website: Heavy Utilization RIs – Heavy Utilization RIs offer the most absolute savings of any Reserved Instance type. They’re most appropriate for steady-state workloads where you’re willing to commit to always running these instances in exchange for our lowest hourly usage fee. With this RI, you pay a little higher upfront payment than Medium Utilization RIs, a significantly lower hourly usage fee, and you’re charged that lower hourly rate for every hour in the Reserved Instance term you purchase. Using Heavy Utilization RIs, you can save up to 41% for a 1-year term and 58% for a 3-year term vs. running On-Demand Instances. If you’re trying to find a break-even utilization, you’re economically advantaged using Heavy Utilization RIs (vs. On-Demand Instances) if you plan to use your instance more than 43% of a 1-year term or 79% of a 3-year term. I'm assuming that, if I'm planning on running a 24/7 Web Server, then regardless of how many resources I consume (bandwidth, cpu cycles, memory), I would want to go with a Heavy Utilization Reserved Instance? This one Web Server in particular will likely barely budge the cpu, but it needs to be up and running 24/7. Not 100% on what they're defining as "heavy".

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  • Restoring WordPress EC2 instance from snapshot results in 403 Forbidden error

    - by Eric Matthew Turano
    This problem has been perplexing me for weeks now. Here's how the issue goes: Launch Amazon Linux 64-bit instance, successfully install WordPress, and site is active w/ no issues Create snapshot of the instance's root volume Shut down instance Create volume from snapshot, attach to instance, and reboot instance Associate Elastic IP with instance Once that's done and I try logging onto the site, I am redirected to myurl.com/wp-admin/install.php and greeted with this message: Forbidden: You don't have permission to access /wp-admin/install.php on this server. Apache/2.2.25 (Amazon) Server at www.myurl.com Port 80 Port 80 is open on the inbound security group settings, so that's not the issue. Keep in mind all I am doing is merely creating a new volume and attaching it to the same instance, and this issue comes up. What am I doing wrong, and how can I create a complete backup of my instance without this error occuring?

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  • DNS with Amazon EC2 Elastic Load Balancer

    - by user68173
    I'm told that I can't make the root of a domain (example.com) a CNAME - I have to specify an IP. Given that you can't use an IP address to point at your Elastic Load Balancer, what's the best thing to do? Currently I do this: example.com - A record to elastic IP of first server- redirects to www.example.com www.example.com CNAME to hostname of load balancer If the first server is out of action, the redirect will fail. Is there a better way to approach this?

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  • Lan, vpn on Amazon EC2, how to?

    The problem is as follows: I have 2 windows2003 server instances running on the cloud. 1) How can I create a local area network from these 2 instances? 2) Assuming that I want to create a VPN network from these 2 instances, how do I do that? (I'm not very good in networking, therefor the above problem description might be incomplete or not very clear.) A detailed answer or clarification would be praised and appreciated! What I tried: 1) Setting up OpenVPN, but I got lost in the process. 2) Creating a VPN from windows2003 server in the following manner: on instance a): set up a dhcp server; set up an "accept income vpn" connection; with the followin tcp ip settings: obtain an ip from the dhcp server; on instance b): created a new vpn connection, tried to connect to intance A, using the instance A static IP but error 806 was thrown, something relate to a GRE protocol.

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  • Zabbix on amazon ec2. Installation

    - by 330xi
    I've read about mikoomi. And I it is not suitable for me. I do not have access to secret key. I want to install and use zabbix server and agent itself on instances. Is it good idea? And here is the problem: during: yum install zabbix-server-pgsql zabbix-web-pgsql zabbix-agent I got: Error: httpd24-tools conflicts with httpd-tools Error: httpd24 conflicts with httpd How to complete installation successfully?

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  • EC2 instance suddenly refusing SSH connections and won't respond to ping

    - by Chris
    My instance was running fine and this morning I was able to access a Ruby on Rails app hosted on it. An hour later I suddenly wasn't able to access my site, my SSH connection attempts were refused and the server wasn't even responding to ping. I didn't change anything on my system during that hour and reboots aren't fixing it. I've never had any problems connecting or pinging the system before. Can someone please help? This is on my production system! OS: CentOS 5 AMI ID: ami-10b55379 Type: m1.small [] ~% ssh -v *****@meeteor.com OpenSSH_5.2p1, OpenSSL 0.9.8l 5 Nov 2009 debug1: Reading configuration data /etc/ssh_config debug1: Connecting to meeteor.com [184.73.235.191] port 22. debug1: connect to address 184.73.235.191 port 22: Connection refused ssh: connect to host meeteor.com port 22: Connection refused [] ~% ping meeteor.com PING meeteor.com (184.73.235.191): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 ^C --- meeteor.com ping statistics --- 4 packets transmitted, 0 packets received, 100.0% packet loss [] ~% ========= System Log ========= Restarting system. Linux version 2.6.16-xenU ([email protected]) (gcc version 4.0.1 20050727 (Red Hat 4.0.1-5)) #1 SMP Mon May 28 03:41:49 SAST 2007 BIOS-provided physical RAM map: Xen: 0000000000000000 - 000000006a400000 (usable) 980MB HIGHMEM available. 727MB LOWMEM available. NX (Execute Disable) protection: active IRQ lockup detection disabled Built 1 zonelists Kernel command line: root=/dev/sda1 ro 4 Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Initializing CPU#0 PID hash table entries: 4096 (order: 12, 65536 bytes) Xen reported: 2599.998 MHz processor. Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Software IO TLB disabled vmalloc area: ee000000-f53fe000, maxmem 2d7fe000 Memory: 1718700k/1748992k available (1958k kernel code, 20948k reserved, 620k data, 144k init, 1003528k highmem) Checking if this processor honours the WP bit even in supervisor mode... Ok. Calibrating delay using timer specific routine.. 5202.30 BogoMIPS (lpj=26011526) Mount-cache hash table entries: 512 CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) CPU: L2 Cache: 1024K (64 bytes/line) Checking 'hlt' instruction... OK. Brought up 1 CPUs migration_cost=0 Grant table initialized NET: Registered protocol family 16 Brought up 1 CPUs xen_mem: Initialising balloon driver. highmem bounce pool size: 64 pages VFS: Disk quotas dquot_6.5.1 Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) Initializing Cryptographic API io scheduler noop registered io scheduler anticipatory registered (default) io scheduler deadline registered io scheduler cfq registered i8042.c: No controller found. RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize Xen virtual console successfully installed as tty1 Event-channel device installed. netfront: Initialising virtual ethernet driver. mice: PS/2 mouse device common for all mice md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27 md: bitmap version 4.39 NET: Registered protocol family 2 Registering block device major 8 IP route cache hash table entries: 65536 (order: 6, 262144 bytes) TCP established hash table entries: 262144 (order: 9, 2097152 bytes) TCP bind hash table entries: 65536 (order: 7, 524288 bytes) TCP: Hash tables configured (established 262144 bind 65536) TCP reno registered TCP bic registered NET: Registered protocol family 1 NET: Registered protocol family 17 NET: Registered protocol family 15 Using IPI No-Shortcut mode md: Autodetecting RAID arrays. md: autorun ... md: ... autorun DONE. kjournald starting. Commit interval 5 seconds EXT3-fs: mounted filesystem with ordered data mode. VFS: Mounted root (ext3 filesystem) readonly. Freeing unused kernel memory: 144k freed *************************************************************** *************************************************************** ** WARNING: Currently emulating unsupported memory accesses ** ** in /lib/tls glibc libraries. The emulation is ** ** slow. To ensure full performance you should ** ** install a 'xen-friendly' (nosegneg) version of ** ** the library, or disable tls support by executing ** ** the following as root: ** ** mv /lib/tls /lib/tls.disabled ** ** Offending process: init (pid=1) ** *************************************************************** *************************************************************** Pausing... 5Pausing... 4Pausing... 3Pausing... 2Pausing... 1Continuing... INIT: version 2.86 booting Welcome to CentOS release 5.4 (Final) Press 'I' to enter interactive startup. Setting clock : Fri Oct 1 14:35:26 EDT 2010 [ OK ] Starting udev: [ OK ] Setting hostname localhost.localdomain: [ OK ] No devices found Setting up Logical Volume Management: [ OK ] Checking filesystems Checking all file systems. [/sbin/fsck.ext3 (1) -- /] fsck.ext3 -a /dev/sda1 /dev/sda1: clean, 275424/1310720 files, 1161123/2621440 blocks [ OK ] Remounting root filesystem in read-write mode: [ OK ] Mounting local filesystems: [ OK ] Enabling local filesystem quotas: [ OK ] Enabling /etc/fstab swaps: [ OK ] INIT: Entering runlevel: 4 Entering non-interactive startup Starting background readahead: [ OK ] Applying ip6tables firewall rules: modprobe: FATAL: Module ip6_tables not found. ip6tables-restore v1.3.5: ip6tables-restore: unable to initializetable 'filter' Error occurred at line: 3 Try `ip6tables-restore -h' or 'ip6tables-restore --help' for more information. [FAILED] Applying iptables firewall rules: [ OK ] Loading additional iptables modules: ip_conntrack_netbios_ns [ OK ] Bringing up loopback interface: [ OK ] Bringing up interface eth0: Determining IP information for eth0... done. [ OK ] Starting auditd: [FAILED] Starting irqbalance: [ OK ] Starting portmap: [ OK ] FATAL: Module lockd not found. Starting NFS statd: [ OK ] Starting RPC idmapd: FATAL: Module sunrpc not found. FATAL: Error running install command for sunrpc Error: RPC MTAB does not exist. Starting system message bus: [ OK ] Starting Bluetooth services:[ OK ] [ OK ] Can't open RFCOMM control socket: Address family not supported by protocol Mounting other filesystems: [ OK ] Starting PC/SC smart card daemon (pcscd): [ OK ] Starting hidd: Can't open HIDP control socket: Address family not supported by protocol [FAILED] Starting autofs: Starting automount: automount: test mount forbidden or incorrect kernel protocol version, kernel protocol version 5.00 or above required. [FAILED] [FAILED] Starting sshd: [ OK ] Starting cups: [ OK ] Starting sendmail: [ OK ] Starting sm-client: [ OK ] Starting console mouse services: no console device found[FAILED] Starting crond: [ OK ] Starting xfs: [ OK ] Starting anacron: [ OK ] Starting atd: [ OK ] % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 390 100 390 0 0 58130 0 --:--:-- --:--:-- --:--:-- 58130 100 390 100 390 0 0 56984 0 --:--:-- --:--:-- --:--:-- 0 Starting yum-updatesd: [ OK ] Starting Avahi daemon... [ OK ] Starting HAL daemon: [ OK ] Starting OSSEC: [ OK ] Starting smartd: [ OK ] c CentOS release 5.4 (Final) Kernel 2.6.16-xenU on an i686 domU-12-31-39-00-C4-97 login: INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes

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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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  • Amazon ec2 reserve instance

    - by lydonchandra
    Hi, We received the education credit (valid for 1 year) from Amazon to use, and just wondering if we can buy reserved instance (3years) using that credit? Is there any way to reserve how much bandwidth we can use too ? Thanks

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  • Amazon EC2 root defaults on EBS

    - by CodeShining
    I'm trying to understand why when launching a new instance Amazon defaults to EBS (8gb root) instead of instance storage. Why do they sell instance storage then if it's not used also to boot the base system? Is it safe to uncheck delete on termination, make it bigger (~50GiB) and keep all files on that EBS instead of creating a new one to make sure data will persist and it will also be usable by another instance?

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  • Processing-time billing in Amazon EC2

    - by Rafael Almeida
    Hi all! I think my question is fairly basic, but I would like a clarification: in the Pricing part of AWS we can see that Amazon charges people around .10 by the 'instance computing hour'. I've seen in a blog post somewhere (can't remember where exactly, and even if I did I think it was in Portuguese anyway) that this way your minimum monthly payment would be $72 (= .10 $s/hour x 24 hours x 30 days). Is this correct? (I don't think it is!) In my understanding is that this 'virtual computing time' is only used when your machine is actually doing something (serving pages, serving the admin via ssh, whatever), so real billable usage would be less than 720 hours/month in most webserver scenarios. Is my view correct? If it is, then it leads me to another question: is it economically interesting to buy access to one of these instances for testing? I mean, would I have the 'freedom' to 'forget' about it for a month and receive a very-close-to-zero (as in, a few cents) bill? Do you do it/know of anybody who does? Any thoughts on the matter (as in, "yes, it's a good idea", or "yes, but there's this 'gotcha': ...", or "no, nobody does it because of...")? PS: sorry for the loong question text. I highlighted the main questions for easy view. Also, I'm not sure if this question is actually more than one and if it's desirable for the community, so, sorry if it is too! Thanks in advance!

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  • EC2 EBS AMI Instance stopping/restarting doesn't start services

    - by tgm
    I've recently been moving our instances to EBS instances (CentOS) and still have a bit of confusion on what's happening when I "stop" and instance. I have some of my services with runlevels 345 on but when I start a stopped instance the services don't start. What's actually happening when I issue a stop command to the instance, and how do I get my services to start automatically when I start the instance up again?

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  • SSH broken after homedir permissions and hostname change on EC2-hosted Ubuntu

    - by dimadima
    I changed my instance's hostname using the hostname utility and then set it in /etc/hostname so that the new name survives reboot. My main motivation was for differentiating between instances at the prompt using the \h format in PS1. EDIT I also changed permissions on my home directory. I made my home directory group writeable. Now I can no longer SSH into the machine. The short of it is the error Permission denied (publickey). Running ssh -v, the more verbose output is: debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering RSA public key: /Users/dmitry/.ssh/id_rsa debug1: Authentications that can continue: publickey debug1: Trying private key: /Users/dmitry/.ssh/ec2key.pem debug1: read PEM private key done: type RSA debug1: Authentications that can continue: publickey debug1: No more authentication methods to try. Permission denied (publickey). Should I have done something after changing the hostname? Now I can't get into the instance! :(

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  • Amazon ec2 reserve instance

    - by lydonchandra
    Hi, We received the education credit (valid for 1 year) from Amazon to use, and just wondering if we can buy reserved instance (3years) using that credit? Is there any way to reserve how much bandwidth we can use too ? Thanks

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  • how to solve out of memory error in java in amazon ec2 server

    - by sathishkumar
    can anyone explain about this error message? we are using IBM jre to run java application Its occupying more space on the server. JVMDUMP006I Processing dump event "systhrow", detail "java/lang/OutOfMemoryError" - please wait. JVMDUMP006I Processing dump event "systhrow", detail "java/lang/OutOfMemoryError" - please wait. JVMDUMP032I JVM requested Heap dump using '/home/sathish/jetty6/heapdump.20110417.114115.18926.0001.phd' in response to an event JVMDUMP010I Heap dump written to /home/sathish/jetty6/heapdump.20110417.114115.18926.0001.phd JVMDUMP032I JVM requested Heap dump using '/home/sathish/jetty6/heapdump.20110417.114115.18926.0002.phd' in response to an event JVMDUMP010I Heap dump written to /home/sathish/jetty6/heapdump.20110417.114115.18926.0002.phd JVMDUMP032I JVM requested Heap dump using '/home/sathish/jetty6/heapdump.20110417.114115.18926.0003.phd' in response to an event JVMDUMP010I Heap dump written to /home/sathish/jetty6/heapdump.20110417.114115.18926.0003.phd JVMDUMP032I JVM requested Java dump using '/home/sathish/jetty6/javacore.20110417.114115.18926.0004.txt' in response to an event JVMDUMP010I Java dump written to /home/sathish/jetty6/javacore.20110417.114115.18926.0004.txt

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  • Is it possible to install custom software on Amazon EC2

    - by quickquestioner
    I'm trudging through the Amazon docs for a quick answer, but while I'm looking I thought it wouldn't hurt to ask here. My client uses custom software that uses (wait for it) Microsoft Excel to store data as opposed a RDBMS. Either way, their server is outdated and they are interested in using Amazon's cloud services, but would installing this software be possible, or am I barking up the wrong tree? Links are welcome! Thanks for your help!

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  • Amazon EC2 Ami recommendations for free tier?

    - by Console
    Amazon web services recently introduced a free tier, where you basically get free stuff to try out AWS and run tiny sites and projects. Basically it's free as long as you remain below a certain limit of bandwidth, disk storage etc. Since going over the limits can quickly become quite expensive (for a hobbyist) I would like some recommendations or suggestions about which AMI's I can run on the free tier, for the purpose of trying out Ruby on Rails and/or Django.

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  • Amazon EC2 Nat Instance - goes out but not back in

    - by nocode
    I've followed Amazon's steps and list what I've done. I've created 6 subnets (4 private SN1: 10.50.1.0/24, SN2: 10.50.2.0/24, SN3: 10.50.3.0/24, SN4: 10.50.4.0/24) and 2 public (SN5: 10.50.101.0/24 and SN6: 10.50.102.0/24) -I have a Bastion host and a NAT instance on SN5 and assigned EIP's to both. I created a test instance on SN1. edit: -NAT instance has source/destination check disabled -On the NAT instance, I had enabled the following commands to be bootstrapped: echo 1 > /proc/sys/net/ipv4/ip_forward iptables -t nat -A POSTROUTING -s 10.0.0.0/16 -j MASQUERADE -In my VPC, the private subnets have their own route table and configured 0.0.0.0/0 to the NAT instance with 4 subnets being associated with the route table. I have a second route table for my public subnets and 0.0.0.0/16 is pointed towards the IGW (with the other 2 subnets associated with it). -For Security Groups, I have the NAT instance accepting all traffic on each of the 4 subnets and all OUTBOUND traffic is allowed. For my test server, I have allowed all outbound access and have allowed all traffic from the public subnet of the NAT host. I can ping internally with no issues. On my test instance, if I try to ping google.com, DNS resolves however I don't get a reply back. On my NAT instance, I run a tcpdump and can see the request being requested to google.com but it's not sending the reply back. My NAT host can ping and receive a reply from google. From the test host, when I ping the NAT instance, the tcpdump shows a request and receive. Is there something I'm missing? EDIT: I've figured it out - I had to save the iptable config and restart the service.

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  • Windows 2008 additional disk going offline with reboots on Amazon EC2

    - by Ernest Mueller
    OK, so I took the stock Windows 2008 64-bit Amazon AMI and wanted to add a D: drive for page file space and crash dumps. I launched the instance with a second EBS volume attached as xvdf and went into Disk Management set it online, and added the page file and crash dump settings and all that works. But when I reboot, the box comes back up with that second drive as "Offline." How do I get that disk to automatically come online on reboot (or most notably, when I turn this into an AMI and launch more instances off it - I've tried that too and same deal with the D:).

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  • best practices for setting up a new windows 2008 R2 server with ec2 AWS

    - by Alex
    Can someone comment what they would add to the following list of SOP in terms of best practices? This is being set up on AWS, and then after further testing, back in our datacenter. Standard Operation Procedure (SOP): Installation Part: 2 - Installation of Software Components in Windows 2008 R2 (Updated). Step: 1 Logon to the host through Remote Desktop. Strp: 2 Open Server Manager - Server Roles - Install Web Server IIS 7.5 with compatible of IIS 6 features and Management compatibility mode. Step: 3 Open IE/Mozilla to Download the below listed software's and save all installation files to folder called "AWS Server Install Files" for future reference.. Net Framework 2.0 (Download that from internet) Crystal reports for .Net Framework 2.0 (x64) (Download that from internet) SQL Server 2005 (AWS Image) Step: 4 Once all software's saved on local drive, then Install it one by one. Step: 5 Navigate to Desktop folder to install the below listed softwares. Microsoft Asp.net 2.0 AjaxExtention 1.0 (placed on Desktop \Softwares) WebEx recorder. (placed on Desktop \Softwares) Winrar(placed on Desktop \Softwares) Step: 6 Make sure all the software are working fine. Step: 7 Inspect the server once entirely. Step: 8 Logoff & Stop the Instance.

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  • EC2 AMI won't boot after edit

    - by Eric Lars0n
    I did something stupid, I got a new laptop and copied everything over to the new one, then wiped the old one clean. Then I realized that I forgot to copy the private key out of .ssh that I use to connect to my AWS EBS backed instance. So I can't log in to my custom AMI. So I created a new Volume from the Snapshot of the AMI, then started up a public instance and attached the Volume to it, edit the sshd_config to allow for password log in. Unmounted the volume, detached it, made a snapshot of it, then made a new AMI from the snapshot. The new AMI launches, but never passes the Status Checks and is not reachable. What am I doing wrong? Or alternatively how can I fix my problem? Edit: Adding some of the console output Linux version 2.6.16-xenU ([email protected]) (gcc version 4.0.1 20050727 (Red Hat 4.0.1-5)) #1 SMP Mon May 28 03:41:49 SAST 2007 BIOS-provided physical RAM map: Xen: 0000000000000000 - 000000006a400000 (usable) 980MB HIGHMEM available. 727MB LOWMEM available. NX (Execute Disable) protection: active IRQ lockup detection disabled RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize NET: Registered protocol family 2 Registering block device major 8 XENBUS: Timeout connecting to devices! Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,0)

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  • Amazon EC2 Web server in Load Balancer gives 503

    - by dale
    we've been running our web servers at Amazon with load balancer and auto-scaling for over a year with no problem. All of a sudden today the request began to get aborted with the error: 503 ... Backend server is at capacity The web servers are at 1% CPU and no other alarms trigger. We use Amazons load balancer and nginx. Lots of requests like this are showing up in the access_log. 10.246.114.93 - - [05/Jun/2014:20:16:09 +0000] "-" 400 0 "-" "-" 10.246.114.93 - - [05/Jun/2014:20:16:09 +0000] "-" 400 0 "-" "-" 10.246.114.93 - - [05/Jun/2014:20:16:09 +0000] "-" 400 0 "-" "-" 10.246.114.93 - - [05/Jun/2014:20:16:09 +0000] "-" 400 0 "-" "-" 10.246.114.93 - - [05/Jun/2014:20:16:10 +0000] "-" 400 0 "-" "-" 10.246.114.93 - - [05/Jun/2014:20:16:10 +0000] "-" 400 0 "-" "-" 10.246.114.93 - - [05/Jun/2014:20:16:10 +0000] "-" 400 0 "-" "-" 10.229.15.214 - - [05/Jun/2014:20:16:10 +0000] "-" 400 0 "-" "-" 10.229.15.214 - - [05/Jun/2014:20:16:10 +0000] "-" 400 0 "-" "-" Any thoughts?

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  • File replication among EC2 instances

    - by Peuge
    I am pretty new to AWS so please excuse my ignorance. We are wanting to have a setup whereby we have a SQL DB instance + web server instance. However we would like the Web server to sit behind an ELB thus allowing us to use Autoscaling. My question however is how to we replicate the web app across instances? Say for example we have two web servers running and we need to make a critical update to the web app, ultimately we would only want to upload to one instance and not both. Is it even best practice to store your web app on the instance or are there better ways to store and share the app between instances?

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  • Can I use a micro ec2 instance as a load balancer for my other large ec2 instances?

    - by Ryan Detzel
    The issue I'm having is I want to upgrade that instance often(security patches, etc) but I'm affriad something will fail and the site will be down. So, I want to have another server setup and load balance between the two that way I can easily disable one, upgrade it and once it's working add it back in the mix and repeat. What kind of machine is needed for a load balancer? Would the micro instance work just fine? The site gets anywhere from 3-10k hits/day. I plan on using nginx as the load balancer.

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  • Adding Multiple Interfaces to EC2 Ubuntu 12.04

    - by nocode
    I have a m1.medium Ubuntu 12.04 instance with two ENI's. I have a VPC setup with a private and public subnet. Private: 10.50.1.0/24 Public: 10.50.101.0/24 I initiated the instance on the private subnet. I configured a NAT instance and route all servers in the private subnet internet access. The route tables on the private subnet point towards the NAT instance and the route table on the public subnet point to the internet gateway. I am trying to add a public interface on the machine so that I can put it behind a ELB. When I added the second ENI and configured a static IP in /etc/network/interfaces and restarted the network services, I can no longer access from the Public subnet to the Private Subnet. Works Private private Private public Does not work Public private From Public Private, I ran a TCPDUMp on the private machine and can see the request coming in. My guess is it's trying to route over the new Public interface instead of the Private. Here's my route: default 10.50.1.1 0.0.0.0 UG 100 0 0 eth0 10.50.1.0 * 255.255.255.0 U 0 0 0 eth0 10.50.101.0 * 255.255.255.0 U 0 0 0 eth1 My networking knowledge is limited and I believe I have to add some routes but unsure of what command/syntax needs to be.

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