Search Results

Search found 8664 results on 347 pages for 'rails postgresql'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 184/347 | < Previous Page | 180 181 182 183 184 185 186 187 188 189 190 191  | Next Page >

  • Which upgrade path for disk IO bound postgres server?

    - by user41679
    Hi all, We currently have a Sun x4270 with 2xquad core Xeon Nehalmen 2.93ghz cores (16 threads), 72 gig of ram and 16 x 10k SAS disks split between the os raid 1, a partition for the Write Ahead Logs which is raid 10 and a partition for the database tables and indexes which is also raid 10, all xfs. I'm currently evaluating which path to go down in terms of upgrades. We'll be sharding the DB at some point soon, but for now I need to focus on hardware upgrades specifically. The machine is not CPU or memory bound at all at the moment, just IOWait is become an issue. The machine is mostly write access as we have a heavy caching layer. We're seeing about 300 write IOPS average on both the database partitions. We don't have any additional storage infrastructure like a Fiber Channel or ISCSI network. Budget isn't too much of a concern, something inline with the size of this server (i.e no $1m IBM machines) Space is ok on the DB side of things, we're running out obviously but there's also some reduction we can do. Additional space would be good though. My current thoughts are either: * ISCSI SAN, possible with 10Gbit network that has solid state acceleration. * FusionIO card / Sun F20 card (will the FusionIO card work in the Sun box? * DAS shelf (something like this http://www.broadberry.co.uk/das-direct-attached-storage-servers/cyberstore-224s-das) which a combination of 15k sas disks and some Intel X25-E drives for DB indexes etc) what would I need to put in the x4270 to add a DAS shelf? I think it's a SAS HBA card, do I have to use Sun's own card or will any PCI Express card work? Anything else??? what would you guys do from your experience? I appreciate it's a lot of questions, but I haven't expanded a DB machine for a number of years and the landscape has changed dramatically since then! Any advice or feedback would be very much appreciated. Let me know if there's anything else I can clarify. Thanks in advance!

    Read the article

  • AWS RDS Timeout

    - by warder57
    I know next to nothing about networking/servers. So I'm assuming I'm missing something obvious. All of the resources I can find on this, either don't work or are outdated. I created a brand new AWS account on the free plan. I created a postgres RDS DB instance. I made sure that this RDS instance is set to publicly accessible. This RDS instance has the default VPC/Security Group settings. In order to connect to this DB from my local machine, I used pgadmin3 and followed the instructions provided on the AWS documentation page. Seen here: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ConnectToPostgreSQLInstance.html I've double checked all of the information required to connect: Host: whatever.whatever.us-west-2.rds.amazonaws.com Port: 5432 Username: USERNAME Password: PASSWORD When I try to connect to the database, my connection fails due to a timeout. (During step 4 in the above guide.) Can anyone point me to whatever I am missing? Thanks in advance

    Read the article

  • How to make schema dumps comparable between Windows and Linux

    - by Jonathan
    I have two systems running, one on linux and the other on windows. From the linux box, I ran pg_dump against both systems and dumped the schema. pg_dump command: pg_dump -h HOST -U USER -s -f /tmp/out.sql DB_NAME After I removed all of the "--" comments, I diffed the files together. Diff output snippet, linux compared to windows: - ADD CONSTRAINT sys_c004775 FOREIGN KEY (ruleid) REFERENCES rule(ruleid); + ADD CONSTRAINT sys_c004775 FOREIGN KEY (ruleid) REFERENCES "rule"(ruleid); The linux dump does not quote any entities and windows does. Is this a function of some encoding or just of a difference between windows and linux? Is there an option in pg_dump to make the output more consistent?

    Read the article

  • Server Clustering (Django, Apache, Nginx, Postgres)

    - by system-matrix
    I have a project deployed with django, Apache, Nginx and Postgres. The project has requirement of live data viewable to customers. The projects main points are: 1. Devices in field send data to server(devices are also like website users) after login. 2. There is background import process which imports the uploaded data in postgres. 3. The webusers of the system use this data and can send commands to the devices, which devices read when they login. 4. There are also background analysis routines running on the data. All the above mentioned setup and system is deployed on one amazon EC2 cloud machine. The project currently supports over 600 devices and 400 users. But as the number of devices are increasing with time the performance of the server is going down. We want to extend this project so that it can support more and more devices. My initial thinking is, We will create one more server like current one and divide the devices amongst these to servers. But Again We need a central user and device managment point though django admin. Any Ideas? What are the best possible ways to create a scalable architecture? How can I create a Postgres Cluster and Use it with Django, if possible?

    Read the article

  • Out of memory error while uploading file into a blob

    - by stacker
    I received a out of memory error SQL Error: 0, SQLState: 53200 from postgres while trying to upload a 10MB file into a single row with a column of blob-type bytea. Which configuration parameters should be changed to allow inserts of this size, or should this work out of the box without modifications? Is there an option like in informix-db to create so called blob-spaces?

    Read the article

  • Scaling a video processing application on EC2?

    - by Stpn
    I am approaching the need to scale a video-processign application that runs on EC2. So far the setup is one machine: Backbonejs frontend Rails 3.2 Postgresql Resque + S3 for storage The flow of the app is as follows: 1) Request from frontend. Upload a video. 2) Storing video 3) Quering external APIs. 4) Processing / encoding videos. 5) Post to frontend. I can separate the backend and frontend without any problems, but when it comes to distributing the backend between several servers I am a bit puzzled. I can probably come up with a temporary solution (like just duplicating apps making several instances), but since I don't really have expertise in backend system administration, there can be some fundamental mistakes.. Also I would rather have something that is scalable. I wonder if anyone can give some feedback on the following plan: A) Frontend machine. Just frontend, talks to backend via REST Api of sorts. B) Backend server (BS), main database. Gets request from 1), posts to 2) saves uploads to 3) C) S3 storage. D) Server for quering APIs. Basically just a Resque workers, that post info back to 2) E) Server for video encoding. Processes videos uploaded on 3) and uploads them back. So I will have: A)frontend \ \ B)MAIN_APP/DB ----- C)S3 Storage (Files) / \ / / \ / D)ExternalAPI_queries E)Video_Processing (redundant DB) (redundant DB) All this will supposedly talk to each other via HTTP requests. My reason for this is that Video Processing part is really the most resource-intensive and I would just run barebones application that accepts requests and starts processing them. Questions: 1) In this setup I will have the main database at B) and all other servers will communicate with it via HTTP requests (and store duplicates of databases also I guess..for safety reasons). Is it the right approach or should I have 1 database that everyone connects to (how then?) 2) Is it a good idea to separate API queries from Video Processing part? Logically they are very close (processing is determined by the result of API queries), but resource-wise Video Processing is waaay more intensive. 3) what should I use to distribute calls between backend apps based on load?

    Read the article

  • Amazon ELB and use of address / server names across multiple servers

    - by Stpn
    I am setting up Nginx servers behind the ELB. I set up so that api.app.com points to an ELB. I wonder which addresses I should use for remote connections, Nginx settings etc.. 1) For example, in Nginx: Should I do server { listen 80; #What is the right line here: # server_name <WWW.NAME.COM> OR <ec2-.....compute-1.amazonaws.com> OR <MLB-....amazonaws.com>?; passenger_enabled on; ..... } 2) I connect servers behind ELB to remote Postgres database. In Postgres settings should I open the ELB address (MLB-...amazonws.com) or to individual EC2 IPs?

    Read the article

  • Odd log entries when starting up PotgreSQL

    - by Shadow
    When restarting pgSQL, I get the following log entries: 2010-02-10 16:08:05 EST LOG: received smart shutdown request 2010-02-10 16:08:05 EST LOG: autovacuum launcher shutting down 2010-02-10 16:08:05 EST LOG: shutting down 2010-02-10 16:08:05 EST LOG: database system is shut down 2010-02-10 16:08:07 EST LOG: database system was shut down at 2010-02-10 16:08:05 EST 2010-02-10 16:08:07 EST LOG: autovacuum launcher started 2010-02-10 16:08:07 EST LOG: database system is ready to accept connections 2010-02-10 16:08:07 EST LOG: connection received: host=[local] 2010-02-10 16:08:07 EST LOG: incomplete startup packet 2010-02-10 16:08:07 EST LOG: connection received: host=[local] 2010-02-10 16:08:07 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:08 EST LOG: connection received: host=[local] 2010-02-10 16:08:08 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:08 EST LOG: connection received: host=[local] 2010-02-10 16:08:08 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:09 EST LOG: connection received: host=[local] 2010-02-10 16:08:09 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:09 EST LOG: connection received: host=[local] 2010-02-10 16:08:09 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:10 EST LOG: connection received: host=[local] 2010-02-10 16:08:10 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:10 EST LOG: connection received: host=[local] 2010-02-10 16:08:10 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:11 EST LOG: connection received: host=[local] 2010-02-10 16:08:11 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:11 EST LOG: connection received: host=[local] 2010-02-10 16:08:11 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:12 EST LOG: connection received: host=[local] 2010-02-10 16:08:12 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:12 EST LOG: connection received: host=[local] 2010-02-10 16:08:12 EST FATAL: password authentication failed for user "postgres" 2010-02-10 16:08:12 EST LOG: connection received: host=[local] 2010-02-10 16:08:12 EST LOG: incomplete startup packet My question regarding a potential consequence of this is posted here: http://stackoverflow.com/questions/2238954/mdb2-says-connection-failed-db-logs-say-otherwise , but I didn't realize this was happening when I asked that question, and I figured this [part of the] problem is for SF. Edit: I can connect to the database and manipulate things normally with the psql CLI and the postgres user.

    Read the article

  • Basic iptables for a webserver: SSL Tomcat, postgres, ssh and that's it.

    - by Paperino
    This is probably as basic as it gets but I'm a developer and really have no experience with iptbles. The only connections I need opened are: eth0 (outward facing) ssh ping SSL to tomcat (forward port 443 to 8443) eth1(local subnet) connection to postgres server Everything else should be blocked. My current attempts seem to be leaving all other ports open. I wonder what gives. Thanks serverfault!

    Read the article

  • What free OS should I use on my VPS?

    - by earlz
    Hello, I looked a bit but didn't see any duplicate of this so my question is which free(open source) OS do you use on servers and why do you use that OS? Background I have a VPS at Linode. There is a broad range of options for which OS I can put on it including both 32 and 64bit OSs. I just use it to run my small blog and for hosting random files. It's very low traffic. I have been using 64bit Arch Linux on my VPS and though I love the OS for general usage, for a server the constant breakage is troublesome. So I'm considering trying something new and am looking for suggestions.

    Read the article

  • 32bit ODBC Postgres driver on Windows 2008 R2 x64

    - by uaise
    I'm trying to install the Postgres ODBC 32bit driver on a Windows 2008 R2 64bit machine. After installing it, with no errors, I go to the ODBC panel, the 32bit version under the /syswow64 folder and try to add the driver, select the Postgres driver from the list but I get an error 126, saying he can't find the driver at the specified path. The problem is that the path he shows me, is the exact path the driver is in, I double checked on the registery (on the HKLM\SOFTWARE\Wow6432Node\ODBC\ODBCINST.INI\ location) and it's fine there too. A couple more people on technet have the same issue too. Did anyone ever run into this? Any ideas would be greatly appreciated. edit: the driver works fine on my win7 x64 test machine, this behaviour only happens on the server.

    Read the article

  • High shmmax value in Redhat 6.3

    - by xpapad
    We are using Redhat 6.3 with 30G RAM to host our Postgres server. The (default) shmmax value is 68,719,476,736 In some forums I have read that having an shmmax value larger than the RAM causes extensive paging, but in the Redhat forums it warns against changing a kernel parameter that is already configured to a value larger than the minimum requirements for an environment. In ServerFault I've read that this probably has no impact. So is there any impact of having shmmax value RAM in a DB server, or the kernel understands this and handles it appropriately? Thanks

    Read the article

  • Determining which database instance makes biggest IO

    - by user2008937
    Assuming that I have a dedicated server on which I am running multiple instances of mysql and postresql servers. How without iotop determine which instance in particular time (proc/pid/io shows data collected in some peroid of time) makes the biggest IO (so it increases IOWAIT)? When lots of ppl do something on DB then I clearly see which instance is making the load because of high cpu usage, but I had a situation when the cpu usage was just normal, but very high iowait made a huge load on server and i had problem finding process that was making some outstanding IO

    Read the article

  • Can't read directory owned by my group

    - by Jonathan
    I moved the postgres data directory to a separate partition and it works great. The directory is owned by postgres user and postgres group. d-wx------ 11 postgres postgres 4.0K 2010-06-11 08:28 data/ I added myself to the group > sudo addgroup me postgres > groups me me : me adm dialout cdrom plugdev lpadmin admin sambashare postgres And gave the group read and execute permissions to everything in the directory. sudo chmod -R g+rx ./data d-wxr-x--- 11 postgres postgres 4.0K 2010-06-11 08:28 data/ But I still can not CD or LS the directory. > ls data ls: cannot open directory data: Permission denied What beginner mistake am I making?

    Read the article

  • Remove postgres from Mac - installed in /usr/local/, can I just delete files?

    - by Richard
    I want to completely uninstall postgres and start from scratch - the version I have is refusing to work with PostGIS 2.0. I have read other answers on how to do this, but none of them seem to fit the way postgres is set up on this machine. I'm not sure postgres was originally installed on this machine - it wasn't via brew or Postgres.app or the EnterpriseDB installer - but it seems to be living in /usr/local: $ which psql /usr/local/pgsql-9.1/bin/psql The postgres binary itself is in /usr/local/var/postgres/. How can I kill it forever? Can I simply go to /usr/local and do rm -rf pgsql-9.1, and the same in /usr/local/var, and make sure there are no paths in my profile file? Or is there more to it than that? From memory I think I'll need to delete the database files too somehow. Thanks for the help.

    Read the article

  • Exported csv file is not in right lining with pgadmin

    - by user938363
    We exported a pg 9.3 table to csv file in pgadmin. The problem is that from about 10th line, the lining of the columns were messed up and did not line up correctly with the columns above. We tried a few times and every output has the same problem. We follow the instruction on http://www.question-defense.com/2010/10/15/how-to-export-from-pgadmin-export-pgadmin-data-to-csv for export. The only difference that UTF8 is selected instead of localcharset. What's the right way to export csv in pg?

    Read the article

  • Using Postgres on Volusion site

    - by Sean
    Okay, I apologize if this is so basic that I should know the answer, but I'm not sure where else to go for the solution. I would like to start a small store site using Volusion. I would like some custom ASP code to query data that I currently have in a Postgres database. I would like to be able to just move the database file(s) onto the Volusion server via ftp and access them from my store site (via the custom ASP). Do I need to install Postgres onto the server to do this, or can I just ftp my database file(s) and access them with the ASP code? I think I need to install Postgres, but would like to do this without such an installation if possible.

    Read the article

  • how to update paths

    - by sujith
    I built my system in my own machine. then i host it server. the database store some paths ex:/home/dsppace/store/123.pdf like wise. when i host it the pdf is not open. how i settle this problem?

    Read the article

  • Cron job failing to backing up a Postgres database

    - by user705142
    I'm unsure what's going on here: I've got a backup script which runs fine under root. It produces a 300kb database dump in the proper directory. When running it as a cron job with exactly the same command however, an empty gzip file appears with nothing in it. The cron log shows no error, just that the command has been run. This is the script: #! /bin/bash DIR="/opt/backup" YMD=$(date "+%Y-%m-%d") su -c "pg_dump -U postgres mydatabasename | gzip -6 > "$DIR/database_backup.$YMD.gz" " postgres # delete backup files older than 60 days OLD=$(find $DIR -type d -mtime +60) if [ -n "$OLD" ] ; then echo deleting old backup files: $OLD echo $OLD | xargs rm -rfv fi And the cron job: 01 10 * * * root sh /opt/daily_backup_script.sh It produces a database_backup file, just an empty one. Anyone know what's going on here?

    Read the article

  • How do I automatically connect my client to an ODBC data source on another machine with dynamic IP?

    - by Kdansky
    At the customer's place, we've got a postgres DB on a server, and a few clients. We connect them through ODBC-drivers, and all machines run windows (usually XP). Now we had a few annoying issues: The client "forgets" some flags in the ODBC drivers, such as ByteA as LO. Every time anything changes, we have to reset that, and type in the password, and sometimes even the IP of the server. On x64 machines running Windows 7, configuring this is a pain as the system settings dialogue will only show 64-bit connections by default. And most importantly: If the server changes IP because the customer restarts or replaces a switch, all connections are lost. Annoyingly, this cannot be fixed with just correcting the IP, but rather, we have to check every single place (even hba_conf) because all the settings magically disappear. Our customers often are very small companies, where "server" means "that one PC in the other room", and not "Oracle mainframe in the dungeon", so we don't want to rely on them not restarting switches. Is there a better way than to rely on these really unstable settings? Are these settings somewhere in a file which I could edit manually, to make fixing it easier?

    Read the article

  • Is it possible to upgrade from Postgres 8.3.3 with existing databases to 8.4.2 (installed windows vi

    - by WildWezyr
    I'm considering upgrade from Postgres 8.3.3 to 8.4.2 on my machine (it has Windows Vista). Windows Installer (one click installer) for Postgres 8.4.2 that can be downloaded from enterprisedb.com offers only fresh install (it does not recognizes my current installation of v8.3.3). Is it possible to upgrade with all existing databases converted and visible (automatically migrated?) in new version just after upgrade? Or I have to do something more - backup/restore all my databases manually?

    Read the article

  • Ubuntu+Mono+Postgres+ASP.NET 4.0. No problem?

    - by wreck_of_u
    Would this be ok? I'm an ASP.NET developer and I'm planning to build "portable" web app servers based on Atom D510 mini-ITX. I have ran Ubuntu 10 with MySQL along with a separate IIS machines (win 2k3, 2k8) before with no problems. But now I'm thinking of "packaging" a web/db server into one small, cheap machine. I thought of Ubuntu/Mono/Postgres/ASP.NET, that it would be a good idea but I'm not sure? I have not actually tried it yet. Your thoughts?

    Read the article

  • Is it safe to set MySQL isolation to "Read Uncommitted" (dirty reads) for typical Web usage? Even with replication?

    - by Continuation
    I'm working on a website with typical CRUD web usage pattern: similar to blogs or forums where users create/update contents and other users read the content. Seems like it's OK to set the database's isolation level to "Read Uncommitted" (dirty reads) in this case. My understanding of the general drawback of "Read Uncommitted" is that a reader may read uncommitted data that will later be rollbacked. In a CRUD blog/forum usage pattern, will there ever be any rollback? And even if there is, is there any major problem with reading uncommitted data? Right now I'm not using any replication, but in the future if I want to use replication (row-based, not statement-based) will a "Read Uncommitted" isolation level prevent me from doing so? What do you think? Has anyone tried using "Read Uncommitted" on their RDBMS?

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 180 181 182 183 184 185 186 187 188 189 190 191  | Next Page >