Questions tagged [amazon-ec2]

Amazon Elastic Compute Cloud (EC2)

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How to update mysql 5.7 to 8.0 Amazon linux 1, ec2

I'm using MySQL 8.0.14 for my project and I want to use it for my AWS ec2 server. I updated from 5.5 to 5.7 by following this link: Upgrade MySQL to 5.6 on ec2 But don't have any information to update ...
0 votes
1 answer
287 views

Can't bring up slave from ec2-consistent-snapshot due to uncommitted prepared transaction

I'm struggling with bringing up a slave instance using a snapshot created by ec2-consistent-snapshot, in my log it's describing the fact that an unprocessed transaction exists, but isn't that what ec2-...
0 votes
1 answer
2k views

Help with Galera Cluster Auto_Increment

We're currently running a Galera cluster of 3 DB nodes. The way we're set up (due to ORM and automagical locking), we only have one of the 3 DB nodes being written to, and the other two provisioned ...
4 votes
2 answers
3k views

change character_set_connection utf8mb4 mysql

I want to change character_set_connection utf8mb4. Its showing me utf8. I have follow this https://mathiasbynens.be/notes/mysql-utf8mb4 article and changed [client] default-character-set = utf8mb4 [...
5 votes
1 answer
4k views

What to do when I get “mysqld dead but subsys locked” in my amazon ec2 micro instance?

I have an Amazon ec2 micro instance that holds a WordPress site. Since yesterday, my mysql db keep crashing saying: [ec2-user@ip-xxx-xx-xx-xxx ~]$ sudo service mysqld status mysqld dead but subsys ...
6 votes
4 answers
30k views

How to run MongoDB as a non root user in Linux?

I can start MongoDB as $sudo service mongod start. When I start without sudo it gives me this error: /etc/init.d/mongod: line 58: ulimit: open files: cannot modify limit: Operation not permitted /etc/...
1 vote
1 answer
2k views

MySQL GTID error 1236

I am try to reduce machine come to live in production.. MySQL is making bottleneck. What i trying. I update code in one machine and also MySQL restore everything is working fine after this i am making ...
2 votes
1 answer
649 views

SQL Server for Linux 2019 - Windows Authentication not working

Hoping to pick the brains of those more knowledgeable than me. I've been trying to set up a SQL Server 2019 instance on Linux; specifically on AWS using AMI amzn2-x86_64-SQL_2019_Standard-2019.11.12 ...
0 votes
1 answer
332 views

Connecting to AWS RDS succeeds via terminal but fails in pgAdmin 4. Why?

I can establish an SSH tunnel using ssh -L 2222:<RDS-Endpoint>:5432 ec2-user@<EC2-IP> -i ~/.ssh/key.pem and then connect to my RDS using psql "host=localhost port=2222 user=postgres ...
1 vote
0 answers
89 views

Connecting to SQL in docker in EC2 becoming slower

I am now running a PostgreSQL inside a Docker inside a EC2, and a Node.js instance is connecting to it. I recently found that the connection is becoming slower. Before, restarting the instance only ...
0 votes
3 answers
2k views

Best Approach to Migrating Oracle to MySQL - Run on EC2 in AWS

I'm trying to migrate an Oracle schema as well as all of the data within the DB to a MySQL database. I want to then make an EC2 app on AWS to kick off whatever I've written for this. Are there any ...
0 votes
1 answer
77 views

Using AWS DMS for EC2 MariaDB instance to MariaDB RDS instance

After combing through AWS documentation, I am still unclear if DMS supports migration from EC2 instances running latest mariadb version to RDS mariadb instance?I see that MySQL is supported, but am I ...
0 votes
2 answers
768 views

How to ensure backups are successfully persisted to S3 when using Ola Hallengren solution on AWS EC2 Instances

Improving Existing Backup Approach By Using Ola Hallengren Backup Solution Deploying a new backup approach to eliminate dependency on a vendor tool (Cloudberry) that I've leveraged before. In my ...
0 votes
1 answer
774 views

Mongodb 3.6.3 disappears after 2 weeks on centos 7 ec2 instance

My Mongodb has disappeared 2 times, after 2 weeks, over the weekend within a 4 week time period. I had a snapshot to recover from but I can't keep on recovering my db every 2 weeks. In an ec2 ...
2 votes
3 answers
804 views

Backup TO URL S3

Can I do a SQL backup to AWS S3 URL from an EC2 machine I know that Azure side is possible but I do not know if it is possible AWS side thank you for your advice
0 votes
0 answers
797 views

How to connect PgAdmin4 to postgresql 9.5 database process running on AWS EC2 server

I have a postgres database running on a linux EC2 instance. I want to view the data inside the tables, and currently the only way I can do that is via command line on the host server by: sudo su ...
0 votes
1 answer
115 views

MySQL Not Resolving % in Host

Running MySql server 8.0.31 on an Amazon EC2 instance (52.99.189.74) in Ubuntu 22.04. When I log in to the mysql prompt with sudo, this is how the user and host columns of the mysql.user table look ...
1 vote
2 answers
267 views

Wordpress UPDATE queries on MySQL database stuck

I have an Amazon 24XL server 96 Cores 378 GB RAM Database size 5.7G Debian GNU/Linux 9 (stretch) PHP 7.3.16 mysql Ver 15.1 Distrib 10.3.22-MariaDB I have only one WordPress site where users read ...
3 votes
1 answer
1k views

Configuring slave from EC2 master to Amazon RDS slave

I am configuring replication from EC2 master to Amazon RDS instance. After starting the slave, I don't see any errors but I see slave_IO: _thread is connecting. Master version:5.6.23 Slave ...
1 vote
1 answer
217 views

Table does not exist even if there is one

I have MySQL master-slave replication setup in Amazon EC2. For the sake of resilience, I have set up LVM on RAID 10 array, on both master as well as slave. I have been using ec2-consistent-snapshot ...
13 votes
7 answers
32k views

"ORA-24454: client host name is not set" when connecting from Ubuntu instance on AWS EC2

Some background: I am attempting to connect to an Oracle database. I have a username, password, IP address, port, and service name. I only have access to this database from an Ubuntu EC2 instance on ...
0 votes
0 answers
165 views

Сan't automatically connect to RDS via the script?

I'm using script on ec2 user data, that connects to rds. But the script doesn`t work. #! /bin/bash yum update -y yum install -y httpd service httpd start usermod -a -G apache centos chown -R centos:...
0 votes
1 answer
1k views

How to upgrade Mysql 5.5 to 5.6 without data loss on aws-ec2?

MySQL server (5.5) is running on aws-ec2 instance with following linux details NAME="Amazon Linux AMI" VERSION="2015.09" ID="amzn" ID_LIKE="rhel fedora" ...
0 votes
1 answer
46 views

Where to install SQL on EC2

If SQL Server and it's system databases are installed on an EC2 local drive, will they be recovered in a crash? My understanding is nothing but temporary files and the OS should be on the local ...
28 votes
2 answers
167k views

Mongo Create a user as admin for any database raise an error

I am trying to create a simple user with the rights permission to access to any database and can do any actions. When I trying to execute the createUser command I got this error: db.createUser({ user:...
1 vote
0 answers
262 views

Calculating IOPS in a SQL Server EC2 - RDS migration

I'm evaluating costs for a possible migration of a SQL Server that is currently running on Amazon EC2 to Amazon RDS. On the EC2 instance I have six volumes, described as follows: type size IOPS gp2 ...
0 votes
1 answer
2k views

Architecture for low-latency RESTful server on Amazon EC2 with Node.js and a database

This is a question for DBAs with a lot of practical experience with large scale deployments. We are trying to build an app with very low latency. (We really want to create the best user experience, ...
2 votes
1 answer
132 views

QuasarDB cluster stuck in IOWAIT on AWS EC2 instances

I am experiencing a system freeze in IOWAIT on my QuasarDB cluster. I am continuously ingesting data at 10 GBit/s using the QuasarDB batch API. After a couple of hours, I have all the qdb threads in ...
6 votes
3 answers
2k views

Recommended mirroring alternative?

SETUP 2 Amazon EC2 SQL 2014 servers in different availability regions. Synchronous mirroring S3 for archiving full backups & logs at night Right now for simplicity, nightly full compressed ...
3 votes
1 answer
3k views

Replication from EC2 Master to RDS Slave - Connecting to master

I am migrating my company's database from an EC2 instance to an RDS instance. I have already migrated a snapshot of data and am now trying to set up replication to get the data that has been added ...
32 votes
2 answers
24k views

Amazon RDS for MySQL vs installing MySQL on an Amazon EC2 instance

At work, we host all our webservers on Amazon EC2 and usually have used MySQL databases installed on the same box as our Apache webserver, and communicated with them on localhost. We now face a need ...
6 votes
0 answers
3k views

Random Spikes in DB Connections - Amazon RDS

I'm running an EC2 instance (c3.large) with an RDS instance (db.t2.small). I'm frequently having issues with DB Connections spikes all of a sudden. PROBLEM: As you can see, I'm getting huge amounts ...
0 votes
1 answer
94 views

Mongo DB Memory Utilisation freezes app needs restart

I am running a project using Mongo DB and Django, I have 2 separate instance for my Django project and database each 16GB ram t2xlarge ubuntu ec2 instances. I am facing issue that within a day or two ...
2 votes
0 answers
4k views

DBeaver connection via SSH tunnel

Using DBeaver, I'm trying to connect to my AWS ec2 instance where I've installed a MariaDB database. I've created a new connection as: Connection: AWS / Maria DB Server Host: localhost (because I'm ...
1 vote
0 answers
373 views

What would cause slow disk access on an AWS EBS SQL Server? (PAGEIOLATCH_SH)

I have an EC2 instance (r5a.4xlarge) which should be able to do 2Gbps+ in EBS access. This machine has a 7TB mounted gp2 volume, with 16,000 IOPS, which is mounted and contains a SQL Server database ...
9 votes
3 answers
9k views

How to configure replication from PostgreSQL (RDS) to vanilla PostgreSQL?

I have an Amazon RDS Postgres DB and I created a "replicator" user and granted it the "replication" privilege. db=> create role replicator login password 'something'; CREATE ROLE db=> alter ...
2 votes
2 answers
2k views

Export and Import large database from one rds of amazon to newly created amazon rds

We are facing some issue. We would like to export and import mysql database "xyz" from old rds say xyz-rds to newly created rds say abc-rds (mysql). We are approaching common method taking full ...
1 vote
1 answer
4k views

Binding specific ips with Mongodb

I am using Mongodb 3.6.3 on Centos 7. I am running the below command: sudo mongod --storageEngine wiredTiger --dbpath /data --bind_ip_all --logpath /var/log/mongodb/mongod.log --fork and everything ...
4 votes
2 answers
2k views

MySQL hitting IOPS wall in AWS, not able to utilize full volume IOPS level

We are scaling up an existing MySQL 5.6.41 (with Galera) based system running in AWS on EC2, and are hitting a wall in performance, which we believe is narrowed down to storage IOPS. Please note for ...
1 vote
2 answers
62k views

How to solve Vendor Code 17002 when connecting to a remote Oracle database?

I have an Oracle database 12c standard edition release 12.2.0.1.0 running on a Linux instance of AWS ec2. When I try to connect to it remotely from my machine (macOS) using SQL Developer I get an IO ...
0 votes
0 answers
25 views

Migrating data to new mysql rds instance

I have 1TB size mysql database for production . Now i want to migrate this database on new mysql RDS instance . Please suggest me which backup policy should i apply here like Mysqldump,XtraBackup . ?
1 vote
1 answer
105 views

MySQL cpu at 400% on c5.xlarge box

Box is running only mysql and CPU is at 400% constantly. I can't seem to find anything that would be causing it. I've changed a few values in my.cnf based on some research, but had no luck reducing ...
user avatar
1 vote
0 answers
591 views

Unable to connect to postgresql EC2 instance from VPN

I have an EC2 instance of timescaledb running on AWS. For security purposes, my team members and I are using OpenVPN so that we have access to it and the same IP address has been defined in the ...
0 votes
1 answer
29 views

how to setup mongodb replica on cloud server?

I want to setup mongodb repicaset on my cloud server(AWS ec2) but I have only one IP address. Currently I have make /etc/hosts two entries 127.0.0.1 dbnode1 and xx.xx.xx.xx dbnode2 but when I try to ...
-1 votes
1 answer
157 views

Connecting to RDS MySQL from command line sometimes fails -- why?

I have used RDS for many years, and MySQL for even longer, so I am very familiar with both -- yet, I am running into an odd thing that I cannot figure out. Wondering if someone can help. I have 2 ...
0 votes
1 answer
926 views

How to remotely manage (with PhpMyAdmin) a MySQL RDS on a load-balanced AWS Elastic Beanstalk setup?

Although there are similar questions and topics, I can't find a solution that currently works. I specifically wrote remotely manage because I'd like to use my home computer's PhpMyAdmin to directly ...
1 vote
0 answers
173 views

Mongodb is taking almost 100% of CPU

Good Morning, I have installed MongoDB on an EC2 machine with 2CPU. At the first time when I SSH Login I See this error message, System information disabled due to load higher than 2.0 However, ...
2 votes
1 answer
1k views

Why does my MySQL page cleaner thread step up its minimum CPU usage over time and never decrease back to zero?

I’m running a MySQL 5.7.29 instance on Ubuntu 16.04 on a dedicated Amazon EC2 t3a.XLARGE instance (4 vCPUS, 16 GiB Memory connected to an iOPS optimized EBS volume with 1000 provisioned iOPS) and have ...
0 votes
2 answers
8k views

Cannot Access New Installation of MySQL on an Amazon EC2 Instance [closed]

I installed MySQL server on an Amazon EC2 instance and started it. Seems like it started, but when I try to do mysql -u root I get this error. mysql -u root ERROR 1045 (28000): Access denied for ...
0 votes
2 answers
188 views

EC2 and setting up MYSQL Replication

my database size is very big around 100gb and when I restore it takes 3 days to restore. I am using amazon ec2. My question is I want to setup a new slave to MYSQL master, can I take a snapshot of ...