Questions tagged [centos-7]
The centos-7 tag has no usage guidance.
48
questions
1
vote
1answer
34 views
Mysql showing 100% CPU usage
We are facing problem of high cpu usage for mysql process (almost 100%). Here is the information related to server
Server Infos:
VPS - CENTOS 7.9 kvm - 6 GB RAM - 4 Core CPU - 180 GB SSD - MariaDB
And ...
1
vote
1answer
19 views
When changing the default port number from 5432 to 5332, why do I get a unix domain socket error?
I successfully followed the Postgres 11 installation instructions on Centos 7 found here. I am able to successfully create schemas / tables and insert data into the database over port 5432 with no ...
1
vote
2answers
225 views
how to change “localhost” in MariaDB
I wonder if there is any way to change localhost in MariaDB.
For example, while creating a user in database, it shows
'user'@'localhost'
I would like to know how to change localhost to any other ...
1
vote
1answer
220 views
MySQL InnoDB Cluster - Add instance issue with local port
I have an issue to add instance to MySQL InnoDB Cluster using MySQL Shell. Here are the steps that I have done:
Login to one DB-01 node
Run command: mysqlsh
shell.connect('username@ip-address:port');
...
0
votes
0answers
25 views
MARIADB-10.3.14 VM OOM KILLED AND TUNING [duplicate]
DEDICATED VM FOR MARIADB -
CENTOS 7.7 \\ 16VCPU/250G - JBOD DISKS/NO SSD.
OS PARTITION AND DATABASE ARE ON DIFFERENT FILESYSTEM.
Span of every two weeks, Kernel OOM happens.
Reducing ...
0
votes
0answers
56 views
Pgadmin4 : unable to login.Getting error failed to create ssh tunnel
I am using CentOs7, On the command line I login to the unix server via ssh (sshpass -p $PASS ssh linux_user@linux_box_ip ;;) and then give the below command after logging to the linux box.
$ psql -h &...
0
votes
1answer
878 views
[[FATAL]] [[DBT-06103]] The port (5,500) is already in use [duplicate]
I am trying to install oracle 18c XE on CentOS 7. I have opened the ports:
firewall-cmd --permanent --add-port=1521/tcp
firewall-cmd --permanent --add-port=1630/tcp
firewall-cmd --permanent --add-...
1
vote
3answers
702 views
MySQL Optimization on my server
I have an active server running around 80-100 active websites. I would like to optimize the server and possibly reduce the amount of RAM and optimize my MySQL settings. I have 30 GB of RAM assigned ...
0
votes
1answer
103 views
MySQL database not loading table data
My centOS 7 server had an unexpected shutdown. For some reason one of the mysql database shows that all tables are empty, but if I browse the files in /var/lib/mysq/database I can see the files(.frm ...
0
votes
0answers
17 views
How to find out all the postgresql database cluster data directories (running and Shutdown instances) on linux server
Could you please help us to find below details.
How to find out all the Postgresql database cluster data directories (running and Shutdown instances) on Linux server.
Regards,
Siva.
0
votes
1answer
2k views
Oracle Database Client Installation 12c minimal install - Centos / Red Hat 7
I'm looking at reducing the Linux package prerequisites when installing the Oracle Database Client 12c on the below headless application server / stack:
Install file: V839967-01.zip
Application ...
12
votes
3answers
21k views
PostgreSQL 11 error: column p.proisagg does not exist
Using phpPgAdmin v5.6 and PostgreSQL v11.2 on CentOS v7, when I try to access the Functions tab within the public schema, I get the following error:
ERROR: column p.proisagg does not exist
LINE 18: ...
0
votes
1answer
221 views
MongoDB Replication Set Configuration Issue on CentOS 7
My mongodb instance will not run as standalone and I haven't been able to discover why. Its probably something simple. Please point me in the right direction.
Linux myserver 3.10.0-514.el7.x86_64 #...
0
votes
1answer
713 views
how to install PL/SQL Developer on centos
Can we install and run PL/SQL Developer on CentOS 7 server? I couldn't find installation documents anywhere. If the installation is possible can someone guide me on this.
0
votes
0answers
3k views
Newly built MySQL Galera Cluster does not start up in CentOS 7
I am setting up a 3 node MySQL Galera Cluster lab environment. All 3 nodes are CentOS 7 and followed the steps in below blog to setup mysql-wsrep-5.7
https://www.dreamvps.com/tutorials/install-...
1
vote
0answers
819 views
mysql 8 is failure to start after upgrade from 5.7
I've upgraded one of the slave server from mysql 5.6 to 5.7 and now 5.7 to 8.
But after up-gradation steps done when i use systemctl start mysqld.service or systemctl restart mysqld facing error and ...
1
vote
1answer
713 views
Oracle 11g stuck at installation in oracle linux no error msg only showing | and stuck
oracle not install on centos7 while installation it is stuck at 84% no error msg showing
0
votes
1answer
62 views
MariaDB replication from master to slave
After doing some research around this topic, I should be attempting this task soon. However, I have two questions going around my head - could do with an experienced professional answering them.
I am ...
0
votes
1answer
2k views
Change in bind_ip value is not reflecting
I have mongo installed on Centos instance in AWS and I am connecting to the mongoDB server from my system. To connect from remote system we need to change bind_ip value to 0.0.0.0 in /etc/mongod.conf ...
-2
votes
2answers
56k views
psql: FATAL: password authentication failed for user “postgres”
I am running postgresql-9.6 on Rhel7. I know that the default/root user doesnt have a password, however i will like to use phpPgAdmin to do my work. the problem is I have edited my pg_hba.conf file to ...
2
votes
1answer
4k views
Cannot login to postgres with newly created users
I have created a number of users in postgres using createuser --interactive --password but whenever I run sudo -i -u newuser I receive the following error:
sudo: unknown user: staging
sudo: unable to ...
1
vote
0answers
573 views
Error on cassandra-3.11.3-1.noarch centos7
I've a cluster consisting of 5 cassandra nodes. The cassandra version used is
cassandra-3.11.3-1.noarch
The keyspace strategy and is defined as follows:
CREATE KEYSPACE my_keyspace
WITH ...
2
votes
1answer
139 views
Database Directory storage is full need to change link it to new Partition
My mysql Database Directory size is full. So I want to change it to another partition where there is large amount of space. The database version am using is MySQL 5.7.23 and OS is CentOS 7.
After ...
1
vote
1answer
2k views
Parse error in pg_hba.conf [closed]
Hope this is not as stupid a question as I think it is. But I'm in a loop and unable to find a solution.
I installed Postgres in centos machine. The installation worked fine (apparently). Now I have ...
1
vote
2answers
266 views
SQL Server 2016 - write output file to mapped Samba share (CentOS 7)
I have a stored proc that's going through the tables, getting data, and write the result into a csv file (mainly to provide up to date data for FTP customers).
When writing it to the local D: drive, ...
1
vote
2answers
1k views
Unable to Restart PostgreSQL after attempting to move pg_xlog to different partition
I am having problems getting PostgreSQL back up and running on my CentOS 7 server.
Some Context:
After noticing that I was quickly running out of storage space on the /root partition of the server, I ...
1
vote
1answer
3k 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 ...
0
votes
1answer
581 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 ...
3
votes
4answers
841 views
How to best store pixels in a database?
When loading data into a table, I get the following error:
ERROR: row is too big: size 8680, maximum size 8160
The table has 1000+ columns in it, which appears to be the problem. The general ...
20
votes
6answers
138k views
How to restart PostgreSQL server under CentOS 7
I installed PostgreSQL 10.1 under a CentOS 7.3 environment.
The service is started (postmaster.pid file present under /var/lib/pgsql/10/data), but I need to reload configuration or restart the server ...
1
vote
2answers
247 views
Mysqld process not showing all options on command line in CentOs 7
Mysqld process showed all config file options on command line in CentOs 5 and CentOs 6. But it's not showing the same in CentOs 7. I am using mysql 5.7.21 on CentOs 7 example stated below and 5.7.19 ...
0
votes
1answer
2k views
MongoDB 3.4 Server not starting with bind error following a CentOS 7.4 security update
MongoDB 3.4 server is failing to start following a CentOS security update and reboot.
No configuration changes made. The previous update and reboot a couple of days earlier did not cause any ...
3
votes
4answers
11k views
How to install pgcrypto extension in postgres 10 on CentOS 7
I'm in the process of creating a postgres database for production in CentOS 7. So I already installed (yum install postgresql10-server postgresql10 after adding the repos of course) and configured ...
0
votes
1answer
375 views
Issue with MongoDB Replication Set
I have 3 "CentOs 7" VM's in AWS environment in which I have setup MongoDB Repication Set using below command.
mongod --fork --logpath "/var/rs1/1.log" --replSet yogi --dbpath "/var/rs1/" --port 27017
...
0
votes
1answer
3k views
MongoDB Replication - “Failed with No route to host”
Hi,
Running MongoDB version 3.4.9 on two separate servers running Centos 7.
Trying to add a create a replica set but when ever I try to add a second server I get this error:
devshardcfgrs:PRIMARY> ...
0
votes
1answer
1k views
How to do PostgreSQL replication on CentOS 7?
Followed this guide to do the PostgreSQL replication:
https://www.digitalocean.com/community/tutorials/how-to-set-up-master-slave-replication-on-postgresql-on-an-ubuntu-12-04-vps
I didn't do this:
...
0
votes
1answer
5k views
Can't add another node from primary node with MongoDB replication set
On CentOS 7.
MongoDB version: 3.2.15
There are two nodes:
node1
node2
node1
/etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 node1
::1 localhost ...
6
votes
2answers
18k views
Can't run rs.initiate() when do mongodb replication set
Using CentOS 7.
MongoDB version: 3.2.15
Hostname: node1
Make directory:
mkdir /mongo-metadata
/etc/mongod.conf
# mongod.conf
# for documentation of all options, see:
# http://docs.mongodb.org/...
0
votes
1answer
409 views
Free space after removing ibdata1 file
My ibdata1 file was taking up a lot of space so I followed the steps explqined on How to shrink/purge ibdata1 file in MySQL
However after deleting the ibdata file and recreating the DB I'm still not ...
1
vote
1answer
3k views
Node unable to join a MariaDB Galera Cluster
I'm trying to setup a third node for my MariaDB cluster. I copied over the server.cnf file from my second node (which joins the cluster and can start its own cluster). The first two work fine using a ...
9
votes
3answers
19k views
Resolving port 5500 not free issue during Oracle 12c Release 2 Database Configuration Assistant installation on CentOS
Background
I am attempting to install Oracle 12c on CentOS 7 (deployed as a Hyper-V virtual machine) as outlined by this installation guide.
Problem
Everything with my installation goes well except ...
1
vote
1answer
377 views
How to avoid intermittent “duplicate entry” error on slave when replicating mysql.time_zone_transition?
Rarely, but intermittently, MariaDB 5.5 fails to replicate the timezone tables onto a completely new replica (instance creation is all automated, so there's no room for missing/changed steps). We ...
1
vote
1answer
4k views
ERROR! MySQL is running but PID file could not be found - MariaDB 10.1 - CentOS 7 - Fresh VM
So I'm having a little trouble with a BRAND new VM I just created today to test a Galera Cluster.
What I have done so far is...
Download and install the latest CentOS 7 in a VM.
Install open-vm-...
1
vote
2answers
5k views
Install mysql-workbench failed: Requires: proj, tinyxml, python-paramiko >= 1.15.1
I am installing mysql-workbench to migrate Postgres database to Mysql.
OS System Version: Red Hat Enterprise Linux Server release 7.2 (Maipo)
I am installing mysql-workbench and follow these ...
1
vote
1answer
77 views
How to debug trivial MariaDB query with simple execution plan which often runs really slowly?
The query (with literal ? for dynamic query goodness):
SELECT UNIX_TIMESTAMP(my_timestamp_field) AS my_name
FROM my_table
WHERE my_column=?
This query is one of the most common in my slow query ...
2
votes
2answers
18k views
How to properly change “innodb_buffer_pool_size” value for mysql?
I have following environment:
# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
# rpm -qa | grep ^mysql-community-
mysql-community-common-5.5.48-2.el7.x86_64
mysql-community-libs-5.5....
1
vote
1answer
2k views
Can't promote PostgreSQL warm standby server to start serving data
Scenario:
Two CentOS 7 machines, with ips 10.0.2.15 and 10.0.2.4
Both running PostgreSQL 9.4.6. First one (10.0.2.15) as master, and second one (10.0.2.4) as slave, not listening for clients (just ...
2
votes
1answer
2k views
postgresql 9.3: two instances on same port and two different ip adresses don't work
i'm setting up multiple instances of postgres 9.3 on the same machine (centos 7). I have 2 virtual ip addresses, one instance is bound to first address and second is bound to second one. Same ...
