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(Amazon Linux) MySQL stops working on EC2 reboot


(Amazon Linux) MySQL stops working on EC2 reboot

By : romaingar
Date : October 17 2020, 08:10 AM
this will help Just re-install MySQL. You won't lose your databases, they will still be in tact and can be accessed by the same username/passwords as before:
This works for Amazon Linux:
code :
$ sudo yum -y remove mysql-server
$ wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm 
$ sudo yum localinstall mysql57-community-release-el7-8.noarch.rpm 
$ sudo yum install mysql-community-server 
$ sudo service mysqld start


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mysqld stops unexpectedly on t2.micro Amazon Linux instance

mysqld stops unexpectedly on t2.micro Amazon Linux instance


By : Beni Ka
Date : March 29 2020, 07:55 AM
hop of those help? I'm running an t2.micro Amazon Linux instance on EC2. I installed LAMP and Wordpress on it. , This is a memory problem:
code :
/usr/bin/mysqld_safe: line 165: /usr/bin/nohup: Cannot allocate memory
Direct-LVM stops working after reboot

Direct-LVM stops working after reboot


By : Teodora Dima
Date : October 25 2020, 07:18 PM
around this issue Fortunately, someone in Docker Community understood the problem and shared their solution with. The solution is: https://github.com/projectatomic/docker-storage-setup .
code :
apt install -y thin-provisioning-tools
mkdir /usr/lib/docker-storage-setup
mkdir /etc/sysconfig
git clone https://github.com/projectatomic/docker-storage-setup.git     /opt/docker-storage-setup
cp /opt/docker-storage-setup/docker-storage-setup.sh /usr/bin/docker-storage-setup
cp /opt/docker-storage-setup/docker-storage-setup.service /lib/systemd/system/docker-storage-setup.service
cp /opt/docker-storage-setup/libdss.sh /usr/lib/docker-storage-setup
VG=docker DATA_SIZE=95%FREE STORAGE_DRIVER=devicemapper /opt/docker-storage-setup/docker-storage-setup.sh

systemctl enable docker-storage-setup
lvrename docker/thinpool docker/docker-pool
Spring Boot project in IntelliJ IDEA stops working after reboot

Spring Boot project in IntelliJ IDEA stops working after reboot


By : lops
Date : March 29 2020, 07:55 AM
may help you . Firstly, rather than adding the apache phoenix client (or any other dependencies) manually you should add them to your maven pom.xml, so maven resolves the dependency at build time. If your project has dependencies which maven is failing to resolve this is a separate issue which you need to resolve, but adding them manually is bad practice for a number of reasons.
Once you have added the phoenix client as a dependency, you need to explicitly exclude slf4j-log4j12 and log4j as part of the dependency declaration. The XML should look something like this:
code :
    <dependency>
        <groupId>org.apache.phoenix</groupId>
        <artifactId>phoenix-core</artifactId>
        <version>4.13.1-HBase-1.3</version>
        <exclusions>
            <exclusion>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-log4j12</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
kubectl stops working after reboot

kubectl stops working after reboot


By : Hazem Hegazy
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , So it turns out that it's normal that Kubernetes stops working after a reboot. Need to write a script that runs at boot time and that automates the installation steps, like kubeadm reset and all the following initialisation steps.
Mongo 3.4 on Amazon Linux - Maximum simultaneous connections stops at 4077

Mongo 3.4 on Amazon Linux - Maximum simultaneous connections stops at 4077


By : Ayoub Kachkach
Date : March 29 2020, 07:55 AM
wish helps you
I can see that the current open connections is 4077 and new connections are getting rejected because it fails to create threads for new connection requests.
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