Moogsoft Enterprise - Online RPM pre-installation

Run the following command to create the Moogsoft Enterprise Yum repository file /etc/yum.repos.d/aiops.repo with the following contents. Replace the username and password in the baseurl property with your Moogsoft "speedy" Yum repository credentials.

cat > /etc/yum.repos.d/aiops.repo <<EOL
[moogsoft-aiops]
name=moogsoft-aiops
baseurl=https://<username>:<password>@speedy.moogsoft.com/repo/aiops/esr
enabled=1
gpgcheck=0
sslverify=0
EOL

Optional: GPG key validation of the RPMs

To validate the RPMs before installation:

Run the following command to create an Elasticsearch Yum repository as a new file /etc/yum.repos.d/elasticsearch.repo with the following contents:

cat > /etc/yum.repos.d/elasticsearch.repo <<EOL
[elasticsearch-6.x]
name=Elasticsearch repository for 6.x packages
baseurl=https://artifacts.elastic.co/packages/6.x/yum
gpgcheck=1
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
enabled=1
autorefresh=1
type=rpm-md
EOL

Install the RabbitMQ Erlang el7 package. For example:

yum -y install https://github.com/rabbitmq/erlang-rpm/releases/download/v23.3/erlang-23.3-2.el7.x86_64.rpm

Alternatively you can find the file at https://github.com/rabbitmq/erlang-rpm/releases/tag/v23.3.

Install the RabbitMQ Yum repository. For example:

curl -s https://packagecloud.io/install/repositories/rabbitmq/rabbitmq-server/script.rpm.sh | sudo bash

Verify that the /etc/yum.repos.d/rabbitmq_rabbitmq-server.repo file has been created.

Install the Elasticsearch public key. For example:

rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch

Run the following command to create an /etc/yum.repos.d/nginx.repo Nginx yum repo file:

cat > /etc/yum.repos.d/nginx.repo <<EOL
[nginx]
name=nginx repo
baseurl=http://nginx.org/packages/OS/OSRELEASE/\$basearch/
gpgcheck=0
enabled=1
EOL
OS_VERSION=$(cat /etc/system-release)
case "$OS_VERSION" in        
    CentOS*release\ 7* )                        
        sed -i -e 's/OS/centos/' -e 's/OSRELEASE/7/' /etc/yum.repos.d/nginx.repo;;        
    Red\ Hat*release\ 7* )                        
        sed -i -e 's/OS/rhel/' -e 's/OSRELEASE/7/' /etc/yum.repos.d/nginx.repo;;
esac

Refresh the local Yum repo cache and verify that the NSS and OpenSSL packages are up to date on your system. For example:

yum clean all
yum -y update nss openssl

Install Java 11:

VERSION=11.0.14.1.1; yum -y install java-11-openjdk-headless-${VERSION} java-11-openjdk-${VERSION} java-11-openjdk-devel-${VERSION}

Install the Extra Packages for Enterprise Linux (EPEL) Yum repository and enable the optional packages:

yum -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

Verify that the /etc/yum.repos.d/epel.repo file has been created.

If the Operating System is RHEL, enable the 'extras' repos:

subscription-manager repos --enable "rhel-*-optional-rpms" --enable "rhel-*-extras-rpms" --enable "rhel-ha-for-rhel-*-server-rpms"

The step after this one will result in the Percona RPMs being installed, however, it is possible that already installed packages can conflict with the Percona ones. Run the following command to identify if any already installed packages might conflict:

rpm -q --whatprovides mysql-libs

If this command returns any packages, remove them before continuing (yum remove <package_name>). Yum provides a warning if the removal of those packages will cause others which depend on them to be removed at the same time. If those packages cannot be removed, please contact Moogsoft Support - in this case a 'yum shell' script is needed to swap the dependencies 'in-place' without removing any other packages.

Download the Percona database installer on all servers that will house a database node. The script configures multiple nodes to run as a cluster. A single node is also supported. Run this command on an internet-connected host. If this host does not have internet access, download the script on a different host before copying it to this host. Enter your "speedy" Yum repo user credentials when prompted:

cat > get_percona_script.sh << _EOF_
#!/bin/bash
clear
echo "Please provide access credentials for the 'speedy' yum repository in order to download the Percona setup script"
echo
read -p "AIOps Repository Username: " AIOPS_USER
export AIOPS_USER
read -p "AIOps Repository Password: " -s AIOPS_PASS
export AIOPS_PASS
curl -L -O https://\$AIOPS_USER:\$AIOPS_PASS@speedy.moogsoft.com/repo/aiops/8.2.0/install_percona_nodes.sh 2>/dev/null
echo
_EOF_
bash get_percona_script.sh;

Set SELinux to permissive mode or disable it completely. For example, to set SELinux to permissive mode:

setenforce 0

If you want to disable SELinux at boot time, edit the file /etc/sysconfig/selinux.

To allow users to configure an ElasticSearch cluster, the vm.max_map_count property must be at least 262144. Check this property by running:

sysctl -n vm.max_map_count

If the value is less than 262144, add the following line to the end of the /etc/sysctl.conf file (requires root permissions):

vm.max_map_count = 262144

Run the following commands as root to set appropriate ulimits for the 'moogsoft' user which will run the application. Replace the 'moogsoft' user below as the user who will be installing and running the application⏤by default, it is 'moogsoft' for RPM deployments:

LIMITS_NPROC_CONF=/etc/security/limits.d/00_moogsoft.conf
sudo bash -c "echo \"moogsoft   hard   nproc   65536\" >> ${LIMITS_NPROC_CONF}";
sudo bash -c "echo \"moogsoft   hard   nofile   65536\" >> ${LIMITS_NPROC_CONF}";
sudo bash -c "echo \"moogsoft   soft   nproc   65536\" >> ${LIMITS_NPROC_CONF}";
sudo bash -c "echo \"moogsoft   soft   nofile   65536\" >> ${LIMITS_NPROC_CONF}";

Log out of the command terminal and back in to implement the changes.