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This section covers installing Squirro on a supported Linux system, either Red Hat® Enterprise Linux® (RHEL) or its open source derivative CentOS Linux.

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Installation of the storage node happens with two separate packages. The first package installs the required Linux users and the second installs the services. Furthermore, we also need to explicitly install a few dependencies. Use the following two commands for the installation:

Java

Code Block
yum install jre

Squirro Storage Node

Code Block
languagebash
sudo su
yum install squirro-storage-node-users
yum install elasticsearch # in case of installing Squirro v2.6.0
yum install squirro-storage-node

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Installation of the Squirro cluster node happens with two separate packages. The first package installs the required Linux users and the second installs the services. Furthermore, we also need to explicitly install a few dependencies. Use the following commands for the installation:

Java

Squirro depends on JRE which is provided in the Squirro YUm repository itself. But this package has to be installed explicitly as none of the Squirro packages declare an explicit dependency on JRE. This is done to provide more flexibility in making Squirro work for various custom deployments where we do not control the version of Java installed on the server. Please execute the yum command below to install JRE

Code Block
yum install jre


Python

Squirro depends on Python, which is provided by a separate YUM repository. Execute the following commands to set up this repository. Please answer y for yes in response to the yum install command prompts.

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Note

You can choose to run MySql server and Redis servers remotely, i.e. not residing on the Squirro Cluster Node if you go through the trouble of setting up MySql and Redis Server installations with a specific configuration.

To set up Squirro with remote MySql server and Redis server "Backends", please create a readable file /etc/squirro/backends.ini with the content:

Code Block
is_mysql_server_remote = true
is_redis_server_remote = true


Next install the following prerequisites:

RHEL6 / Centos 6RHEL7 / Centos 7

n/a

The default MySQL variant for MySQL on RHEL7/CentOS7 is MariaDB.

Please execute the following before you proceed further:

Code Block
languagebash
echo "Installing Squirro dependency MariaDB"
yum install -y mariadb-server
yum install -y policycoreutils-devel
if [ -f /lib/systemd/system/mariadb.service ]; then
    systemctl stop mariadb
    mv /lib/systemd/system/{mariadb,mysqld}.service
    systemctl enable mysqld
    systemctl start mysqld
fi

Once we have released MariaDb RPM packages, the corresponding upgrade will undo this indirection.

Installation of the Squirro cluster node happens with two separate packages. The first package installs the required Linux users and the second installs the services. Use the following commands for the installation:

Code Block
languagebash
yum install squirro-cluster-node-users
yum install squirro-cluster-node

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