This section covers installing Squirro on a supported Linux system, either Red Hat® Enterprise Linux® (RHEL) or its open source derivative CentOS Linux.
...
| TCP Port | Usage | Open for |
|---|
| 81 | Web access | - All Squirro nodes
- Optionally for all clients if HTTPS access (port 443) is not desired
|
| 111 | Gluster | - All Squirro nodes (in multi-node setups)
|
| 443 | Web access (SSL-protected) | |
| 2181 | Zookeeper | |
| 2888 | Zookeeper node discovery | - All Squirro nodes (in multi-node setups)
|
| 3306 | MySql | |
| 3888 | Zookeeper node discovery | - All Squirro nodes (in multi-node setups)
|
| 6379 | Redis (storage) | |
| 6380 | Redis (cache) | |
| 24007 | Gluster | - All Squirro nodes (in multi-node setups)
|
| 49152+ (one per node, e.g. range 49152 – 49155 for a cluster of three nodes) | Gluster nodes | - All Squirro nodes (in multi-node setups)
|
...
The following is an example for RHEL 6.5, though the username and password for the YUM repository have not been filled in:
| Code Block |
|---|
| language | text |
|---|
| title | /etc/yum.repos.d/squirro.repo |
|---|
|
[squirro-stable]
name=Squirro - Red Hat Enterprise Linux 6 - Stable
baseurl=https://<user name>:<password>@mirror.squirro.net/rhel/6/stable/$basearch/<specific version or 'latest'>/
enabled=1
gpgkey=https://mirror.squirro.net/rhel/RPM-GPG-KEY-squirro-stable
gpgcheck=1
sslverify=1
metadata_expire=300 |
Squirro depends on Python, which is provided by a separate YUM repository. Execute the following commands to set up this repository. Please answer y for yes in response to the yum install command prompts.
| RHEL | CentOS |
|---|
| Code Block |
|---|
| language | text |
|---|
| title | /etc/yum.repos.d/squirro.repo |
|---|
| [squirro-stable]
name=Squirro - Red Hat Enterprise Linux 6 - Stable
baseurl=https://<user name>:<password>@mirror.squirro.net/rhel/6/stable/$basearch/<specific version or 'latest'>/
enabled=1
gpgkey=https://mirror.squirro.net/rhel/RPM-GPG-KEY-squirro-stable
gpgcheck=1
sslverify=1
metadata_expire=300 |
|
| Code Block |
|---|
| language | text |
|---|
| title | /etc/yum.repos.d/squirro.repo |
|---|
| [squirro-stable]
name=Squirro - Centos Linux 7 - Stable
baseurl=https://<user name>:<password>@mirror.squirro.net/centos/7/stable/$basearch/<specific version or 'latest'>/
enabled=1
gpgkey=https://mirror.squirro.net/centos/RPM-GPG-KEY-squirro-stable
gpgcheck=1
sslverify=1
metadata_expire=300 |
|
Storage Node Installation
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 |
|---|
|
[root@localhost ~]#sudo su
yum install squirro-storage-node-users
[root@localhost ~]# yum install elasticsearch # in case of installing Squirro v2.6.0 or higher
yum install squirro-storage-node |
...
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 (Installation from Squirro repository - "Online")
If installing from the Squirro repository, please follow the steps below:
| Code Block |
|---|
yum install python27-python |
Python (Installation from Squirro RPMs - "Offline")
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.
| RHEL6 | RHEL7 | Centos |
|---|
| Code Block |
|---|
| [root]# yum install yum-utils
[root]#
yum-config-manager --enable rhel-server-rhscl-6-rpms
[root]# yum install python27 |
|
| Code Block |
|---|
| [root]# yum install yum-utils
[root]#
yum-config-manager --enable rhel-server-rhscl-7-rpms
[root]#
yum install python27 |
|
| Code Block |
|---|
| [root]# yum install centos-release-SCL
[root]#scl
yum install python27 |
|
EPEL and libgomp
| RHEL6 / CentOS 6 | RHEL7 / CentOS 7 |
|---|
|
...
yum install wget
wget http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
|
|
...
yum localinstall epel-release-6-8.noarch.rpm
yum install libgomp |
|
| Code Block |
|---|
| yum install wget
wget https://dl.fedoraproject.org/pub/epel/7/x86_64/Packages/e/epel-release-7-11.noarch.rpm
yum localinstall epel-release- |
|
...
...
Squirro Cluster node
| 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 6 | RHEL7 / Centos 7 |
|---|
n/a | The default MySQL variant for MySQL on RHEL7/CentOS7 is MariaDB. Please execute the following before you proceed further: |
...
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 |
|---|
|
yum install squirro-cluster-node-users
[root@localhost ~]#
yum install squirro-cluster-node |
If the Storage and Cluster node are not the same physical machine, then you need now to adjust the file /etc/nginx/conf.d/upstream-elastic.inc to point to the IP or Hostnames of the storage node
...
(s).
Examples:
| Single Server both roles | Dedicated Storage Node | Multiple Storage Nodes |
|---|
| Code Block |
|---|
upstream elastic {
server 127.0.0.1:9200;
keepalive 32;
} |
|
| Code Block |
|---|
upstream elastic {
server 192.168.0.20:9200;
keepalive 32;
} |
|
| Code Block |
|---|
upstream elastic {
server 192.168.0.20:9200;
server 192.168.0.21:9200;
server 192.168.0.22:9200;
keepalive 32;
} |
|
If changes have been made to this file, reload the nginx configuration
| Code Block |
|---|
|
service nginx reload |
| Note |
|---|
If you have chosen to rely on remote MySql and/or Redis server installations, please follow the steps on Setup on Linux with Remote MySql and Redis Servers. |
Finally start the Squirro Services
| RHEL6 / Centos 6 | RHEL7 / Centos 7 |
|---|
| Code Block |
|---|
| service monit start
monit -g all-manual start |
|
| Code Block |
|---|
| echo "Starting Squirro services"
cd /lib/systemd/system
for service in $(ls sq*d.service); do
echo "Starting $service"
systemctl restart $service
done |
| Note |
|---|
We are deprecating the use of monit and have removed monit from our centos 7 installations already. |
|