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Quasar Scan user guide

Linux Agent Deployment

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Table of Contents

Automatic installation

1. Download the most recent tarball of the Quasar Agent from latest

2. Become root, or use sudo for the commands following

sudo -s

3. Make a directory called quasar inside /opt/

mkdir /opt/quasar

4. Copy the tarball into the /opt/quasar directory

cp /path/to/download.tar.gz /opt/quasar

5. Change to the /opt/quasar directory

cd /opt/quasar

6. Untar the tarball

tar -xzvf *.tar.gz

7. Make the install script executable

chmod +x /opt/quasar/agent/manual-install.sh

8. Run the install script

/opt/quasar/agent/manual-install.sh

Note: The installation script is in beta and may fail to recognize your distribution. If this occurs, please follow the manual installation instructions

Manual Installation (all distributions)

1. Download the most recent tarball of the Quasar Agent from latest

2. Become root, or use sudo for the commands following

sudo -s

3. Make a directory called quasar inside /opt/

mkdir /opt/quasar

4. Copy the tarball into the /opt/quasar directory

cp /path/to/download.tar.gz /opt/quasar

5. Change to the /opt/quasar directory

cd /opt/quasar

6. Untar the tarball

tar -xzvf *.tar.gz

7. Set permissions

chown -R root:root /opt/quasar
chmod -R 755 /opt/quasar

Note: It is recommended to run the service as root, with SELinux disabled.

8. Inside /ops/quasar/agent/local.cfg replace 127.0.0.1 with your servers Fully Qualified Domain Name, i.e

sed -i ‘s/127.0.0.1/example.com/g’ /ops/quasar/agent/local.cfg

9. For the next steps follow the appropriate instructions for your distribution

SystemD Distributions

  1. Copy the quasarscan.service file to system services.
cp /opt/quasar/agent/quasarscan.service /etc/systemd/system/

2. Make quasarscan executable

chmod +x /opt/quasar/agent/quasar*

3. Reload systemd’s daemons, start and enable the service.

systemctl daemon-reload
systemctl start quasarscan
systemctl enable quasarscan

SysV/JumpStart/Older Distributions

  1. Copy the init.d script to /etc/init.d/quasarscan
cp opt/quasar/agent/quasarscan-initd /etc/init.d/quasarscan

2. Make quasarscan-linux executable

chmod +x /opt/quasar/agent/quasar*

3. If you are running a RPM distribution

Enable the service by running chkconfig

update-rc.d quasarscan defaults
update-rc.d quasarscan enable

4. If you are running a DEB distribution

Enable the service by running update-rc.d

update-rc.d quasarscan defaults
update-rc.d quasarscan enable

5. Start the service

service quasarscan start

Testing

Test to ensure that the Quasar Agent is able to connect to the Quasar Server:

./quasarscan-linux commtest

If successful, it will return:Comm test: Success!
If unsuccessful, you will need to interrupt it with ctrl+c. Go back to the local.cfg file to ensure that you have entered the Quasar Server name / IP address correctly. If this is correct, verify that the required ports are allowed.

Check the Agent Has Started

By default, the agent logs to syslog. The agent will log the start up status and the default / configured folder locations (log, data, and tempspace) to syslog upon starting up. You should check that the logs are being generated correctly by running the command:

tail /var/log/messages