Reinstalling Collector

This article describes the steps to reinstall a Collector onto the same device. Reinstalling a Collector requires you to shut down the Collector and its services, download and install a new Collector, and remove the old Collector.

If you are reinstalling the Collector onto a different device (or replacing a collector), we recommend that you download and install a new Collector onto the new device and then transfer the monitored resources from the old Collector to the new Collector. For more information, see Moving Collector to Another Machine.

Re-downloading Collector

When reinstalling the Collector, you may re-download the Collector’s installer file from its listing:

1. In LogicMonitor, navigate to Settings > Collectors.
2. Under the Collectors tab, select the Collector that you want to redownload.  
3. Select the  More and then select Download Collector.
   
   The Download Collector page displays.
   
4. Select the OS, version, and size of the Collector.
5. Download and install the Collector.
6. Select Finish.

Reinstalling Windows Collector

1. (Optional) Add the Collector you want to reinstall into SDT to prevent unwanted alerts during this process.
   For more information, see Adding SDT to Collector.
2. On the local Collector machine, remove LogicMonitor Collector from the Control Panel\Add or Remove Programs menu.
3. Rename the directory C:\Program Files\LogicMonitor to C:\Program Files\LogicMonitor_OLD.
4. In services.msc, verify that both logicmonitor-watchdog and logicmonitor-agent are not present.
   1. If the services still exist, open cmd with admin privileges and run the following commands to remove them:

sc delete logicmonitor-watchdog
sc delete logicmonitor-agent

2. Restart the Collector machine and verify that the services is removed.

5. Re-download the Collector installer executable file from the list in Settings > Collectors.
   For more information, see Re-downloading Collector.
6. Run the installer file.
   LogicMonitor recommends to use the installation wizard.
7. If there are logs or jar files in the old Collector install directory, confirm that they are no longer required or have been backed up if needed.
8. Delete the old collector directory: C:\Program Files\LogicMonitor_OLD

Reinstalling Linux Collector

1. (Optional) Add the Collector you want to reinstall into SDT to prevent unwanted alerts during this process.
   For more information, see Adding SDT to Collector.
2. As a root user on the local Collector machine, run the sbshutdown script to stop the Collector and Collector Watchdog services.
   By default, this script is located in /usr/local/logicmonitor/agent/bin.

[root@collector-host ~]# cd /usr/local/logicmonitor/agent/bin/
[root@collector-host bin]# ./sbshutdown

3. Uninstall the Collector by running the uninstall script or manually removing the Collector directory and all its contents:
   1. (Recommended) Uninstall the Collector using uninstall.sh:

[root@collector-host bin]# ./uninstall.sh

2. Remove the LogicMonitor Collector directory (user/local/logicmonitor) and all its contents using the command:

[root@collector-host bin]# rm -rf usr/local/logicmonitor

If there are symbolic links for logicmonitor.collector and logicmonitor.watchdog, those must be removed from /etc/init.d or /etc/rc.d/init.d.

4. Change to the directory where you want to install the Collector.
5. Re-download the Collector installer executable file from the list in Settings > Collectors.
   For more information, see Re-downloading Collector.
   If you are working from a command line, copy the curl or wget commands to download the Collector on the host machine.
6. Change the permissions for the installer so that it is executable and run it:

[root@collector-host ~]# chmod +x LogicmonitorCollector64_[COLLECTOR_ID].bin
[root@collector-host ~]# ./LogicmonitorBootstrap64_[COLLECTOR_ID].bin

7. When the installation completes, verify that the Collector and Watchdog services are running:

[root@collector-host bin]# ./logicmonitor-watchdog status
[root@collector-host bin]# ./logicmonitor-agent status