Managing ICAgent

Upgrading ICAgent

To deliver a better collection experience, LTS regularly upgrades ICAgent. When LTS prompts you that a new ICAgent version is available, you can follow the directions here to obtain the latest version.

For Windows hosts, you must uninstall ICAgent before installing a new version.

1. Log in to the LTS console and choose Host Management > Hosts in the navigation pane.
2. Select Intra-Region Hosts or Extra-Region Hosts. When the system prompts you that a new ICAgent version is available, select one or more check boxes of hosts where ICAgent is to be upgraded, and click Upgrade ICAgent.
   Figure 1 Upgrading ICAgent on an intra-region host
   

3. Click the CCE Cluster tab. Search for and select the cluster whose ICAgent is to be upgraded, and click Upgrade ICAgent.
   Figure 2 Upgrading ICAgent on a CCE cluster
   
   

   • You need to create a CCE cluster before you can collect container standards and send them to AOM.
   • To disable the function of exporting container standards to AOM, you need to have ICAgent 5.12.133 or later.
   • If you create a CCE cluster for the first time, ICAgent will be installed on hosts in the cluster by default, and logs will be reported to AOM. Output to AOM is enabled by default. To report logs to LTS, disable Output to AOM before upgrading ICAgent. You are advised to choose Log Ingestion > Cloud Service > Cloud Container Engine (CCE) to collect container data and output it to LTS instead of AOM.
   • CCE cluster ID (ClusterID): Each cluster has a fixed ID.
   • When ICAgent is upgraded, LTS creates log groups and host groups for your CCE cluster. The name of the log group and host group is k8s-log-{ClusterID}. You can create an ingestion configuration (Cloud Services > Cloud Container Engine (CCE)) to add logs of the current CCE cluster to the log group.
   • If the ICAgent is not installed on hosts in a cluster or the ICAgent version is too early, click Upgrade ICAgent to install the ICAgent on all hosts in the cluster.

4. In the displayed dialog box, click OK.

   The upgrade begins. This process takes about a minute. When the ICAgent status changes from Upgrading to Running, the ICAgent upgrade has completed.

   

   If the ICAgent is abnormal after the upgrade or if the upgrade fails, log in to the host and run the installation command. ICAgent can be re-installed on top of itself.

Uninstalling ICAgent

If ICAgent is uninstalled from a host, log collection will be affected. Exercise caution when performing this operation.

Only ICAgent installed on Linux hosts can be uninstalled from the Host Management page of the LTS console. To uninstall ICAgent from a Windows host, go to \ICProbeAgent\bin\manual\win in the directory where the ICAgent installation package was decompressed, and double-click the script named uninstall.bat. If message ICAgent uninstall success is displayed, the uninstallation is successful.

Uninstalling ICAgent does not delete the installation files. You need to delete them manually if necessary.

You can uninstall ICAgent using either of the following methods:

• Uninstalling ICAgent on the console: applies to the scenario where ICAgent has been successfully installed.
  1. Log in to the LTS console and choose Host Management > Hosts in the navigation pane.
  2. Select one or more hosts where ICAgent is to be uninstalled and click Uninstall ICAgent.
  3. In the displayed dialog box, click OK.

     The uninstallation begins. This process takes about a minute.

     The hosts with ICAgent uninstalled will be removed from the host list.

     

     To reinstall ICAgent, wait for 5 minutes after it is uninstalled. Otherwise, the ICAgent may be automatically uninstalled again.

• Logging in to the host to uninstall ICAgent: applies to the scenario where ICAgent fails to be installed.
  1. Log in to a host where ICAgent is to be uninstalled as user root.
  2. Run the following command:

     bash /opt/oss/servicemgr/ICAgent/bin/manual/uninstall.sh

     If the message ICAgent uninstall success is displayed, the uninstallation has completed.

• Remotely uninstalling ICAgent: applies to the scenario where the ICAgent has been successfully installed and needs to be remotely uninstalled.

  You can uninstall ICAgent on one host remotely from another host.

  1. Run the following command on the host where ICAgent has been installed. x.x.x.x indicates the IP address of the host you want to uninstall ICAgent from.

     bash /opt/oss/servicemgr/ICAgent/bin/remoteUninstall/remote_uninstall.sh -ip x.x.x.x

  2. Enter the password for user root of the host when prompted.
     

     • If the Expect tool is installed on the host that has ICAgent installed, the ICAgent uninstallation should be able to complete without prompting you for a password. Otherwise, enter the password as prompted.
     • Ensure that user root can run SSH or SCP commands on the host where ICAgent has been installed to communicate with the remote host.
     • If the message ICAgent uninstall success is displayed, the uninstallation has completed.
• Batch uninstalling ICAgent: applies to the scenario where the ICAgent has been installed and needs to be uninstalled in batches.

  If ICAgent has been installed on a host and the ICAgent installation package ICProbeAgent.tar.gz is in the /opt/ICAgent/ directory of the host, you can use this method to uninstall ICAgent from multiple hosts at once.

  

  The hosts must all belong to the same VPC and be on the same subnet.

  Prerequisites

  The IP addresses and passwords of all hosts to uninstall ICAgent have been collected, sorted in the iplist.cfg file, and uploaded to the /opt/ICAgent/ directory on the host that has ICAgent installed. Each IP address and password in the iplist.cfg file must be separated by a space. Examples:

  192.168.0.109 Password (Replace the IP address and password with the actual ones)

  192.168.0.39 Password (Replace the IP address and password with the actual ones)

  

  • The iplist.cfg file contains sensitive information. You are advised to clear it after using it.

  • If all hosts share a password, list only IP addresses in the iplist.cfg file and enter the password manually during execution. If one of the hosts uses a different password, type the password behind its IP address.
  1. Run the following command on the host that has ICAgent installed:

     bash /opt/oss/servicemgr/ICAgent/bin/remoteUninstall/remote_uninstall.sh -batchModeConfig /opt/ICAgent/iplist.cfg

     Enter the default password for user root of the hosts to uninstall ICAgent. If the passwords of all hosts have been configured in the iplist.cfg file, press Enter to skip this step.

     batch uninstall begin
     Please input default passwd:
     send cmd to 192.168.0.109
     send cmd to 192.168.0.39
     2 tasks running, please wait...
     End of uninstall agent: 192.168.0.109
     End of uninstall agent: 192.168.0.39
     All hosts uninstall icagent finish.

     If message All hosts uninstall icagent finish. is displayed, the batch uninstallation has completed.

  2. Choose Host Management > Hosts in the navigation pane of the LTS console to view the ICAgent status.

Checking the ICAgent Status

In the navigation pane, choose Host Management > Hosts. Check the ICAgent status of the target host. The following table lists the ICAgent statuses.

Checking the ICAgent Version Description

In the navigation pane, choose Host Management > Hosts. Check the ICAgent version of the target host. The following table lists the ICAgent versions.