Install MID-less Agent Client Collector manually in a Linux environment

  • リリースバージョン: Australia
  • 更新日 2026年03月12日
  • 所要時間：12分

    • Install MID-less Agent Client Collector manually on a Linux machine to enable sending data from the agent to the instance through the cloud. Sending information through the cloud allows the MID Server to be used for more persistent resources.

    始める前に

    • Install the ITOM Cloud Services Core (sn_itom_cloud_svc) plugin.
    • Onboard your instance to use ITOM Cloud Services. For details, contact Customer Support.
    • Configure an agent registration key. For details, see Configure an agent registration key.
    • Role required: agent_client_collector_admin

    このタスクについて

    For details on sending data through the cloud in a MID-less deployment, see DEX Architecture.

    手順

    1. Download the relevant installation package.
      1. Navigate to > Agent Client Collector > Deployment > Agent Downloads.
      2. Download the relevant .rpm or .deb installation file.
      3. Download the relevant signature files to validate the installation files.
    2. オプション: Verify the package signature.
      1. Extract the installation file (if it is compressed) by running the following command:
        unzip agent_client-collector-<version_number>-x86_64-rpm-rpm.zip
      2. Validate the installation file signature by running the indicated commands.
        • On an RPM-based system:
          openssl dgst -sha256 -verify {<ServiceNow DGST pem key>} -signature {<signature file>} agent-client-collector-<version number>-x86_64.rpm

          Where <ServiceNow DGST pem key> is the .pem file extracted from the .zip file, and <signature file> is the .bin file extracted from the .zip file.

          For example: 
          $ curl -sLO https://install.service-now.com/glide/distribution/builds/package/app-signed/agent-client-collector-3.0.0-x86_64.rpm
$ curl -sLO https://install.service-now.com/glide/distribution/builds/package/app-signed/agent-client-collector-3.0.0-x86_64-rpm-rpm.zip
$ unzip agent-client-collector-3.0.0-x86_64-rpm-rpm.zip
Archive: agent-client-collector-3.0.0-x86_64-rpm-rpm.zip
inflating: ServiceNow_Digicert_DGST.pem
extracting: agent-client-collector-3.0.0-x86_64.bin
$ openssl dgst -sha256 -verify ServiceNow_Digicert_DGST.pem -signature agent-client-collector-3.0.0-x86_64.bin agent-client-collector-3.0.0-x86_64.rpm
Verified OK
          注:
          Each command must appear on a single line.
        • On a Debian-based system:

          gpg --import ServiceNow_Digicert_Public.gpg

          sudo gpg --verify agent-client-collector-<version number>-<distro>_amd64.deb

          For example:
          $ curl -sLO https://install.service-now.com/glide/distribution/builds/package/app-signed/agent-client-collector-3.0.0-debian-9_amd64.deb
$ curl -sLO https://install.service-now.com/glide/distribution/builds/package/app-signed/agent-client-collector-3.0.0-debian-9_amd64-deb-deb.zip
$ unzip agent-client-collector-3.0.0-debian-9_amd64-deb-deb.zip
Archive: agent-client-collector-3.0.0-debian-9_amd64-deb-deb.zip
extracting: ServiceNow_Digicert_Public.gpg
$ gpg --import ServiceNow_Digicert_Public.gpg
gpg: /home/admin/.gnupg/trustdb.gpg: trustdb created
gpg: key 985DD52C6A0ABB45: public key "ServiceNow, Inc. (Signing) <seceng@servicenow.com>"
imported
gpg: Total number processed: 1
gpg: imported: 1
$ dpkg-sig --verify agent-client-collector-3.0.0-debian-9_amd64.deb
Processing agent-client-collector-3.0.0-debian-9_amd64.deb...
GOODSIG _gpgbuilder 9B928FB49771DF6C047430DD985DD52C6A0ABB45 1665054068
          注:
          Each command must appear on a single line.
    3. Install the Agent Client Collector package using the package manager associated with Linux distribution.
      OS Command
      RHEL-based yum / dnf localinstall
      SLES zypper install
      Debian-based apt-get install

      Alternatively, if these commands are not configured correctly, you can use the core commands that are configured to run with the package manager commands.

      • RPM-based system: # rpm -vi agent-client-collector-<version number>-x86_64.rpm
      • Debian-based system: # dpkg -i agent-client-collector-<version number>-<distro>_amd64.deb

      Verify that the package commands are configured correctly with your system administrator.

      注:
      Some file systems may have restrictions enabled; for example, /var/ may be mounted with a noexec flag. Because the agent must execute Agent Client Collector plugins that are normally store in the /var/cache directory, you must deploy the application into specific folders by customizing the installation paths using the --relocate option as an .rpm parameter.

      For example: rpm -i --relocate /var/cache=/opt/cache agent-client-collector-<version_number>-x86_64.rpm

      The following paths can be relocated:
      Path Notes
      /etc When updating, you must also update the allow-list parameter in the acc.yml file with the new path.
      /usr/share N/A
      /var/cache Updating the /var directory retains all /var subdirectories, nested under the new directory.
      /var/log
      /var/run
      /var
      Review the paths in /usr/lib/systemd/system/acc.service to ensure that they appear as expected.
    4. Run the relevant package upgrade command, based on the cpu your machine runs with:
      • Intel cpu: 
        sudo installer -pkg agent-client-collector-<version number>-macos_x64.pkg -target /
      • Apple silicon cpu:
        sudo installer -pkg agent-client-collector-<version number>-macos_arm64.pkg -target /

      This command also backs up and restores the agent-id and configuration files before upgrading.

    5. In the acc.yml configuration file:
      1. Set the following parameters:
        Parameter Value
        backend-url "<gateway URL>"
        connect-without-mid true
        instance-url "<instance URL>"
        registration-key "<regsitration-key>"
        insecure-skip-tls-verify false
      2. Comment out the api-key parameter.
    6. Save the configuration file.
    7. Configure sudoers.

      Configuration is typically automated by your Linux sysadmin. To configure manually if you want to ensure correctness before full configuration, run the following.

      # visudo -f /etc/sudoers.d/01_servicenow
User_Alias ACC_USERS = servicenow
Cmnd_Alias ACC_CMD = /usr/sbin/dmidecode -s baseboard-serial-number,/usr/sbin/dmidecode -s chassis-serial-number,/usr/sbin/dmidecode -s system-serial-number,/usr/sbin/dmidecode -s system-uuid,/usr/sbin/ss -tanp
ACC_USERS ALL = (root) NOPASSWD:ACC_CMD
Defaults:ACC_USERS !requiretty
    8. Configure the agent to run as a service.
      1. Safeguard resource consumption by adding the indicated values to the /usr/lib/systemd/system/acc.service file.
        • CPUShares=128
        • CPUQuota=10%
        • MemoryLimit=192M
        • BlockIOWeight=10
        • LimitNICE=15

        For example:

        # vi /usr/lib/systemd/system/acc.service
[Unit]
Description=Agent-Now acc
After=network-online.target
[Service]
Environment=AGENT_ROOT=/usr/share
Environment=AGENT_CACHE_ROOT=/var/cache
Environment=AGENT_CONFIG_ROOT=/etc
Environment=AGENT_LOG_ROOT=/var/log
Environment=AGENT_RUN_ROOT=/var/run
Environment=RUBYOPT=-Eutf-8
User=servicenow
Group=servicenow
ExecStart=/usr/share/servicenow/agent-client-collector/bin/acc-service start acc
KillMode=process
Restart=on-failure
RestartSec=1min
CPUShares=128
CPUQuota=10%
MemoryLimit=192M
BlockIOWeight=10
LimitNICE=+15
[Install]
WantedBy=network-online.target
      2. Run the reload daemon command If you modified the service file after enabling the acc service.

        # systemctl daemon-reload

      3. Enable and start the service by running the following commands.

        # systemctl enable acc

        # systemctl start acc