SYSTEMD-IMDSD@.SERVICE(8) systemd-imdsd@.service SYSTEMD-IMDSD@.SERVICE(8) (NAME) systemd-imdsd@.service, systemd-imdsd, systemd-imdsd.socket, systemd- imdsd-early-network.service - (IMDS) (SYNOPSIS) systemd-imdsd@.service systemd-imdsd.socket systemd-imdsd-early-network.service /usr/lib/systemd/systemd-imdsd (DESCRIPTION) systemd-imdsd@.service IMDS ( Instance Metadata Service ) . IPC Varlink /run/systemd/io.systemd.InstanceMetadata IMDS . systemd-imds-early-network.service systemd.network(5) systemd- networkd.service(8) (endpoint) IMDS . systemd-imds(1) . (KERNEL COMMAND LINE OPTIONS) IMDS hwdb(7) : systemd.imds.network= "off" "locked" "unlocked" . IMDS . "off" IMDS . "locked" IMDS "prohibit" () systemd-imdsd@.service . "unlocked" () "prohibit" IMDS . 261. systemd.imds.vendor= (cloud vendor) . : systemd.imds.vendor=foobarcloud 261. systemd.imds.token_url= IMDS (bearer token) (URL) . 261. systemd.imds.refresh_header_name= HTTP ( ":") TTL ( ) HTTP . systemd.imds.token_url= . 261. systemd.imds.data_url= (URL) IMDS ( "endpoint" IMDS) . URL . URL "/" . URL URL "" IMDS systemd.imds.data_url_suffix= . "" (well-known) IMDS systemd.imds.key=* . : systemd.imds.data_url=http://169.254.169.254/metadata 261. systemd.imds.data_url_suffix= URL ( "" IMDS URL ) . : systemd.imds.data_url_suffix=?api-version=2025-04-07&format=text 261. systemd.imds.token_header_name= HTTP ( ":") URL ( ) . systemd.imds.token_url= . 261. systemd.imds.extra_header= HTTP ( ":") HTTP . . : systemd.imds.extra_header=Metadata:true 261. systemd.imds.address_ipv4= IPv4 IMDS . IP systemd.imds.data_url= ( IPv4) IP . : systemd.imds.address_ipv4=169.254.169.254 261. systemd.imds.address_ipv6= IPv6 IMDS . IP systemd.imds.data_url= ( IPv6) IP . 261. systemd.imds.key.hostname=, systemd.imds.key.region=, systemd.imds.key.zone=, systemd.imds.key.ipv4_public=, systemd.imds.key.ipv6_public=, systemd.imds.key.ssh_key=, systemd.imds.key.userdata=, systemd.imds.key.userdata_base=, systemd.imds.key.userdata_base64= URL ( ) "" (well-known) . "/" . (plain text) . "userdata" ( ) : systemd.imds.key.userdata_base= IMDS userdata URL . systemd.imds.key.userdata= userdata . systemd.imds.key.userdata_base64= userdata Base64 . : systemd.imds.key.hostname=/instance/compute/osProfile/computerName 261. (CREDENTIALS) systemd-imdsd@.service ImportCredential=/LoadCredential=/SetCredential= ( systemd.exec(5) ). : imds.vendor, imds.vendor_token, imds.refresh_header_name, imds.data_url, imds.data_url_suffix, imds.token_header_name, imds.extra_header, imds.extra_header2, imds.extra_header3, imds.extra_header..., imds.address_ipv4, imds.address_ipv6, imds.key_hostname, imds.key_region, imds.key_zone, imds.key_ipv4_public, imds.key_ipv6_public, imds.key_ssh_key, imds.key_userdata, imds.key_userdata_base, imds.key_userdata_base64 IMDS. . 261. (SEE ALSO) systemd(1), systemd-imds(1), systemd-imds-generator(8), systemd- networkd.service(8) systemd 261.2 SYSTEMD-IMDSD@.SERVICE(8)