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This sections lists all the configuration options in mender.conf. Some of
these options can also be modified using Yocto variables.
Specifies the location of the public key used to verify signed updates, and also enables signed-updates-only mode when it is set. If set the client will reject incorrectly signed updates, or updates without a signature. See also the section about signing and verification.
An integer that sets the number of seconds to wait between each inventory update. Note that the client may occasionally post its inventory more often if there has been recent activity on the device. See also the section about polling intervals.
An integer that sets the number of seconds to wait between each check for a new update. Note that the client may occasionally check more often if there has been recent activity on the device. See also the section about polling intervals.
An integer that specifies the number of seconds that an update module will be allowed to run, before it is considered hanging and killed. The process will first be sent a SIGTERM signal, and one minute later, if it has not exited, SIGKILL. The default is 4 hours.
An integer that sets the number of seconds to wait between each attempt to communicate with the server. Note that the client may attempt more often initially to enable rapid upgrades, but will gradually fall back to this value if the server is busy. See also the section about polling intervals.
The Linux device that contains root filesystem A. This is set by the build system based on Yocto configuration and rarely needs to be modified.
The Linux device that contains root filesystem B. This is set by the build system based on Yocto configuration and rarely needs to be modified.
An array of json objects of the format
[{ServerURL: "https://mender-server.com"}, {ServerURL: "https://mender-server2.com"}, ...], where ServerURL has the
same format as the plain ServerURL attribute paragraph. If
Servers entry is specified, the configuration cannot contain an additional
ServerURL entry in the top level of the json configuration. Upon an unserved
request (4XX/5XX-response codes) the client will attempt the next server on the
list in the given order.
The server URL which is used as the basis for API requests. This should be set
to the server that runs the Mender server services. It should include the whole
URL, including https:// and a trailing slash.
NOTE: This entry conflicts with Servers attribute, i.e. only one
of these entries are accepted.
The location of the public certificate of the server, if any. If this certificate is missing, or the one presented by the server doesn't match the one specified in this setting, the server certificate will be validated using standard certificate trust chains.
The timeout before a state script that previously returned the special retry return code (21), will be run again.
Note: Before mender v2.0.0 release, this option used to be called StateScriptRetryTimeoutSeconds.
The interval for which the script is allowed to keep retrying. After this interval has expired, another retry attempt will be treated as a failure and if possible, the update will be rolled back.
Note: Before mender v2.0.0 release, this option used to be called StateScriptRetryIntervalSeconds.
The number of seconds to wait for any state script to terminate. If a script exceeds this running time, its process group will be killed and Mender will continue, treating the script as having failed. See also the section about state scripts.
A token which identifies which tenant a device belongs to. This is only relevant if using Hosted Mender.
The location where deployment logs will be written. This must be on a persistent partition to avoid it losing the logs due to an root filesystem update.
The location where to store the device_type. This must be on a persistent
partition to avoid it accidentally being changed due to an root filesystem
update. The default location is /var/lib/mender/device_type