Environment variables post v1.38

Telegraf
1

Hello,

We are upgrading from v1.36 to v1.40. This includes the “Strict handling of environment variables”

I’m facing trouble using bool and lists environment variables in the configuration-file after this change.

In the “inputs.x509_cert”-input there is an option for exclude_root_certs that is a bool, but I’m not able to make it work.

# cat -n /etc/telegraf/telegraf.conf | grep CERT_MONITOR_INPUTS_X509_CERT_EXCLUDE_ROOT_CERTS -C5
    69
    70  #
    71  # Monitor for the proxy
    72  [[inputs.x509_cert]]
    73    sources = ["${CERT_MONITOR_INPUTS_X509_CERT_SOURCES}"]
    74    exclude_root_certs = ${CERT_MONITOR_INPUTS_X509_CERT_EXCLUDE_ROOT_CERTS}
    75    timeout = "2s"
    76    server_name = "${CERT_MONITOR_INPUTS_X509_CERT_SERVER_NAME}"

E! loading config file /etc/telegraf/telegraf.conf failed: error parsing data: line 74: invalid TOML syntax

# env | grep CERT_MONITOR_INPUTS_X509_CERT_EXCLUDE_ROOT_CERTS
CERT_MONITOR_INPUTS_X509_CERT_EXCLUDE_ROOT_CERTS=false

I also had trouble with the list on line 73, but I just made it a string in the variable.

Telegraf Environment Variable Handling | InfluxData This only covers the “Why?” and strings.

Is there any examples of how to get non strings to work with this change?

2

The same goes for int.

E! loading config file /etc/telegraf/telegraf.conf failed: error parsing data: line 77: invalid TOML syntax

# cat -n /etc/telegraf/telegraf.conf
77    metric_version = ${PROMETHEUS_MONITOR_METRIC_VERSION}

# env | grep PROMETHEUS_MONITOR_METRIC_VERSION
PROMETHEUS_MONITOR_METRIC_VERSION=1