I ran into the same issue - wanted to add the textfile.directory to the
node_exporter using "extra_container_args" - and it failed just as you
describe. It appears that those args get applied to the container command
(podman or docker) and not to the actual service in the container. Not sure if
that is intentional or not, but it would be nice to be able to add args to the
process IN the container, especially for the node_exporter so that additional
data can be collected.
________________________________
From: Lee Carney <lee.car...@globalrelay.net>
Sent: Thursday, October 27, 2022 10:27 AM
To: ceph-users@ceph.io <ceph-users@ceph.io>
Subject: [ceph-users] cephadm node-exporter extra_container_args for
textfile_collector
Has anyone had success in using cephadm to add extra_container_args onto the
node-exporter config? For example changing the collector config.
I am trying and failing using the following:
1. Create ne.yml
service_type: node-exporter
service_name: node-exporter
placement:
host_pattern: '*'
extra_container_args:
- --collector.textfile.directory=/var/lib/node_exporter/textfile_collector
2. cephadm shell --mount ne.yml:/var/lib/ceph/node-exporter/ne.yml
3. ceph orch apply -i '/var/lib/ceph/node-exporter/ne.yml'
4. Service will fail to start as the args have been applied at the beginning of
the service config and not at the end..e.g. cat
/var/lib/ceph/a898358c-eeac-11ec-b707-0800279b70f1/node-exporter.node1-cceph1-vagrant-local1/unit.run
/bin/podman run --rm --ipc=host --stop-signal=SIGTERM --net=host --init --name
ceph-a898358c-eeac-11ec-b707-0800279b70f1-node-exporter-node1-cceph1-vagrant-local1
--user 65534 --security-opt label=disable -d --log-driver journald
--conmon-pidfile
/run/ceph-a898358c-eeac-11ec-b707-0800279b70f1@node-exporter.node1-cceph1-vagrant-local1.service-pid
--cidfile
/run/ceph-a898358c-eeac-11ec-b707-0800279b70f1@node-exporter.node1-cceph1-vagrant-local1.service-cid
--cgroups=split
--collector.textfile.directory=/var/lib/node_exporter/textfile_collector -e
CONTAINER_IMAGE=quay.io/prometheus/node-exporter:v1.3.1 -e
NODE_NAME=node1-cceph1-vagrant-local1.dev-globalrelay.net -e
CEPH_USE_RANDOM_NONCE=1 -v /proc:/host/proc:ro -v /sys:/host/sys:ro -v
/:/rootfs:ro quay.io/prometheus/node-exporter:v1.3.1 --no-collector.timex
--web.listen-address=:9100 --path.procfs=/host/proc --path.sysfs=/host/sys
--path.rootfs=/rootfs
Looking at the cephadm deployer I had expected the extra args to be added at
the end:
https://github.com/ceph/ceph/blob/c37bd103033bc0a9f05ec0e78cef7cbca5649eeb/src/cephadm/cephadm#L575
and
https://github.com/ceph/ceph/blob/c37bd103033bc0a9f05ec0e78cef7cbca5649eeb/src/cephadm/cephadm#L5761
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