Cannot deploy mysqld_exporter in K8s cluster using locally built image

[huanggze]

Host operating system: output of uname -a

Linux ks-allinone 3.10.0-862.el7.x86_64 #1 SMP Fri Apr 20 16:44:24 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

mysqld_exporter version: output of mysqld_exporter --version

v0.11.0

MySQL server version

5.7.14

mysqld_exporter command line flags

  --collect.global_status
  --collect.global_variables
  --collect.info_schema.tables
  --collect.info_schema.tables.databases
  *
  --collect.slave_status

What did you do that produced an error?

I clone mysql_exporter locally and build image from Dockerfile (all based on tag v0.11.0). After everything is done, I deploy mysqld-exporter in Kubernetes cluster with new image.

What did you expect to see?

I expect to see a running pod

What did you see instead?

But the pod fail to start. And the Event is saying "/bin/mysqld_exporter": permission denied

Events:
  Type     Reason     Age                  From                  Message
  ----     ------     ----                 ----                  -------
  Normal   Scheduled  13m                  default-scheduler     Successfully assigned mysql-ns/mysql-exporter-prometheus-mysql-exporter-7f89c9d4-42mtq to ks-allinone
  Normal   Created    12m (x4 over 13m)    kubelet, ks-allinone  Created container
  Warning  Failed     12m (x4 over 13m)    kubelet, ks-allinone  Error: failed to start container "prometheus-mysql-exporter": Error response from daemon: OCI runtime create failed: container_linux.go:345: starting container process caused "exec: \"/bin/mysqld_exporter\": permission denied": unknown
  Normal   Pulling    11m (x5 over 13m)    kubelet, ks-allinone  pulling image "dockerhub.qingcloud.com/loganhuang/mysql-exporter:latest"
  Normal   Pulled     11m (x5 over 13m)    kubelet, ks-allinone  Successfully pulled image "myrepo/mysql-exporter:latest"
  Warning  BackOff    3m8s (x48 over 13m)  kubelet, ks-allinone  Back-off restarting failed container

[huanggze]

I forgot to make first..