K
Q

automation script on mongo db giving binary error

4/28/2021

Trying to run the script on mongo db to check utlization getting error: cannot execute binary file, any suggestions.

[bp09@zlv172 ~]$ sh disk.sh 
./kubectl config use-context agef

./kubectl exec -it mongoagef-2 -c mongo bash  -- df -h

/usr/bin/df: /usr/bin/df: cannot execute binary file
command terminated with exit code 126

When tried with:

./kubectl exec -it mongoagef-2 -c mongo bash -- file /usr/bin/df

bash: file: No such file or directory command terminated with exit code 127 

./kubectl config use-context agef

./kubectl exec -it mongoagef-2 -c mongo bash  -- df -h

/usr/bin/df: /usr/bin/df: cannot execute binary file
command terminated with exit code 126



[bp09@zlv172 ~]$ ./kubectl config use-context agef
Switched to context "agef".

[bp09@zlv172 ~]$  ./kubectl get pods
NAME              READY     STATUS    RESTARTS   AGE
mongoagef-0   2/2       Running   0          20d
mongoagef-1   2/2       Running   0          24d
mongoagef-2   2/2       Running   0          20d


[bp09@zlv172 ~]$  ./kubectl exec -it mongoagef-2 -c mongo bash
bash-4.2$ df -h /data/db
Filesystem                         Size  Used Avail Use% Mounted on
/de/map/data_vg-shared_vol2  3.5T  1.8T  501G  75% /data/db

but when running with : - 

[bp09@zlv172 ~]$  ./kubectl exec -it mongoagef-2 -c mongo bash -- df -h
/usr/bin/df: /usr/bin/df: cannot execute binary file
command terminated with exit code 126


[bp09@zlv172 ~]$  ./kubectl exec -it mongoagef-2 -c mongo bash -- file /usr/bin/df -h
bash: file: No such file or directory
command terminated with exit code 127


[bp09@zlv172 ~]$  ./kubectl exec -it mongoagef-2 -c mongo bash -- file /bin/df -h
bash: file: No such file or directory
command terminated with exit code 127

when checked with locate df command below is the output:- bp09@zlv172 ~$ locate df

/bin/df


[bp09@zlv172 ~]$  ./kubectl exec -it mongoagef-2 -c mongo bash

bash-4.2$ cd /usr/bin bash-4.2$ ls -lrth|grep -i df

-rwxr-xr-x 1 root root  99K Oct 30  2018 df
-- bp_db
kubectl
kubernetes
kubernetes-helm
mongodb
mongodb-query

Similar Questions

Apache Presto with Kubernetes
Istio-Gateway does not obtain an external IP with EKS v2
Is it possible to convert or cast an integer anchor to a string alias in a yaml file?
RBAC Error : Error from server (Forbidden): error when creating "role-qa.yaml": roles.rbac.authorization.k8s.io "qa-role" is forbidden
Kubernetes-dashboard pod is crashing again and again

2 Answers

5/6/2021

k exec -it mongo -c mongo -- /bin/sh -c df this works fine.

-- bp_db
Source: StackOverflow
5/6/2021

As you mentioned that, df command was working when you login to container and run the command, but not when run using exec. Alternatively you Call the shell and then call the command you need. Eg:

kubectl exec -it mongo -c mongo -- /bin/sh  -c df

-c If the -c option is present, then commands are read from the first non-option argument command_string. If there are arguments after the com‐ mand_string, the first argument is assigned to $0 and any remaining arguments are assigned to the positional parameters. The assignment to $0 sets the name of the shell, which is used in warning and error messages.

-- P....
Source: StackOverflow