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March 9, 2022 13:27
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Automatically delete jobs affected by CronJob Controller v2 bug which stops Job state from updating
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| #!/usr/bin/env bash | |
| if [ -z "${KUBE_CONTEXT}" ] | |
| then | |
| echo Please provide KUBE_CONTEXT | |
| exit 1 | |
| fi | |
| kubectl --context="${KUBE_CONTEXT}" version > /dev/null 2>&1 | |
| if [ $? -ne 0 ] | |
| then | |
| echo Cannot authenticate with API server | |
| exit 1 | |
| fi | |
| jsonpath_template_multi='{.items[*].status.active[*].name}' | |
| jsonpath_template_single='{.status.active[*].name}' | |
| active_cronjobs=$(kubectl --context="${KUBE_CONTEXT}" get cronjob \ | |
| | grep " 1 " \ | |
| | cut -d' ' -f1) | |
| if [ -z "${active_cronjobs}" ] | |
| then | |
| echo No active CronJobs | |
| exit 1 | |
| fi | |
| jsonpath_template="${jsonpath_template_multi}" | |
| if [ "$(echo "${active_cronjobs}" | wc -l)" = "1" ] | |
| then | |
| jsonpath_template="${jsonpath_template_single}" | |
| fi | |
| active_cronjob_jobs=$(echo "${active_cronjobs}" | xargs kubectl \ | |
| --context="${KUBE_CONTEXT}" get cronjob -ojsonpath \ | |
| --template="${jsonpath_template}") | |
| if [ -z "${active_cronjob_jobs}" ] | |
| then | |
| echo CronJobs have no active Jobs | |
| exit 1 | |
| fi | |
| completed_jobs_marked_active=$(echo "${active_cronjob_jobs}" | xargs kubectl --context="${KUBE_CONTEXT}" get job \ | |
| | grep 1/1 \ | |
| | cut -d' ' -f1) | |
| if [ -z "${completed_jobs_marked_active}" ] | |
| then | |
| echo Found jobs are actually active. Nothing to do. | |
| exit 0 | |
| fi | |
| echo Deleting the following completed jobs: | |
| echo "${completed_jobs_marked_active}" | |
| sleep 3 | |
| echo "${completed_jobs_marked_active}" \ | |
| | xargs kubectl --context="${KUBE_CONTEXT}" delete job | |
| exit 0 |
Author
@pere3 thanks. that looks like a permanent solution. currently, I'm running this script manually
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there is also a way of doing that automation through configurable application https://codeberg.org/hjacobs/kube-janitor