a13bba6c1e
* chore: k8s rolling update deployment * chore: change param name * docs: README for k8s rolling update * docs: fix typo * chore: add namespace, add loadbalancer * docs: update doc for k8s deployment and service * feat: crontab per 20 minutes * fix: sed on linux
48 lines
1.6 KiB
Markdown
48 lines
1.6 KiB
Markdown
# Kubernetes Rolling Update Deployment
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Use kubernetes rolling update deployment strategy for timed replace container with new one. Latest traffic will be used during container startup.
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## Usage
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```bash
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# NOTE: prepare your image and fill into osrm.yaml
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$ sed -i "s#TELENAV_OSRM_BACKEND_DOCKER_IMAGE#<your image>#g" ./osrm.yaml
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# create deployment
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$ kubectl create -f osrm.yaml
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deployment.extensions/osrm created
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# create loadbalancer
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$ kubectl create -f osrm_svc.yaml
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service/routing-osrm-service created
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# OPTIONAL: checking deployment status, wait READY
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$ kubectl get deployments -n routing-osrm
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NAME READY UP-TO-DATE AVAILABLE AGE
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osrm 0/1 1 0 20s
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$ kubectl get pods -n routing-osrm
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NAME READY STATUS RESTARTS AGE
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osrm-67b55f46c9-tpfgs 0/1 Running 0 22s
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# OPTIONAL: check deployment details for troubleshooting
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$ kubectl describe deployments -n routing-osrm
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...
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$ kubectl describe pods -n routing-osrm
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...
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# OPTIONAL: check container running log for troubleshooting
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$ kubectl logs -f --timestamps=true -n routing-osrm osrm-67b55f46c9-tpfgs
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...
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# start timed rolling update for traffic updating
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$ crontab osrm_cron
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$ crontab -l
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*/30 * * * * export PATH=$HOME/bin:$PATH && kubectl set env --env="LAST_MANUAL_RESTART=$(date -u +\%Y\%m\%dT\%H\%M\%S)" deploy/osrm -n routing-osrm >> ${HOME}/osrm_cron.log 2>&1
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# OPTIONAL: if want to stop
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$ crontab -r
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$ kubectl delete deployment osrm -n routing-osrm
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deployment.extensions "osrm" deleted
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$ kubectl delete routing-osrm-service -n routing-osrm
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service "routing-osrm-service" deleted
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``` |