Cron now also runs under alpine Linux (#31)

* fix deploy when cron is failing

* Cron now also runs under alpine Linux

UPGRADE.md

@@ -10,6 +10,10 @@
 2. Run `composer update shopsys/deployment`
 3. Check files in mentioned pull requests and if you have any of them extended in your project, apply changes manually
 
+## Upgrade from v3.2.9 to v3.3.0
+
+- Cron can run under Alpine Linux ([#31](https://github.com/shopsys/deployment/pull/31))
+
 ## Upgrade from v3.2.7 to v3.2.9
 
 - Added routes to Nginx ([Commit](https://github.com/shopsys/deployment/commit/5b378a3ee1131fed8ac2821158f03f667db19dcb))

deploy/parts/cron.sh

@@ -8,7 +8,7 @@ assertVariable "CONFIGURATION_TARGET_PATH"
 ITERATOR=0
 for key in ${!CRON_INSTANCES[@]}; do
 
-    CRONTAB_LINE="        ${CRON_INSTANCES[${key}]} root . /root/.project_env.sh && cd /var/www/html && ./phing ${key} > /dev/null 2>&1"
+    CRONTAB_LINE="        ${CRON_INSTANCES[${key}]} . /root/.project_env.sh && cd /var/www/html/ && ./phing ${key} > /dev/null 2>&1"
     echo "${CRONTAB_LINE}" >> "${CONFIGURATION_TARGET_PATH}/configmap/cron-list.yaml"
 
     ITERATOR=$(expr $ITERATOR + 1)

deploy/parts/deploy.sh

@@ -58,7 +58,7 @@ if [ ${RUNNING_PRODUCTION} -eq "0" ]; then
     echo -e "[${GREEN}OK${NO_COLOR}]"
 fi
 
-DEPLOYED_CRON_POD=$(kubectl get pods --namespace=${PROJECT_NAME} --field-selector=status.phase=Running -l app=cron -o=jsonpath='{.items[0].metadata.name}') || true
+DEPLOYED_CRON_POD=$(kubectl get pods --namespace=${PROJECT_NAME} --field-selector=status.phase=Running -l app=cron -o=jsonpath='{.items[?(@.status.containerStatuses[0].state.running)].metadata.name}') || true
 
 if [[ -n ${DEPLOYED_CRON_POD} ]]; then
     echo -n "Lock crons to prevent run next iteration "

kubernetes/deployments/cron.yaml

@@ -42,7 +42,7 @@ spec:
                     imagePullPolicy: Always
                     workingDir: /var/www/html
                     command: ["/bin/sh","-c"]
-                    args: ["cd /var/www/html && ./phing warmup > /dev/null && rm -rf /tmp/log-pipe && mkfifo /tmp/log-pipe && chmod 666 /tmp/log-pipe && cron && stdbuf -o0 tail -n +1 -f /tmp/log-pipe"]
+                    args: ["cd /var/www/html && ./phing warmup > /dev/null && rm -rf /tmp/log-pipe && mkfifo /tmp/log-pipe && chmod 666 /tmp/log-pipe && crontab -u root /var/spool/cron/template && { crond || cron; } && stdbuf -o0 tail -n +1 -f /tmp/log-pipe"]
                     lifecycle:
                         preStop:
                             exec:
@@ -54,7 +54,7 @@ spec:
                             mountPath: /var/www/html/{{DOMAINS_URLS_FILEPATH}}
                             subPath: "{{DOMAINS_URLS_FILENAME}}"
                         -   name: cron-list
-                            mountPath: /etc/cron.d/cron
+                            mountPath: /var/spool/cron/template
                             subPath: cron
                         -   name: cron-env
                             mountPath: /root/.project_env.sh