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Kubernetes V1 Provider Removed

Issue​

When you upgrade to Armory Spinnaker 2.21 and still use the Kubernetes V1 provider, you will encounter the following error:

2020-07-31 22:11:55.146  WARN 1 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'configurationRefreshListener' defined in URL [jar:file:/opt/clouddriver/lib/clouddriver-web-6.10.0-20200625140019.jar!/com/netflix/spinnaker/clouddriver/listeners/ConfigurationRefreshListener.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'kubernetesV2ProviderSynchronizable': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: The legacy Kubernetes provider (V1) is no longer supported. Please migrate all Kubernetes accounts to the standard provider (V2).

This error is followed by the following error message that gets repeated:

q2020-07-31 22:12:31.005 ERROR 1 --- [gentScheduler-0] c.n.s.c.r.c.ClusteredAgentScheduler : Unable to run agents redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool at redis.clients.jedis.util.Pool.getResource(Pool.java:59) ~[jedis-3.1.0.jar:na] at redis.clients.jedis.JedisPool.getResource(JedisPool.java:234) ~[jedis-3.1.0.jar:na] at com.netflix.spinnaker.kork.jedis.telemetry.InstrumentedJedisPool.getResource(InstrumentedJedisPool.java:60) ~[kork-jedis-7.45.9.jar:7.45.9] at com.netflix.spinnaker.kork.jedis.telemetry.InstrumentedJedisPool.getResource(InstrumentedJedisPool.java:26) ~[kork-jedis-7.45.9.jar:7.45.9] at com.netflix.spinnaker.kork.jedis.JedisClientDelegate.withCommandsClient(JedisClientDelegate.java:54) ~[kork-jedis-7.45.9.jar:7.45.9] at com.netflix.spinnaker.cats.redis.cluster.ClusteredAgentScheduler.acquireRunKey(ClusteredAgentScheduler.java:183) ~[cats-redis-6.10.0-20200625140019.jar:6.10.0-20200625140019] at com.netflix.spinnaker.cats.redis.cluster.ClusteredAgentScheduler.acquire(ClusteredAgentScheduler.java:136) ~[cats-redis-6.10.0-20200625140019.jar:6.10.0-20200625140019] at com.netflix.spinnaker.cats.redis.cluster.ClusteredAgentScheduler.runAgents(ClusteredAgentScheduler.java:163) ~[cats-redis-6.10.0-20200625140019.jar:6.10.0-20200625140019] at com.netflix.spinnaker.cats.redis.cluster.ClusteredAgentScheduler.run(ClusteredAgentScheduler.java:156) ~[cats-redis-6.10.0-20200625140019.jar:6.10.0-20200625140019] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na] at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) ~[na:na] at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na] at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na] Caused by: java.lang.IllegalStateException: Pool not open at org.apache.commons.pool2.impl.BaseGenericObjectPool.assertOpen(BaseGenericObjectPool.java:759) ~[commons-pool2-2.7.0.jar:2.7.0] at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:402) ~[commons-pool2-2.7.0.jar:2.7.0] at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:349) ~[commons-pool2-2.7.0.jar:2.7.0] at redis.clients.jedis.util.Pool.getResource(Pool.java:50) ~[jedis-3.1.0.jar:na] ... 14 common frames omitted

Cause​

The Kubernetes V1 provider is removed in Armory Spinnaker 2.21.