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https://issues.apache.org/jira/browse/MESOS-4645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15217787#comment-15217787
]
Ian Babrou commented on MESOS-4645:
-----------------------------------
I've also got all my task killed on what is supposed to be a seamless 0.26.0 ->
0.27.2 upgrade:
{noformat}
Mar 30 10:11:06 myhost mesos-slave[17550]: I0330 10:11:06.451997 17561
slave.cpp:709] Slave asked to shut down by master@1.2.11.16:5050 because 'Slave
attempted to re-register after removal'
{noformat}
Marathon fail reason:
{noformat}
Slave myhost removed: health check timed out
{noformat}
> Mesos agent shutdown on healtcheck timeout rather than lost and recovered
> -------------------------------------------------------------------------
>
> Key: MESOS-4645
> URL: https://issues.apache.org/jira/browse/MESOS-4645
> Project: Mesos
> Issue Type: Bug
> Affects Versions: 0.27.1
> Reporter: Cody Maloney
> Labels: mesosphere
>
> I expected slaves to have to be gone the re-registration timeout before
> they'd be lost to the cluster, not fail 5 healtchecks (Failing the
> healthchecks indicates there is a network partition, not that the agent is
> gone for good and will never come back).
> Is there some flag I'm missing here which I should be setting?
> From my perspective I expect frameworks to not get offers for resources on
> agents which haven't been contacted recently (The framework wouldn't be able
> to launch anything on the agent). Once the re-registration period times out
> the slave would be assumed completely lost and the tasks assumed terminated /
> able to be re-launched if desired. If an agent recovers between the
> healthcheck timeout and re-registration timeout, it should be able to re-join
> the cluster with its running tasks kept running.
> Note: Some log lines have their start or tail truncated. Critical stuff
> should all be there
> Master flags
> {noformat}
> Feb 11 00:22:19 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:22:19.690507 1362 master.cpp:369] Flags at startup:
> --allocation_interval="1secs" --allocator="HierarchicalDRF"
> --authenticate="false" --authenticate_slaves="false"
> --authenticators="crammd5" --authorizers="local" --cluster="cody-cm52sd-2"
> --framework_sorter="drf" --help="false" --hostname_lookup="false"
> --initialize_driver_logging="true"
> --ip_discovery_command="/opt/mesosphere/bin/detect_ip"
> --log_auto_initialize="true" --log_dir="/var/log/mesos" --logbufsecs="0"
> --logging_level="INFO" --max_slave_ping_timeouts="5" --port="5050"
> --quiet="false" --quorum="1" --recovery_slave_removal_limit="100%"
> --registry="replicated_log" --registry_fetch_timeout="1mins"
> --registry_store_timeout="5secs" --registry_strict="false"
> --roles="slave_public" --root_submissions="true"
> --slave_ping_timeout="15secs" --slave_reregister_timeout="10mins"
> --user_sorter="drf" --version="false"
> --webui_dir="/opt/mesosphere/packages/mesos--4dd59ec6bde2052f6f2a0a0da415b6c92c3c418a/share/mesos/webui"
> --weights="slave_public=1" --work_dir="/var/lib/mesos/master"
> --zk="zk://127.0.0.1:2181/mesos" --zk_session_timeout="10secs"
> {noformat}
> Slave flags
> {noformat}
> Feb 11 00:34:13 ip-10-0-0-52.us-west-2.compute.internal mesos-slave[3914]:
> I0211 00:34:13.334395 3914 slave.cpp:192] Flags at startup:
> --appc_store_dir="/tmp/mesos/store/appc" --authenticatee="crammd5"
> --cgroups_cpu_enable_pids_and_tids_count="false" --cgroups_enable_cfs="false"
> --cgroups_hierarchy="/sys/fs/cgroup" --cgroups_limit_swap="false"
> --cgroups_root="mesos" --container_disk_watch_interval="15secs"
> --containerizers="docker,mesos" --default_role="*"
> --disk_watch_interval="1mins" --docker="docker"
> --docker_auth_server="auth.docker.io" --docker_auth_server_port="443"
> --docker_kill_orphans="true"
> --docker_local_archives_dir="/tmp/mesos/images/docker"
> --docker_puller="local" --docker_puller_timeout="60"
> --docker_registry="registry-1.docker.io" --docker_registry_port="443"
> --docker_remove_delay="1hrs" --docker_socket="/var/run/docker.sock"
> --docker_stop_timeout="0ns" --docker_store_dir="/tmp/mesos/store/docker"
> --enforce_container_disk_quota="false"
> --executor_environment_variables="{"LD_LIBRARY_PATH":"\/opt\/mesosphere\/lib","PATH":"\/usr\/bin:\/bin","SASL_PATH":"\/opt\/mesosphere\/lib\/sasl2","SHELL":"\/usr\/bin\/bash"}"
> --executor_registration_timeout="5mins"
> --executor_shutdown_grace_period="5secs"
> --fetcher_cache_dir="/tmp/mesos/fetch" --fetcher_cache_size="2GB"
> --frameworks_home="" --gc_delay="2days" --gc_disk_headroom="0.1"
> --hadoop_home="" --help="false" --hostname_lookup="false"
> --image_provisioner_backend="copy" --initialize_driver_logging="true"
> --ip_discovery_command="/opt/mesosphere/bin/detect_ip"
> --isolation="cgroups/cpu,cgroups/mem"
> --launcher_dir="/opt/mesosphere/packages/mesos--4dd59ec6bde2052f6f2a0a0da415b6c92c3c418a/libexec/mesos"
> --log_dir="/var/log/mesos" --logbufsecs="0" --logging_level="INFO"
> --master="zk://leader.mesos:2181/mesos"
> --oversubscribed_resources_interval="15secs" --perf_duration="10secs"
> --perf_interval="1mins" --port="5051" --qos_correction_interval_min="0ns"
> --quiet="false" --recover="reconnect" --recovery_timeout="15mins"
> --registration_backoff_factor="1secs"
> --resources="ports:[1025-2180,2182-3887,3889-5049,5052-8079,8082-8180,8182-32000]"
> --re
> Feb 11 00:34:13 ip-10-0-0-52.us-west-2.compute.internal mesos-slave[3914]:
> vocable_cpu_low_priority="true" --sandbox_directory="/mnt/mesos/sandbox"
> --slave_subsystems="cpu,memory" --strict="true" --switch_user="true"
> --systemd_runtime_directory="/run/systemd/system" --version="false"
> --work_dir="/var/lib/mesos/slave"
> {noformat}
> h2. Restarting the slave0
> {noformat}
> Feb 11 00:32:44 ip-10-0-0-52.us-west-2.compute.internal mesos-slave[3261]:
> W0211 00:32:40.981289 3261 logging.cpp:81] RAW: Received signal SIGTERM from
> process 1 of user 0; exiting
> Feb 11 00:32:44 ip-10-0-0-52.us-west-2.compute.internal systemd[1]: Stopping
> Mesos Slave...
> Feb 11 00:32:44 ip-10-0-0-52.us-west-2.compute.internal systemd[1]: Stopped
> Mesos Slave.
> Feb 11 00:34:02 ip-10-0-0-52.us-west-2.compute.internal systemd[1]: Starting
> Mesos Slave...
> Feb 11 00:34:02 ip-10-0-0-52.us-west-2.compute.internal ping[3534]: PING
> leader.mesos (10.0.4.187) 56(84) bytes of data.
> Feb 11 00:34:02 ip-10-0-0-52.us-west-2.compute.internal ping[3534]: 64 bytes
> from ip-10-0-4-187.us-west-2.compute.internal (10.0.4.187): icmp_seq=1 ttl=64
> time=0.314 ms
> Feb 11 00:34:02 ip-10-0-0-52.us-west-2.compute.internal ping[3534]: ---
> leader.mesos ping statistics ---
> Feb 11 00:34:02 ip-10-0-0-52.us-west-2.compute.internal ping[3534]: 1 packets
> transmitted, 1 received, 0% packet loss, time 0ms
> Feb 11 00:34:02 ip-10-0-0-52.us-west-2.compute.internal ping[3534]: rtt
> min/avg/max/mdev = 0.314/0.314/0.314/0.000 ms
> Feb 11 00:34:02 ip-10-0-0-52.us-west-2.compute.internal systemd[1]: Started
> Mesos Slave.
> Feb 11 00:34:02 ip-10-0-0-52.us-west-2.compute.internal mesos-slave[3536]:
> I0211 00:34:02.256242 3536 logging.cpp:172] INFO level logging started!
> {noformat}
> h2. The slave detects the new master, gets shutdown for re-registering after
> removal
> {noformat}
> Feb 11 00:34:04 ip-10-0-0-52.us-west-2.compute.internal mesos-slave[3536]:
> I0211 00:34:04.705356 3546 slave.cpp:729] New master detected at
> master@10.0.4.187:5050
> Feb 11 00:34:04 ip-10-0-0-52.us-west-2.compute.internal mesos-slave[3536]:
> I0211 00:34:04.705366 3539 status_update_manager.cpp:176] Pausing sending
> status updates
> Feb 11 00:34:04 ip-10-0-0-52.us-west-2.compute.internal mesos-slave[3536]:
> I0211 00:34:04.705550 3546 slave.cpp:754] No credentials provided.
> Attempting to register without authentication
> Feb 11 00:34:04 ip-10-0-0-52.us-west-2.compute.internal mesos-slave[3536]:
> I0211 00:34:04.705597 3546 slave.cpp:765] Detecting new master
> Feb 11 00:34:05 ip-10-0-0-52.us-west-2.compute.internal mesos-slave[3536]:
> I0211 00:34:05.624832 3544 slave.cpp:643] Slave asked to shut down by
> master@10.0.4.187:5050 because 'Slave attempted to re-register after removal'
> Feb 11 00:34:05 ip-10-0-0-52.us-west-2.compute.internal mesos-slave[3536]:
> I0211 00:34:05.624908 3544 slave.cpp:2009] Asked to shut down framework
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-0000 by master@10.0.4.187:5050
> Feb 11 00:34:05 ip-10-0-0-52.us-west-2.compute.internal mesos-slave[3536]:
> I0211 00:34:05.624939 3544 slave.cpp:2034] Shutting down framework
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-0000
> {noformat}
> h2. Snippet of master flags
> {noformat}
> Feb 11 00:22:19 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:22:19.690507 1362 master.cpp:369] Flags at startup:
> --allocation_interval="1secs" --allocator="HierarchicalDRF"
> --authenticate="false" --authenticate_slaves="false"
> --authenticators="crammd5" --authorizers="local" --cluster="cody-cm52sd-2"
> --framework_sorter="drf" --help="false" --hostname_lookup="false"
> --initialize_driver_logging="true"
> --ip_discovery_command="/opt/mesosphere/bin/detect_ip"
> --log_auto_initialize="true" --log_dir="/var/log/mesos" --logbufsecs="0"
> --logging_level="INFO" --max_slave_ping_timeouts="5" --port="5050"
> --quiet="false" --quorum="1" --recovery_slave_removal_limit="100%"
> --registry="replicated_log" --registry_fetch_timeout="1mins"
> --registry_store_timeout="5secs" --registry_strict="false"
> --roles="slave_public" --root_submissions="true"
> --slave_ping_timeout="15secs" --slave_reregister_timeout="10mins"
> --user_sorter="drf" --version="false"
> --webui_dir="/opt/mesosphere/packages/mesos--4dd59ec6bde2052f6f2a0a0da415b6c92c3c418a/share/mesos/webui"
> --weights="slave_public=1" --work_dir="/var/lib/mesos/master"
> --zk="zk://127.0.0.1:2181/mesos" --zk_session_timeout="10secs"
> {noformat}
> h2. Master initially registering the slave
> {noformat}
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.968310 1373 master.cpp:3859] Registering slave at
> slave(1)@10.0.0.52:5051 (10.0.0.52) with id
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0
> {noformat}
> {noformat}
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.976769 1374 log.cpp:704] Attempting to truncate the log to 3
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.976820 1370 coordinator.cpp:350] Coordinator attempting to
> write TRUNCATE action at position 4
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.977002 1369 replica.cpp:540] Replica received write request
> for position 4 from (13)@10.0.4.187:5050
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.977157 1374 master.cpp:3927] Registered slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051
> (10.0.0.52) with ports(*):[1025-
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.977207 1368 hierarchical.cpp:344] Added slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 (10.0.0.52) with ports(*):[1025-2180,
> 2182-3887, 3889-5049,
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.977552 1368 master.cpp:4979] Sending 1 offers to framework
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-0000 (marathon) at
> scheduler-8174298d-3ef3-4683-9
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.978520 1369 leveldb.cpp:343] Persisting action (16 bytes) to
> leveldb took 1.485099ms
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.978559 1369 replica.cpp:715] Persisted action at 4
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.978710 1369 replica.cpp:694] Replica received learned notice
> for position 4 from @0.0.0.0:0
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.979212 1372 master.cpp:4269] Received update of slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051
> (10.0.0.52) with total o
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.979322 1372 hierarchical.cpp:400] Slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 (10.0.0.52) updated with
> oversubscribed resources (total: ports(
> Feb 11 00:23:01 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:23:01.980257 1369 leveldb.cpp:343] Persisting action (18 bytes) to
> leveldb took 1.514614ms
> {noformat}
> h2. Lose the slave
> {noformat}
> Feb 11 00:32:12 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:12.578547 1368 master.cpp:1083] Slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051
> (10.0.0.52) disconnected
> Feb 11 00:32:12 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:12.578627 1368 master.cpp:2531] Disconnecting slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051 (10.0.0.52)
> Feb 11 00:32:12 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:12.578673 1368 master.cpp:2550] Deactivating slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051 (10.0.0.52)
> Feb 11 00:32:12 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:12.578764 1374 hierarchical.cpp:429] Slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 deactivated
> {noformat}
> h2. Slave came back (earlier restart, only gone for seconds)
> {noformat}
> Feb 11 00:32:15 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:15.965806 1370 master.cpp:4019] Re-registering slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051 (10.0.0.52)
> Feb 11 00:32:15 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:15.966354 1373 hierarchical.cpp:417] Slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 reactivated
> Feb 11 00:32:15 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:15.966419 1370 master.cpp:4207] Sending updated checkpointed
> resources to slave 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at
> slave(1)@10.0.0.52:5051
> Feb 11 00:32:15 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:15.967167 1371 master.cpp:4269] Received update of slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051
> (10.0.0.52) with total o
> Feb 11 00:32:15 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:15.967296 1371 hierarchical.cpp:400] Slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 (10.0.0.52) updated with
> oversubscribed resources (total: ports(
> {noformat}
> h2. This shutdown of the slave
> {noformat}
> Feb 11 00:32:44 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:44.142541 1371 http.cpp:334] HTTP GET for /master/state-summary
> from 10.0.4.187:44274 with User-Agent='Mozilla/5.0 (X11; Linux x86_64)
> AppleWebKit/5
> Feb 11 00:32:44 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:44.150949 1368 master.cpp:1083] Slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051
> (10.0.0.52) disconnected
> Feb 11 00:32:44 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:44.151002 1368 master.cpp:2531] Disconnecting slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051 (10.0.0.52)
> Feb 11 00:32:44 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:44.151048 1368 master.cpp:2550] Deactivating slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051 (10.0.0.52)
> Feb 11 00:32:44 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:32:44.151113 1368 hierarchical.cpp:429] Slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 deactivated
> {noformat}
> h2. Slave lost (The critical part). Slave should be lost at healthcheck
> timeout, not shut down.
> {noformat}
> Feb 11 00:33:47 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:33:47.009037 1372 master.cpp:236] Shutting down slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 due to health check timeout
> Feb 11 00:33:47 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> W0211 00:33:47.009124 1372 master.cpp:4581] Shutting down slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051
> (10.0.0.52) with message 'hea
> Feb 11 00:33:47 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:33:47.009181 1372 master.cpp:5846] Removing slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051
> (10.0.0.52): health check timed ou
> Feb 11 00:33:47 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:33:47.009297 1372 master.cpp:6066] Updating the state of task
> test-app-2.4057f89f-d056-11e5-8aeb-0242d6f35f4b of framework
> 0c9ebb3f-23f8-4fce-b276-9ebc
> Feb 11 00:33:47 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:33:47.009353 1369 hierarchical.cpp:373] Removed slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0
> {noformat}
> h2. Tasks marked as slave-lost
> {noformat}
> 2] Removing task test-app.4076cb59-d056-11e5-8aeb-0242d6f35f4b with resources
> cpus(*):0.1; mem(*):16; ports(*):[2791-2791] of framework
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-0000 on slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)
> 6] Updating the state of task test-app.40756bc5-d056-11e5-8aeb-0242d6f35f4b
> of framework 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-0000 (latest state:
> TASK_LOST, status update state: TASK_LOST)
> 2] Removing task test-app.40756bc5-d056-11e5-8aeb-0242d6f35f4b with resources
> cpus(*):0.1; mem(*):16; ports(*):[6724-6724] of framework
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-0000 on slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)
> 6] Updating the state of task test-app-2.40765628-d056-11e5-8aeb-0242d6f35f4b
> of framework 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-0000 (latest state:
> TASK_LOST, status update state: TASK_LOST)
> {noformat}
> h2. Slave gone gone
> {noformat}
> Feb 11 00:33:47 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:33:47.021023 1374 master.cpp:5965] Removed slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 (10.0.0.52): health check timed out
> {noformat}
> h2. Master refuses to accept slave
> {noformat}
> Feb 11 00:34:05 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> W0211 00:34:05.614985 1368 master.cpp:3997] Slave
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S0 at slave(1)@10.0.0.52:5051
> (10.0.0.52) attempted to re-register after
> {noformat}
> h2. Slave comes up with new id, registers properly
> {noformat}
> Feb 11 00:34:13 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:34:13.757870 1368 master.cpp:3859] Registering slave at
> slave(1)@10.0.0.52:5051 (10.0.0.52) with id
> 0c9ebb3f-23f8-4fce-b276-9ebca1ede0b1-S1
> Feb 11 00:34:13 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:34:13.758057 1372 registrar.cpp:441] Applied 1 operations in
> 23020ns; attempting to update the 'registry'
> Feb 11 00:34:13 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:34:13.758257 1368 log.cpp:685] Attempting to append 367 bytes to
> the log
> Feb 11 00:34:13 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:34:13.758316 1368 coordinator.cpp:350] Coordinator attempting to
> write APPEND action at position 7
> Feb 11 00:34:13 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:34:13.758450 1368 replica.cpp:540] Replica received write request
> for position 7 from (75)@10.0.4.187:5050
> Feb 11 00:34:13 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:34:13.759891 1368 leveldb.cpp:343] Persisting action (386 bytes) to
> leveldb took 1.411937ms
> Feb 11 00:34:13 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:34:13.759927 1368 replica.cpp:715] Persisted action at 7
> Feb 11 00:34:13 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:34:13.760097 1368 replica.cpp:694] Replica received learned notice
> for position 7 from @0.0.0.0:0
> Feb 11 00:34:13 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:34:13.763203 1368 leveldb.cpp:343] Persisting action (388 bytes) to
> leveldb took 3.072892ms
> Feb 11 00:34:13 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:34:13.763236 1368 replica.cpp:715] Persisted action at 7
> Feb 11 00:34:13 ip-10-0-4-187.us-west-2.compute.internal mesos-master[1362]:
> I0211 00:34:13.763250 1368 replica.cpp:700] Replica learned APPEND action at
> position 7
> {noformat}
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