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Module: DOCKER

Docker Daemon services, which allows you to pull-up stateless software in additional to PostgreSQL.

Deploy docker on Pigsty managed nodes: Configuration | Administration | Playbook | Dashboard | Parameter

Concept

Docker is a popular container service which provides standardize software deliver solution.

Configuration

Docker module is different from other modules, which does not require pre-configuration to install & enable.

Just run the docker.yml playbook on any Pigsty managed node.

But if you wish to add docker daemon as prometheus monitoring target, you have to specify the docker_enabled parameters on those nodes.

Administration

Using Mirrors

Consider using docker mirror registry, log in with:

docker login quay.io    # entering your username & password

Monitoring

Docker monitoring is part ot NODE module’s responsibility, to register docker target to prometheus.

You have to define docker_enabled on nodes, then re-register them with:

./node.yml -l <selector> -t register_prometheus

Compose Template

Pigsty has a series of built-in docker compose templates.

Playbook

There’s one playbook to install docker on designated node:

docker.yml

The playbook docker.yml will install docker for the given node.

Subtasks of this playbook:

  • docker_install : install docker on nodes
  • docker_admin : add user to docker admin group
  • docker_config : generate docker daemon config
  • docker_launch : launch docker daemon systemd service
  • docker_image : load docker images from /tmp/docker/*.tgz if exists

Parameter

There are 4 parameters about DOCKER module.

Parameter Section Type Level Comment
docker_enabled DOCKER bool C enable docker on this node?
docker_cgroups_driver DOCKER enum C docker cgroup fs driver: cgroupfs,systemd
docker_registry_mirrors DOCKER string[] C docker registry mirror list
docker_image_cache DOCKER path C docker image cache dir, /tmp/docker by default

1 - Metrics

Pigsty Docker module metric list

DOCKER module has 123 available metrics

Metric Name Type Labels Description
builder_builds_failed_total counter ip, cls, reason, ins, job, instance Number of failed image builds
builder_builds_triggered_total counter ip, cls, ins, job, instance Number of triggered image builds
docker_up Unknown ip, cls, ins, job, instance N/A
engine_daemon_container_actions_seconds_bucket Unknown ip, cls, ins, job, instance, le, action N/A
engine_daemon_container_actions_seconds_count Unknown ip, cls, ins, job, instance, action N/A
engine_daemon_container_actions_seconds_sum Unknown ip, cls, ins, job, instance, action N/A
engine_daemon_container_states_containers gauge ip, cls, ins, job, instance, state The count of containers in various states
engine_daemon_engine_cpus_cpus gauge ip, cls, ins, job, instance The number of cpus that the host system of the engine has
engine_daemon_engine_info gauge ip, cls, architecture, ins, job, instance, os_version, kernel, version, graphdriver, os, daemon_id, commit, os_type The information related to the engine and the OS it is running on
engine_daemon_engine_memory_bytes gauge ip, cls, ins, job, instance The number of bytes of memory that the host system of the engine has
engine_daemon_events_subscribers_total gauge ip, cls, ins, job, instance The number of current subscribers to events
engine_daemon_events_total counter ip, cls, ins, job, instance The number of events logged
engine_daemon_health_checks_failed_total counter ip, cls, ins, job, instance The total number of failed health checks
engine_daemon_health_check_start_duration_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
engine_daemon_health_check_start_duration_seconds_count Unknown ip, cls, ins, job, instance N/A
engine_daemon_health_check_start_duration_seconds_sum Unknown ip, cls, ins, job, instance N/A
engine_daemon_health_checks_total counter ip, cls, ins, job, instance The total number of health checks
engine_daemon_host_info_functions_seconds_bucket Unknown ip, cls, ins, job, instance, le, function N/A
engine_daemon_host_info_functions_seconds_count Unknown ip, cls, ins, job, instance, function N/A
engine_daemon_host_info_functions_seconds_sum Unknown ip, cls, ins, job, instance, function N/A
engine_daemon_image_actions_seconds_bucket Unknown ip, cls, ins, job, instance, le, action N/A
engine_daemon_image_actions_seconds_count Unknown ip, cls, ins, job, instance, action N/A
engine_daemon_image_actions_seconds_sum Unknown ip, cls, ins, job, instance, action N/A
engine_daemon_network_actions_seconds_bucket Unknown ip, cls, ins, job, instance, le, action N/A
engine_daemon_network_actions_seconds_count Unknown ip, cls, ins, job, instance, action N/A
engine_daemon_network_actions_seconds_sum Unknown ip, cls, ins, job, instance, action N/A
etcd_debugging_snap_save_marshalling_duration_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
etcd_debugging_snap_save_marshalling_duration_seconds_count Unknown ip, cls, ins, job, instance N/A
etcd_debugging_snap_save_marshalling_duration_seconds_sum Unknown ip, cls, ins, job, instance N/A
etcd_debugging_snap_save_total_duration_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
etcd_debugging_snap_save_total_duration_seconds_count Unknown ip, cls, ins, job, instance N/A
etcd_debugging_snap_save_total_duration_seconds_sum Unknown ip, cls, ins, job, instance N/A
etcd_disk_wal_fsync_duration_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
etcd_disk_wal_fsync_duration_seconds_count Unknown ip, cls, ins, job, instance N/A
etcd_disk_wal_fsync_duration_seconds_sum Unknown ip, cls, ins, job, instance N/A
etcd_disk_wal_write_bytes_total gauge ip, cls, ins, job, instance Total number of bytes written in WAL.
etcd_snap_db_fsync_duration_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
etcd_snap_db_fsync_duration_seconds_count Unknown ip, cls, ins, job, instance N/A
etcd_snap_db_fsync_duration_seconds_sum Unknown ip, cls, ins, job, instance N/A
etcd_snap_db_save_total_duration_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
etcd_snap_db_save_total_duration_seconds_count Unknown ip, cls, ins, job, instance N/A
etcd_snap_db_save_total_duration_seconds_sum Unknown ip, cls, ins, job, instance N/A
etcd_snap_fsync_duration_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
etcd_snap_fsync_duration_seconds_count Unknown ip, cls, ins, job, instance N/A
etcd_snap_fsync_duration_seconds_sum Unknown ip, cls, ins, job, instance N/A
go_gc_duration_seconds summary ip, cls, ins, job, instance, quantile A summary of the pause duration of garbage collection cycles.
go_gc_duration_seconds_count Unknown ip, cls, ins, job, instance N/A
go_gc_duration_seconds_sum Unknown ip, cls, ins, job, instance N/A
go_goroutines gauge ip, cls, ins, job, instance Number of goroutines that currently exist.
go_info gauge ip, cls, ins, job, version, instance Information about the Go environment.
go_memstats_alloc_bytes counter ip, cls, ins, job, instance Total number of bytes allocated, even if freed.
go_memstats_alloc_bytes_total counter ip, cls, ins, job, instance Total number of bytes allocated, even if freed.
go_memstats_buck_hash_sys_bytes gauge ip, cls, ins, job, instance Number of bytes used by the profiling bucket hash table.
go_memstats_frees_total counter ip, cls, ins, job, instance Total number of frees.
go_memstats_gc_sys_bytes gauge ip, cls, ins, job, instance Number of bytes used for garbage collection system metadata.
go_memstats_heap_alloc_bytes gauge ip, cls, ins, job, instance Number of heap bytes allocated and still in use.
go_memstats_heap_idle_bytes gauge ip, cls, ins, job, instance Number of heap bytes waiting to be used.
go_memstats_heap_inuse_bytes gauge ip, cls, ins, job, instance Number of heap bytes that are in use.
go_memstats_heap_objects gauge ip, cls, ins, job, instance Number of allocated objects.
go_memstats_heap_released_bytes gauge ip, cls, ins, job, instance Number of heap bytes released to OS.
go_memstats_heap_sys_bytes gauge ip, cls, ins, job, instance Number of heap bytes obtained from system.
go_memstats_last_gc_time_seconds gauge ip, cls, ins, job, instance Number of seconds since 1970 of last garbage collection.
go_memstats_lookups_total counter ip, cls, ins, job, instance Total number of pointer lookups.
go_memstats_mallocs_total counter ip, cls, ins, job, instance Total number of mallocs.
go_memstats_mcache_inuse_bytes gauge ip, cls, ins, job, instance Number of bytes in use by mcache structures.
go_memstats_mcache_sys_bytes gauge ip, cls, ins, job, instance Number of bytes used for mcache structures obtained from system.
go_memstats_mspan_inuse_bytes gauge ip, cls, ins, job, instance Number of bytes in use by mspan structures.
go_memstats_mspan_sys_bytes gauge ip, cls, ins, job, instance Number of bytes used for mspan structures obtained from system.
go_memstats_next_gc_bytes gauge ip, cls, ins, job, instance Number of heap bytes when next garbage collection will take place.
go_memstats_other_sys_bytes gauge ip, cls, ins, job, instance Number of bytes used for other system allocations.
go_memstats_stack_inuse_bytes gauge ip, cls, ins, job, instance Number of bytes in use by the stack allocator.
go_memstats_stack_sys_bytes gauge ip, cls, ins, job, instance Number of bytes obtained from system for stack allocator.
go_memstats_sys_bytes gauge ip, cls, ins, job, instance Number of bytes obtained from system.
go_threads gauge ip, cls, ins, job, instance Number of OS threads created.
logger_log_entries_size_greater_than_buffer_total counter ip, cls, ins, job, instance Number of log entries which are larger than the log buffer
logger_log_read_operations_failed_total counter ip, cls, ins, job, instance Number of log reads from container stdio that failed
logger_log_write_operations_failed_total counter ip, cls, ins, job, instance Number of log write operations that failed
process_cpu_seconds_total counter ip, cls, ins, job, instance Total user and system CPU time spent in seconds.
process_max_fds gauge ip, cls, ins, job, instance Maximum number of open file descriptors.
process_open_fds gauge ip, cls, ins, job, instance Number of open file descriptors.
process_resident_memory_bytes gauge ip, cls, ins, job, instance Resident memory size in bytes.
process_start_time_seconds gauge ip, cls, ins, job, instance Start time of the process since unix epoch in seconds.
process_virtual_memory_bytes gauge ip, cls, ins, job, instance Virtual memory size in bytes.
process_virtual_memory_max_bytes gauge ip, cls, ins, job, instance Maximum amount of virtual memory available in bytes.
promhttp_metric_handler_requests_in_flight gauge ip, cls, ins, job, instance Current number of scrapes being served.
promhttp_metric_handler_requests_total counter ip, cls, ins, job, instance, code Total number of scrapes by HTTP status code.
scrape_duration_seconds Unknown ip, cls, ins, job, instance N/A
scrape_samples_post_metric_relabeling Unknown ip, cls, ins, job, instance N/A
scrape_samples_scraped Unknown ip, cls, ins, job, instance N/A
scrape_series_added Unknown ip, cls, ins, job, instance N/A
swarm_dispatcher_scheduling_delay_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
swarm_dispatcher_scheduling_delay_seconds_count Unknown ip, cls, ins, job, instance N/A
swarm_dispatcher_scheduling_delay_seconds_sum Unknown ip, cls, ins, job, instance N/A
swarm_manager_configs_total gauge ip, cls, ins, job, instance The number of configs in the cluster object store
swarm_manager_leader gauge ip, cls, ins, job, instance Indicates if this manager node is a leader
swarm_manager_networks_total gauge ip, cls, ins, job, instance The number of networks in the cluster object store
swarm_manager_nodes gauge ip, cls, ins, job, instance, state The number of nodes
swarm_manager_secrets_total gauge ip, cls, ins, job, instance The number of secrets in the cluster object store
swarm_manager_services_total gauge ip, cls, ins, job, instance The number of services in the cluster object store
swarm_manager_tasks_total gauge ip, cls, ins, job, instance, state The number of tasks in the cluster object store
swarm_node_manager gauge ip, cls, ins, job, instance Whether this node is a manager or not
swarm_raft_snapshot_latency_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
swarm_raft_snapshot_latency_seconds_count Unknown ip, cls, ins, job, instance N/A
swarm_raft_snapshot_latency_seconds_sum Unknown ip, cls, ins, job, instance N/A
swarm_raft_transaction_latency_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
swarm_raft_transaction_latency_seconds_count Unknown ip, cls, ins, job, instance N/A
swarm_raft_transaction_latency_seconds_sum Unknown ip, cls, ins, job, instance N/A
swarm_store_batch_latency_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
swarm_store_batch_latency_seconds_count Unknown ip, cls, ins, job, instance N/A
swarm_store_batch_latency_seconds_sum Unknown ip, cls, ins, job, instance N/A
swarm_store_lookup_latency_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
swarm_store_lookup_latency_seconds_count Unknown ip, cls, ins, job, instance N/A
swarm_store_lookup_latency_seconds_sum Unknown ip, cls, ins, job, instance N/A
swarm_store_memory_store_lock_duration_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
swarm_store_memory_store_lock_duration_seconds_count Unknown ip, cls, ins, job, instance N/A
swarm_store_memory_store_lock_duration_seconds_sum Unknown ip, cls, ins, job, instance N/A
swarm_store_read_tx_latency_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
swarm_store_read_tx_latency_seconds_count Unknown ip, cls, ins, job, instance N/A
swarm_store_read_tx_latency_seconds_sum Unknown ip, cls, ins, job, instance N/A
swarm_store_write_tx_latency_seconds_bucket Unknown ip, cls, ins, job, instance, le N/A
swarm_store_write_tx_latency_seconds_count Unknown ip, cls, ins, job, instance N/A
swarm_store_write_tx_latency_seconds_sum Unknown ip, cls, ins, job, instance N/A
up Unknown ip, cls, ins, job, instance N/A

2 - FAQ

Pigsty Docker module frequently asked questions

How to install Docker ？

Install with the docker.yml playbook, targeting at any node managed by Pigsty.

./docker.yml -l <selector>