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模块：DOCKER

Docker Daemon 服务，允许用户一键拉起容器化的无状态软件工具模板，加装各种功能。

在节点部署 Docker： 配置 | 管理 | 剧本 | 参数

概念

Docker 是流行的容器平台，提供了标准化的软件交付能力。

尽管我们不赞成将 Docker 用于有状态的重要数据库上，但它对于无状态的应用软件而言是一个相当优雅的解决方案

配置

Docker 模块不同于其他模块，不需要事先配置，您只需要针对 Pigsty 配置文件中任意被纳管的现有节点执行 docker.yml 剧本，即可完成 Docker 的安装。

您可以在全局/集群/节点层面声明 [docker_enabled]，则主机节点在被纳入监控时，Docker Daemon 的监控指标也一并会被抓取。

# ./infra.yml  -l infra
# ./docker.yml -l infra (optional)
# ./node.yml   -l infra -t register_prometheus
infra:
  hosts:
    10.10.10.10: { infra_seq: 1 ,nodename: infra-1 }
    10.10.10.11: { infra_seq: 2 ,nodename: infra-2 }
  vars:
    docker_enabled: true
    node_id_from_pg: false
    node_cluster: infra
    node_conf: oltp

管理

使用镜像站点

如果您在中国大陆受到功夫网影响，可以考虑使用墙内可用的 Docker 镜像站点，例如 quay.io：

docker login quay.io    # 输入用户名密码，完成登陆

纳入监控

如果您希望将 Docker 纳入现有监控体系中，首先应当在节点上声明参数 docker_enabled 为 true。

然后针对节点单独执行监控目标注册任务 register_prometheus 即可：

./node.yml -l <your-node-selector> -t register_prometheus  # 将 Docker Daemon 纳入 Prometheus 监控目标中

使用软件模板

Pigsty 提供了一系列使用 Docker Compose 拉起的软件工具模板，可以开箱即用。

剧本

Pigsty 提供了一个用于安装 Docker 模块的剧本

docker.yml

在节点上安装 Docker 的任务 docker.yml 包含了以下子任务：

docker_install   : 在节点上安装 Docker，Docker Compose 软件包
docker_admin     : 将指定的用户加入 Docker 管理员用户组中
docker_config    : 生成 Docker 守护进程服务配置文件
docker_launch    : 启动 Docker 守护进程服务
docker_image     : 尝试从 /tmp/docker/*.tgz 加载镜像（如果存在）

参数

DOCKER 模块有 4 个参数：

参数 参数组 类型 层次 中文说明
docker_enabled DOCKER bool C 在当前节点上启用 Docker？默认不启用
docker_cgroups_driver DOCKER enum C Docker CGroup 文件系统驱动：cgroupfs,systemd
docker_registry_mirrors DOCKER string[] C Docker 仓库镜像列表
docker_image_cache DOCKER path C Docker 镜像缓存目录：默认为/tmp/docker

1 - 指标列表

Pigsty Docker 模块提供的完整监控指标列表与释义

DOCKER 模块包含有 123 类可用监控指标。

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 - 常见问题

Pigsty Docker 模块常见问题答疑

如何安装 Docker ？

使用 docker.yml 剧本，在你想安装的节点上执行，即可完成 Docker 的安装

./docker.yml -l <selector>