目录
输入和输出集成概述
Docker 输入插件允许您使用 Docker Engine API 从 Docker 容器收集指标,从而增强容器化应用程序的可视性和监控。
Telegraf 的 SQL 输出插件通过为每种指标类型动态创建表,将指标存储在 SQL 数据库中。 当配置为 SQLite 时,它使用基于文件的 DSN 和为轻量级嵌入式数据库使用量身定制的最小 SQL 模式。
集成详情
Docker
Telegraf 的 Docker 输入插件从 Docker Engine API 收集有价值的指标,从而深入了解正在运行的容器。 此插件使用官方 Docker 客户端与 Engine API 接口,允许用户监控各种容器状态、资源分配和性能指标。 凭借按名称和状态过滤容器的选项,以及可自定义的标签,此插件支持在各种环境中监控容器化应用程序的灵活性,无论是在本地系统上还是在 Kubernetes 等编排平台内。 此外,它还通过要求访问 Docker 守护程序的权限来解决安全注意事项,并强调在容器化环境中部署时进行正确的配置。
SQLite
SQL 输出插件使用动态模式将 Telegraf 指标写入 SQL 数据库,其中每种指标类型对应一个表。 对于 SQLite,该插件使用 modernc.org/sqlite 驱动程序,并且需要文件 URI 格式的 DSN(例如“file:/path/to/telegraf.db?cache=shared”)。 此配置利用标准 ANSI SQL 进行表创建和数据插入,确保与 SQLite 的功能兼容。
配置
Docker
[[inputs.docker]]
## Docker Endpoint
## To use TCP, set endpoint = "tcp://[ip]:[port]"
## To use environment variables (ie, docker-machine), set endpoint = "ENV"
endpoint = "unix:///var/run/docker.sock"
## Set to true to collect Swarm metrics(desired_replicas, running_replicas)
## Note: configure this in one of the manager nodes in a Swarm cluster.
## configuring in multiple Swarm managers results in duplication of metrics.
gather_services = false
## Only collect metrics for these containers. Values will be appended to
## container_name_include.
## Deprecated (1.4.0), use container_name_include
container_names = []
## Set the source tag for the metrics to the container ID hostname, eg first 12 chars
source_tag = false
## Containers to include and exclude. Collect all if empty. Globs accepted.
container_name_include = []
container_name_exclude = []
## Container states to include and exclude. Globs accepted.
## When empty only containers in the "running" state will be captured.
# container_state_include = []
# container_state_exclude = []
## Objects to include for disk usage query
## Allowed values are "container", "image", "volume"
## When empty disk usage is excluded
storage_objects = []
## Timeout for docker list, info, and stats commands
timeout = "5s"
## Whether to report for each container per-device blkio (8:0, 8:1...),
## network (eth0, eth1, ...) and cpu (cpu0, cpu1, ...) stats or not.
## Usage of this setting is discouraged since it will be deprecated in favor of 'perdevice_include'.
## Default value is 'true' for backwards compatibility, please set it to 'false' so that 'perdevice_include' setting
## is honored.
perdevice = true
## Specifies for which classes a per-device metric should be issued
## Possible values are 'cpu' (cpu0, cpu1, ...), 'blkio' (8:0, 8:1, ...) and 'network' (eth0, eth1, ...)
## Please note that this setting has no effect if 'perdevice' is set to 'true'
# perdevice_include = ["cpu"]
## Whether to report for each container total blkio and network stats or not.
## Usage of this setting is discouraged since it will be deprecated in favor of 'total_include'.
## Default value is 'false' for backwards compatibility, please set it to 'true' so that 'total_include' setting
## is honored.
total = false
## Specifies for which classes a total metric should be issued. Total is an aggregated of the 'perdevice' values.
## Possible values are 'cpu', 'blkio' and 'network'
## Total 'cpu' is reported directly by Docker daemon, and 'network' and 'blkio' totals are aggregated by this plugin.
## Please note that this setting has no effect if 'total' is set to 'false'
# total_include = ["cpu", "blkio", "network"]
## docker labels to include and exclude as tags. Globs accepted.
## Note that an empty array for both will include all labels as tags
docker_label_include = []
docker_label_exclude = []
## Which environment variables should we use as a tag
tag_env = ["JAVA_HOME", "HEAP_SIZE"]
## Optional TLS Config
# tls_ca = "/etc/telegraf/ca.pem"
# tls_cert = "/etc/telegraf/cert.pem"
# tls_key = "/etc/telegraf/key.pem"
## Use TLS but skip chain & host verification
# insecure_skip_verify = false
SQLite
[[outputs.sql]]
## Database driver
## Valid options: mssql (Microsoft SQL Server), mysql (MySQL), pgx (Postgres),
## sqlite (SQLite3), snowflake (snowflake.com), clickhouse (ClickHouse)
driver = "sqlite"
## Data source name
## For SQLite, the DSN is a filename or URL with the scheme "file:".
## Example: "file:/path/to/telegraf.db?cache=shared"
data_source_name = "file:/path/to/telegraf.db?cache=shared"
## Timestamp column name
timestamp_column = "timestamp"
## Table creation template
## Available template variables:
## {TABLE} - table name as a quoted identifier
## {TABLELITERAL} - table name as a quoted string literal
## {COLUMNS} - column definitions (list of quoted identifiers and types)
table_template = "CREATE TABLE {TABLE} ({COLUMNS})"
## Table existence check template
## Available template variables:
## {TABLE} - table name as a quoted identifier
table_exists_template = "SELECT 1 FROM {TABLE} LIMIT 1"
## Initialization SQL (optional)
init_sql = ""
## Maximum amount of time a connection may be idle. "0s" means connections are never closed due to idle time.
connection_max_idle_time = "0s"
## Maximum amount of time a connection may be reused. "0s" means connections are never closed due to age.
connection_max_lifetime = "0s"
## Maximum number of connections in the idle connection pool. 0 means unlimited.
connection_max_idle = 2
## Maximum number of open connections to the database. 0 means unlimited.
connection_max_open = 0
## Metric type to SQL type conversion
## The values on the left are the data types Telegraf has and the values on the right are the SQL types used when writing to SQLite.
#[outputs.sql.convert]
# integer = "INT"
# real = "DOUBLE"
# text = "TEXT"
# timestamp = "TIMESTAMP"
# defaultvalue = "TEXT"
# unsigned = "UNSIGNED"
# bool = "BOOL"
输入和输出集成示例
Docker
-
监控容器化应用程序的性能:使用 Docker 输入插件来跟踪 Docker 容器中运行的应用程序的 CPU、内存、磁盘 I/O 和网络活动。 通过收集这些指标,DevOps 团队可以主动管理资源分配、排除性能瓶颈,并确保跨不同环境的最佳应用程序性能。
-
与 Kubernetes 集成:利用此插件收集由 Kubernetes 编排的 Docker 容器的指标。 通过过滤掉不必要的 Kubernetes 标签并专注于关键指标,团队可以简化其监控解决方案并创建仪表板,以深入了解 Kubernetes 集群中运行的微服务的整体健康状况。
-
容量规划和资源优化:使用 Docker 输入插件收集的指标来执行 Docker 部署的容量规划。 分析使用模式有助于识别未充分利用的资源和过度配置的容器,从而根据实际使用趋势指导扩展或缩减的决策。
-
容器异常的自动警报:根据通过 Docker 插件收集的指标设置警报规则,以通知团队资源使用量或服务中断的异常峰值。 这种主动监控方法有助于维护服务可靠性并优化容器化应用程序的性能。
SQLite
- 本地监控存储:配置插件以将指标写入本地 SQLite 数据库文件。 这非常适合不需要设置全面数据库服务器的轻量级部署。
- 嵌入式应用程序:使用 SQLite 作为边缘设备中嵌入式应用程序的后端,受益于其基于文件的架构和最低的资源要求。
- 快速设置进行测试:利用 SQLite 的易用性,快速设置 Telegraf 指标收集的测试环境,而无需外部数据库服务。
- 自定义模式管理:如果您需要特定的列类型或索引,请调整表创建模板以预定义您的模式,从而确保与您的应用程序需求兼容。
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