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opencloud/konnectd/docs/getting-started.md
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Getting Started 2018-05-02T00:00:00+00:00 10 https://github.com/owncloud/ocis-konnectd edit/master/docs getting-started.md

{{< toc >}}

Installation

So far we are offering two different variants for the installation. You can choose between Docker or pre-built binaries which are stored on our download mirrors and GitHub releases. Maybe we will also provide system packages for the major distributions later if we see the need for it.

Docker

Docker images for ocis-reva are hosted on https://hub.docker.com/r/owncloud/ocis-konnectd.

The latest tag always reflects the current master branch.

docker pull owncloud/ocis-konnectd

Binaries

The pre-built binaries for different platforms are downloadable at https://download.owncloud.com/ocis/ocis-konnectd/ . Specific releases are organized in separate folders. They are in sync which every release tag on GitHub. The binaries from the current master branch can be found in https://download.owncloud.com/ocis/ocis-konnectd/testing/

curl https://download.owncloud.com/ocis/ocis-konnectd/1.0.0-beta1/ocis-konnectd-1.0.0-beta1-darwin-amd64 --output ocis-konnectd
chmod +x ocis-konnectd
./ocis-konnectd server

Usage

The program provides a few sub-commands on execution. The available configuration methods have already been mentioned above. Generally you can always see a formated help output if you execute the binary via ocis-konnectd --help.

Server

The server command is used to start the http and debug server on two addresses within a single process. The http server is serving the general webservice while the debug server is used for health check, readiness check and to server the metrics mentioned below. For further help please execute:

{{< highlight txt >}} ocis-konnectd server --help {{< / highlight >}}

Health

The health command is used to execute a health check, if the exit code equals zero the service should be up and running, if the exist code is greater than zero the service is not in a healthy state. Generally this command is used within our Docker containers, it could also be used within Kubernetes.

{{< highlight txt >}} ocis-konnectd health --help {{< / highlight >}}

Metrics

This service provides some Prometheus metrics through the debug endpoint, you can optionally secure the metrics endpoint by some random token, which got to be configured through one of the flag --debug-token or the environment variable KONNECTD_DEBUG_TOKEN mentioned above. By default the metrics endpoint is bound to http://0.0.0.0:9134/metrics.

go_gc_duration_seconds
A summary of the GC invocation durations
go_gc_duration_seconds_sum
A summary of the GC invocation durations
go_gc_duration_seconds_count
A summary of the GC invocation durations
go_goroutines
Number of goroutines that currently exist
go_info
Information about the Go environment
go_memstats_alloc_bytes
Number of bytes allocated and still in use
go_memstats_alloc_bytes_total
Total number of bytes allocated, even if freed
go_memstats_buck_hash_sys_bytes
Number of bytes used by the profiling bucket hash table
go_memstats_frees_total
Total number of frees
go_memstats_gc_cpu_fraction
The fraction of this program's available CPU time used by the GC since the program started
go_memstats_gc_sys_bytes
Number of bytes used for garbage collection system metadata
go_memstats_heap_alloc_bytes
Number of heap bytes allocated and still in use
go_memstats_heap_idle_bytes
Number of heap bytes waiting to be used
go_memstats_heap_inuse_bytes
Number of heap bytes that are in use
go_memstats_heap_objects
Number of allocated objects
go_memstats_heap_released_bytes
Number of heap bytes released to OS
go_memstats_heap_sys_bytes
Number of heap bytes obtained from system
go_memstats_last_gc_time_seconds
Number of seconds since 1970 of last garbage collection
go_memstats_lookups_total
Total number of pointer lookups
go_memstats_mallocs_total
Total number of mallocs
go_memstats_mcache_inuse_bytes
Number of bytes in use by mcache structures
go_memstats_mcache_sys_bytes
Number of bytes used for mcache structures obtained from system
go_memstats_mspan_inuse_bytes
Number of bytes in use by mspan structures
go_memstats_mspan_sys_bytes
Number of bytes used for mspan structures obtained from system
go_memstats_next_gc_bytes
Number of heap bytes when next garbage collection will take place
go_memstats_other_sys_bytes
Number of bytes used for other system allocations
go_memstats_stack_inuse_bytes
Number of bytes in use by the stack allocator
go_memstats_stack_sys_bytes
Number of bytes obtained from system for stack allocator
go_memstats_sys_bytes
Number of bytes obtained from system
go_threads
Number of OS threads created
promhttp_metric_handler_requests_in_flight
Current number of scrapes being served
promhttp_metric_handler_requests_total
Total number of scrapes by HTTP status code