saxix/lazo

Lazo

Small utility to work with Rancher. It has been developd to be used in CI environments.

Current features:

get infos on running cluster/project/workload
get docker image info
upgrade workload
execute commands in running containers

Install

$ pip install lazo

or using pipx

$ pipx install lazo

Help

$ lazo --help
Usage: lazo [OPTIONS] COMMAND [ARGS]...

Options:
  --version        Show the version and exit.
  --env
  -v, --verbosity  verbosity level
  -q, --quit       no output
  -d, --dry-run    dry-run mode
  --debug          debug mode
  -h, --help       Show this message and exit.

Commands:
  docker
  rancher

Environment varialbles

RANCHER_BASE_URL as --base-url
RANCHER_KEY as --key
RANCHER_SECRET as --secret
RANCHER_CLUSTER as --cluster
RANCHER_PROJECT as --project
RANCHER_INSECURE as --inxecure
DOCKER_REPOSITORY as --repository

You can inspect your default configuration with:

$ lazo --defaults
Env                  Value                                              Origin
repository           https://hub.docker.com/v2
auth
base_url
cluster
insecure             False
project
use_names            False

or list handler environment variables with:

$ lazo --env
Env                  Value
DOCKER_REPOSITORY    -- not set --
RANCHER_AUTH         -- not set --
RANCHER_BASE_URL     -- not set --
RANCHER_CLUSTER      -- not set --
RANCHER_INSECURE     -- not set --
RANCHER_PROJECT      -- not set --
RANCHER_USE_NAMES    -- not set --

Examples

Rancher

get infos on running workload

$ lazo rancher -i -n info -p cluster1:bitcaster -w bitcaster:bitcaster
Workload infos:
Image: bitcaster/bitcaster:0.3.0a15
Command: ['stack']
imagePullPolicy: Always

upgrading workload

$ export RANCHER_KEY=key
$ export RANCHER_SECRET=secret
$ lazo upgrade saxix/devpi:latest \
       --base-url https://rancher.example.com/v3/
       --cluster c-wwk6v
       --project p-xd4dg

use stdin to read credentials

$  cat .pass.txt | lazo --stdin \
    upgrade bitcaster:bitcaster \
    bitcaster/bitcaster:0.3.0a10 \
    --insecure

execute command in running container

$ lazo shell bitcaster:db -- ls -al /var/log
total 432
drwxr-xr-x 1 root        root       4096 Jan  1 01:39 .
drwxr-xr-x 1 root        root       4096 Dec 26 00:00 ..
drwxr-xr-x 1 root        root       4096 Jan  1 01:39 apt
-rw-r--r-- 1 root        root      74886 Jan  1 01:39 dpkg.log
-rw-r--r-- 1 root        root      32000 Jan  1 01:39 faillog
drwxr-xr-x 2 root        root       4096 May 25  2017 sysstat

Docker

list image available tags

$ lazo docker info saxix/devpi
latest
2.3
2.2
2.1
2.0
1.1

get information on image

$ lazo docker info library/python --filter '3\.6.*alpine3.8' --size
3.6-alpine3.8                  26.2MiB
3.6.8-alpine3.8                26.2MiB
3.6.7-alpine3.8                26.2MiB
3.6.6-alpine3.8                26.2MiB

saxix / lazo