artefactual-labs / docker-gearmand

Docker image of gearmand based on Alpine Linux.

gearmand

artefactual/gearmand packages recent versions of gearmand using Alpine Linux as the base image.

Supported tags and respective Dockerfile links

• 1.1.15-alpine (Dockerfile)
• 1.1.16-alpine (Dockerfile)
• 1.1.17-alpine (Dockerfile)
• 1.1.18-alpine (Dockerfile)
• 1.1.19.1-alpine (Dockerfile)
• 1.1.20.1-alpine (Dockerfile)
• 1.1.21.2-alpine, latest (Dockerfile)

See also the official releases page.

Supported gearmand backends

• builtin (default)
• libmemcached
• mysql (using mariadb-dev)
• redis

Usage

Print help:

docker run --rm -i artefactual/gearmand:latest --help

Use redis backend and set verbose level to DEBUG.

docker run --rm -i artefactual/gearmand:latest --queue-type=redis --redis-server=192.168.1.1 --redis-port=6379 --verbose=DEBUG

Environment variables

This image includes an entry point that translates environment strings into configuration attributes. The following is a list of the strings currently supported:

Name	Description	Default
VERBOSE	Logging level	INFO
GEARMAND_PORT	Listen port	4730
QUEUE_TYPE	Persistent queue type to use	builtin
THREADS	Number of I/O threads to use	4
BACKLOG	Number of backlog connections for listen	32
FILE_DESCRIPTORS	Number of file descriptors to allow for the process	Default is max allowed for user
JOB_RETRIES	Number of attempts to run the job before the job server removes it. Default is no limit.	0
ROUND_ROBIN	Assign work in round-robin order per worker connection	0
WORKER_WAKEUP	Number of workers to wakeup for each job received	0
KEEPALIVE	Enable keepalive on sockets	0
KEEPALIVE_IDLE	The duration between two keepalive transmissions in idle condition	30
KEEPALIVE_INTERVAL	The duration between two successive keepalive retransmissions, if acknowledgement to the previous keepalive transmission is not received	10
KEEPALIVE_COUNT	The number of retransmissions to be carried out before declaring that remote end is not available	5
MYSQL_HOST	MySQL server host	localhost
MYSQL_PORT	MySQL server port	3306
MYSQL_USER	MySQL server user	root
MYSQL_PASSWORD	MySQL password
MYSQL_PASSWORD_FILE	Path to file with MySQL password (Docker secrets)
MYSQL_DB	Database to use by Gearman	Gearmand
MYSQL_TABLE	Table to use by Gearman	gearman_queue

You can also inject your version of config file to /etc/gearmand.conf as needed.

Credits

See the list of contributors.

Thanks to @Mararok for the new entry point bringing support for environment variables and secrets.