CODEWITHSUNDEEP
dockerdocker-composemariadbdockerfilegalera
rokpoto.com
rokpoto.com

Reputation: 10720

Can't bootstrap Galera cluster using official Docker MariaDB image

I'm building custom image from official mariadb docker image using the following Dockerfile

FROM mariadb:10.1
COPY custom-docker-entrypoint.sh /custom-docker-entrypoint.sh
ENV MYSQL_ROOT_PASSWORD test
ENV MYSQL_DATABASE scheduler
ENV MYSQL_USER scheduler_user
ENTRYPOINT ["/custom-docker-entrypoint.sh"]

While custom-docker-entrypoint.sh contains

sleep 3600

exec docker-entrypoint.sh mysqld --wsrep-new-cluster

After image is built and run as container, i enter the container, kill the sleep process and mysqld process starts. The problem is that cluster is not bootstrapped.

SHOW GLOBAL STATUS LIKE 'wsrep_%';

returns

Variable_name | Value |
+--------------------------+----------------------+
| wsrep_cluster_conf_id | 18446744073709551615 |
| wsrep_cluster_size | 0 |
| wsrep_cluster_state_uuid | |
| wsrep_cluster_status | Disconnected |
| wsrep_connected | OFF |
| wsrep_local_bf_aborts | 0 |
| wsrep_local_index | 18446744073709551615 |
| wsrep_provider_name | |
| wsrep_provider_vendor | |
| wsrep_provider_version | |
| wsrep_ready | OFF |
| wsrep_thread_count | 0

How to run the Galera cluster correctly using this image? Thanks in advance.

Upvotes: 0

Views: 917

Answers (1)

R_BR
R_BR

Reputation: 11

I added the following sections to my.cnf that is imported into the container, I'm not sure but it seems that some parameters aren't inserted correctly via enviroment variables ( wsrep_on worked , wsrep_provider didn't ).

node1

[galera]
# Mandatory settings
wsrep_on=ON
wsrep_provider=/usr/lib/galera/libgalera_smm.so
wsrep_cluster_address=gcomm://172.x.x.211,172.x.x.210
wsrep-cluster-name=local-test
wsrep_sst_method=rsync
wsrep_node_address="172.x.x.210"
wsrep_sst_auth=wsrep_user:wsrep_passwd

node2

[galera]
# Mandatory settings
wsrep_on=ON
wsrep_provider=/usr/lib/galera/libgalera_smm.so
wsrep_cluster_address=gcomm://172.x.x.211,172.x.x.210
wsrep-cluster-name=local-test
wsrep_sst_method=rsync
wsrep_node_address="172.x.x.211"
wsrep_sst_auth=wsrep_user:wsrep_passwd

Upvotes: 1

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