Config LMDB Expansion and Backup Recovery

# Cause of failure

The configuration requires more space than specified by LMDB, which is currently 4 GB by default.

# Impact of failure

Configuration synchronization is no longer possible.

# Troubleshooting

# LMDB Expansion

Please note: the space of LMDB can only be expanded, not reduced.

• Modify the nginx.conf configuration: /usr/local/oredge-node/conf/nginx.conf

lua_config_map_size     4096m;

Change the size to the desired value, e.g. 8192m (8GB).

• Modify the config.ini configuration: /usr/local/oredge-node/conf/config.ini

[config]
lmdb_size = 4096m

Change the size to the desired value, e.g. 8192m (8GB).

• Delete the old LMDB file

rm -f /usr/local/oredge-node/data/config.lmdb/*

• Restart OpenResty Edge Node

systemctl restart oredge-node

• Check if the configuration is in effect

ls -lh /usr/local/oredge-node/data/config.lmdb

When you see the size change to the configured size (e.g. 8GB), the configuration is in effect.

# LMDB Backup

• Enter the [Gateway Cluster] page and click [Backup and Restore].

• Make a backup

Just wait for it to finish.

# LMDB Recovery

• Execute on the OpenResty Edge Node

sudo bash /usr/local/oredge-node/bin/restore_lmdb.sh