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Chapter 6. 3scale backup and restore

This section provides you, as the administrator of a Red Hat 3scale API Management installation, the information needed to:

Set up the backup procedures for persistent data
Perform a restore from backup of the persistent data

In case of a failure with one or more of the MySQL databases, you will be able to restore 3scale correctly to its previous operational state.

6.1. Prerequisites
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A 3scale 2.7 instance. For more information about how to install 3scale, see Installing 3scale on OpenShift.
An OpenShift Container Platform 4 user account with one of the following roles in the OpenShift cluster:
- cluster-admin
- admin
- edit
For more information about supported configurations, see the Red Hat 3scale API Management Supported Configurations page.

Note

A user with an edit cluster role locally binded in the namespace of a 3scale installation can perform backup and restore procedures.

6.2. Persistent volumes
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In a 3scale deployment on OpenShift:

A persistent volume (PV) provided to the cluster by the underlying infrastructure.
Storage service external to the cluster. This can be in the same data center or elsewhere.

6.3. Considerations
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The backup and restore procedures for persistent data vary depending on the storage type in use. To ensure the backups and restores preserve data consistency, it is not sufficient to backup the underlying PVs for a database. For example, do not capture only partial writes and partial transactions. Use the database’s backup mechanisms instead.

Some parts of the data are synchronized between different components. One copy is considered the source of truth for the data set. The other is a copy that is not modified locally, but synchronized from the source of truth. In these cases, upon completion, the source of truth should be restored, and copies in other components synchronized from it.

6.4. Using data sets
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This section explains in more detail about different data sets in the different persistent stores, their purpose, the storage type used, and whether or not it is the source of truth.

The full state of a 3scale deployment is stored across the following DeploymentConfig objects and their PVs:

Expand

Name	Description
system-mysql	MySQL database (`mysql-storage`)
system-storage	Volume for Files
backend-redis	Redis database (`backend-redis-storage`)
system-redis	Redis database (`system-redis-storage`)

6.4.1. Defining system-mysql
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system-mysql is a relational database which stores information about users, accounts, APIs, plans, and more, in the 3scale Admin Console.

A subset of this information related to services is synchronized to the Backend component and stored in backend-redis. system-mysql is the source of truth for this information.

6.4.2. Defining system-storage
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Note

System can be scaled horizontally with multiple pods uploading and reading said static files, hence the need for a ReadWriteMany (RWX) PersistentVolume.

system-storage stores files to be read and written by the System component.

They fall into two categories:

Configuration files read by the System component at run-time
Static files, for example, HTML, CSS, JS, uploaded to system by its CMS feature, for the purpose of creating a Developer Portal

6.4.3. Defining backend-redis
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backend-redis contains multiple data sets used by the Backend component:

Usages: This is API usage information aggregated by Backend. It is used by Backend for rate-limiting decisions and by System to display analytics information in the UI or via API.
Config: This is configuration information about services, rate-limits, and more, that is synchronized from System via an internal API. This is not the source of truth of this information, however System and system-mysql is.
Queues: This is queues of background jobs to be executed by worker processes. These are ephemeral and are deleted once processed.

6.4.4. Defining system-redis
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system-redis contains queues for jobs to be processed in background. These are ephemeral and are deleted once processed.

6.5. Backup procedures
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The following commands are used to back up and archive system databases.

6.5.1. Backing up system-mysql
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Execute MySQL Backup Command:

oc rsh $(oc get pods -l 'deploymentConfig=system-mysql' -o json | jq -r '.items[0].metadata.name') bash -c 'export MYSQL_PWD=${MYSQL_ROOT_PASSWORD}; mysqldump --single-transaction -hsystem-mysql -uroot system' | gzip > system-mysql-backup.gz

oc rsh $(oc get pods -l 'deploymentConfig=system-mysql' -o json | jq -r '.items[0].metadata.name') bash -c 'export MYSQL_PWD=${MYSQL_ROOT_PASSWORD}; mysqldump --single-transaction -hsystem-mysql -uroot system' | gzip > system-mysql-backup.gz

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6.5.2. Backing up system-storage
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Archive the system-storage files to another storage:

oc rsync $(oc get pods -l 'deploymentConfig=system-app' -o json | jq '.items[0].metadata.name' -r):/opt/system/public/system ./local/dir

oc rsync $(oc get pods -l 'deploymentConfig=system-app' -o json | jq '.items[0].metadata.name' -r):/opt/system/public/system ./local/dir

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6.5.3. Backing up backend-redis
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Backup the dump.rdb file from redis:

oc cp $(oc get pods -l 'deploymentConfig=backend-redis' -o json | jq '.items[0].metadata.name' -r):/var/lib/redis/data/dump.rdb ./backend-redis-dump.rdb

oc cp $(oc get pods -l 'deploymentConfig=backend-redis' -o json | jq '.items[0].metadata.name' -r):/var/lib/redis/data/dump.rdb ./backend-redis-dump.rdb

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6.5.4. Backing up system-redis
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Backup the dump.rdb file from redis:

oc cp $(oc get pods -l 'deploymentConfig=system-redis' -o json | jq '.items[0].metadata.name' -r):/var/lib/redis/data/dump.rdb ./system-redis-dump.rdb

oc cp $(oc get pods -l 'deploymentConfig=system-redis' -o json | jq '.items[0].metadata.name' -r):/var/lib/redis/data/dump.rdb ./system-redis-dump.rdb

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6.5.5. Backing up zync-database
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Backup the zync_production database:

oc rsh $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq -r '.items[0].metadata.name') bash -c 'pg_dump zync_production' | gzip > zync-database-backup.gz

oc rsh $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq -r '.items[0].metadata.name') bash -c 'pg_dump zync_production' | gzip > zync-database-backup.gz

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6.5.6. Backing up OpenShift secrets and ConfigMaps
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The following is the list of commands for OpenShift secrets and ConfigMaps:

6.5.6.1. OpenShift secrets
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oc get secrets system-smtp -o json > system-smtp.json
oc get secrets system-seed -o json > system-seed.json
oc get secrets system-database -o json > system-database.json
oc get secrets backend-internal-api -o json > backend-internal-api.json
oc get secrets system-events-hook -o json > system-events-hook.json
oc get secrets system-app -o json > system-app.json
oc get secrets system-recaptcha -o json > system-recaptcha.json
oc get secrets system-redis -o json > system-redis.json
oc get secrets zync -o json > zync.json
oc get secrets system-master-apicast -o json > system-master-apicast.json

oc get secrets system-smtp -o json > system-smtp.json
oc get secrets system-seed -o json > system-seed.json
oc get secrets system-database -o json > system-database.json
oc get secrets backend-internal-api -o json > backend-internal-api.json
oc get secrets system-events-hook -o json > system-events-hook.json
oc get secrets system-app -o json > system-app.json
oc get secrets system-recaptcha -o json > system-recaptcha.json
oc get secrets system-redis -o json > system-redis.json
oc get secrets zync -o json > zync.json
oc get secrets system-master-apicast -o json > system-master-apicast.json

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6.5.6.2. ConfigMaps
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oc get configmaps system-environment -o json > system-environment.json
oc get configmaps apicast-environment -o json > apicast-environment.json

oc get configmaps system-environment -o json > system-environment.json
oc get configmaps apicast-environment -o json > apicast-environment.json

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6.6. Procedures to restore databases
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You can use the following commands to restore system databases after a system failure has occurred.

Important

Prevent record creation by scaling down pods like system-app or disabling routes.

6.6.1. Restoring a template-based deployment
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Use the following steps to restore a template-based deployment.

Procedure

Restore ConfigMaps before creating deploying template:
```
oc apply -f smtp.json
```
```
oc apply -f smtp.json
```
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Template parameters will be read from copied secrets and configmaps:

oc new-app --file /opt/amp/templates/amp.yml \
    --param APP_LABEL=$(cat system-environment.json | jq -r '.metadata.labels.app') \
    --param TENANT_NAME=$(cat system-seed.json | jq -r '.data.TENANT_NAME' | base64 -d) \
    --param SYSTEM_DATABASE_USER=$(cat system-database.json | jq -r '.data.DB_USER' | base64 -d) \
    --param SYSTEM_DATABASE_PASSWORD=$(cat system-database.json | jq -r '.data.DB_PASSWORD' | base64 -d) \
    --param SYSTEM_DATABASE=$(cat system-database.json | jq -r '.data.URL' | base64 -d | cut -d '/' -f4) \
    --param SYSTEM_DATABASE_ROOT_PASSWORD=$(cat system-database.json | jq -r '.data.URL' | base64 -d | awk -F '[:@]' '{print $3}') \
    --param WILDCARD_DOMAIN=$(cat system-environment.json | jq -r '.data.THREESCALE_SUPERDOMAIN') \
    --param SYSTEM_BACKEND_USERNAME=$(cat backend-internal-api.json | jq '.data.username' -r | base64 -d) \
    --param SYSTEM_BACKEND_PASSWORD=$(cat backend-internal-api.json | jq '.data.password' -r | base64 -d) \
    --param SYSTEM_BACKEND_SHARED_SECRET=$(cat system-events-hook.json | jq -r '.data.PASSWORD' | base64 -d) \
    --param SYSTEM_APP_SECRET_KEY_BASE=$(cat system-app.json | jq -r '.data.SECRET_KEY_BASE' | base64 -d) \
    --param ADMIN_PASSWORD=$(cat system-seed.json | jq -r '.data.ADMIN_PASSWORD' | base64 -d) \
    --param ADMIN_USERNAME=$(cat system-seed.json | jq -r '.data.ADMIN_USER' | base64 -d) \
    --param ADMIN_EMAIL=$(cat system-seed.json | jq -r '.data.ADMIN_EMAIL' | base64 -d) \
    --param ADMIN_ACCESS_TOKEN=$(cat system-seed.json | jq -r '.data.ADMIN_ACCESS_TOKEN' | base64 -d) \
    --param MASTER_NAME=$(cat system-seed.json | jq -r '.data.MASTER_DOMAIN' | base64 -d) \
    --param MASTER_USER=$(cat system-seed.json | jq -r '.data.MASTER_USER' | base64 -d) \
    --param MASTER_PASSWORD=$(cat system-seed.json | jq -r '.data.MASTER_PASSWORD' | base64 -d) \
    --param MASTER_ACCESS_TOKEN=$(cat system-seed.json | jq -r '.data.MASTER_ACCESS_TOKEN' | base64 -d) \
    --param RECAPTCHA_PUBLIC_KEY="$(cat system-recaptcha.json | jq -r '.data.PUBLIC_KEY' | base64 -d)" \
    --param RECAPTCHA_PRIVATE_KEY="$(cat system-recaptcha.json | jq -r '.data.PRIVATE_KEY' | base64 -d)" \
    --param SYSTEM_REDIS_URL=$(cat system-redis.json | jq -r '.data.URL' | base64 -d) \
    --param SYSTEM_MESSAGE_BUS_REDIS_URL="$(cat system-redis.json | jq -r '.data.MESSAGE_BUS_URL' | base64 -d)" \
    --param SYSTEM_REDIS_NAMESPACE="$(cat system-redis.json | jq -r '.data.NAMESPACE' | base64 -d)" \
    --param SYSTEM_MESSAGE_BUS_REDIS_NAMESPACE="$(cat system-redis.json | jq -r '.data.MESSAGE_BUS_NAMESPACE' | base64 -d)" \
    --param ZYNC_DATABASE_PASSWORD=$(cat zync.json | jq -r '.data.ZYNC_DATABASE_PASSWORD' | base64 -d) \
    --param ZYNC_SECRET_KEY_BASE=$(cat zync.json | jq -r '.data.SECRET_KEY_BASE' | base64 -d) \
    --param ZYNC_AUTHENTICATION_TOKEN=$(cat zync.json | jq -r '.data.ZYNC_AUTHENTICATION_TOKEN' | base64 -d) \
    --param APICAST_ACCESS_TOKEN=$(cat system-master-apicast.json | jq -r '.data.ACCESS_TOKEN' | base64 -d) \
    --param APICAST_MANAGEMENT_API=$(cat apicast-environment.json | jq -r '.data.APICAST_MANAGEMENT_API') \
    --param APICAST_OPENSSL_VERIFY=$(cat apicast-environment.json | jq -r '.data.OPENSSL_VERIFY') \
    --param APICAST_RESPONSE_CODES=$(cat apicast-environment.json | jq -r '.data.APICAST_RESPONSE_CODES') \
    --param APICAST_REGISTRY_URL=$(cat system-environment.json | jq -r '.data.APICAST_REGISTRY_URL')

oc new-app --file /opt/amp/templates/amp.yml \
    --param APP_LABEL=$(cat system-environment.json | jq -r '.metadata.labels.app') \
    --param TENANT_NAME=$(cat system-seed.json | jq -r '.data.TENANT_NAME' | base64 -d) \
    --param SYSTEM_DATABASE_USER=$(cat system-database.json | jq -r '.data.DB_USER' | base64 -d) \
    --param SYSTEM_DATABASE_PASSWORD=$(cat system-database.json | jq -r '.data.DB_PASSWORD' | base64 -d) \
    --param SYSTEM_DATABASE=$(cat system-database.json | jq -r '.data.URL' | base64 -d | cut -d '/' -f4) \
    --param SYSTEM_DATABASE_ROOT_PASSWORD=$(cat system-database.json | jq -r '.data.URL' | base64 -d | awk -F '[:@]' '{print $3}') \
    --param WILDCARD_DOMAIN=$(cat system-environment.json | jq -r '.data.THREESCALE_SUPERDOMAIN') \
    --param SYSTEM_BACKEND_USERNAME=$(cat backend-internal-api.json | jq '.data.username' -r | base64 -d) \
    --param SYSTEM_BACKEND_PASSWORD=$(cat backend-internal-api.json | jq '.data.password' -r | base64 -d) \
    --param SYSTEM_BACKEND_SHARED_SECRET=$(cat system-events-hook.json | jq -r '.data.PASSWORD' | base64 -d) \
    --param SYSTEM_APP_SECRET_KEY_BASE=$(cat system-app.json | jq -r '.data.SECRET_KEY_BASE' | base64 -d) \
    --param ADMIN_PASSWORD=$(cat system-seed.json | jq -r '.data.ADMIN_PASSWORD' | base64 -d) \
    --param ADMIN_USERNAME=$(cat system-seed.json | jq -r '.data.ADMIN_USER' | base64 -d) \
    --param ADMIN_EMAIL=$(cat system-seed.json | jq -r '.data.ADMIN_EMAIL' | base64 -d) \
    --param ADMIN_ACCESS_TOKEN=$(cat system-seed.json | jq -r '.data.ADMIN_ACCESS_TOKEN' | base64 -d) \
    --param MASTER_NAME=$(cat system-seed.json | jq -r '.data.MASTER_DOMAIN' | base64 -d) \
    --param MASTER_USER=$(cat system-seed.json | jq -r '.data.MASTER_USER' | base64 -d) \
    --param MASTER_PASSWORD=$(cat system-seed.json | jq -r '.data.MASTER_PASSWORD' | base64 -d) \
    --param MASTER_ACCESS_TOKEN=$(cat system-seed.json | jq -r '.data.MASTER_ACCESS_TOKEN' | base64 -d) \
    --param RECAPTCHA_PUBLIC_KEY="$(cat system-recaptcha.json | jq -r '.data.PUBLIC_KEY' | base64 -d)" \
    --param RECAPTCHA_PRIVATE_KEY="$(cat system-recaptcha.json | jq -r '.data.PRIVATE_KEY' | base64 -d)" \
    --param SYSTEM_REDIS_URL=$(cat system-redis.json | jq -r '.data.URL' | base64 -d) \
    --param SYSTEM_MESSAGE_BUS_REDIS_URL="$(cat system-redis.json | jq -r '.data.MESSAGE_BUS_URL' | base64 -d)" \
    --param SYSTEM_REDIS_NAMESPACE="$(cat system-redis.json | jq -r '.data.NAMESPACE' | base64 -d)" \
    --param SYSTEM_MESSAGE_BUS_REDIS_NAMESPACE="$(cat system-redis.json | jq -r '.data.MESSAGE_BUS_NAMESPACE' | base64 -d)" \
    --param ZYNC_DATABASE_PASSWORD=$(cat zync.json | jq -r '.data.ZYNC_DATABASE_PASSWORD' | base64 -d) \
    --param ZYNC_SECRET_KEY_BASE=$(cat zync.json | jq -r '.data.SECRET_KEY_BASE' | base64 -d) \
    --param ZYNC_AUTHENTICATION_TOKEN=$(cat zync.json | jq -r '.data.ZYNC_AUTHENTICATION_TOKEN' | base64 -d) \
    --param APICAST_ACCESS_TOKEN=$(cat system-master-apicast.json | jq -r '.data.ACCESS_TOKEN' | base64 -d) \
    --param APICAST_MANAGEMENT_API=$(cat apicast-environment.json | jq -r '.data.APICAST_MANAGEMENT_API') \
    --param APICAST_OPENSSL_VERIFY=$(cat apicast-environment.json | jq -r '.data.OPENSSL_VERIFY') \
    --param APICAST_RESPONSE_CODES=$(cat apicast-environment.json | jq -r '.data.APICAST_RESPONSE_CODES') \
    --param APICAST_REGISTRY_URL=$(cat system-environment.json | jq -r '.data.APICAST_REGISTRY_URL')

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6.6.2. Restoring an operator-based deployment
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Use the following steps to restore operator-based deployments.

Procedure

Install the 3scale operator on OpenShift.

Restore secrets before creating an APIManager resource:

oc apply -f system-smtp.json
oc apply -f system-seed.json
oc apply -f system-database.json
oc apply -f backend-internal-api.json
oc apply -f system-events-hook.json
oc apply -f system-app.json
oc apply -f system-recaptcha.json
oc apply -f system-redis.json
oc apply -f zync.json
oc apply -f system-master-apicast.json

oc apply -f system-smtp.json
oc apply -f system-seed.json
oc apply -f system-database.json
oc apply -f backend-internal-api.json
oc apply -f system-events-hook.json
oc apply -f system-app.json
oc apply -f system-recaptcha.json
oc apply -f system-redis.json
oc apply -f zync.json
oc apply -f system-master-apicast.json

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Restore ConfigMaps before creating an APIManager resource:

oc apply -f system-environment.json
oc apply -f apicast-environment.json

oc apply -f system-environment.json
oc apply -f apicast-environment.json

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Deploy 3scale with the operator using the APIManager custom resource.

6.6.3. Restoring system-mysql
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Copy the MySQL dump to the system-mysql pod:

oc cp ./system-mysql-backup.gz $(oc get pods -l 'deploymentConfig=system-mysql' -o json | jq '.items[0].metadata.name' -r):/var/lib/mysql

oc cp ./system-mysql-backup.gz $(oc get pods -l 'deploymentConfig=system-mysql' -o json | jq '.items[0].metadata.name' -r):/var/lib/mysql

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Decompress the Backup File:

oc rsh $(oc get pods -l 'deploymentConfig=system-mysql' -o json | jq -r '.items[0].metadata.name') bash -c 'gzip -d ${HOME}/system-mysql-backup.gz'

oc rsh $(oc get pods -l 'deploymentConfig=system-mysql' -o json | jq -r '.items[0].metadata.name') bash -c 'gzip -d ${HOME}/system-mysql-backup.gz'

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Restore the MySQL DB Backup file:

oc rsh $(oc get pods -l 'deploymentConfig=system-mysql' -o json | jq -r '.items[0].metadata.name') bash -c 'export MYSQL_PWD=${MYSQL_ROOT_PASSWORD}; mysql -hsystem-mysql -uroot system < ${HOME}/system-mysql-backup'

oc rsh $(oc get pods -l 'deploymentConfig=system-mysql' -o json | jq -r '.items[0].metadata.name') bash -c 'export MYSQL_PWD=${MYSQL_ROOT_PASSWORD}; mysql -hsystem-mysql -uroot system < ${HOME}/system-mysql-backup'

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6.6.4. Restoring system-storage
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Restore the Backup file to system-storage:

oc rsync ./local/dir/system/ $(oc get pods -l 'deploymentConfig=system-app' -o json | jq '.items[0].metadata.name' -r):/opt/system/public/system

oc rsync ./local/dir/system/ $(oc get pods -l 'deploymentConfig=system-app' -o json | jq '.items[0].metadata.name' -r):/opt/system/public/system

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6.6.5. Restoring zync-database
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Instructions to restore zync-database depend on the deployment type applied for 3scale.

Template-based deployments

Scale down the zync DeploymentConfig to 0 pods:

oc scale dc zync --replicas=0
oc scale dc zync-que --replicas=0

oc scale dc zync --replicas=0
oc scale dc zync-que --replicas=0

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Copy the Zync database dump to the zync-database pod:

oc cp ./zync-database-backup.gz $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq '.items[0].metadata.name' -r):/var/lib/pgsql/

oc cp ./zync-database-backup.gz $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq '.items[0].metadata.name' -r):/var/lib/pgsql/

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Decompress the backup file:

oc rsh $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq -r '.items[0].metadata.name') bash -c 'gzip -d ${HOME}/zync-database-backup.gz'

oc rsh $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq -r '.items[0].metadata.name') bash -c 'gzip -d ${HOME}/zync-database-backup.gz'

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Restore the PostgreSQL DB backup file:

oc rsh $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq -r '.items[0].metadata.name') bash -c 'psql -f ${HOME}/zync-database-backup'

oc rsh $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq -r '.items[0].metadata.name') bash -c 'psql -f ${HOME}/zync-database-backup'

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Restore to the original count of replicas, by replacing ${ZYNC_REPLICAS} with the number of replicas, in the commands below:

oc scale dc zync --replicas=${ZYNC_REPLICAS}
oc scale dc zync-que --replicas=${ZYNC_REPLICAS}

oc scale dc zync --replicas=${ZYNC_REPLICAS}
oc scale dc zync-que --replicas=${ZYNC_REPLICAS}

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Operator-based deployments

Follow the instructions under Deploying 3scale using the operator, in particular Deploying the APIManager custom resource to redeploy your 3scale instance.

Store the number of replicas, by replacing ${DEPLOYMENT_NAME} with the name you defined when you created your 3scale deployment:
```
ZYNC_SPEC=`oc get APIManager/${DEPLOYMENT_NAME} -o json | jq -r '.spec.zync'`
```
```
ZYNC_SPEC=`oc get APIManager/${DEPLOYMENT_NAME} -o json | jq -r '.spec.zync'`
```
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Scale down the zync DeploymentConfig to 0 pods:

oc patch APIManager/${DEPLOYMENT_NAME} --type merge -p '{"spec": {"zync": {"appSpec": {"replicas": 0}, "queSpec": {"replicas": 0}}}}'

oc patch APIManager/${DEPLOYMENT_NAME} --type merge -p '{"spec": {"zync": {"appSpec": {"replicas": 0}, "queSpec": {"replicas": 0}}}}'

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Copy the Zync database dump to the zync-database pod:

oc cp ./zync-database-backup.gz $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq '.items[0].metadata.name' -r):/var/lib/pgsql/

oc cp ./zync-database-backup.gz $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq '.items[0].metadata.name' -r):/var/lib/pgsql/

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Decompress the backup file:

oc rsh $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq -r '.items[0].metadata.name') bash -c 'gzip -d ${HOME}/zync-database-backup.gz'

oc rsh $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq -r '.items[0].metadata.name') bash -c 'gzip -d ${HOME}/zync-database-backup.gz'

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Restore the PostgreSQL DB backup file:

oc rsh $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq -r '.items[0].metadata.name') bash -c 'psql -f ${HOME}/zync-database-backup'

oc rsh $(oc get pods -l 'deploymentConfig=zync-database' -o json | jq -r '.items[0].metadata.name') bash -c 'psql -f ${HOME}/zync-database-backup'

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Restore to the original count of replicas:

oc patch APIManager ${DEPLOYMENT_NAME} --type merge -p '{"spec": {"zync":'"${ZYNC_SPEC}"'}}'

oc patch APIManager ${DEPLOYMENT_NAME} --type merge -p '{"spec": {"zync":'"${ZYNC_SPEC}"'}}'

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6.6.6. Restoring 3scale options with backend-redis and system-redis
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By restoring 3scale, you will restore backend-redis and system-redis. These components have the following functions:

*backend-redis: The database that supports application authentication and rate limiting in 3scale. It is also used for statistics storage and temporary job storage. *system-redis: Provides temporary storage for background jobs for 3scale and is also used as a message bus for Ruby processes of system-app pods.

The backend-redis component

The backend-redis component has two databases, data and queues. In default 3scale deployment, data and queues are deployed in the Redis database, but in different logical database indexes /0 and /1. Restoring data database runs without any issues, however restoring queues database can lead to duplicated jobs.

Regarding duplication of jobs, in 3scale the backend workers process background jobs in a matter of milliseconds. If backend-redis fails 30 seconds after the last database snapshot and you try to restore it, the background jobs that happened during those 30 seconds are performed twice because backend does not have a system in place to avoid duplication.

In this scenario, you must restore the backup as the /0 database index contains data that is not saved anywhere else. Restoring /0 database index means that you must also restore the /1 database index since one cannot be stored without the other.

When you choose to separate databases on different servers and not one database in different indexes, the size of the queue will be approximately zero, so it is preferable not to restore backups and lose a few background jobs. This will be the case in a 3scale Hosted setup you will need to therefore apply different backup and restore strategies for both.

The `system-redis`component

The majority of the 3scale system background jobs are idempotent, that is, identical requests return an identical result no matter how many times you run them.

The following is a list of examples of events handled by background jobs in system:

Notification jobs such as plan trials about to expire, credit cards about to expire, activation reminders, plan changes, invoice state changes, PDF reports.
Billing such as invoicing and charging.
Deletion of complex objects.
Backend synchronization jobs.
Indexation jobs, for example with sphinx.
Sanitisation jobs, for example invoice IDs.
Janitorial tasks such as purging audits, user sessions, expired tokens, log entries, suspending inactive accounts.
Traffic updates.
Proxy configuration change monitoring and proxy deployments.
Background signup jobs,
Zync jobs such as Single sign-on (SSO) synchronization, routes creation.

If you are restoring the above list of background jobs, 3scale’s system maintains the state of each restored job. It is important to check the integrity of the system after the restoration is complete.

6.6.7. Ensuring information consistency between Backend and System
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After restoring backend-redis a sync of the Config information from System should be forced to ensure the information in Backend is consistent with that in System, which is the source of truth.

6.6.7.1. Managing the deployment configuration for backend-redis
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These steps are intended for running instances of backend-redis.

Edit the redis-config configmap:
```
oc edit configmap redis-config
```
```
oc edit configmap redis-config
```
Copy to Clipboard Toggle word wrap
Comment SAVE commands in the redis-config configmap:
```
#save 900 1
 #save 300 10
 #save 60 10000
```
```
 #save 900 1
 #save 300 10
 #save 60 10000
```
Copy to Clipboard Toggle word wrap
Set appendonly to no in the redis-config configmap:
```
appendonly no
```
```
appendonly no
```
Copy to Clipboard Toggle word wrap
Redeploy backend-redis to load the new configurations:
```
oc rollout latest dc/backend-redis
```
```
oc rollout latest dc/backend-redis
```
Copy to Clipboard Toggle word wrap
Check the status of the rollout to ensure it has finished:
```
oc rollout status dc/backend-redis
```
```
oc rollout status dc/backend-redis
```
Copy to Clipboard Toggle word wrap

Rename the dump.rdb file:

oc rsh $(oc get pods -l 'deploymentConfig=backend-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'mv ${HOME}/data/dump.rdb ${HOME}/data/dump.rdb-old'

oc rsh $(oc get pods -l 'deploymentConfig=backend-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'mv ${HOME}/data/dump.rdb ${HOME}/data/dump.rdb-old'

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Rename the appendonly.aof file:

oc rsh $(oc get pods -l 'deploymentConfig=backend-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'mv ${HOME}/data/appendonly.aof ${HOME}/data/appendonly.aof-old'

oc rsh $(oc get pods -l 'deploymentConfig=backend-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'mv ${HOME}/data/appendonly.aof ${HOME}/data/appendonly.aof-old'

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Move the Backup file to the POD:

oc cp ./backend-redis-dump.rdb $(oc get pods -l 'deploymentConfig=backend-redis' -o json | jq '.items[0].metadata.name' -r):/var/lib/redis/data/dump.rdb

oc cp ./backend-redis-dump.rdb $(oc get pods -l 'deploymentConfig=backend-redis' -o json | jq '.items[0].metadata.name' -r):/var/lib/redis/data/dump.rdb

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Toggle word wrap

Redeploy backend-redis to load the backup:
```
oc rollout latest dc/backend-redis
```
```
oc rollout latest dc/backend-redis
```
Copy to Clipboard Toggle word wrap
Check the status of the rollout to ensure it has finished:
```
oc rollout status dc/backend-redis
```
```
oc rollout status dc/backend-redis
```
Copy to Clipboard Toggle word wrap

Create the appendonly file:

oc rsh $(oc get pods -l 'deploymentConfig=backend-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'redis-cli BGREWRITEAOF'

oc rsh $(oc get pods -l 'deploymentConfig=backend-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'redis-cli BGREWRITEAOF'

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Toggle word wrap

After a while, ensure that the AOF rewrite is complete:

oc rsh $(oc get pods -l 'deploymentConfig=backend-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'redis-cli info' | grep aof_rewrite_in_progress

oc rsh $(oc get pods -l 'deploymentConfig=backend-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'redis-cli info' | grep aof_rewrite_in_progress

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While aof_rewrite_in_progress = 1, the execution is in progress.
Check periodically until aof_rewrite_in_progress = 0. Zero indicates that the execution is complete.

Edit the redis-config configmap:
```
oc edit configmap redis-config
```
```
oc edit configmap redis-config
```
Copy to Clipboard Toggle word wrap
Uncomment SAVE commands in the redis-config configmap:
```
 save 900 1
 save 300 10
 save 60 10000
```
```
 save 900 1
 save 300 10
 save 60 10000
```
Copy to Clipboard Toggle word wrap
Set appendonly to yes in the redis-config configmap:
```
appendonly yes
```
```
appendonly yes
```
Copy to Clipboard Toggle word wrap
Redeploy backend-redis to reload the default configurations:
```
oc rollout latest dc/backend-redis
```
```
oc rollout latest dc/backend-redis
```
Copy to Clipboard Toggle word wrap
Check the status of the rollout to ensure it has finished:
```
oc rollout status dc/backend-redis
```
```
oc rollout status dc/backend-redis
```
Copy to Clipboard Toggle word wrap

6.6.7.2. Managing the deployment configuration for system-redis
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These steps are intended for running instances of system-redis.

Edit the redis-config configmap:
```
oc edit configmap redis-config
```
```
oc edit configmap redis-config
```
Copy to Clipboard Toggle word wrap
Comment SAVE commands in the redis-config configmap:
```
#save 900 1
 #save 300 10
 #save 60 10000
```
```
 #save 900 1
 #save 300 10
 #save 60 10000
```
Copy to Clipboard Toggle word wrap
Set appendonly to no in the redis-config configmap:
```
appendonly no
```
```
appendonly no
```
Copy to Clipboard Toggle word wrap
Redeploy system-redis to load the new configurations:
```
oc rollout latest dc/system-redis
```
```
oc rollout latest dc/system-redis
```
Copy to Clipboard Toggle word wrap
Check the status of the rollout to ensure it has finished:
```
oc rollout status dc/system-redis
```
```
oc rollout status dc/system-redis
```
Copy to Clipboard Toggle word wrap

Rename the dump.rdb file:

oc rsh $(oc get pods -l 'deploymentConfig=system-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'mv ${HOME}/data/dump.rdb ${HOME}/data/dump.rdb-old'

oc rsh $(oc get pods -l 'deploymentConfig=system-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'mv ${HOME}/data/dump.rdb ${HOME}/data/dump.rdb-old'

Copy to Clipboard

Toggle word wrap

Rename the appendonly.aof file:

oc rsh $(oc get pods -l 'deploymentConfig=system-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'mv ${HOME}/data/appendonly.aof ${HOME}/data/appendonly.aof-old'

oc rsh $(oc get pods -l 'deploymentConfig=system-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'mv ${HOME}/data/appendonly.aof ${HOME}/data/appendonly.aof-old'

Copy to Clipboard

Toggle word wrap

Move the Backup file to the POD:

oc cp ./system-redis-dump.rdb $(oc get pods -l 'deploymentConfig=system-redis' -o json | jq '.items[0].metadata.name' -r):/var/lib/redis/data/dump.rdb

oc cp ./system-redis-dump.rdb $(oc get pods -l 'deploymentConfig=system-redis' -o json | jq '.items[0].metadata.name' -r):/var/lib/redis/data/dump.rdb

Copy to Clipboard

Toggle word wrap

Redeploy system-redis to load the backup:
```
oc rollout latest dc/system-redis
```
```
oc rollout latest dc/system-redis
```
Copy to Clipboard Toggle word wrap
Check the status of the rollout to ensure it has finished:
```
oc rollout status dc/system-redis
```
```
oc rollout status dc/system-redis
```
Copy to Clipboard Toggle word wrap

Create the appendonly file:

oc rsh $(oc get pods -l 'deploymentConfig=system-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'redis-cli BGREWRITEAOF'

oc rsh $(oc get pods -l 'deploymentConfig=system-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'redis-cli BGREWRITEAOF'

Copy to Clipboard

Toggle word wrap

After a while, ensure that the AOF rewrite is complete:

oc rsh $(oc get pods -l 'deploymentConfig=system-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'redis-cli info' | grep aof_rewrite_in_progress

oc rsh $(oc get pods -l 'deploymentConfig=system-redis' -o json | jq '.items[0].metadata.name' -r) bash -c 'redis-cli info' | grep aof_rewrite_in_progress

Copy to Clipboard

Toggle word wrap

While aof_rewrite_in_progress = 1, the execution is in progress.
Check periodically until aof_rewrite_in_progress = 0. Zero indicates that the execution is complete.

Edit the redis-config configmap:
```
oc edit configmap redis-config
```
```
oc edit configmap redis-config
```
Copy to Clipboard Toggle word wrap
Uncomment SAVE commands in the redis-config configmap:
```
 save 900 1
 save 300 10
 save 60 10000
```
```
 save 900 1
 save 300 10
 save 60 10000
```
Copy to Clipboard Toggle word wrap
Set appendonly to yes in the redis-config configmap:
```
appendonly yes
```
```
appendonly yes
```
Copy to Clipboard Toggle word wrap
Redeploy system-redis to reload the default configurations:
```
oc rollout latest dc/system-redis
```
```
oc rollout latest dc/system-redis
```
Copy to Clipboard Toggle word wrap
Check the status of the rollout to ensure it has finished:
```
oc rollout status dc/system-redis
```
```
oc rollout status dc/system-redis
```
Copy to Clipboard Toggle word wrap

6.6.8. Restoring backend-worker
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Restore to the latest version of backend-worker:
```
oc rollout latest dc/backend-worker
```
```
oc rollout latest dc/backend-worker
```
Copy to Clipboard Toggle word wrap
Check the status of the rollout to ensure it has finished:
```
oc rollout status dc/backend-worker
```
```
oc rollout status dc/backend-worker
```
Copy to Clipboard Toggle word wrap

6.6.9. Restoring system-app
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Restore to the latest version of system-app:
```
oc rollout latest dc/system-app
```
```
oc rollout latest dc/system-app
```
Copy to Clipboard Toggle word wrap
Check the status of the rollout to ensure it has finished:
```
oc rollout status dc/system-app
```
```
oc rollout status dc/system-app
```
Copy to Clipboard Toggle word wrap

6.6.10. Restoring system-sidekiq
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Restore to the latest version of system-sidekiq:
```
oc rollout latest dc/system-sidekiq
```
```
oc rollout latest dc/system-sidekiq
```
Copy to Clipboard Toggle word wrap
Check the status of the rollout to ensure it has finished:
```
oc rollout status dc/system-sidekiq
```
```
oc rollout status dc/system-sidekiq
```
Copy to Clipboard Toggle word wrap

6.6.11. Restoring system-sphinx
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Restore to the latest version of system-sphinx:
```
oc rollout latest dc/system-sphinx
```
```
oc rollout latest dc/system-sphinx
```
Copy to Clipboard Toggle word wrap
Check the status of the rollout to ensure it has finished:
```
oc rollout status dc/system-sphinx
```
```
oc rollout status dc/system-sphinx
```
Copy to Clipboard Toggle word wrap

6.6.12. Restoring OpenShift routes managed by Zync
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Force Zync to recreate missing OpenShift routes:

oc rsh $(oc get pods -l 'deploymentConfig=system-sidekiq' -o json | jq '.items[0].metadata.name' -r) bash -c 'bundle exec rake zync:resync:domains'

oc rsh $(oc get pods -l 'deploymentConfig=system-sidekiq' -o json | jq '.items[0].metadata.name' -r) bash -c 'bundle exec rake zync:resync:domains'

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Chapter 6. 3scale backup and restore

6.1. PrerequisitesCopiar o linkLink copiado para a área de transferência!

6.2. Persistent volumesCopiar o linkLink copiado para a área de transferência!

6.3. ConsiderationsCopiar o linkLink copiado para a área de transferência!

6.4. Using data setsCopiar o linkLink copiado para a área de transferência!

6.4.1. Defining system-mysqlCopiar o linkLink copiado para a área de transferência!

6.4.2. Defining system-storageCopiar o linkLink copiado para a área de transferência!

6.4.3. Defining backend-redisCopiar o linkLink copiado para a área de transferência!

6.4.4. Defining system-redisCopiar o linkLink copiado para a área de transferência!

6.5. Backup proceduresCopiar o linkLink copiado para a área de transferência!

6.5.1. Backing up system-mysqlCopiar o linkLink copiado para a área de transferência!

6.5.2. Backing up system-storageCopiar o linkLink copiado para a área de transferência!

6.5.3. Backing up backend-redisCopiar o linkLink copiado para a área de transferência!

6.5.4. Backing up system-redisCopiar o linkLink copiado para a área de transferência!

6.5.5. Backing up zync-databaseCopiar o linkLink copiado para a área de transferência!

6.5.6. Backing up OpenShift secrets and ConfigMapsCopiar o linkLink copiado para a área de transferência!

6.5.6.1. OpenShift secretsCopiar o linkLink copiado para a área de transferência!

6.5.6.2. ConfigMapsCopiar o linkLink copiado para a área de transferência!

6.6. Procedures to restore databasesCopiar o linkLink copiado para a área de transferência!

6.6.1. Restoring a template-based deploymentCopiar o linkLink copiado para a área de transferência!

6.6.2. Restoring an operator-based deploymentCopiar o linkLink copiado para a área de transferência!

6.6.3. Restoring system-mysqlCopiar o linkLink copiado para a área de transferência!

6.6.4. Restoring system-storageCopiar o linkLink copiado para a área de transferência!

6.6.5. Restoring zync-databaseCopiar o linkLink copiado para a área de transferência!

6.6.6. Restoring 3scale options with backend-redis and system-redisCopiar o linkLink copiado para a área de transferência!

6.6.7. Ensuring information consistency between Backend and SystemCopiar o linkLink copiado para a área de transferência!

6.6.7.1. Managing the deployment configuration for backend-redisCopiar o linkLink copiado para a área de transferência!

6.6.7.2. Managing the deployment configuration for system-redisCopiar o linkLink copiado para a área de transferência!

6.6.8. Restoring backend-workerCopiar o linkLink copiado para a área de transferência!

6.6.9. Restoring system-appCopiar o linkLink copiado para a área de transferência!

6.6.10. Restoring system-sidekiqCopiar o linkLink copiado para a área de transferência!

6.6.11. Restoring system-sphinxCopiar o linkLink copiado para a área de transferência!

6.6.12. Restoring OpenShift routes managed by ZyncCopiar o linkLink copiado para a área de transferência!

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6.1. Prerequisites
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6.2. Persistent volumes
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6.3. Considerations
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6.4. Using data sets
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6.4.1. Defining system-mysql
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6.4.2. Defining system-storage
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6.4.3. Defining backend-redis
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6.4.4. Defining system-redis
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6.5. Backup procedures
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6.5.1. Backing up system-mysql
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6.5.2. Backing up system-storage
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6.5.3. Backing up backend-redis
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6.5.4. Backing up system-redis
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6.5.5. Backing up zync-database
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6.5.6. Backing up OpenShift secrets and ConfigMaps
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6.5.6.1. OpenShift secrets
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6.5.6.2. ConfigMaps
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6.6. Procedures to restore databases
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6.6.1. Restoring a template-based deployment
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6.6.2. Restoring an operator-based deployment
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6.6.3. Restoring system-mysql
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6.6.4. Restoring system-storage
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6.6.5. Restoring zync-database
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6.6.6. Restoring 3scale options with backend-redis and system-redis
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6.6.7. Ensuring information consistency between Backend and System
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6.6.7.1. Managing the deployment configuration for backend-redis
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6.6.7.2. Managing the deployment configuration for system-redis
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6.6.8. Restoring backend-worker
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6.6.9. Restoring system-app
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6.6.10. Restoring system-sidekiq
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6.6.11. Restoring system-sphinx
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6.6.12. Restoring OpenShift routes managed by Zync
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