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|
#{{ if not .Values.disableSdncSdncDbhost }}
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
name: sdnc-dbhost
namespace: "{{ .Values.nsPrefix }}-sdnc"
spec:
serviceName: "dbhost"
replicas: {{ .Values.numberOfDbReplicas }}
selector:
matchLabels:
app: sdnc-dbhost
template:
metadata:
labels:
app: sdnc-dbhost
name: sdnc-dbhost
spec:
initContainers:
- name: init-mysql
image: {{ .Values.image.mysql }}
imagePullPolicy: {{ .Values.pullPolicy }}
command:
- bash
- "-c"
- |
set -ex
# Generate mysql server-id from pod ordinal index.
[[ `hostname` =~ -([0-9]+)$ ]] || exit 1
ordinal=${BASH_REMATCH[1]}
echo BASH_REMATCH=${BASH_REMATCH}
echo [mysqld] > /mnt/conf.d/server-id.cnf
# Add an offset to avoid reserved server-id=0 value.
echo server-id=$((100 + $ordinal)) >> /mnt/conf.d/server-id.cnf
# Copy appropriate conf.d files from config-map to emptyDir.
if [[ $ordinal -eq 0 ]]; then
cp /mnt/config-map/master.cnf /mnt/conf.d/
else
cp /mnt/config-map/slave.cnf /mnt/conf.d/
fi
volumeMounts:
- name: conf
mountPath: /mnt/conf.d
- name: config-map
mountPath: /mnt/config-map
- name: clone-mysql
image: {{ .Values.image.xtrabackup }}
env:
- name: MYSQL_ROOT_PASSWORD
value: openECOMP1.0
command:
- bash
- "-c"
- |
set -ex
# Skip the clone if data already exists.
[[ -d /var/lib/mysql/mysql ]] && exit 0
# Skip the clone on master (ordinal index 0).
[[ `hostname` =~ -([0-9]+)$ ]] || exit 1
ordinal=${BASH_REMATCH[1]}
echo ${BASH_REMATCH}
[[ $ordinal -eq 0 ]] && exit 0
# Clone data from previous peer.
ncat --recv-only sdnc-dbhost-$(($ordinal-1)).dbhost.{{ .Values.nsPrefix }}-sdnc 3307 | xbstream -x -C /var/lib/mysql
# Prepare the backup.
xtrabackup --user=root --password=$MYSQL_ROOT_PASSWORD --prepare --target-dir=/var/lib/mysql
ls -l /var/lib/mysql
volumeMounts:
- name: sdnc-data
mountPath: /var/lib/mysql
subPath: mysql
- name: conf
mountPath: /etc/mysql/conf.d
containers:
- env:
- name: MYSQL_ROOT_PASSWORD
value: openECOMP1.0
- name: MYSQL_ROOT_HOST
value: '%'
- name: MYSQL_ALLOW_EMPTY_PASSWORD
value: "0"
image: {{ .Values.image.mysql }}
imagePullPolicy: {{ .Values.pullPolicy }}
name: sdnc-db-container
volumeMounts:
- mountPath: /var/lib/mysql
name: sdnc-data
subPath: mysql
- name: conf
mountPath: /etc/mysql/conf.d
ports:
- containerPort: 3306
resources:
requests:
cpu: 500m
memory: 1Gi
livenessProbe:
exec:
command: ["mysqladmin", "ping"]
initialDelaySeconds: 30
periodSeconds: 10
timeoutSeconds: 5
readinessProbe:
tcpSocket:
port: 3306
initialDelaySeconds: 5
periodSeconds: 10
- name: xtrabackup
image: {{ .Values.image.xtrabackup }}
env:
- name: MYSQL_ROOT_PASSWORD
value: openECOMP1.0
ports:
- name: xtrabackup
containerPort: 3307
command:
- bash
- "-c"
- |
set -ex
cd /var/lib/mysql
ls -l
# Determine binlog position of cloned data, if any.
if [[ -f xtrabackup_slave_info ]]; then
echo "Inside xtrabackup_slave_info"
# XtraBackup already generated a partial "CHANGE MASTER TO" query
# because we're cloning from an existing slave.
mv xtrabackup_slave_info change_master_to.sql.in
# Ignore xtrabackup_binlog_info in this case (it's useless).
rm -f xtrabackup_binlog_info
elif [[ -f xtrabackup_binlog_info ]]; then
echo "Inside xtrabackup_binlog_info"
# We're cloning directly from master. Parse binlog position.
[[ `cat xtrabackup_binlog_info` =~ ^(.*?)[[:space:]]+(.*?)$ ]] || exit 1
rm xtrabackup_binlog_info
echo "CHANGE MASTER TO MASTER_LOG_FILE='${BASH_REMATCH[1]}',\
MASTER_LOG_POS=${BASH_REMATCH[2]}" > change_master_to.sql.in
fi
# Check if we need to complete a clone by starting replication.
if [[ -f change_master_to.sql.in ]]; then
echo "Waiting for mysqld to be ready (accepting connections)"
[[ `hostname` =~ -([0-9]+)$ ]] || exit 1
ordinal=${BASH_REMATCH[1]}
echo $ordinal
until mysql --user=root --password=$MYSQL_ROOT_PASSWORD -h 127.0.0.1 -e "SELECT 1"; do sleep 1; done
echo "Initializing replication from clone position"
# In case of container restart, attempt this at-most-once.
mv change_master_to.sql.in change_master_to.sql.orig
mysql --user=root --password=$MYSQL_ROOT_PASSWORD -h 127.0.0.1 <<EOF
$(<change_master_to.sql.orig),
MASTER_HOST="sdnc-dbhost-0.dbhost.{{ .Values.nsPrefix }}-sdnc",
MASTER_USER="root",
MASTER_PASSWORD="$MYSQL_ROOT_PASSWORD",
MASTER_CONNECT_RETRY=10;
START SLAVE;
EOF
fi
# Start a server to send backups when requested by peers.
exec ncat --listen --keep-open --send-only --max-conns=1 3307 -c \
"xtrabackup --user=root --password=$MYSQL_ROOT_PASSWORD --backup --slave-info --stream=xbstream --host=127.0.0.1"
volumeMounts:
- name: sdnc-data
mountPath: /var/lib/mysql
subPath: mysql
- name: conf
mountPath: /etc/mysql/conf.d
resources:
requests:
cpu: 100m
memory: 100Mi
volumes:
- name: conf
emptyDir: {}
- name: config-map
configMap:
name: mysql
- name: localtime
hostPath:
path: /etc/localtime
volumeClaimTemplates:
- metadata:
name: sdnc-data
annotations:
volume.beta.kubernetes.io/storage-class: "{{ .Values.nsPrefix }}-sdnc-data"
spec:
accessModes: ["ReadWriteMany"]
resources:
requests:
storage: 1Gi
#{{ end }}
|
