DevAndTools/docker-postgres-backup-local
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Merge pull request #158 from prodrigestivill/initial-backup

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Add support to perform an initial backup on startup
This commit is contained in:
Pau RE
2024-09-04 13:32:31 +02:00
committed by GitHub
parent 2cbc34e8e6 8aa2ae7104
commit 23f24caba8
8 changed files with 95 additions and 69 deletions
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README.md
+2
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@@ -51,6 +51,7 @@ services:
# - POSTGRES_PASSWORD_FILE=/run/secrets/db_password <-- alternative for POSTGRES_PASSWORD (to use with docker secrets)
- POSTGRES_EXTRA_OPTS=-Z1 --schema=public --blobs
- SCHEDULE=@daily
- BACKUP_ON_START=TRUE
- BACKUP_KEEP_DAYS=7
- BACKUP_KEEP_WEEKS=4
- BACKUP_KEEP_MONTHS=6
@@ -75,6 +76,7 @@ Most variables are the same as in the [official postgres image](https://hub.dock
|--|--|
| BACKUP_DIR | Directory to save the backup at. Defaults to `/backups`. |
| BACKUP_SUFFIX | Filename suffix to save the backup. Defaults to `.sql.gz`. |
| BACKUP_ON_START | If set to `TRUE` performs an backup on each container start or restart. Defaults to `FALSE`. |
| BACKUP_KEEP_DAYS | Number of daily backups to keep before removal. Defaults to `7`. |
| BACKUP_KEEP_WEEKS | Number of weekly backups to keep before removal. Defaults to `4`. |
| BACKUP_KEEP_MONTHS | Number of monthly backups to keep before removal. Defaults to `6`. |
alpine.Dockerfile
+5 -4
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@@ -1,7 +1,7 @@
ARG BASETAG=alpine
FROM postgres:$BASETAG
ARG GOCRONVER=v0.0.10
ARG GOCRONVER=v0.0.11
ARG TARGETOS
ARG TARGETARCH
RUN set -x \
@@ -21,6 +21,7 @@ ENV POSTGRES_DB="**None**" \
POSTGRES_EXTRA_OPTS="-Z1" \
POSTGRES_CLUSTER="FALSE" \
SCHEDULE="@daily" \
BACKUP_ON_START="FALSE" \
BACKUP_DIR="/backups" \
BACKUP_SUFFIX=".sql.gz" \
BACKUP_LATEST_TYPE="symlink" \
@@ -36,12 +37,12 @@ ENV POSTGRES_DB="**None**" \
WEBHOOK_EXTRA_ARGS=""
COPY hooks /hooks
COPY backup.sh /backup.sh
COPY backup.sh env.sh init.sh /
VOLUME /backups
ENTRYPOINT ["/bin/sh", "-c"]
CMD ["exec /usr/local/bin/go-cron -s \"$SCHEDULE\" -p \"$HEALTHCHECK_PORT\" -- /backup.sh"]
ENTRYPOINT []
CMD ["/init.sh"]
HEALTHCHECK --interval=5m --timeout=3s \
CMD curl -f "http://localhost:$HEALTHCHECK_PORT/" || exit 1
backup.sh
+1 -58
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@@ -9,64 +9,7 @@ if [ -d "${HOOKS_DIR}" ]; then
trap 'on_error' ERR
fi
if [ "${POSTGRES_DB}" = "**None**" -a "${POSTGRES_DB_FILE}" = "**None**" ]; then
echo "You need to set the POSTGRES_DB or POSTGRES_DB_FILE environment variable."
exit 1
fi
if [ "${POSTGRES_HOST}" = "**None**" ]; then
if [ -n "${POSTGRES_PORT_5432_TCP_ADDR}" ]; then
POSTGRES_HOST=${POSTGRES_PORT_5432_TCP_ADDR}
POSTGRES_PORT=${POSTGRES_PORT_5432_TCP_PORT}
else
echo "You need to set the POSTGRES_HOST environment variable."
exit 1
fi
fi
if [ "${POSTGRES_USER}" = "**None**" -a "${POSTGRES_USER_FILE}" = "**None**" ]; then
echo "You need to set the POSTGRES_USER or POSTGRES_USER_FILE environment variable."
exit 1
fi
if [ "${POSTGRES_PASSWORD}" = "**None**" -a "${POSTGRES_PASSWORD_FILE}" = "**None**" -a "${POSTGRES_PASSFILE_STORE}" = "**None**" ]; then
echo "You need to set the POSTGRES_PASSWORD or POSTGRES_PASSWORD_FILE or POSTGRES_PASSFILE_STORE environment variable or link to a container named POSTGRES."
exit 1
fi
#Process vars
if [ "${POSTGRES_DB_FILE}" = "**None**" ]; then
POSTGRES_DBS=$(echo "${POSTGRES_DB}" | tr , " ")
elif [ -r "${POSTGRES_DB_FILE}" ]; then
POSTGRES_DBS=$(cat "${POSTGRES_DB_FILE}")
else
echo "Missing POSTGRES_DB_FILE file."
exit 1
fi
if [ "${POSTGRES_USER_FILE}" = "**None**" ]; then
export PGUSER="${POSTGRES_USER}"
elif [ -r "${POSTGRES_USER_FILE}" ]; then
export PGUSER=$(cat "${POSTGRES_USER_FILE}")
else
echo "Missing POSTGRES_USER_FILE file."
exit 1
fi
if [ "${POSTGRES_PASSWORD_FILE}" = "**None**" -a "${POSTGRES_PASSFILE_STORE}" = "**None**" ]; then
export PGPASSWORD="${POSTGRES_PASSWORD}"
elif [ -r "${POSTGRES_PASSWORD_FILE}" ]; then
export PGPASSWORD=$(cat "${POSTGRES_PASSWORD_FILE}")
elif [ -r "${POSTGRES_PASSFILE_STORE}" ]; then
export PGPASSFILE="${POSTGRES_PASSFILE_STORE}"
else
echo "Missing POSTGRES_PASSWORD_FILE or POSTGRES_PASSFILE_STORE file."
exit 1
fi
export PGHOST="${POSTGRES_HOST}"
export PGPORT="${POSTGRES_PORT}"
KEEP_MINS=${BACKUP_KEEP_MINS}
KEEP_DAYS=${BACKUP_KEEP_DAYS}
KEEP_WEEKS=`expr $(((${BACKUP_KEEP_WEEKS} * 7) + 1))`
KEEP_MONTHS=`expr $(((${BACKUP_KEEP_MONTHS} * 31) + 1))`
source "$(dirname "$0")/env.sh"
# Pre-backup hook
if [ -d "${HOOKS_DIR}" ]; then
debian.Dockerfile
+5 -4
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@@ -1,7 +1,7 @@
ARG BASETAG=latest
FROM postgres:$BASETAG
ARG GOCRONVER=v0.0.10
ARG GOCRONVER=v0.0.11
ARG TARGETOS
ARG TARGETARCH
@@ -35,6 +35,7 @@ ENV POSTGRES_DB="**None**" \
POSTGRES_EXTRA_OPTS="-Z1" \
POSTGRES_CLUSTER="FALSE" \
SCHEDULE="@daily" \
BACKUP_ON_START="FALSE" \
BACKUP_DIR="/backups" \
BACKUP_SUFFIX=".sql.gz" \
BACKUP_LATEST_TYPE="symlink" \
@@ -50,12 +51,12 @@ ENV POSTGRES_DB="**None**" \
WEBHOOK_EXTRA_ARGS=""
COPY hooks /hooks
COPY backup.sh /backup.sh
COPY backup.sh env.sh init.sh /
VOLUME /backups
ENTRYPOINT ["/bin/sh", "-c"]
CMD ["exec /usr/local/bin/go-cron -s \"$SCHEDULE\" -p \"$HEALTHCHECK_PORT\" -- /backup.sh"]
ENTRYPOINT []
CMD ["/init.sh"]
HEALTHCHECK --interval=5m --timeout=3s \
CMD curl -f "http://localhost:$HEALTHCHECK_PORT/" || exit 1
docker-bake.hcl
+2 -2
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@@ -15,12 +15,12 @@ variable "BUILD_REVISION" {
}
target "debian" {
args = {"GOCRONVER" = "v0.0.10"}
args = {"GOCRONVER" = "v0.0.11"}
dockerfile = "debian.Dockerfile"
}
target "alpine" {
args = {"GOCRONVER" = "v0.0.10"}
args = {"GOCRONVER" = "v0.0.11"}
dockerfile = "alpine.Dockerfile"
}
env.sh
Executable
+66
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@@ -0,0 +1,66 @@
#!/usr/bin/env bash
# Pre-validate the environment
if [ "${POSTGRES_DB}" = "**None**" -a "${POSTGRES_DB_FILE}" = "**None**" ]; then
echo "You need to set the POSTGRES_DB or POSTGRES_DB_FILE environment variable."
exit 1
fi
if [ "${POSTGRES_HOST}" = "**None**" ]; then
if [ -n "${POSTGRES_PORT_5432_TCP_ADDR}" ]; then
POSTGRES_HOST=${POSTGRES_PORT_5432_TCP_ADDR}
POSTGRES_PORT=${POSTGRES_PORT_5432_TCP_PORT}
else
echo "You need to set the POSTGRES_HOST environment variable."
exit 1
fi
fi
if [ "${POSTGRES_USER}" = "**None**" -a "${POSTGRES_USER_FILE}" = "**None**" ]; then
echo "You need to set the POSTGRES_USER or POSTGRES_USER_FILE environment variable."
exit 1
fi
if [ "${POSTGRES_PASSWORD}" = "**None**" -a "${POSTGRES_PASSWORD_FILE}" = "**None**" -a "${POSTGRES_PASSFILE_STORE}" = "**None**" ]; then
echo "You need to set the POSTGRES_PASSWORD or POSTGRES_PASSWORD_FILE or POSTGRES_PASSFILE_STORE environment variable or link to a container named POSTGRES."
exit 1
fi
#Process vars
if [ "${POSTGRES_DB_FILE}" = "**None**" ]; then
POSTGRES_DBS=$(echo "${POSTGRES_DB}" | tr , " ")
elif [ -r "${POSTGRES_DB_FILE}" ]; then
POSTGRES_DBS=$(cat "${POSTGRES_DB_FILE}")
else
echo "Missing POSTGRES_DB_FILE file."
exit 1
fi
if [ "${POSTGRES_USER_FILE}" = "**None**" ]; then
export PGUSER="${POSTGRES_USER}"
elif [ -r "${POSTGRES_USER_FILE}" ]; then
export PGUSER=$(cat "${POSTGRES_USER_FILE}")
else
echo "Missing POSTGRES_USER_FILE file."
exit 1
fi
if [ "${POSTGRES_PASSWORD_FILE}" = "**None**" -a "${POSTGRES_PASSFILE_STORE}" = "**None**" ]; then
export PGPASSWORD="${POSTGRES_PASSWORD}"
elif [ -r "${POSTGRES_PASSWORD_FILE}" ]; then
export PGPASSWORD=$(cat "${POSTGRES_PASSWORD_FILE}")
elif [ -r "${POSTGRES_PASSFILE_STORE}" ]; then
export PGPASSFILE="${POSTGRES_PASSFILE_STORE}"
else
echo "Missing POSTGRES_PASSWORD_FILE or POSTGRES_PASSFILE_STORE file."
exit 1
fi
export PGHOST="${POSTGRES_HOST}"
export PGPORT="${POSTGRES_PORT}"
KEEP_MINS=${BACKUP_KEEP_MINS}
KEEP_DAYS=${BACKUP_KEEP_DAYS}
KEEP_WEEKS=`expr $(((${BACKUP_KEEP_WEEKS} * 7) + 1))`
KEEP_MONTHS=`expr $(((${BACKUP_KEEP_MONTHS} * 31) + 1))`
# Validate backup dir
if [ '!' -d "${BACKUP_DIR}" -o '!' -w "${BACKUP_DIR}" -o '!' -x "${BACKUP_DIR}" ]; then
echo "BACKUP_DIR points to a file or folder with insufficient permissions."
exit 1
fi
generate-docker-bake.sh
+1 -1
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@@ -2,7 +2,7 @@
set -e
GOCRONVER="v0.0.10"
GOCRONVER="v0.0.11"
MAIN_TAG="16"
TAGS_EXTRA="15 14 13 12"
PLATFORMS="linux/amd64 linux/arm64 linux/arm/v7 linux/s390x linux/ppc64le"
init.sh
Executable
+13
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@@ -0,0 +1,13 @@
#!/usr/bin/env bash
set -Eeo pipefail
# Prevalidate configuration (don't source)
/env.sh
EXTRA_ARGS=""
# Initial background backup
if [ "${BACKUP_ON_START}" = "TRUE" ]; then
EXTRA_ARGS="-i"
fi
exec /usr/local/bin/go-cron -s "$SCHEDULE" -p "$HEALTHCHECK_PORT" $EXTRA_ARGS -- /backup.sh