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Support POSTGRES_HOST_AUTH_METHOD=peer #778

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Support POSTGRES_HOST_AUTH_METHOD=peer #778

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18 changes: 15 additions & 3 deletions docker-entrypoint.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -78,6 +78,10 @@ docker_init_database_dir() {
set -- --waldir "$POSTGRES_INITDB_WALDIR" "$@"
fi

if [ 'peer' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
set -- --auth=peer "$@"
fi

eval 'initdb --username="$POSTGRES_USER" --pwfile=<(echo "$POSTGRES_PASSWORD") '"$POSTGRES_INITDB_ARGS"' "$@"'

# unset/cleanup "nss_wrapper" bits
Expand All @@ -88,7 +92,7 @@ docker_init_database_dir() {
}

# print large warning if POSTGRES_PASSWORD is long
# error if both POSTGRES_PASSWORD is empty and POSTGRES_HOST_AUTH_METHOD is not 'trust'
# error if both POSTGRES_PASSWORD is empty and POSTGRES_HOST_AUTH_METHOD is not 'trust' or 'peer'
# print large warning if POSTGRES_HOST_AUTH_METHOD is set to 'trust'
# assumes database is not set up, ie: [ -z "$DATABASE_ALREADY_EXISTS" ]
docker_verify_minimum_env() {
Expand All @@ -106,13 +110,16 @@ docker_verify_minimum_env() {

EOWARN
fi
if [ -z "$POSTGRES_PASSWORD" ] && [ 'trust' != "$POSTGRES_HOST_AUTH_METHOD" ]; then
if [ -z "$POSTGRES_PASSWORD" ] && [ 'trust' != "$POSTGRES_HOST_AUTH_METHOD" ] && [ 'peer' != "$POSTGRES_HOST_AUTH_METHOD" ]; then
# The - option suppresses leading tabs but *not* spaces. :)
cat >&2 <<-'EOE'
Error: Database is uninitialized and superuser password is not specified.
You must specify POSTGRES_PASSWORD to a non-empty value for the
superuser. For example, "-e POSTGRES_PASSWORD=password" on "docker run".

You may use "POSTGRES_HOST_AUTH_METHOD=peer" to allow
local connections identified by OS username without a password.

You may also use "POSTGRES_HOST_AUTH_METHOD=trust" to allow all
connections without a password. This is *not* recommended.

Expand Down Expand Up @@ -221,8 +228,9 @@ pg_setup_hba_conf() {
if [ 'trust' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
echo '# warning trust is enabled for all connections'
echo '# see https://www.postgresql.org/docs/12/auth-trust.html'
elif [ 'peer' != "$POSTGRES_HOST_AUTH_METHOD" ]; then
echo "host all all all $POSTGRES_HOST_AUTH_METHOD"
fi
echo "host all all all $POSTGRES_HOST_AUTH_METHOD"
} >> "$PGDATA/pg_hba.conf"
}

Expand Down Expand Up @@ -312,6 +320,10 @@ _main() {
fi
fi

if [ 'peer' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
set -- "$@" -c listen_addresses=''
fi

exec "$@"
}

Expand Down