def run(self):
if not self.package_is_installed("postgresql-9.6"):
logger.warning(
m18n.n("migration_0017_postgresql_96_not_installed"))
return
if not self.package_is_installed("postgresql-11"):
raise YunohostError("migration_0017_postgresql_11_not_installed")
# Make sure there's a 9.6 cluster
try:
self.runcmd("pg_lsclusters | grep -q '^9.6 '")
except Exception:
logger.warning(
"It looks like there's not active 9.6 cluster, so probably don't need to run this migration"
)
return
if not space_used_by_directory(
"/var/lib/postgresql/9.6") > free_space_in_directory(
"/var/lib/postgresql"):
raise YunohostError("migration_0017_not_enough_space",
path="/var/lib/postgresql/")
self.runcmd("systemctl stop postgresql")
self.runcmd(
"LC_ALL=C pg_dropcluster --stop 11 main || true"
) # We do not trigger an exception if the command fails because that probably means cluster 11 doesn't exists, which is fine because it's created during the pg_upgradecluster)
self.runcmd("LC_ALL=C pg_upgradecluster -m upgrade 9.6 main")
self.runcmd("LC_ALL=C pg_dropcluster --stop 9.6 main")
self.runcmd("systemctl start postgresql")
def check_assertions(self):
# Be on stretch (9.x) and yunohost 3.x
# NB : we do both check to cover situations where the upgrade crashed
# in the middle and debian version could be > 9.x but yunohost package
# would still be in 3.x...
if not self.debian_major_version() == 9 \
and not self.yunohost_major_version() == 3:
raise YunohostError("migration_0015_not_stretch")
# Have > 1 Go free space on /var/ ?
if free_space_in_directory("/var/") / (1024**3) < 1.0:
raise YunohostError("migration_0015_not_enough_free_space")
# Check system is up to date
# (but we don't if 'stretch' is already in the sources.list ...
# which means maybe a previous upgrade crashed and we're re-running it)
if " buster " not in read_file("/etc/apt/sources.list"):
tools_update(system=True)
upgradable_system_packages = list(_list_upgradable_apt_packages())
if upgradable_system_packages:
raise YunohostError(
"migration_0015_system_not_fully_up_to_date")