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From 88d6ceb18e17c5a18bafb5092ae0c22241b212df Mon Sep 17 00:00:00 2001
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From: Mark Reynolds <mreynolds@redhat.com>
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Date: Mon, 1 Nov 2021 14:01:11 -0400
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Subject: [PATCH 08/12] Issue 4978 - make installer robust
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Description:  When run in a container the server can fail to start
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              because the installer sets the db_home_dir to /dev/shm,
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              but in containers the default size of /dev/shm is too
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              small for libdb. We should detect if we are in a
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              container and not set db_home_dir to /dev/shm.
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              During instance removal, if an instance was not properly
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              created then it can not be removed either. Make the
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              uninstall more robust to accept some errors and continue
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              removing the instance.
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relates: https://github.com/389ds/389-ds-base/issues/4978
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Reviewed by: firstyear & tbordaz(Thanks!)
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---
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 src/lib389/lib389/instance/setup.py | 9 +++++++++
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 src/lib389/lib389/utils.py          | 5 ++++-
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 2 files changed, 13 insertions(+), 1 deletion(-)
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diff --git a/src/lib389/lib389/instance/setup.py b/src/lib389/lib389/instance/setup.py
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index be6854af8..7b0147cf9 100644
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--- a/src/lib389/lib389/instance/setup.py
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+++ b/src/lib389/lib389/instance/setup.py
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@@ -731,6 +731,15 @@ class SetupDs(object):
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             for line in template_dse.readlines():
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                 dse += line.replace('%', '{', 1).replace('%', '}', 1)
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+        # Check if we are in a container, if so don't use /dev/shm for the db home dir
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+        # as containers typically don't allocate enough space for dev/shm and we don't
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+        # want to unexpectedly break the server after an upgrade
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+        container_result = subprocess.run(["systemd-detect-virt", "-c"], capture_output=True)
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+        if container_result.returncode == 0:
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+            # In a container, set the db_home_dir to the db path
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+            self.log.debug("Container detected setting db home directory to db directory.")
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+            slapd['db_home_dir'] = slapd['db_dir']
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+
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         with open(os.path.join(slapd['config_dir'], 'dse.ldif'), 'w') as file_dse:
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             dse_fmt = dse.format(
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                 schema_dir=slapd['schema_dir'],
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diff --git a/src/lib389/lib389/utils.py b/src/lib389/lib389/utils.py
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index 5ba0c6676..c63b4d0ee 100644
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--- a/src/lib389/lib389/utils.py
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+++ b/src/lib389/lib389/utils.py
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@@ -266,6 +266,8 @@ def selinux_label_port(port, remove_label=False):
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     :type remove_label: boolean
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     :raises: ValueError: Error message
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     """
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+    if port is None:
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+        return
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     try:
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         import selinux
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     except ImportError:
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@@ -662,7 +664,8 @@ def isLocalHost(host_name):
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         Uses gethostbyname()
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     """
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     # first see if this is a "well known" local hostname
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-    if host_name == 'localhost' or \
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+    if host_name is None or \
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+       host_name == 'localhost' or \
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        host_name == 'localhost.localdomain' or \
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        host_name == socket.gethostname():
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         return True
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-- 
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2.31.1
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