3 files changed, 5 insertions, 6 deletions
diff --git a/cloudinit/distros/debian.py b/cloudinit/distros/debian.py
index 3f0f9d53..16f8d955 100644
--- a/cloudinit/distros/debian.py
+++ b/cloudinit/distros/debian.py
@@ -143,8 +143,7 @@ class Distro(distros.Distro):
             pkgs = []
 
         e = os.environ.copy()
-        # See: http://tiny.cc/kg91fw
-        # Or: http://tiny.cc/mh91fw
+        # See: http://manpages.ubuntu.com/manpages/xenial/man7/debconf.7.html
         e['DEBIAN_FRONTEND'] = 'noninteractive'
 
         wcfg = self.get_option("apt_get_wrapper", APT_GET_WRAPPER)
diff --git a/cloudinit/distros/parsers/hosts.py b/cloudinit/distros/parsers/hosts.py
index 87f164be..64444581 100644
--- a/cloudinit/distros/parsers/hosts.py
+++ b/cloudinit/distros/parsers/hosts.py
@@ -10,8 +10,8 @@ from cloudinit.distros.parsers import chop_comment
 
 
 # See: man hosts
-# or http://unixhelp.ed.ac.uk/CGI/man-cgi?hosts
-# or http://tinyurl.com/6lmox3
+# or https://linux.die.net/man/5/hosts
+# or https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/configtuning-configfiles.html # noqa
 class HostsConf(object):
     def __init__(self, text):
         self._text = text
diff --git a/cloudinit/distros/rhel.py b/cloudinit/distros/rhel.py
index 372c7d0f..1fecb619 100644
--- a/cloudinit/distros/rhel.py
+++ b/cloudinit/distros/rhel.py
@@ -28,7 +28,7 @@ def _make_sysconfig_bool(val):
 
 
 class Distro(distros.Distro):
-    # See: http://tiny.cc/6r99fw
+    # See: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Networking_Guide/sec-Network_Configuration_Using_sysconfig_Files.html # noqa
     clock_conf_fn = "/etc/sysconfig/clock"
     locale_conf_fn = '/etc/sysconfig/i18n'
     systemd_locale_conf_fn = '/etc/locale.conf'
@@ -130,8 +130,8 @@ class Distro(distros.Distro):
             rhel_util.update_sysconfig_file(out_fn, host_cfg)
 
     def _select_hostname(self, hostname, fqdn):
-        # See: http://bit.ly/TwitgL
         # Should be fqdn if we can use it
+        # See: https://www.centos.org/docs/5/html/Deployment_Guide-en-US/ch-sysconfig.html#s2-sysconfig-network # noqa
         if fqdn:
             return fqdn
         return hostname