[libvirt] [PATCH v3 2/7] conf: Introduce migrate_tls_x509_cert_dir
John Ferlan
jferlan at redhat.com
Fri Mar 17 18:38:56 UTC 2017
Add a new TLS X.509 certificate type - "migrate". This will handle the
creation of a TLS certificate capability (and possibly repository) to
be used for migrations. Similar to chardev's, credentials will be handled
via a libvirt secrets; however, unlike chardev's enablement and usage
will be via a CLI flag instead of a conf flag and a domain XML attribute.
The migrations will also require the client-cert.pem and client-key.pem
files to be present in the clients TLS directory.
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
src/qemu/libvirtd_qemu.aug | 5 +++++
src/qemu/qemu.conf | 37 +++++++++++++++++++++++++++++++++++++
src/qemu/qemu_conf.c | 6 ++++++
src/qemu/qemu_conf.h | 4 ++++
src/qemu/test_libvirtd_qemu.aug.in | 3 +++
5 files changed, 55 insertions(+)
diff --git a/src/qemu/libvirtd_qemu.aug b/src/qemu/libvirtd_qemu.aug
index 82bae9e..e1983d1 100644
--- a/src/qemu/libvirtd_qemu.aug
+++ b/src/qemu/libvirtd_qemu.aug
@@ -54,6 +54,10 @@ module Libvirtd_qemu =
| bool_entry "chardev_tls_x509_verify"
| str_entry "chardev_tls_x509_secret_uuid"
+ let migrate_entry = str_entry "migrate_tls_x509_cert_dir"
+ | bool_entry "migrate_tls_x509_verify"
+ | str_entry "migrate_tls_x509_secret_uuid"
+
let nogfx_entry = bool_entry "nographics_allow_host_audio"
let remote_display_entry = int_entry "remote_display_port_min"
@@ -116,6 +120,7 @@ module Libvirtd_qemu =
| vnc_entry
| spice_entry
| chardev_entry
+ | migrate_entry
| nogfx_entry
| remote_display_entry
| security_entry
diff --git a/src/qemu/qemu.conf b/src/qemu/qemu.conf
index 9925ac9..40bcec3 100644
--- a/src/qemu/qemu.conf
+++ b/src/qemu/qemu.conf
@@ -13,6 +13,11 @@
#
# dh-params.pem - the DH params configuration file
#
+# When using TLS for migrations, the directory must also contain
+#
+# client-cert.pem - the client certificate signed with the ca-cert.pem
+# client-key.pem - the client private key
+#
#default_tls_x509_cert_dir = "/etc/pki/qemu"
@@ -238,6 +243,38 @@
#chardev_tls_x509_secret_uuid = "00000000-0000-0000-0000-000000000000"
+# In order to override the default TLS certificate location for migration
+# certificates, supply a valid path to the certificate directory. If the
+# provided path does not exist then the default_tls_x509_cert_dir path
+# will be used. Once/if a default certificate is enabled/defined, migration
+# will then be able to use the certificate via migration API flags.
+#
+#migrate_tls_x509_cert_dir = "/etc/pki/libvirt-migrate"
+
+
+# The default TLS configuration only uses certificates for the server
+# allowing the client to verify the server's identity and establish
+# an encrypted channel.
+#
+# It is possible to use x509 certificates for authentication too, by
+# issuing a x509 certificate to every client who needs to connect.
+#
+# Enabling this option will reject any client who does not have a
+# certificate signed by the CA in /etc/pki/libvirt-migrate/ca-cert.pem
+#
+#migrate_tls_x509_verify = 1
+
+
+# Uncomment and use the following option to override the default secret
+# UUID provided in the default_tls_x509_secret_uuid parameter.
+#
+# NB This default all-zeros UUID will not work. Replace it with the
+# output from the UUID for the TLS secret from a 'virsh secret-list'
+# command and then uncomment the entry
+#
+#migrate_tls_x509_secret_uuid = "00000000-0000-0000-0000-000000000000"
+
+
# By default, if no graphical front end is configured, libvirt will disable
# QEMU audio output since directly talking to alsa/pulseaudio may not work
# with various security settings. If you know what you're doing, enable
diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
index 9db2bc3..4c271cd 100644
--- a/src/qemu/qemu_conf.c
+++ b/src/qemu/qemu_conf.c
@@ -280,6 +280,7 @@ virQEMUDriverConfigPtr virQEMUDriverConfigNew(bool privileged)
SET_TLS_X509_CERT_DEFAULT(vnc);
SET_TLS_X509_CERT_DEFAULT(spice);
SET_TLS_X509_CERT_DEFAULT(chardev);
+ SET_TLS_X509_CERT_DEFAULT(migrate);
#undef SET_TLS_X509_CERT_DEFAULT
@@ -395,6 +396,9 @@ static void virQEMUDriverConfigDispose(void *obj)
VIR_FREE(cfg->chardevTLSx509certdir);
VIR_FREE(cfg->chardevTLSx509secretUUID);
+ VIR_FREE(cfg->migrateTLSx509certdir);
+ VIR_FREE(cfg->migrateTLSx509secretUUID);
+
while (cfg->nhugetlbfs) {
cfg->nhugetlbfs--;
VIR_FREE(cfg->hugetlbfs[cfg->nhugetlbfs].mnt_dir);
@@ -556,6 +560,8 @@ int virQEMUDriverConfigLoadFile(virQEMUDriverConfigPtr cfg,
goto cleanup;
GET_CONFIG_TLS_CERTINFO(chardev);
+ GET_CONFIG_TLS_CERTINFO(migrate);
+
#undef GET_CONFIG_TLS_CERTINFO
if (virConfGetValueUInt(conf, "remote_websocket_port_min", &cfg->webSocketPortMin) < 0)
diff --git a/src/qemu/qemu_conf.h b/src/qemu/qemu_conf.h
index e585f81..1407eef 100644
--- a/src/qemu/qemu_conf.h
+++ b/src/qemu/qemu_conf.h
@@ -137,6 +137,10 @@ struct _virQEMUDriverConfig {
bool chardevTLSx509verify;
char *chardevTLSx509secretUUID;
+ char *migrateTLSx509certdir;
+ bool migrateTLSx509verify;
+ char *migrateTLSx509secretUUID;
+
unsigned int remotePortMin;
unsigned int remotePortMax;
diff --git a/src/qemu/test_libvirtd_qemu.aug.in b/src/qemu/test_libvirtd_qemu.aug.in
index 6f03898..3e317bc 100644
--- a/src/qemu/test_libvirtd_qemu.aug.in
+++ b/src/qemu/test_libvirtd_qemu.aug.in
@@ -25,6 +25,9 @@ module Test_libvirtd_qemu =
{ "chardev_tls_x509_cert_dir" = "/etc/pki/libvirt-chardev" }
{ "chardev_tls_x509_verify" = "1" }
{ "chardev_tls_x509_secret_uuid" = "00000000-0000-0000-0000-000000000000" }
+{ "migrate_tls_x509_cert_dir" = "/etc/pki/libvirt-migrate" }
+{ "migrate_tls_x509_verify" = "1" }
+{ "migrate_tls_x509_secret_uuid" = "00000000-0000-0000-0000-000000000000" }
{ "nographics_allow_host_audio" = "1" }
{ "remote_display_port_min" = "5900" }
{ "remote_display_port_max" = "65535" }
--
2.9.3
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