PXC-4410 Fix the broken links in PXC docs (#145)

modified: README.md modified: docs/apparmor.md modified: docs/configure-cluster-ubuntu.md modified: docs/failover.md modified: docs/monitoring.md modified: docs/release-notes/8.0.29-21.md modified: docs/release-notes/8.0.30-22.md modified: docs/release-notes/8.0.31-23.2.md modified: docs/release-notes/8.0.31-23.md modified: docs/release-notes/8.0.32-24.2.md modified: docs/release-notes/8.0.32-24.md modified: docs/release-notes/8.0.33-25.md modified: docs/release-notes/8.0.33-25.upd.md modified: docs/release-notes/Percona-XtraDB-Cluster-8.0.18-9.3.md modified: docs/release-notes/Percona-XtraDB-Cluster-8.0.19-10.md modified: docs/release-notes/Percona-XtraDB-Cluster-8.0.20-11.2.md modified: docs/release-notes/Percona-XtraDB-Cluster-8.0.20-11.3.md modified: docs/release-notes/Percona-XtraDB-Cluster-8.0.20-11.md modified: docs/release-notes/Percona-XtraDB-Cluster-8.0.21-12.1.md modified: docs/release-notes/Percona-XtraDB-Cluster-8.0.22-13.1.md modified: docs/release-notes/Percona-XtraDB-Cluster-8.0.23-14.1.md modified: docs/release-notes/Percona-XtraDB-Cluster-8.0.25-15.1.md modified: docs/release-notes/Percona-XtraDB-Cluster-8.0.26-16.1.md modified: docs/release-notes/Percona-XtraDB-Cluster-8.0.27-18.1.md modified: docs/release-notes/Percona-XtraDB-Cluster-8.0.28-19.1.md modified: docs/selinux.md modified: docs/state-snapshot-transfer.md
percona · Apr 9, 2024 · b9db3c7 · b9db3c7
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diff --git a/README.md b/README.md
@@ -11,11 +11,11 @@ You can install Percona XtraDB Cluster using the following methods:
 - from the Percona repository 
 - Build from the [source code](https://github.com/percona/percona-xtradb-cluster)
 
-You can find the installation instructions in the [official documentation](https://docs.percona.com/percona-xtradb-cluster/latest/install/index.html).
+You can find the installation instructions in the [official documentation](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html).
 
 ## Release Notes
 
-The Release Notes are located [here](https://docs.percona.com/percona-xtradb-cluster/latest/release-notes/release-notes_index.html)
+The Release Notes are located [here](https://docs.percona.com/percona-xtradb-cluster/8.0/release-notes/release-notes_index.html)
 
 The Release Announcements are available [here](https://forums.percona.com/c/percona-news/software-new-releases/)
 

diff --git a/docs/apparmor.md b/docs/apparmor.md
@@ -18,7 +18,7 @@ The `mysqld` profile and the `SST` script profile can be adjusted, such as movin
 
 By default, the `pxc_encrypt_cluster_traffic` is `ON`, which means that all cluster traffic is protected with certificates. However, these certificates cannot be located in the data directory since that location is overwritten during the SST process.
 
-[Set up the certificates](https://www.percona.com/doc/percona-xtradb-cluster/LATEST/security/encrypt-traffic.html#encrypt-replication) describes the certificate setup.
+[Set up the certificates](https://www.percona.com/doc/percona-xtradb-cluster/8.0/encrypt-traffic.html#encrypt-replication) describes the certificate setup.
 
 The following AppArmor profile rule grants access to certificates located in /etc/mysql/certs. You must be root or have `sudo` privileges.
 

diff --git a/docs/configure-cluster-ubuntu.md b/docs/configure-cluster-ubuntu.md
@@ -30,7 +30,7 @@ The procedure described in this tutorial requires he following:
 * Firewall on all nodes is configured to allow connecting
 to ports 3306, 4444, 4567 and 4568.
 
-* AppArmor profile for MySQL is [disabled](https://www.mysqlperformanceblog.com/2012/12/20/percona-xtradb-cluster-selinux-is-not-always-the-culprit/).
+* AppArmor profile for MySQL is [disabled](https://www.percona.com/blog/percona-xtradb-cluster-selinux-is-not-always-the-culprit/).
 
 ## Step 1. Install PXC
 

diff --git a/docs/failover.md b/docs/failover.md
@@ -110,4 +110,4 @@ but disaster-recovery failover remains in your control.
 
 ## Other reading
 
-* [PXC - Failure Scenarios with only 2 nodes](https://www.mysqlperformanceblog.com/2012/07/25/percona-xtradb-cluster-failure-scenarios-with-only-2-nodes/)
+* [PXC - Failure Scenarios with only 2 nodes](https://www.percona.com/blog/percona-xtradb-cluster-failure-scenarios-with-only-2-nodes/)
diff --git a/docs/monitoring.md b/docs/monitoring.md
@@ -69,7 +69,7 @@ at least for the following:
 
 ## Use Percona Monitoring and Management
 
-[Percona Monitoring and Management](https://www.percona.com/doc/percona-monitoring-and-management/index.html) includes two dashboards to monitor PXC:
+[Percona Monitoring and Management](https://docs.percona.com/percona-monitoring-and-management/index.html) includes two dashboards to monitor PXC:
 
 1. PXC/Galera Cluster Overview:
 
@@ -83,9 +83,9 @@ at least for the following:
 
     ![image](_static/pmm.menu.ha.png)
 
-Please refer to the [official documentation](https://www.percona.com/doc/percona-monitoring-and-management/index.html) for details on Percona Monitoring and Management installation and setup.
+Please refer to the [official documentation](https://docs.percona.com/percona-monitoring-and-management/index.html) for details on Percona Monitoring and Management installation and setup.
 
 ## Other reading
 
-* [Realtime stats to pay attention to in PXC and Galera](https://www.mysqlperformanceblog.com/2012/11/26/realtime-stats-to-pay-attention-to-in-percona-xtradb-cluster-and-galera/)
+* [Realtime stats to pay attention to in PXC and Galera](https://www.percona.com/blog/realtime-stats-to-pay-attention-to-in-percona-xtradb-cluster-and-galera/)
 
diff --git a/docs/release-notes/8.0.29-21.md b/docs/release-notes/8.0.29-21.md
@@ -38,7 +38,7 @@ Debian 9 is no longer supported.
 
 ## Useful Links
 
-* The [Percona XtraDB Cluster installation instructions](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+* The [Percona XtraDB Cluster installation instructions](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 * The [Percona XtraDB Cluster downloads](https://www.percona.com/downloads/Percona-XtraDB-Cluster-LATEST/#)
 

diff --git a/docs/release-notes/8.0.30-22.md b/docs/release-notes/8.0.30-22.md
@@ -19,7 +19,7 @@
 
 | Release date | December 28, 2022 |
 |---|---|
-| Install instructions | [Install Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html) |
+| Install instructions | [Install Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html) |
 | Download this version | [Percona XtraDB Cluster](https://www.percona.com/downloads/Percona-XtraDB-Cluster-LATEST/#)
 
 Percona XtraDB Cluster (PXC) supports critical business applications in your public, private, or hybrid cloud environment. Our free, open source, enterprise-grade solution includes the high availability and security features your business requires to meet your customer expectations and business goals.

diff --git a/docs/release-notes/8.0.31-23.2.md b/docs/release-notes/8.0.31-23.2.md
@@ -13,7 +13,7 @@
 
 | Release date | April 04, 2023 |
 |---|---|
-| Install instructions | [Install Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html) |
+| Install instructions | [Install Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html) |
 
 Percona XtraDB Cluster (PXC) supports critical business applications in your public, private, or hybrid cloud environment. Our free, open source, enterprise-grade solution includes the high availability and security features your business requires to meet your customer expectations and business goals.
 

diff --git a/docs/release-notes/8.0.31-23.md b/docs/release-notes/8.0.31-23.md
@@ -13,7 +13,7 @@
 
 | Release date | {{ release_date }} |
 |---|---|
-| Install instructions | [Install Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html) |
+| Install instructions | [Install Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html) |
 
 Percona XtraDB Cluster (PXC) supports critical business applications in your public, private, or hybrid cloud environment. Our free, open source, enterprise-grade solution includes the high availability and security features your business requires to meet your customer expectations and business goals.
 

diff --git a/docs/release-notes/8.0.32-24.2.md b/docs/release-notes/8.0.32-24.2.md
@@ -13,7 +13,7 @@
 
 | Release date | May 24, 2023 |
 |---|---|
-| Install instructions | [Install Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html) |
+| Install instructions | [Install Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html) |
 
 Percona XtraDB Cluster (PXC) supports critical business applications in your public, private, or hybrid cloud environment. Our free, open source, enterprise-grade solution includes the high availability and security features your business requires to meet your customer expectations and business goals.
 

diff --git a/docs/release-notes/8.0.32-24.md b/docs/release-notes/8.0.32-24.md
@@ -13,7 +13,7 @@
 
 | Release date | April 18, 2023 |
 |---|---|
-| Install instructions | [Install Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html) |
+| Install instructions | [Install Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html) |
 
 Percona XtraDB Cluster (PXC) supports critical business applications in your public, private, or hybrid cloud environment. Our free, open source, enterprise-grade solution includes the high availability and security features your business requires to meet your customer expectations and business goals.
 

diff --git a/docs/release-notes/8.0.33-25.md b/docs/release-notes/8.0.33-25.md
@@ -55,7 +55,7 @@ Find the full list of bug fixes and changes in the [MySQL 8.0.33 Release Notes](
 
 ## Useful links
 
-[Install Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+[Install Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 The [Percona XtraDB Cluster GitHub location](https://github.com/percona/percona-xtradb-cluster)
 

diff --git a/docs/release-notes/8.0.33-25.upd.md b/docs/release-notes/8.0.33-25.upd.md
@@ -16,7 +16,7 @@ If you already upgraded to `garbd-8.0.33`, we recommended downgrading to `garbd-
 
 ## Useful links
 
-[Install Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+[Install Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 The [Percona XtraDB Cluster GitHub location](https://github.com/percona/percona-xtradb-cluster)
 

diff --git a/docs/release-notes/Percona-XtraDB-Cluster-8.0.18-9.3.md b/docs/release-notes/Percona-XtraDB-Cluster-8.0.18-9.3.md
@@ -9,7 +9,7 @@
 
 * **Installation**
 
-    [Installing Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+    [Installing Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 
 Percona XtraDB Cluster 8.0.18-9.3 includes all of the features and bug fixes available in Percona Server for MySQL. See the corresponding [release notes for Percona Server for MySQL 8.0.18-9](https://www.percona.com/doc/percona-server/LATEST/release-notes/Percona-Server-8.0.18-9.html) for more details on these changes.

diff --git a/docs/release-notes/Percona-XtraDB-Cluster-8.0.19-10.md b/docs/release-notes/Percona-XtraDB-Cluster-8.0.19-10.md
@@ -9,7 +9,7 @@
 
 * **Installation**
 
-    [Installing Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+    [Installing Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 
 Percona XtraDB Cluster 8.0.19-10 includes all of the features and bug fixes available in Percona Server for MySQL. See the corresponding [release notes for Percona Server for MySQL 8.0.19-10](https://www.percona.com/doc/percona-server/LATEST/release-notes/Percona-Server-8.0.19-10.html) for more details on these changes.

diff --git a/docs/release-notes/Percona-XtraDB-Cluster-8.0.20-11.2.md b/docs/release-notes/Percona-XtraDB-Cluster-8.0.20-11.2.md
@@ -9,7 +9,7 @@
 
 * **Installation**
 
-    [Installing Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+    [Installing Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 
 This release fixes the security vulnerability [CVE-2020-15180](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15180)
diff --git a/docs/release-notes/Percona-XtraDB-Cluster-8.0.20-11.3.md b/docs/release-notes/Percona-XtraDB-Cluster-8.0.20-11.3.md
@@ -9,7 +9,7 @@
 
 * **Installation**
 
-    [Installing Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+    [Installing Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 
 ## Bugs Fixed

diff --git a/docs/release-notes/Percona-XtraDB-Cluster-8.0.20-11.md b/docs/release-notes/Percona-XtraDB-Cluster-8.0.20-11.md
@@ -9,7 +9,7 @@
 
 * **Installation**
 
-    [Installing Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+    [Installing Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 
 Percona XtraDB Cluster 8.0.20-11 includes all of the features and bug fixes available in Percona Server for MySQL. See the corresponding [release notes for Percona Server for MySQL 8.0.20-11](https://www.percona.com/doc/percona-server/LATEST/release-notes/Percona-Server-8.0.20-11.html) for more details on these changes.

diff --git a/docs/release-notes/Percona-XtraDB-Cluster-8.0.21-12.1.md b/docs/release-notes/Percona-XtraDB-Cluster-8.0.21-12.1.md
@@ -9,7 +9,7 @@
 
 * **Installation**
 
-    [Installing Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+    [Installing Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 
 Percona XtraDB Cluster 8.0.21-12.1 includes all of the features and bug fixes available in Percona Server for MySQL. See the corresponding [release notes for Percona Server for MySQL 8.0.21-12](https://www.percona.com/doc/percona-server/LATEST/release-notes/Percona-Server-8.0.21-12.html) for more details on these changes.

diff --git a/docs/release-notes/Percona-XtraDB-Cluster-8.0.22-13.1.md b/docs/release-notes/Percona-XtraDB-Cluster-8.0.22-13.1.md
@@ -9,7 +9,7 @@
 
 * **Installation**
 
-    [Installing Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+    [Installing Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 
 Percona XtraDB Cluster 8.0.22-13.1 includes all of the features and bug fixes available in Percona Server for MySQL. See the corresponding [release notes for Percona Server for MySQL 8.0.22-13](https://www.percona.com/doc/percona-server/LATEST/release-notes/Percona-Server-8.0.22-13.html) for more details on these changes.

diff --git a/docs/release-notes/Percona-XtraDB-Cluster-8.0.23-14.1.md b/docs/release-notes/Percona-XtraDB-Cluster-8.0.23-14.1.md
@@ -9,7 +9,7 @@
 
 * **Installation**
 
-    [Installing Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html).
+    [Installing Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html).
 
 
 Percona XtraDB Cluster 8.0.23-14.1 includes all of the features and bug fixes available in Percona Server for MySQL. See the corresponding [release notes for Percona Server for MySQL 8.0.23-14](https://www.percona.com/doc/percona-server/LATEST/release-notes/Percona-Server-8.0.23-14.html) for more details on these changes.

diff --git a/docs/release-notes/Percona-XtraDB-Cluster-8.0.25-15.1.md b/docs/release-notes/Percona-XtraDB-Cluster-8.0.25-15.1.md
@@ -9,7 +9,7 @@
 
 * **Installation**
 
-    [Installing Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html).
+    [Installing Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html).
 
 
 Percona XtraDB Cluster 8.0.25-15.1 includes all of the features and bug fixes available in Percona Server for MySQL. See the corresponding [release notes for Percona Server for MySQL 8.0.25-15](https://www.percona.com/doc/percona-server/LATEST/release-notes/Percona-Server-8.0.25-15.html) for more details on these changes.

diff --git a/docs/release-notes/Percona-XtraDB-Cluster-8.0.26-16.1.md b/docs/release-notes/Percona-XtraDB-Cluster-8.0.26-16.1.md
@@ -9,7 +9,7 @@
 
 * **Installation**
 
-    [Installing Percona XtraDB Cluster](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+    [Installing Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 
 Percona XtraDB Cluster (PXC) supports critical business applications in your public, private, or hybrid cloud environment. Our free, open source, enterprise-grade solution includes the high availability and security features your business requires to meet your customer expectations and business goals.

diff --git a/docs/release-notes/Percona-XtraDB-Cluster-8.0.27-18.1.md b/docs/release-notes/Percona-XtraDB-Cluster-8.0.27-18.1.md
@@ -33,7 +33,7 @@ Find the full list of bug fixes and changes in the [MySQL 8.0.27 Release Notes](
 ## Useful Links
 
 
-* The [Percona XtraDB Cluster installation instructions](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+* The [Percona XtraDB Cluster installation instructions](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 
 * The [Percona XtraDB Cluster downloads](https://www.percona.com/downloads/Percona-XtraDB-Cluster-LATEST/#)

diff --git a/docs/release-notes/Percona-XtraDB-Cluster-8.0.28-19.1.md b/docs/release-notes/Percona-XtraDB-Cluster-8.0.28-19.1.md
@@ -49,7 +49,7 @@ Find the full list of bug fixes and changes in the [MySQL 8.0.28 Release Notes](
 ## Useful Links
 
 
-* The [Percona XtraDB Cluster installation instructions](https://www.percona.com/doc/percona-xtradb-cluster/8.0/install/index.html)
+* The [Percona XtraDB Cluster installation instructions](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)
 
 
 * The [Percona XtraDB Cluster downloads](https://www.percona.com/downloads/Percona-XtraDB-Cluster-LATEST/#)

diff --git a/docs/selinux.md b/docs/selinux.md
@@ -8,7 +8,7 @@ SELinux helps protects the user’s home directory data. SELinux provides the fo
 
 * Used as a role-based access control system
 
-For more information, see [Percona Server and SELinux](https://www.percona.com/doc/percona-server/LATEST/security/selinux.html)
+For more information, see [Percona Server and SELinux](https://docs.percona.com/percona-server/8.0/selinux.html)
 
 Red Hat and CentOS distributes a policy module to extend the SELinux policy module for mysqld. We provide the following:
 
@@ -18,7 +18,7 @@ Red Hat and CentOS distributes a policy module to extend the SELinux policy modu
 
 ## Modify policies
 
-Modifications described in [Percona Server and SELinux](https://www.percona.com/doc/percona-server/LATEST/security/selinux.html) can also be applied for *Percona XtraDB Cluster*.
+Modifications described in [Percona Server and SELinux](https://docs.percona.com/percona-server/8.0/selinux.html) can also be applied for *Percona XtraDB Cluster*.
 
 To adjust PXC-specific configurations, especially SST/IST ports, use the following procedures as `root`:
 
@@ -92,7 +92,7 @@ If you must use a port that is already tagged, you can use either of the followi
 
 By default, the `pxc_encrypt_cluster_traffic` is `ON`, which means that all cluster traffic is protected with certificates. However, these certificates cannot be located in the data directory since that location is overwritten during the SST process.
 
-Review [How to set up the certificates](https://www.percona.com/doc/percona-xtradb-cluster/LATEST/security/encrypt-traffic.html#encrypt-replication). When SELinux is enabled, mysqld must have access to these certificates. The following items must be checked or considered:
+Review [How to set up the certificates](https://docs.percona.com/percona-xtradb-cluster/8.0/encrypt-traffic.html#encrypt-replication). When SELinux is enabled, mysqld must have access to these certificates. The following items must be checked or considered:
 
 * Certificates inside `/etc/mysql/certs/` directory must use the `mysqld_etc_t` tag. This tag is applied automatically when the files are copied into the directory. When they are moved, the files retain their original context.
 

diff --git a/docs/state-snapshot-transfer.md b/docs/state-snapshot-transfer.md
@@ -9,7 +9,7 @@ that is already part of the cluster.
 
 Percona XtraDB Cluster enables  via **xtrabackup**.
 
-Xtrabackup SST uses [backup locks](https://www.percona.com/doc/percona-server/8.0/management/backup_locks.html), which means the Galera provider is not paused at all as with  earlier.
+Xtrabackup SST uses [backup locks](https://docs.percona.com/percona-server/8.0/backup-locks.html), which means the Galera provider is not paused at all as with  earlier.
 The SST method can be configured using the [`wsrep_sst_method`](wsrep-system-index.md#wsrep_sst_method) variable.
 
 !!! note 
@@ -34,7 +34,7 @@ the cluster chooses the node with the highest `seqno` to serve as the donor.
 ## Use Percona Xtrabackup
 
 The default SST method is `xtrabackup-v2` which uses *Percona XtraBackup*.
-This is the least blocking method that leverages [backup locks](https://www.percona.com/doc/percona-server/8.0/management/backlocks.html).
+This is the least blocking method that leverages [backup locks](https://docs.percona.com/percona-xtrabackup/8.0/xtrabackup-option-reference.html#backup-locks).
 XtraBackup is run locally on the donor node.
 
 The [datadir](glossary.md#datadir) needs to be specified in the server configuration file `my.cnf`, otherwise the transfer process will fail.
Original file line number	Diff line number	Diff line change
Expand Up		@@ -110,4 +110,4 @@ but disaster-recovery failover remains in your control.

		## Other reading

		* [PXC - Failure Scenarios with only 2 nodes](https://www.mysqlperformanceblog.com/2012/07/25/percona-xtradb-cluster-failure-scenarios-with-only-2-nodes/)
		* [PXC - Failure Scenarios with only 2 nodes](https://www.percona.com/blog/percona-xtradb-cluster-failure-scenarios-with-only-2-nodes/)