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Author: plavin Date: 2007-05-07 22:58:15 +0200 (Mon, 07 May 2007) New Revision: 6368 Log: Make changes to DRBD FAQ Modified: trunk/refman-5.1/faqs.xml Modified: trunk/refman-5.1/faqs.xml =================================================================== --- trunk/refman-5.1/faqs.xml 2007-05-07 17:50:05 UTC (rev 6367) +++ trunk/refman-5.1/faqs.xml 2007-05-07 20:58:15 UTC (rev 6368) Changed blocks: 3, Lines Added: 741, Lines Deleted: 622; 45092 bytes @@ -6958,432 +6958,445 @@ </para> </section> - + <section id="faqs-mysql-drbd-heartbeat"> - + <title>MySQL ¤t-series; FAQ — MySQL, DRBD, and Heartbeat</title> - + <indexterm> <primary>drbd</primary> <secondary>FAQ</secondary> </indexterm> - + <indexterm> <primary>frequently-asked questions about DRBD</primary> </indexterm> - + <section id="faqs-drbd"> - - <title>Distributed Replicated Block Device</title> - - <para> - In the following section, we provide answers to questions that are - most frequently asked about Distributed Replicated Block Device (DRBD). - </para> - - <qandaset defaultlabel="qanda"> - - <qandaentry> - - <question> - - <indexterm> - <primary><literal>DRBD</literal></primary> - </indexterm> - - <para> - What is DRBD? - </para> - - </question> - - <answer> - - <para> - DRBD is an acronym for Distributed Replicated Block Device. - DRBD is an open source Linux kernel block device which leverages - synchronous replication to achieve a consistent view of data - between two systems, typically an Active and Passive system. - DRBD currently supports all the major flavors of Linux - and comes bundled in several major Linux distributions. - The DRBD project is maintained by - <ulink url=" http://www.drbd.org/">LINBIT</ulink>. - </para> - - </answer> - - </qandaentry> - - <qandaentry> - + + <title>Distributed Replicated Block Device</title> + + <para> + In the following section, we provide answers to questions that + are most frequently asked about Distributed Replicated Block + Device (DRBD). + </para> + + <qandaset defaultlabel="qanda"> + + <qandaentry> + <question> - + + <indexterm> + <primary><literal>DRBD</literal></primary> + </indexterm> + <para> + What is DRBD? + </para> + + </question> + + <answer> + + <para> + DRBD is an acronym for Distributed Replicated Block + Device. DRBD is an open source Linux kernel block device + which leverages synchronous replication to achieve a + consistent view of data between two systems, typically an + Active and Passive system. DRBD currently supports all the + major flavors of Linux and comes bundled in several major + Linux distributions. The DRBD project is maintained by + <ulink url=" http://www.drbd.org/">LINBIT</ulink>. + </para> + + </answer> + + </qandaentry> + + <qandaentry> + + <question> + + <para> What are <quote>Block Devices</quote>? </para> - + </question> - + <answer> - + <para> - Block devices are the type of device used to represent - storage in the Linux Kernel. All physical disk devices - present a <quote>block device</quote> interface. Additionally, virtual - disk systems like LVM or DRBD present a <quote>block device</quote> - interface. In this way, the file system or other software - that might want to access a disk device can be used with - any number of real or virtual devices without having to - know anything about their underlying implementation details. + Block devices are the type of device used to represent + storage in the Linux Kernel. All physical disk devices + present a <quote>block device</quote> interface. + Additionally, virtual disk systems like LVM or DRBD + present a <quote>block device</quote> interface. In this + way, the file system or other software that might want to + access a disk device can be used with any number of real + or virtual devices without having to know anything about + their underlying implementation details. </para> - + </answer> - + </qandaentry> - - <qandaentry> - - <question> - - <indexterm> - <primary><literal>DRBD licence</literal></primary> - </indexterm> - - <para> - How is DRBD licensed? - </para> - - </question> - - <answer> - - <para> - DRBD is licensed under the GPL. - </para> - - </answer> - - </qandaentry> - - <qandaentry> - - <question> - - <para> - Where can I download DRBD? - </para> - - </question> - - <answer> - - <para> - Please see <ulink url="http://www.drbd.org/download.html"/> - </para> - - </answer> - - </qandaentry> - - <qandaentry> - - <question> - - <para> - If I find a bug in DRBD, to whom do I submit the issue? - </para> - - </question> - - <answer> - - <para> - Bug reports should be submitted to the - DRBD mailing list. Please see: - <ulink url="http://lists.linbit.com/ "/>. - </para> - - </answer> - - </qandaentry> - - <qandaentry> - - <question> - - <para> - Where can I get more technical and business information - concerning MySQL and DRBD? - </para> - - </question> - - <answer> - - <para> - Please visit: <ulink url="http://mysql.com/drbd/"/> - </para> - - </answer> - - </qandaentry> - </qandaset> + + <qandaentry> + + <question> + + <indexterm> + <primary><literal>DRBD licence</literal></primary> + </indexterm> + + <para> + How is DRBD licensed? + </para> + + </question> + + <answer> + + <para> + DRBD is licensed under the GPL. + </para> + + </answer> + + </qandaentry> + + <qandaentry> + + <question> + + <para> + Where can I download DRBD? + </para> + + </question> + + <answer> + + <para> + Please see + <ulink url="http://www.drbd.org/download.html"/> + </para> + + </answer> + + </qandaentry> + + <qandaentry> + + <question> + + <para> + If I find a bug in DRBD, to whom do I submit the issue? + </para> + + </question> + + <answer> + + <para> + Bug reports should be submitted to the DRBD mailing list. + Please see: <ulink url="http://lists.linbit.com/ "/>. + </para> + + </answer> + + </qandaentry> + + <qandaentry> + + <question> + + <para> + Where can I get more technical and business information + concerning MySQL and DRBD? + </para> + + </question> + + <answer> + + <para> + Please visit: <ulink url="http://mysql.com/drbd/"/> + </para> + + </answer> + + </qandaentry> + + </qandaset> + </section> - + <section id="linux-heartbeat"> - <title>Linux Heartbeat</title> - + + <title>Linux Heartbeat</title> + <para> - In the following section, we provide answers to questions that are - most frequently asked about Linux Heartbeat. + In the following section, we provide answers to questions that + are most frequently asked about Linux Heartbeat. </para> - - <qandaset> - - <qandaentry> - - <question> - - <para> - What is Linux Heartbeat? - </para> - - </question> - - <answer> - - <para> - The Linux-HA project (<ulink url="http://www.linux-ha.org/"/>) - offers a high availability solution commonly referred - to as Linux Heartbeat. Linux Heartbeat ships as part of - several Linux distributions, as well as within several - embedded high availability systems. This solution can also - be used for other applications besides databases servers, - such as mail servers, web servers, file servers, and DNS servers. - </para> - - <para> - Linux Heartbeat implements a heartbeat-protocol. - A heartbeat-protocol means that messages are sent at - regular intervals between two or more nodes. If a message - is not received from a node within a given interval, - then it is assumed the node has failed and some - type of failover or recovery action is required. - Linux Heartbeat is typically configured to send - these heartbeat messages over standard Ethernet interfaces, - but it does also support other methods, such as serial-line links. - </para> - - </answer> - - </qandaentry> - - <qandaentry> - - <question> - - <para> - How is Linux Heartbeat licensed? - </para> - - </question> - - <answer> - - <para> - Linux Heartbeat is licensed under the GPL. - </para> - - </answer> - - </qandaentry> - - <qandaentry> - - <question> - - <para> - Where can I download Linux Heartbeat? - </para> - - </question> - - <answer> - - <para> - Please see <ulink url="http://linux-ha.org/download/index.html"/>. - </para> - - </answer> - - </qandaentry> - - <qandaentry> - - <question> - - <para> - If I find a bug with Linux Heartbeat, to whom do I submit the issue? - </para> - - </question> - - <answer> - - <para> - Bug reports should be submitted to - <ulink url="http://www.linux-ha.org/ClusterResourceManager/BugReports"/>. - </para> - - </answer> - - </qandaentry> - - </qandaset> - + + <qandaset> + + <qandaentry> + + <question> + + <para> + What is Linux Heartbeat? + </para> + + </question> + + <answer> + + <para> + The Linux-HA project + (<ulink url="http://www.linux-ha.org/"/>) offers a high + availability solution commonly referred to as Linux + Heartbeat. Linux Heartbeat ships as part of several Linux + distributions, as well as within several embedded high + availability systems. This solution can also be used for + other applications besides databases servers, such as mail + servers, web servers, file servers, and DNS servers. + </para> + + <para> + Linux Heartbeat implements a heartbeat-protocol. A + heartbeat-protocol means that messages are sent at regular + intervals between two or more nodes. If a message is not + received from a node within a given interval, then it is + assumed the node has failed and some type of failover or + recovery action is required. Linux Heartbeat is typically + configured to send these heartbeat messages over standard + Ethernet interfaces, but it does also support other + methods, such as serial-line links. + </para> + + </answer> + + </qandaentry> + + <qandaentry> + + <question> + + <para> + How is Linux Heartbeat licensed? + </para> + + </question> + + <answer> + + <para> + Linux Heartbeat is licensed under the GPL. + </para> + + </answer> + + </qandaentry> + + <qandaentry> + + <question> + + <para> + Where can I download Linux Heartbeat? + </para> + + </question> + + <answer> + + <para> + Please see + <ulink url="http://linux-ha.org/download/index.html"/>. + </para> + + </answer> + + </qandaentry> + + <qandaentry> + + <question> + + <para> + If I find a bug with Linux Heartbeat, to whom do I submit + the issue? + </para> + + </question> + + <answer> + + <para> + Bug reports should be submitted to + <ulink url="http://www.linux-ha.org/ClusterResourceManager/BugReports"/>. + </para> + + </answer> + + </qandaentry> + + </qandaset> + </section> - + <section id="drbd-architecture"> + <title>DRBD Architecture</title> - + <para> - In the following section, we provide answers to questions that are - most frequently asked about DRBD Architecture. + In the following section, we provide answers to questions that + are most frequently asked about DRBD Architecture. </para> - + <qandaset> - + <qandaentry> - + <question> - + <para> - Does DRBD support an Active/Active configuration? + Is an Active/Active option available for MySQL with DRBD? </para> - + </question> - + <answer> - + <para> - Currently, DRBD does not support Active/Active configurations - <quote>out of the box</quote>. + Currently, MySQL does not support Active/Active + configurations using DRBD <quote>out of the box</quote>. </para> - + </answer> - + </qandaentry> - + <qandaentry> - + <question> - + <para> What MySQL storage engines are supported with DRBD? </para> - + </question> - + <answer> - + <para> - All of the MySQL transactional storage engines are - supported by DRBD, including - InnoDB and Falcon. For archived or read-only data, - MyISAM or Archive can also be used. + All of the MySQL transactional storage engines are + supported by DRBD, including InnoDB and Falcon. For + archived or read-only data, MyISAM or Archive can also be + used. </para> - + </answer> - + </qandaentry> - + <qandaentry> - + <question> - + <para> How long does a failover take? </para> - + </question> - + <answer> - + <para> - Failover time is dependent on many things, some of - which are configurable. After activating the passive - host, MySQL will have to start and run a normal recovery - process. If the InnoDB log files have been configured - to a large size and there was heavy write traffic, - this may take a reasonably long period of time. - However, under normal circumstances, failover tends - to take less than a minute. + Failover time is dependent on many things, some of which + are configurable. After activating the passive host, MySQL + will have to start and run a normal recovery process. If + the InnoDB log files have been configured to a large size + and there was heavy write traffic, this may take a + reasonably long period of time. However, under normal + circumstances, failover tends to take less than a minute. </para> - + </answer> - + </qandaentry> - + <qandaentry> - + <question> - + <para> - How long does it take to resynchronize data after a failure? + How long does it take to resynchronize data after a + failure? </para> - + </question> - + <answer> - + <para> - Resynchronization time depends on how long the two - machines are out of communication and how much data - was written during that period of time. Resynchronization - time is a function of data to be synced, network speed - and disk speed. DRBD maintains a bitmap of changed blocks - on the primary machine, so only those blocks that have - changed will need to be transferred. + Resynchronization time depends on how long the two + machines are out of communication and how much data was + written during that period of time. Resynchronization time + is a function of data to be synced, network speed and disk + speed. DRBD maintains a bitmap of changed blocks on the + primary machine, so only those blocks that have changed + will need to be transferred. </para> - + </answer> - + </qandaentry> - </qandaset> - + + </qandaset> + </section> - <section id="drbd-mysql-replication"> + + <section id="drbd-mysql-replication-scale"> + <title>DRBD and MySQL Replication</title> - + <para> - In the following section, we provide answers to questions that are - most frequently asked about MySQL Replication Scale-out. + In the following section, we provide answers to questions that + are most frequently asked about MySQL Replication Scale-out. </para> - + <qandaset> - + <qandaentry> - + <question> - + <para> What is the difference between MySQL Cluster and DRBD? </para> - + </question> - + <answer> - + <para> - Both MySQL Cluster and DRBD replicate data synchronously. - MySQL Cluster leverages a shared-nothing storage architecture - in which the cluster can be architected beyond an Active/Passive - configuration. DRBD operates at a much lower level within - the <quote>stack</quote>, at the disk I/O level. For a comparison of various - high availability features between these two options, please + Both MySQL Cluster and DRBD replicate data synchronously. + MySQL Cluster leverages a shared-nothing storage + architecture in which the cluster can be architected + beyond an Active/Passive configuration. DRBD operates at a + much lower level within the <quote>stack</quote>, at the + disk I/O level. For a comparison of various high + availability features between these two options, please refer to <xref linkend="drbd-availability-comparison"/>. </para> - + <figure id="drbd-availability-comparison"> <title>Availability comparison</title> <mediaobject> @@ -7397,70 +7410,73 @@ </textobject> </mediaobject> </figure> - + </answer> - + </qandaentry> - + <qandaentry> - + <question> - + <para> What is the difference between MySQL Replication and DRBD? </para> - + </question> - + <answer> - + <para> - MySQL Replication replicates data asynchronously while DRBD - replicates data synchronously. For a comparison of various - high availability features between these two options, - please refer to the high availability comparison grid, - <xref linkend="drbd-availability-comparison"/>. + MySQL Replication replicates data asynchronously while + DRBD replicates data synchronously. For a comparison of + various high availability features between these two + options, please refer to the high availability comparison + grid, <xref linkend="drbd-availability-comparison"/>. </para> - + </answer> - + </qandaentry> + <qandaentry> - + <question> - + <para> How can I combine MySQL Replication scale-out with DRBD? </para> - + </question> - + <answer> - + <para> - MySQL Replication is typically deployed in a Master to many - Slaves configuration. In this configuration, having many - Slaves provides read scalability. DRBD is used to provide - high-availability for the Master MySQL Server in an - Active/Passive configuration. This provides for automatic failover, - safeguards against data loss, and automatically synchronizes the - failed MySQL Master after a failover. + MySQL Replication is typically deployed in a Master to + many Slaves configuration. In this configuration, having + many Slaves provides read scalability. DRBD is used to + provide high-availability for the Master MySQL Server in + an Active/Passive configuration. This provides for + automatic failover, safeguards against data loss, and + automatically synchronizes the failed MySQL Master after a + failover. </para> - + <para> - The most likely scenario in which MySQL Replication scale-out - can be leveraged with DRBD is in the form of attaching - replicated MySQL <quote>read-slaves</quote> off of the Active-Master MySQL Server, - shown in <xref linkend="active-master-mysql-server"/>. Since - DRBD replicates an entire block device, - master information such as the binary logs are also replicated. - In this way, all of the slaves can attach to the Virtual IP - Address managed by Linux Heartbeat. In the event of a failure, - the asynchronous nature of MySQL Replication allows the slaves - to continue with the new Active machine as their master with no - intervention needed. + The most likely scenario in which MySQL Replication + scale-out can be leveraged with DRBD is in the form of + attaching replicated MySQL <quote>read-slaves</quote> off + of the Active-Master MySQL Server, shown in + <xref linkend="active-master-mysql-server"/>. Since DRBD + replicates an entire block device, master information such + as the binary logs are also replicated. In this way, all + of the slaves can attach to the Virtual IP Address managed + by Linux Heartbeat. In the event of a failure, the + asynchronous nature of MySQL Replication allows the slaves + to continue with the new Active machine as their master + with no intervention needed. </para> - + <figure id="active-master-mysql-server"> <title>Active-Master MySQL server</title> <mediaobject> @@ -7474,536 +7490,639 @@ </textobject> </mediaobject> </figure> - - + </answer> - + </qandaentry> - - - </qandaset> - + + </qandaset> + </section> - + <section id="drbd-file-systems"> + <title>DRBD and File Systems</title> - + <para> - In the following section, we provide answers to questions that are - most frequently asked about DRBD and file systems. + In the following section, we provide answers to questions that + are most frequently asked about DRBD and file systems. </para> - + <qandaset> - + <qandaentry> - + <question> - + <para> Can XFS be used with DRBD? </para> - + </question> - + <answer> - + <para> - Yes. XFS uses dynamic block size, thus DRBD 0.7 or later is needed. + Yes. XFS uses dynamic block size, thus DRBD 0.7 or later + is needed. </para> - + </answer> - + </qandaentry> - - - </qandaset> - + + </qandaset> + </section> + <section id="drbd-lvm"> + <title>DRBD and LVM</title> - + <para> - In the following section, we provide answers to questions that are - most frequently asked about DRBD and LVM. + In the following section, we provide answers to questions that + are most frequently asked about DRBD and LVM. </para> - + <qandaset> - + <qandaentry> - + <question> - + <para> - Can I use DRBD with LVM? + Can I use DRBD on top of LVM? </para> - + </question> - + <answer> - + <para> - Yes. With LVM2, snapshots are writable. - So you can replay the journal on the snapshot. + Yes, DRBD supports on-line resizing. If you enlarge your + logical volume that acts as a backing device for DRBD, you + can enlarge DRBD itself too, and of course your file + system if it supports resizing. </para> - + </answer> - + </qandaentry> - - - </qandaset> - + + <qandaentry> + + <question> + + <para> + Can I use LVM on top of DRBD? + </para> + + </question> + + <answer> + + <para> + Yes, you can use DRBD as a Physical Volume (PV) for LVM. + Depending on the default LVM configuration shipped with + your distribution, you may need to add the + <filename>/dev/drbd*</filename> device files to the + <literal>filter</literal> option in your + <filename>lvm.conf</filename> so LVM scans your DRBDs for + PV signatures. + </para> + + </answer> + + </qandaentry> + + <qandaentry> + + <question> + + <para> + Can I use DRBD on top of LVM while at the same time + running LVM on top of that DRBD? + </para> + + </question> + + <answer> + + <para> + This requires careful tuning of your LVM configuration to + avoid duplicate PV scans, but yes, it is possible. + </para> + + </answer> + + </qandaentry> + + </qandaset> + </section> + <section id="drbd-virtualization"> + <title>DRBD and Virtualization</title> - + <para> - In the following section, we provide answers to questions that are - most frequently asked about DRBD and virtualization. + In the following section, we provide answers to questions that + are most frequently asked about DRBD and virtualization. </para> - + <qandaset> - + <qandaentry> - + <question> - + <para> Can I use DRBD with OpenVZ? </para> - + </question> - + <answer> - + <para> - See <ulink url="http://wiki.openvz.org/HA_cluster_with_DRBD_and_Heartbeat"/>. + See + <ulink url="http://wiki.openvz.org/HA_cluster_with_DRBD_and_Heartbeat"/>. </para> - + </answer> - + </qandaentry> - - - </qandaset> - + + <qandaentry> + + <question> + + <para> + Can I use DRBD with Xen and/or KVM? + </para> + + </question> + + <answer> + + <para> + Yes. If you are looking for professional consultancy or + expert commercial support for Xen- or KVM-based + virtualization clusters with DRBD, contact LINBIT + (<ulink url="http://www.linbit.com"/>). + </para> + + </answer> + + </qandaentry> + + </qandaset> + </section> + <section id="drbd-security"> + <title>DRBD and Security</title> - + <para> - In the following section, we provide answers to questions that are - most frequently asked about DRBD and security. + In the following section, we provide answers to questions that + are most frequently asked about DRBD and security. </para> - + <qandaset> - + <qandaentry> - + <question> - + <para> Can I encrypt/compress the exchanged data? </para> - + </question> - + <answer> - + <para> - Yes. But there is no option within DRBD to allow - for this. You’ll need to leverage a VPN and the network - layer should do the rest. - + Yes. But there is no option within DRBD to allow for this. + You’ll need to leverage a VPN and the network layer + should do the rest. </para> - + </answer> - + </qandaentry> - - - </qandaset> - + + <qandaentry> + + <question> + + <para> + Does DRBD do mutual node authentication? + </para> + + </question> + + <answer> + + <para> + Yes, starting with DRBD 8 shared-secret mutual node + authentication is supported. + </para> + + </answer> + + </qandaentry> + + </qandaset> + </section> - <section id="drbd-system-reauirements"> + + <section id="drbd-system-requirements"> + <title>DRBD and System Requirements</title> - + <para> - In the following section, we provide answers to questions that are - most frequently asked about RBD and System Requirements. + In the following section, we provide answers to questions that + are most frequently asked about RBD and System Requirements. </para> - + <qandaset> - + <qandaentry> - + <question> - + <para> What other packages besides DRBD are required? </para> - + </question> - + <answer> - + <para> - When compiling DRBD from source additional - prerequisite packages may be required. They include - but are not limited to: - + When using pre-built binary packages, none except a + matching kernel, plus packages for + <literal>glibc</literal> and your favorite shell. When + compiling DRBD from source additional prerequisite + packages may be required. They include but are not limited + to: + <itemizedlist> - + <listitem> <para> glib-devel - </para> </listitem> - + <listitem> <para> openssl - </para> </listitem> + <listitem> <para> devel - </para> </listitem> - + <listitem> <para> libgcrypt-devel - </para> </listitem> + <listitem> <para> glib2-devel - </para> </listitem> - + <listitem> <para> pkgconfig - </para> </listitem> + <listitem> <para> ncurses-devel - </para> </listitem> - + <listitem> <para> rpm-build - </para> </listitem> + <listitem> <para> rpm-devel - </para> </listitem> - + <listitem> <para> redhat-rpm-config - </para> </listitem> + <listitem> <para> gcc - </para> </listitem> - + <listitem> <para> gcc-c++ - </para> </listitem> + <listitem> <para> bison - </para> </listitem> - + <listitem> <para> flex - </para> + </para> </listitem> - + <listitem> <para> gnutls-devel </para> </listitem> - + <listitem> <para> lm_sensors-devel - </para> </listitem> + <listitem> <para> net-snmp-devel - </para> </listitem> - + <listitem> <para> python-devel - </para> + </para> </listitem> + <listitem> <para> bzip2-devel - </para> </listitem> - + <listitem> <para> libselinux-devel - </para> </listitem> + <listitem> <para> perl-DBI - </para> </listitem> - + <listitem> <para> libnet </para> </listitem> - </itemizedlist> - - Pre-built x86 and x86_64 packages for specific - kernel versions are available with a support subscription - from LINBIT. Please note that if the kernel is upgraded, - DRBD must be as well. + + </itemizedlist> + + Pre-built x86 and x86_64 packages for specific kernel + versions are available with a support subscription from + LINBIT. Please note that if the kernel is upgraded, DRBD + must be as well. </para> - + </answer> - + </qandaentry> - + <qandaentry> - + <question> - + <para> How many machines are required to set up DRBD? </para> - + </question> - + <answer> - + <para> - Two machines are required to achieve the minimum - degree of high availability. Although at any one given - point in time one will be primary and one will be secondary, - it is better to consider the machines as part of a mirrored - pair without a <quote>natural</quote> primary machine. + Two machines are required to achieve the minimum degree of + high availability. Although at any one given point in time + one will be primary and one will be secondary, it is + better to consider the machines as part of a mirrored pair + without a <quote>natural</quote> primary machine. </para> - + </answer> - + </qandaentry> - + <qandaentry> - + <question> - + <para> Does DRBD only run on Linux? </para> - + </question> - + <answer> - + <para> - DRBD is a Linux Kernel Module, and can work with - many popular Linux distributions. - DRBD is currently not available for non-Linux operating systems. + DRBD is a Linux Kernel Module, and can work with many + popular Linux distributions. DRBD is currently not + available for non-Linux operating systems. </para> - + </answer> - + </qandaentry> - - - </qandaset> - + + </qandaset> + </section> + <section id="mysql-consulting-support-services"> + <title>MySQL Consulting and Support Services</title> - + <para> - In the following section, we provide answers to questions that are - most frequently asked about DRBD and MySQL Support Services. + In the following section, we provide answers to questions that + are most frequently asked about DRBD and MySQL Support Services. </para> - + <qandaset> - - + <qandaentry> - + <question> - + <para> - Does MySQL offer professional consulting to help - with designing a DRBD system? + Does MySQL offer professional consulting to help with + designing a DRBD system? </para> - + </question> - + <answer> - + <para> - Yes. MySQL offers consulting for the design, installation, - configuration, and monitoring of high availability DRBD. - For more information concerning a High Availability Jumpstart, - please see: <ulink url="http://www.mysql.com/consulting/packaged/scaleout.html"/>. + Yes. MySQL offers consulting for the design, installation, + configuration, and monitoring of high availability DRBD. + For more information concerning a High Availability + Jumpstart, please see: + <ulink url="http://www.mysql.com/consulting/packaged/scaleout.html"/>. </para> - + </answer> - + </qandaentry> - + <qandaentry> - + <question> - + <para> - Does MySQL offer support for DRBD and Linux Heartbeat from MySQL? + Does MySQL offer support for DRBD and Linux Heartbeat from + MySQL? </para> - + </question> - + <answer> - + <para> - Yes. Support for DRBD is available with an add-on subscription - to MySQL Enterprise called “DRBD for MySQL”. For more - information about support options for DRBD see: + Yes. Support for DRBD is available with an add-on + subscription to MySQL Enterprise called “DRBD for + MySQL”. For more information about support options for + DRBD see: <ulink url="http://mysql.com/products/enterprise/features.html"/>. </para> - + <para> For the list of supported Linux distributions, please see: <ulink url="http://www.mysql.com/support/supportedplatforms/enterprise.html"/>. </para> - - <para> - <emphasis role="bold">NOTE:</emphasis> DRBD is only available on Linux. - DRBD is not available on Windows, MacOS, Solaris, HPUX, AIX, FreeBSD, - or other non-Linux platforms. + + <para> + <emphasis role="bold">NOTE:</emphasis> DRBD is only + available on Linux. DRBD is not available on Windows, + MacOS, Solaris, HPUX, AIX, FreeBSD, or other non-Linux + platforms. </para> - + </answer> - + </qandaentry> - + <qandaentry> - + <question> - + <para> Are pre-built binaries or RPMs available? </para> - + </question> - + <answer> - + <para> - Yes. <quote>DRBD for MySQL</quote> is an add-on subscription to - MySQL Enterprise, which provides pre-built binaries for DRBD. - For more information see: + Yes. <quote>DRBD for MySQL</quote> is an add-on + subscription to MySQL Enterprise, which provides pre-built + binaries for DRBD. For more information see: <ulink url="http://mysql.com/products/enterprise/features.html"/>. </para> - + </answer> - + </qandaentry> - - </qandaset> - + + </qandaset> + </section> + <section id="drbd-resources"> + <title>DRBD and Resources</title> - + <para> - In the following section, we provide answers to questions that are - most frequently asked about DRBD and resources. + In the following section, we provide answers to questions that + are most frequently asked about DRBD and resources. </para> - + <qandaset> - + <qandaentry> - + <question> - + <para> - Does MySQL have documentation to help me with the - installation and configuration of DRBD and Linux Heartbeat? + Does MySQL have documentation to help me with the + installation and configuration of DRBD and Linux + Heartbeat? </para> - + </question> - + <answer> - + <para> Coming soon. </para> - + </answer> - + </qandaentry> - + <qandaentry> - + <question> - + <para> - Is there a dedicated discussion forum for MySQL High-Availability? + Is there a dedicated discussion forum for MySQL + High-Availability? </para> - + </question> - + <answer> - + <para> Yes, <ulink url="http://forums.mysql.com/list.php?144"/>. </para> - + </answer> - + </qandaentry> - - </qandaset> - + + </qandaset> + </section> - </section> + + </section> + </appendix>
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| • svn commit - mysqldoc@docsrva: r6368 - trunk/refman-5.1 | plavin | 7 May |
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