book-storage-admin_color_en.pdf

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SuSE基于Ceph平台的存储产品管理员手册,最新英文完整版
ForSusetrademarksseehttp://www.suse.com/company/legal/7.Allotherthird-partytrademarksaretheprop erty of their respective owners. Trademark symbols(B, TM etc. )denote trademarks of SUSE and its affiliates Asterisks(*) denote third-party trademarks All information found in this book has been compiled with utmost attention to detail. However this does not guarantee complete accuracy. Neither SUSE LLC, its affiliates, the authors nor the translators shall be held liable for possible errors or the consequences thereof. Contents About this guide xvii CLUSTER MANAGEMENT 1 1 Salt Cluster Administration 2 1.1 Adding New Cluster Nodes 2 1.2 Adding New roles to Nodes 4 1.3 Removing and Reinstalling Cluster Nodes 5 1.4 Redeploying monitor nodes 7 1.5 Adding an OSD Disk to a Node 9 1.6 Removing an OSD 9 Removing multiple osds g. Removing all osds on a Host 10. Removing Broken OSDs Forcefully 10 1.7 Replacing an oSd disk 11 1.8 Recovering a reinstalled osd node 12 1.9 Moving the Admin Node to a New Server 13 1.10 Automated installation via salt 14 1.11 Updating the Cluster Nodes 15 Software Repositories 15. Repository Staging 15. zypper patch or zypper dup 16. Cluster Node reboots 16. Downtime of Ceph Services 16. Running the Update 16 1.12 Halting or Rebooting Cluster 17 1.13 Adjusting ceph. conf with Custom Settings 18 Overriding the defaults 19 Including Configuration Files 2 1.14 Enabling AppArmor Profiles 21 Administration guide 1.15 Deactivating tuned Profiles 22 1.16 Removing an Entire Ceph Cluster 22 OPERATING A CLUSTER 24 2 Introduction 25 3 Operating Ceph Services 26 3. 1 Operating Ceph Cluster related services using systemd 26 Starting, Stopping, and Restarting Services using Targets 26. Starting Stopping, and restarting Individual service Identifying Individual Services 27 Service status 28 3.2 Restarting Ceph Services using DeepSea 28 Restarting All Services 28. Restarting Specific Services 29 3.3 Graceful Shutdown of the Whole Ceph Cluster 30 4 Determining Cluster State 31 4.1 Checking a Cluster's Status 31 4.2 Checking Cluster Health 32 4.3 Watching a Cluster 41 4.4 Checking a Cluster's Usage Stats 42 4.5 Checking OSD Status 44 4.6 Checking for Full oSDs 45 4.7 Checking monitor status 46 4.8 Checking Placement Group States 47 4.9 Using the Admin Socket 47 4. 10 Storage Capacity 47 Administration guide 4.11 Monitoring oSDs and placement groups 50 Monitoring OSDs 50. Placement Group Sets 51 Peering 53. Monitoring Placement Group States 53.Identifying Troubled Placement Groups 58. Finding an Object Location 59 4.12 OSd is Not running 59 An OSD Will Not Start 60. An OSD Failed 60. No Free Disk Space 61 4.13 Monitoring and alerting 62 Alertmanager 62 5 Authentication with ceph 78 5. 1 Authentication architecture 78 5.2 Key management 80 Background Information 81. Managing Users 84. Keyring Management 88. Command Line Usage 91 6 Stored Data Management 92 6.1 Devices 93 Device classes 93 6.2 Buckets 100 6.3 Rule sets 103 Iterating Through the Node tree 105 firstn and indep 107 6.4 Placement Groups 108 How Are Placement Groups Used 108. Determining the Value of PG NUM 110. Setting the Number of Placement Groups 111. Getting the Number of placement Groups 112. Getting a Cluster's PG Statistics 112. Getting Statistics for Stuck PGs 112. Getting a Placement Group Map 112. Getting a Placement Group Statistics 113. Scrubbing a Placement Group 113. Prioritize Back-fill and Recovery of Placement Groups 113. Reverting Lost Objects 114 Administration guide 6.5 CRUSH Map Manipulation 114 Editing a CRUSH Map 114. Add/Move an OSD 115. Difference between ceph osd reweight and ceph osd crush reweight 116. Remove an osd117· Add a bucket117· Move a bucket117· Remove a Bucket 118 6.6 Scrubbing 118 7 Ceph Manager Modules 121 7.1 Balancer 121 The 'crush-compat Mode 122. Planning and Executing of Data Balancing 122 8 Managing storage Pools 125 8.1 Associate Pools with an application 125 8.2 Operating Pools 126 List pools126· Create a pool126· Set Pool Quotas127· Delete aPoo|128· Rename a poo|129· Show pool statistics129·Get Pool Values 129 Set Pool values 130. Set the Number of object Replicas 133 8. 3 Pool Migration 134 Migrate using Cache Tier 135. Migrating a RADos Block Device Image 137 8.4 Pool Snapshots 138 Make a snapshot of a pool 138. List snapshots of a pool 139 remove a Snapshot of a pool 139 8.5 Data Compression 139 Enable Compression 139. Pool Compression Options 140. Global Compression Options 141 9 RADOS Block Device 143 9.1 Block Device commands 143 Creating a Block Device Image in a Replicated Pool 143. Creating a Block Device Image in an Erasure Coded Pool 144. Listing Block Device Administration guide Images 144 Retrieving Image Information 145 resizing a block device Image 145. Removing a Block Device Image 145 9.2 Mounting and unmounting 145 rbdmap: Map RBD Devices at Boot Time 148.Increasing the Size of rBD Device 149 9.3 Snapshots 149 Cephx Notes 150. Snapshot Basics 150. Layering 152 9. 4 Mirroring 156 rbd-mirror Daemon 157. Pool Configuration 157. Image Configuration 159. Mirror status 162 9.5 Cache Settings 162 9.6 QoS Settings 164 9.7 Read-ahead Settings 165 9. 8 Advanced features 165 9.9 Mapping rBd using old Kernel Clients 167 10 Erasure Coded pools 169 10.1 Prerequisite for Erasure Coded Pools 169 10.2 Creating a sample erasure coded pool 169 10.3 Erasure Code Profiles 170 Creating a New Erasure Code profile 173. Removing an Erasure Code Profile 173. Displaying an Erasure Coded Profile Details 174. Listing Erasure Code profiles 174 10.4 Erasure Coded Pools with rados block device 174 11 Cache Tiering 175 11.1 Tiered Storage Terminology 175 11.2 Points to Consider 176 11.3 When to Use Cache tiering 176 Administration guide 11.4 Cache modes 177 11.5 Erasure Coded Pool and Cache Tiering 177 11.6 Setting Up an Example Tiered Storage 178 11.7 Configuring a Cache Tier 180 Hit set180· Cache Sizing182· Cache Age184· EXamples184 12 Improving Performance with LVM cache 186 12.1 Prerequisites 186 12.2 Points to consider 186 12.3 Preparation 188 12.4 Configuring LVM cache 188 Adding LVM cache 188. Removing LVM cache 188. Setting LVM cache Mode 189 12.5 Handling Failures 189 12.6 Frequently Asked Questions 189 13 Ceph Cluster Configuration 191 13.1 Runtime Configuration 191 13.2 Ceph osd and blue store 192 Automatic Cache sizing 192 3.3 Ceph object Gateway 193 GeneralSettings193.httpFront-ends202 I ACCESSING CLUSTER DATA 205 14 Ceph Object Gateway 206 14.1 Object Gateway Restrictions and Naming Limitations 206 BucketLimitations206.StoredobjectLimitations206.httpheAder Limitations 207 14.2 ploying the object gateway 207 14.3 Operating the object Gateway Service 207 14.4 Configuration Options 208 14.5 Managing Object Gateway Access 208 Accessing Object Gateway 208. Managing S3 and Swift Accounts 210 14.6 Http Front-ends 214 14.7 Enabling Https/ssl for Object Gateways 214 Create a Self-signed Certificate 215. Simple Https Configuration216.AdvancedhttpsConfiguration216 14.8 Synchronization Modules 217 General Configuration 217 .Synchronizing Zones 218. ElasticSearch ynchronization Module 220. Cloud Synchronization Module 223 14.9 LDAP Authentication 227 Authentication Mechanism 227 Requirements 228 Configure Object Gateway to use ldaP authentication 228. Using a Custom Search Filter to Limit User Access 229. generating an access token for LdAP authentication 230 14.10 Bucket Index sharding 231 Bucket Index Resharding 231 Bucket Index Sharding for New Buckets 234 14.11 Integrating Open Stack Keystone 235 Configuring Open Stack 235 Configuring the Ceph object Gateway 236 14.12 Pool Placement and storage Classes 239 Placement Targets 239. Storage Classes 239. Zonegroup/Zone Configuration 239. Customizing Placement 242. Using Storage Classes 243 14.13 Multisite object gateways 243 Terminology 244. Example Cluster Setup 244. System Keys245· Naming Conventions245· Default pools246· Creating a Realm 246. Deleting the Default Zonegroup 247. Creating a Master Zonegroup 247 Creating a Master Zone 248. Creating a Secondary Zone 251 Adding object Gateway to the Second Cluster 254. Failover and Disaster Recovery 259 Administration guide

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