Background When running a certain system, the test class stores a certain value into redis and then takes it out. 1. Problems encountered Error reported: org.springframework.data.redis.RedisSystemException: Error in execution; nested exception is io.lettuce.core.RedisCommandExecutionException: MISCONF Redis is configured to save RDB snapshots, but it is currently not able to persist on disk. Commands that may modify […]
Tag: sys
bclinux aarch64 ceph 14.2.10 file storage Ceph File System, you need to deploy mds: ceph-deploy mds
Createapool [root@ceph-0~]#cephosdpoolcreatecephfs_data64pool’cephfs_data’created[root@ceph-0~]#cephosdpoolcreatecephfs_metadata32pool’cephfs_metadata’created cephfs_metadata64error Officialdescription: Metadatapoolstypicallyholduptoafewgigabytesofdata.Forthisreason,itisgenerallyrecommendedtouseasmallerPGcount.Typically64or128isusedinpracticeforlargeclusters. poollist [root@ceph-0~]#cephosdpoollsvdbenchcephfs_datacephfs_metadata Createfilesystem [root@ceph-0~]#cephfsnewcephfscephfs_metadatacephfs_datanewfswithmetadatapool4anddatapool3[root@ceph-0~]#cephfslsname:cephfs,metadatapool:cephfs_metadata,datapools:[cephfs_data] Filesystemstatus [root@ceph-0~]#cephfsstatuscephfscephfs-0clients======+——+——-+—–+———-+—–+——+|Rank|State|MDS|Activity|dns|inos|+——+——-+—–+———-+—–+——++——+——-+—–+———-+—–+——++—————–+———-+——-+——-+|Pool|type|used|avail|+—————–+———-+——-+——-+|cephfs_metadata|metadata|0|103G||cephfs_data|data|0|103G|+—————–+———-+——-+——-++————-+|StandbyMDS|+————-++————-++———+———+|version|daemons|+———+———++———+———+ Clusterstatus [root@ceph-0~]#ceph-scluster:id:ff72b496-d036-4f1b-b2ad-55358f3c16cbhealth:HEALTH_ERR1filesystemisoffline1filesystemisonlinewithfewerMDSthanmax_mdsmonceph-0islowonavailablespace services:mon:4daemons,quorumceph-3,ceph-1,ceph-0,ceph-2(age4h)mgr:ceph-0(active,since45h),standbys:ceph-1,ceph-3,ceph-2mds:cephfs:0osds:4osds:3up(since45h),3in(since44h) data:pools:3pools,224pgsobjects:4.30kobjects,17GiBusage:53GiBused,247GiB/300GiBavailablepgs:224active+clean Viewmdsstatus(x) [root@ceph-0~]#cephmdsstatcephfs:0 mdshasnoreadynode Thisserviceisnotdeployedbasedonceph-deploy ceph-deploydeploymds ceph-deploymdscreateceph-0ceph-1ceph-2ceph-3 Deploymentsuccesslog [root@ceph-0~]#cd/etc/ceph/ [root@ceph-0ceph]#ceph-deploymdscreateceph-0ceph-1ceph-2ceph-3 [ceph_deploy.conf][DEBUG]foundconfigurationfileat:/root/.cephdeploy.conf [ceph_deploy.cli][INFO]Invoked(2.0.1):/usr/bin/ceph-deploymdscreateceph-0ceph-1ceph-2ceph-3 [ceph_deploy.cli][INFO]ceph-deployoptions: [ceph_deploy.cli][INFO]username:None [ceph_deploy.cli][INFO]verbose:False [ceph_deploy.cli][INFO]overwrite_conf:False [ceph_deploy.cli][INFO]subcommand:create [ceph_deploy.cli][INFO]quiet:False [ceph_deploy.cli][INFO]cd_conf:<ceph_deploy.conf.cephdeploy.Confinstanceat0xffff976c7640> [ceph_deploy.cli][INFO]cluster:ceph [ceph_deploy.cli][INFO]func:<functionmdsat0xffff977620d0> [ceph_deploy.cli][INFO]ceph_conf:None [ceph_deploy.cli][INFO]mds:[(‘ceph-0′,’ceph-0’),(‘ceph-1′,’ceph-1’),(‘ceph-2′,’ceph-2’),(‘ceph-3′,’ceph-3’)] [ceph_deploy.cli][INFO]default_release:False [ceph_deploy.mds][DEBUG]Deployingmds,clustercephhostsceph-0:ceph-0ceph-1:ceph-1ceph-2:ceph-2ceph-3:ceph-3 [ceph-0][DEBUG]connectedtohost:ceph-0 [ceph-0][DEBUG]detectplatforminformationfromremotehost 21.10U3LTS bclinux [ceph-0][DEBUG]detectmachinetype [ceph_deploy.mds][INFO]Distroinfo:bclinux21.10U321.10U3LTS [ceph_deploy.mds][DEBUG]remotehostwillusesystemd [ceph_deploy.mds][DEBUG]deployingmdsbootstraptoceph-0 [ceph-0][DEBUG]writeclusterconfigurationto/etc/ceph/{cluster}.conf [ceph-0][WARNIN]mdskeyringdoesnotexistyet,creatingone [ceph-0][DEBUG]createakeyringfile [ceph-0][DEBUG]createpathifitdoesn’texist [ceph-0][INFO]Runningcommand:ceph–clusterceph–nameclient.bootstrap-mds–keyring/var/lib/ceph/bootstrap-mds/ceph.keyringauthget-or-createmds.ceph-0osdallowrwxmdsallowmonallowprofilemds-o/var/lib/ceph/mds/ceph-ceph-0/keyring [ceph-0][INFO]Runningcommand:systemctlenableceph-mds@ceph-0 [ceph-0][WARNIN]Createdsymlink/etc/systemd/system/ceph-mds.target.wants/[email protected]→/usr/lib/systemd/system/[email protected]. [ceph-0][INFO]Runningcommand:systemctlstartceph-mds@ceph-0 […]
Design practice of tens of millions of high-availability distributed reconciliation systems
Programmer Hei Ge 2023-11-10 15:55 Published in Hunan included in collection #Code 14 #Design1 #Java218 #programming141 #programmer157 Background At present, online business volume is increasing day by day, with daily orders exceeding tens of millions, capital flows are large, and capital security has become a key concern. In order to ensure the accuracy of each […]
[Moore Thread] Magic Pen Ma Liang U disk Ubuntu system deployment
MobiMaliang Deploy on Ubuntu20.04 [Moore Thread] Magic Pen Ma Liang U disk Ubuntu system deployment PDF document and automatic installation script link, Lanzouyun: https://wwft.lanzoul.com/b052nz4rc Password: 95s7 The script needs to change the txt suffix to sh. and add execution permissions. sudo chmod + x ./UbuntuDeploy.sh 0. Preset 0. Please first apply for a developer account […]
Android system properties (SystemProperties)
1. System properties System properties are key-value pairs with special meanings in the system. We sometimes need to use system properties during the development process, such as getting the system software version, getting the device name, etc. Sometimes we also need to set custom properties. System properties are global and easy to access. 2. Get […]
[Dos system] Windows black box
1. Directory operation commands 1. Introduction: The operation commands mentioned next are also called “DOS commands”; It is used in DOS systems, and DOS systems are compatible with Windows systems. 2.DOS system operation: win + R —-> Open the run window —-> Enter cmd —–> Press Enter and it will open The prompt information for […]
Git version control system branches and tags (version)
Table of Contents 1. Git branch (Branch) 1.1 Branch function 1.2 Four branch management strategies 1.3 Use cases 1.3.1 Instructions 1.3.2 Use in combination with application scenarios 2. Git tag (Tag) 2.1 Label function 2.2 Label specifications 2.3 Use cases 2.3.1 Instructions 2.3.2 Usage examples 1. Git Branch (Branch) Branching is a key concept when […]
Computer Java Project Recommendation Hospital Appointment Registration System Based on SSM_2
Project Introduction : The system is designed with three user roles: administrator, user, and doctor. Basic functional modules include doctor scheduling, online appointment registration, payment, medical record inquiry, prescription viewing, etc. Compared with other information management systems, this system has more special functions, such as department screening of doctors, medical record inquiry, etc. Users can […]
Financial data statistical analysis system based on big data
Recommended subscription for wonderful columns: on the homepage below Author’s homepage: Computer graduate student Brother Article directory 1. Project introduction 2. Development environment 3. System display – financial data statistical analysis system based on big data 4. Code display 5. Project Summary You can help like, collect, follow and comment 1. Project introduction 1. Background […]
AI system source code ChatGPT website source code + ai painting system/support GPT4.0/support Midjourney partial editing and redrawing
1. AI creation system SparkAi creation system is an Ai intelligent question and answer system and Midjourney painting system developed based on OpenAI’s popular ChatGPT. It supports the full model of OpenAI-GPT + the full model of domestic AI. The overall test of the source code system in this issue is very perfect. It can […]