Mysql
基於 IPSec 的 MariaDB Galera 集群
我正在擴展我的伺服器基礎設施，因此我在第二個數據中心訂購了伺服器，我想將其用作故障轉移位置。
為了更好地辨識，我將使用“ffm1”作為主數據中心，使用“ffm2”作為故障轉移位置。
在這兩個位置上，我都有一個複制的 pfSense 防火牆，它通過 IPSec 隧道連接。
10.0.0.0/16 - ffm1 本地子網 10.3.0.0/16 - ffm2 本地子網
10.1.0.0/16 和 10.2.0.0/16 保留給其他具有互連的數據中心。
目前大多數東西都可以使用 IPSec 隧道正常工作：我可以使用我的內部儲存庫、dns 伺服器、ldap 等。
在 ffm1 上，我有一個 HA Gelera 集群，其中包含 4 個 MariaDB 節點和兩個 MaxScale 實例，它們由我的 pfSense 負載平衡器進行故障轉移平衡。
現在我想在 ffm2 上擴展集群。兩個數據中心都用 2 x 100GBit 連接，我在兩邊都有 2 x 10Gbit 上行鏈路，所以應該沒問題。
所以我在 ffm2 上安裝了一個 Node 並設置了 Gelra 配置：
# # * Galera-related settings # [galera] # Mandatory settings wsrep_on=ON wsrep_provider=/usr/lib64/galera/libgalera_smm.so wsrep_cluster_address=gcomm://10.0.5.11,10.0.5.12,10.0.5.13,10.0.5.14,10.3.0.26 binlog_format=row default_storage_engine=InnoDB innodb_autoinc_lock_mode=2但是當我嘗試啟動 mariadb 時，我得到了一個錯誤。我可以找到以下日誌條目：
Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: Read nil XID from storage engines, skipping position init Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: wsrep_load(): loading provider library '/usr/lib64/galera/libgalera_smm.so' Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: wsrep_load(): Galera 25.3.26(r3857) by Codership Oy <info@codership.com> loaded successfully. Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: CRC-32C: using "slicing-by-8" algorithm. Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: Found saved state: 00000000-0000-0000-0000-000000000000:-1, safe_to_bootstrap: 1 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: Passing config to GCS: base_dir = /var/lib/mysql/; base_host = 10.3.0.26; base_port = 4567; cert.log_conflicts = no; cert.optimistic_pa = yes; debug = no; evs.auto_evict = 0; evs.delay_margin = PT1S; evs.delayed_keep_period = PT30S; evs.inactive_check_period = PT0.5S; evs.inactive_timeout = PT15S; evs.join_retrans_period = PT1S; evs.max_install_timeouts = 3; evs.send_window = 4; evs.stats_report_period = PT1M; evs.suspect_timeout = PT5S; evs.user_send_window = 2; evs.view_forget_timeout = PT24H; gcache.dir = /var/lib/mysql/; gcache.keep_pages_size = 0; gcache.mem_size = 0; gcache.name = /var/lib/mysql//galera.cache; gcache.page_size = 128M; gcache.recover = no; gcache.size = 128M; gcomm.thread_prio = ; gcs.fc_debug = 0; gcs.fc_factor = 1.0; gcs.fc_limit = 16; gcs.fc_master_slave = no; gcs.max_packet_size = 64500; gcs.max_throttle = 0.25; gcs.recv_q_hard_limit = 9223372036854775807; gcs.recv_q_soft_limit = 0.25; gcs.sync_donor = no; gmcast.segment = 0; gmcast.version = 0; pc.announce_timeout = PT3S; pc Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: GCache history reset: 886e1511-9278-11e9-b808-5bf36b96cc3c:0 -> 00000000-0000-0000-0000-000000000000:-1 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: Assign initial position for certification: -1, protocol version: -1 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: wsrep_sst_grab() Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: Start replication Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: Setting initial position to 00000000-0000-0000-0000-000000000000:-1 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: protonet asio version 0 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: Using CRC-32C for message checksums. Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: backend: asio Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: gcomm thread scheduling priority set to other:0 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Warning] WSREP: access file(/var/lib/mysql//gvwstate.dat) failed(No such file or directory) Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: restore pc from disk failed Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: GMCast version 0 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: (0f8b0c37, 'tcp://0.0.0.0:4567') listening at tcp://0.0.0.0:4567 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: (0f8b0c37, 'tcp://0.0.0.0:4567') multicast: , ttl: 1 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: EVS version 0 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: gcomm: connecting to group 'my_wsrep_cluster', peer '10.0.5.11:,10.0.5.12:,10.0.5.13:,10.0.5.14:,10.3.0.26:' Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: (0f8b0c37, 'tcp://0.0.0.0:4567') connection established to 0f8b0c37 tcp://10.3.0.26:4567 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Warning] WSREP: (0f8b0c37, 'tcp://0.0.0.0:4567') address 'tcp://10.3.0.26:4567' points to own listening address, blacklisting Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: (0f8b0c37, 'tcp://0.0.0.0:4567') connection established to 2c2ef983 tcp://10.0.5.13:4567 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: (0f8b0c37, 'tcp://0.0.0.0:4567') turning message relay requesting on, nonlive peers: Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: (0f8b0c37, 'tcp://0.0.0.0:4567') connection established to d4b50fbb tcp://10.0.5.11:4567 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: (0f8b0c37, 'tcp://0.0.0.0:4567') connection established to c241e84f tcp://10.0.5.12:4567 Aug 24 09:37:44 ffcdb1 mysqld: 2019-08-24 9:37:44 0 [Note] WSREP: (0f8b0c37, 'tcp://0.0.0.0:4567') connection established to 3f000499 tcp://10.0.5.14:4567 Aug 24 09:37:45 ffcdb1 mysqld: 2019-08-24 9:37:45 0 [Warning] WSREP: last inactive check more than PT1.5S ago (PT1.50881S), skipping check Aug 24 09:37:46 ffcdb1 mysqld: 2019-08-24 9:37:46 0 [Note] WSREP: declaring 2c2ef983 at tcp://10.0.5.13:4567 stable Aug 24 09:37:46 ffcdb1 mysqld: 2019-08-24 9:37:46 0 [Note] WSREP: declaring 3f000499 at tcp://10.0.5.14:4567 stable Aug 24 09:37:46 ffcdb1 mysqld: 2019-08-24 9:37:46 0 [Note] WSREP: declaring c241e84f at tcp://10.0.5.12:4567 stable Aug 24 09:37:46 ffcdb1 mysqld: 2019-08-24 9:37:46 0 [Note] WSREP: declaring d4b50fbb at tcp://10.0.5.11:4567 stable Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: (0f8b0c37, 'tcp://0.0.0.0:4567') connection to peer 0f8b0c37 with addr tcp://10.3.0.26:4567 timed out, no messages seen in PT3S Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Node 2c2ef983 state prim Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: view(view_id(PRIM,0f8b0c37,83) memb { Aug 24 09:37:47 ffcdb1 mysqld: 0f8b0c37,0 Aug 24 09:37:47 ffcdb1 mysqld: 2c2ef983,0 Aug 24 09:37:47 ffcdb1 mysqld: 3f000499,0 Aug 24 09:37:47 ffcdb1 mysqld: c241e84f,0 Aug 24 09:37:47 ffcdb1 mysqld: d4b50fbb,0 Aug 24 09:37:47 ffcdb1 mysqld: } joined { Aug 24 09:37:47 ffcdb1 mysqld: } left { Aug 24 09:37:47 ffcdb1 mysqld: } partitioned { Aug 24 09:37:47 ffcdb1 mysqld: }) Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: save pc into disk Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: (0f8b0c37, 'tcp://0.0.0.0:4567') turning message relay requesting off Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: gcomm: connected Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Changing maximum packet size to 64500, resulting msg size: 32636 Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Shifting CLOSED -> OPEN (TO: 0) Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Opened channel 'my_wsrep_cluster' Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: New COMPONENT: primary = yes, bootstrap = no, my_idx = 0, memb_num = 5 Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Waiting for SST to complete. Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: STATE_EXCHANGE: sent state UUID: 11a1a631-c642-11e9-9bf8-2a2f60544da4 Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: STATE EXCHANGE: sent state msg: 11a1a631-c642-11e9-9bf8-2a2f60544da4 Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: STATE EXCHANGE: got state msg: 11a1a631-c642-11e9-9bf8-2a2f60544da4 from 0 (ffcdb1.HOSTNAME.de) Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: STATE EXCHANGE: got state msg: 11a1a631-c642-11e9-9bf8-2a2f60544da4 from 1 (db3.HOSTNAME.intern) Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: STATE EXCHANGE: got state msg: 11a1a631-c642-11e9-9bf8-2a2f60544da4 from 2 (db4.HOSTNAME.intern) Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: STATE EXCHANGE: got state msg: 11a1a631-c642-11e9-9bf8-2a2f60544da4 from 3 (db2.HOSTNAME.intern) Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: STATE EXCHANGE: got state msg: 11a1a631-c642-11e9-9bf8-2a2f60544da4 from 4 (db1.HOSTNAME.intern) Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Quorum results: Aug 24 09:37:47 ffcdb1 mysqld: version = 4, Aug 24 09:37:47 ffcdb1 mysqld: component = PRIMARY, Aug 24 09:37:47 ffcdb1 mysqld: conf_id = 67, Aug 24 09:37:47 ffcdb1 mysqld: members = 4/5 (joined/total), Aug 24 09:37:47 ffcdb1 mysqld: act_id = 26678596, Aug 24 09:37:47 ffcdb1 mysqld: last_appl. = -1, Aug 24 09:37:47 ffcdb1 mysqld: protocols = 0/9/3 (gcs/repl/appl), Aug 24 09:37:47 ffcdb1 mysqld: group UUID = 886e1511-9278-11e9-b808-5bf36b96cc3c Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Flow-control interval: [36, 36] Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Trying to continue unpaused monitor Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Shifting OPEN -> PRIMARY (TO: 26678596) Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 2 [Note] WSREP: State transfer required: Aug 24 09:37:47 ffcdb1 mysqld: Group state: 886e1511-9278-11e9-b808-5bf36b96cc3c:26678596 Aug 24 09:37:47 ffcdb1 mysqld: Local state: 00000000-0000-0000-0000-000000000000:-1 Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 2 [Note] WSREP: New cluster view: global state: 886e1511-9278-11e9-b808-5bf36b96cc3c:26678596, view# 68: Primary, number of nodes: 5, my index: 0, protocol version 3 Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 2 [Warning] WSREP: Gap in state sequence. Need state transfer. Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Running: 'wsrep_sst_rsync --role 'joiner' --address '10.3.0.26' --datadir '/var/lib/mysql/' --parent '809' '' ''' Aug 24 09:37:47 ffcdb1 rsyncd[859]: rsyncd version 3.1.2 starting, listening on port 4444 Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 2 [Note] WSREP: Prepared SST request: rsync|10.3.0.26:4444/rsync_sst Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 2 [Note] WSREP: wsrep_notify_cmd is not defined, skipping notification. Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 2 [Note] WSREP: REPL Protocols: 9 (4, 2) Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 2 [Note] WSREP: Assign initial position for certification: 26678596, protocol version: 4 Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Service thread queue flushed. Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 2 [Warning] WSREP: Failed to prepare for incremental state transfer: Local state UUID (00000000-0000-0000-0000-000000000000) does not match group state UUID (886e1511-9278-11e9-b808-5bf36b96cc3c): 1 (Operation not permitted) Aug 24 09:37:47 ffcdb1 mysqld: at galera/src/replicator_str.cpp:prepare_for_IST():482. IST will be unavailable. Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Member 0.0 (ffcdb1.HOSTNAME.de) requested state transfer from '*any*'. Selected 1.0 (db3.HOSTNAME.intern)(SYNCED) as donor. Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 0 [Note] WSREP: Shifting PRIMARY -> JOINER (TO: 26678596) Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 2 [Note] WSREP: Requesting state transfer: success, donor: 1 Aug 24 09:37:47 ffcdb1 mysqld: 2019-08-24 9:37:47 2 [Note] WSREP: GCache history reset: 00000000-0000-0000-0000-000000000000:0 -> 886e1511-9278-11e9-b808-5bf36b96cc3c:26678596 Aug 24 09:37:51 ffcdb1 rsyncd[891]: name lookup failed for 10.0.5.13: Name or service not known Aug 24 09:37:51 ffcdb1 rsyncd[891]: connect from UNKNOWN (10.0.5.13) Aug 24 09:37:51 ffcdb1 rsyncd[891]: rsync to rsync_sst/ from UNKNOWN (10.0.5.13) Aug 24 09:37:51 ffcdb1 rsyncd[891]: receiving file list Aug 24 09:37:51 ffcdb1 rsyncd[891]: sent 25 bytes received 336 bytes total size 0 Aug 24 09:37:51 ffcdb1 rsyncd[893]: name lookup failed for 10.0.5.13: Name or service not known Aug 24 09:37:51 ffcdb1 rsyncd[893]: connect from UNKNOWN (10.0.5.13) Aug 24 09:37:51 ffcdb1 rsyncd[893]: rsync to rsync_sst-data_dir/ from UNKNOWN (10.0.5.13) Aug 24 09:37:51 ffcdb1 rsyncd[893]: receiving file list Aug 24 09:37:52 ffcdb1 kernel: random: crng init done Aug 24 09:38:09 ffcdb1 rsyncd[893]: sent 44 bytes received 281087150 bytes total size 281018368 Aug 24 09:38:09 ffcdb1 rsyncd[964]: name lookup failed for 10.0.5.13: Name or service not known Aug 24 09:38:09 ffcdb1 rsyncd[964]: connect from UNKNOWN (10.0.5.13) Aug 24 09:38:09 ffcdb1 rsyncd[964]: rsync to rsync_sst-log_dir/ from UNKNOWN (10.0.5.13) Aug 24 09:38:09 ffcdb1 rsyncd[964]: receiving file list Aug 24 09:38:16 ffcdb1 rsyncd[964]: sent 63 bytes received 100688097 bytes total size 100663296 Aug 24 09:38:16 ffcdb1 rsyncd[997]: name lookup failed for 10.0.5.13: Name or service not known Aug 24 09:38:16 ffcdb1 rsyncd[998]: name lookup failed for 10.0.5.13: Name or service not known Aug 24 09:38:16 ffcdb1 rsyncd[997]: connect from UNKNOWN (10.0.5.13) Aug 24 09:38:16 ffcdb1 rsyncd[998]: connect from UNKNOWN (10.0.5.13) Aug 24 09:38:16 ffcdb1 rsyncd[998]: rsync to rsync_sst/./test from UNKNOWN (10.0.5.13) Aug 24 09:38:16 ffcdb1 rsyncd[997]: rsync to rsync_sst/./designeroutlet_live from UNKNOWN (10.0.5.13) Aug 24 09:38:16 ffcdb1 rsyncd[998]: receiving file list Aug 24 09:38:16 ffcdb1 rsyncd[997]: receiving file list Aug 24 09:38:16 ffcdb1 rsyncd[998]: sent 48 bytes received 225 bytes total size 65 Aug 24 09:38:16 ffcdb1 rsyncd[1001]: name lookup failed for 10.0.5.13: Name or service not known Aug 24 09:38:16 ffcdb1 rsyncd[1001]: connect from UNKNOWN (10.0.5.13) Aug 24 09:38:16 ffcdb1 rsyncd[1001]: rsync to rsync_sst/./mysql from UNKNOWN (10.0.5.13) Aug 24 09:38:16 ffcdb1 rsyncd[1001]: receiving file list Aug 24 09:38:16 ffcdb1 rsyncd[1001]: sent 1739 bytes received 1228736 bytes total size 1222390 Aug 24 09:38:16 ffcdb1 rsyncd[1007]: name lookup failed for 10.0.5.13: Name or service not known Aug 24 09:38:16 ffcdb1 rsyncd[1007]: connect from UNKNOWN (10.0.5.13) Aug 24 09:38:16 ffcdb1 rsyncd[1007]: rsync to rsync_sst/./performance_schema from UNKNOWN (10.0.5.13) Aug 24 09:38:17 ffcdb1 rsyncd[1007]: receiving file list Aug 24 09:38:17 ffcdb1 rsyncd[1007]: sent 48 bytes received 221 bytes total size 61 Aug 24 09:38:45 ffcdb1 systemd: Created slice User Slice of root. Aug 24 09:38:45 ffcdb1 systemd-logind: New session 1 of user root. Aug 24 09:38:45 ffcdb1 systemd: Started Session 1 of user root. Aug 24 09:39:14 ffcdb1 systemd: mariadb.service start operation timed out. Terminating. Aug 24 09:39:14 ffcdb1 mysqld: Terminated Aug 24 09:39:14 ffcdb1 mysqld: WSREP_SST: [INFO] Joiner cleanup. rsync PID: 859 (20190824 09:39:14.291) Aug 24 09:39:14 ffcdb1 rsyncd[859]: sent 0 bytes received 0 bytes total size 0 Aug 24 09:39:14 ffcdb1 rsyncd[997]: rsync error: received SIGINT, SIGTERM, or SIGHUP (code 20) at io.c(504) [generator=3.1.2] Aug 24 09:39:14 ffcdb1 rsyncd[997]: rsync error: received SIGINT, SIGTERM, or SIGHUP (code 20) at io.c(504) [receiver=3.1.2] Aug 24 09:39:14 ffcdb1 mysqld: WSREP_SST: [INFO] Joiner cleanup done. (20190824 09:39:14.824) Aug 24 09:40:44 ffcdb1 systemd: mariadb.service stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode. Aug 24 09:40:44 ffcdb1 systemd: Failed to start MariaDB 10.3.16 database server. Aug 24 09:40:44 ffcdb1 systemd: Unit mariadb.service entered failed state. Aug 24 09:40:44 ffcdb1 systemd: mariadb.service failed. Aug 24 09:40:44 ffcdb1 systemd: Reached target Multi-User System. Aug 24 09:40:44 ffcdb1 systemd: Starting Update UTMP about System Runlevel Changes... Aug 24 09:40:44 ffcdb1 systemd: Started Update UTMP about System Runlevel Changes. Aug 24 09:40:44 ffcdb1 systemd: Startup finished in 579ms (kernel) + 916ms (initrd) + 3min 4.123s (userspace) = 3min 5.618s. Aug 24 09:41:44 ffcdb1 rsyncd[1000]: rsync: [receiver] write error: Broken pipe (32) Aug 24 09:41:44 ffcdb1 mysqld: 2019-08-24 9:41:44 0 [ERROR] WSREP: Process completed with error: wsrep_sst_rsync --role 'joiner' --address '10.3.0.26' --datadir '/var/lib/mysql/' --parent '809' '' '': 3 (No such process) Aug 24 09:41:44 ffcdb1 mysqld: 2019-08-24 9:41:44 0 [ERROR] WSREP: Failed to read uuid:seqno and wsrep_gtid_domain_id from joiner script. Aug 24 09:41:44 ffcdb1 mysqld: 2019-08-24 9:41:44 0 [ERROR] WSREP: SST failed: 3 (No such process) Aug 24 09:41:44 ffcdb1 mysqld: 2019-08-24 9:41:44 0 [ERROR] Aborting Aug 24 09:41:44 ffcdb1 mysqld: 2019-08-24 9:41:44 0 [Warning] WSREP: 1.0 (db3.HOSTNAME.intern): State transfer to 0.0 (ffcdb1.HOSTNAME.de) failed: -255 (Unknown error 255) Aug 24 09:41:44 ffcdb1 mysqld: 2019-08-24 9:41:44 0 [ERROR] WSREP: gcs/src/gcs_group.cpp:gcs_group_handle_join_msg():737: Will never receive state. Need to abort.知道為什麼嗎？SELinux 被禁用並且所需的埠是打開的（tcp 和 udp，已經過測試！）。
我無法解釋，這是為什麼呢？
我知道，我還是要做DNS解析！但這不是錯誤，不是嗎？
編輯：也許作業系統版本也很重要：我使用的是 Centos7。
當我在 ffm2 中啟動 Mariadb 服務並檢查集群大小時，我得到了 5 的大小（這是正確的），在啟動命令崩潰後，它又回到了 4。
所以我認為溝通基本上是成功的，不是嗎？
更新 2：當我刪除 galera Stuff 並啟動 Mariadb 服務時，它正在工作，並且我還擁有集群中的所有可用數據。很奇怪…
沒有線索？
通過為 systemd 服務設置更高的超時限制來修復。第一次啟動過程需要太多時間來進行第一次同步。