关于Cannot connect to database server,Exception:Could not create connection to database server. Attemp

解决MySQL8.0时区连接问题
本文解决了一个常见的问题:使用mysql8.0驱动连接数据库时因时区设置导致的连接失败。通过在URL中添加serverTimezone=UTC参数,成功解决了项目无法连接到mysql8.0的问题。

由于以前一直采用的mysql5,这次安装了mysql8,发现按照平常的连接方式连接会出现这样的问题

因为我的驱动采用了mysql8.0的驱动

后面发现问题处在了时区的情况(重点。。。。重点。。。。。重点)(因为我的navicate都是连接上mysql8.0的,就偏偏项目连接不上)

解决方案:在url后面需要添加   serverTimezone=UTC,如下图所示:

[root@node1 ~]# systemctl status kubelet ● kubelet.service - kubelet: The Kubernetes Node Agent Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled) Drop-In: /usr/lib/systemd/system/kubelet.service.d └─10-kubeadm.conf Active: active (running) since 五 2025-08-01 08:35:44 CST; 3h 3min ago Docs: https://kubernetes.io/docs/ Main PID: 1015 (kubelet) Tasks: 24 Memory: 184.4M CGroup: /system.slice/kubelet.service ├─ 1015 /usr/bin/kubelet --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-k... └─118013 /opt/cni/bin/calico 8月 01 11:26:32 node1 kubelet[1015]: E0801 11:26:31.969872 1015 kubelet.go:2055]...wn" 8月 01 11:26:32 node1 kubelet[1015]: E0801 11:26:32.134439 1015 kubelet.go:2055]...wn" 8月 01 11:26:32 node1 kubelet[1015]: E0801 11:26:32.353146 1015 kubelet.go:2055]...wn" 8月 01 11:27:34 node1 kubelet[1015]: E0801 11:27:34.311794 1015 remote_runtime.g...-r] 8月 01 11:28:01 node1 kubelet[1015]: E0801 11:28:01.897912 1015 remote_runtime.g...-l] 8月 01 11:28:01 node1 kubelet[1015]: E0801 11:28:01.898123 1015 remote_runtime.g...ve] 8月 01 11:28:16 node1 kubelet[1015]: E0801 11:28:16.292057 1015 controller.go:18...e1) 8月 01 11:28:26 node1 kubelet[1015]: E0801 11:28:26.579554 1015 controller.go:18...e1) 8月 01 11:28:36 node1 kubelet[1015]: E0801 11:28:36.192953 1015 event.go:267] Se...on: 8月 01 11:28:37 node1 kubelet[1015]: E0801 11:28:37.257287 1015 controller.go:18...e1) Hint: Some lines were ellipsized, use -l to show in full. [root@node1 ~]# journalctl -u kubelet -- Logs begin at 五 2025-08-01 08:35:37 CST, end at 五 2025-08-01 11:38:58 CST. -- 8月 01 08:35:44 node1 systemd[1]: Started kubelet: The Kubernetes Node Agent. 8月 01 08:35:45 node1 kubelet[1015]: Flag --network-plugin has been deprecated, will be re 8月 01 08:35:45 node1 kubelet[1015]: Flag --network-plugin has been deprecated, will be re 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.127220 1015 server.go:446] "Kubelet 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.127650 1015 server.go:874] "Client 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.134328 1015 certificate_store.go:13 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.148873 1015 dynamic_cafile_content. 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.519925 1015 server.go:693] "--cgrou 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.521017 1015 container_manager_linux 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.521798 1015 container_manager_linux 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.523211 1015 topology_manager.go:133 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.523320 1015 container_manager_linux 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.524305 1015 state_mem.go:36] "Initi 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.526031 1015 kubelet.go:313] "Using 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.666063 1015 client.go:80] "Connecti 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.666166 1015 client.go:99] "Start do 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.674241 1015 docker_service.go:571] 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.674297 1015 docker_service.go:243] 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.919840 1015 docker_service.go:258] 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.937518 1015 docker_service.go:264] 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.937546 1015 docker_service.go:279] 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.971513 1015 kubelet.go:416] "Attemp 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.971539 1015 kubelet.go:278] "Adding 8月 01 08:35:47 node1 kubelet[1015]: W0801 08:35:47.973862 1015 reflector.go:324] k8s.i 8月 01 08:35:47 node1 kubelet[1015]: E0801 08:35:47.974067 1015 reflector.go:138] k8s.i 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.978639 1015 kubelet.go:289] "Adding 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.978694 1015 apiserver.go:42] "Waiti 8月 01 08:35:47 node1 kubelet[1015]: W0801 08:35:47.983049 1015 reflector.go:324] k8s.i 8月 01 08:35:47 node1 kubelet[1015]: E0801 08:35:47.983178 1015 reflector.go:138] k8s.i 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.997934 1015 kuberuntime_manager.go: 8月 01 08:35:48 node1 kubelet[1015]: E0801 08:35:48.002012 1015 kubelet.go:1351] "Image 8月 01 08:35:48 node1 kubelet[1015]: I0801 08:35:48.002661 1015 server.go:1246] "Starte 8月 01 08:35:48 node1 kubelet[1015]: I0801 08:35:48.006454 1015 server.go:150] "Startin lines 1-34...skipping... -- Logs begin at 五 2025-08-01 08:35:37 CST, end at 五 2025-08-01 11:38:58 CST. -- 8月 01 08:35:44 node1 systemd[1]: Started kubelet: The Kubernetes Node Agent. 8月 01 08:35:45 node1 kubelet[1015]: Flag --network-plugin has been deprecated, will be removed along with dockershim. 8月 01 08:35:45 node1 kubelet[1015]: Flag --network-plugin has been deprecated, will be removed along with dockershim. 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.127220 1015 server.go:446] "Kubelet version" kubeletVersion="v1.23.17" 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.127650 1015 server.go:874] "Client rotation is on, will bootstrap in background" 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.134328 1015 certificate_store.go:130] Loading cert/key pair from "/var/lib/kubelet/pki/kubelet-client-current.pem". 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.148873 1015 dynamic_cafile_content.go:156] "Starting controller" name="client-ca-bundle::/etc/kubernetes/pki/ca.crt" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.519925 1015 server.go:693] "--cgroups-per-qos enabled, but --cgroup-root was not specified. defaulting to /" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.521017 1015 container_manager_linux.go:281] "Container manager verified user specified cgroup-root exists" cgroupRoot=[] 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.521798 1015 container_manager_linux.go:286] "Creating Container Manager object based on Node Config" nodeConfig={RuntimeCgroupsName: SystemCgroupsName: Kubel 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.523211 1015 topology_manager.go:133] "Creating topology manager with policy per scope" topologyPolicyName="none" topologyScopeName="container" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.523320 1015 container_manager_linux.go:321] "Creating device plugin manager" devicePluginEnabled=true 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.524305 1015 state_mem.go:36] "Initialized new in-memory state store" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.526031 1015 kubelet.go:313] "Using dockershim is deprecated, please consider using a full-fledged CRI implementation" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.666063 1015 client.go:80] "Connecting to docker on the dockerEndpoint" endpoint="unix:///var/run/docker.sock" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.666166 1015 client.go:99] "Start docker client with request timeout" timeout="2m0s" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.674241 1015 docker_service.go:571] "Hairpin mode is set but kubenet is not enabled, falling back to HairpinVeth" hairpinMode=promiscuous-bridge 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.674297 1015 docker_service.go:243] "Hairpin mode is set" hairpinMode=hairpin-veth 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.919840 1015 docker_service.go:258] "Docker cri networking managed by the network plugin" networkPluginName="cni" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.937518 1015 docker_service.go:264] "Docker Info" dockerInfo=&{ID:TR27:LZIC:VJGX:A2CU:MC3A:BW45:ETNI:IV4Y:RUBZ:ASER:XW5A:YUOF Containers:32 ContainersRunning: 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.937546 1015 docker_service.go:279] "Setting cgroupDriver" cgroupDriver="systemd" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.971513 1015 kubelet.go:416] "Attempting to sync node with API server" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.971539 1015 kubelet.go:278] "Adding static pod path" path="/etc/kubernetes/manifests" 8月 01 08:35:47 node1 kubelet[1015]: W0801 08:35:47.973862 1015 reflector.go:324] k8s.io/client-go/informers/factory.go:134: failed to list *v1.Node: Get "https://cluster-endpoint:6443/api/v1/nodes?fieldSelect 8月 01 08:35:47 node1 kubelet[1015]: E0801 08:35:47.974067 1015 reflector.go:138] k8s.io/client-go/informers/factory.go:134: Failed to watch *v1.Node: failed to list *v1.Node: Get "https://cluster-endpoint:644 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.978639 1015 kubelet.go:289] "Adding apiserver pod source" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.978694 1015 apiserver.go:42] "Waiting for node sync before watching apiserver pods" 8月 01 08:35:47 node1 kubelet[1015]: W0801 08:35:47.983049 1015 reflector.go:324] k8s.io/client-go/informers/factory.go:134: failed to list *v1.Service: Get "https://cluster-endpoint:6443/api/v1/services?limit 8月 01 08:35:47 node1 kubelet[1015]: E0801 08:35:47.983178 1015 reflector.go:138] k8s.io/client-go/informers/factory.go:134: Failed to watch *v1.Service: failed to list *v1.Service: Get "https://cluster-endpoi 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.997934 1015 kuberuntime_manager.go:249] "Container runtime initialized" containerRuntime="docker" version="20.10.9" apiVersion="1.41.0" 8月 01 08:35:48 node1 kubelet[1015]: E0801 08:35:48.002012 1015 kubelet.go:1351] "Image garbage collection failed once. Stats initialization may not have completed yet" err="failed to get imageFs info: unable 8月 01 08:35:48 node1 kubelet[1015]: I0801 08:35:48.002661 1015 server.go:1246] "Started kubelet" 8月 01 08:35:48 node1 kubelet[1015]: I0801 08:35:48.006454 1015 server.go:150] "Starting to listen" address="0.0.0.0" port=10250 8月 01 08:35:48 node1 kubelet[1015]: I0801 08:35:48.006791 1015 fs_resource_analyzer.go:67] "Starting FS ResourceAnalyzer" lines 1-35 -- Logs begin at 五 2025-08-01 08:35:37 CST, end at 五 2025-08-01 11:38:58 CST. -- 8月 01 08:35:44 node1 systemd[1]: Started kubelet: The Kubernetes Node Agent. 8月 01 08:35:45 node1 kubelet[1015]: Flag --network-plugin has been deprecated, will be re 8月 01 08:35:45 node1 kubelet[1015]: Flag --network-plugin has been deprecated, will be re 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.127220 1015 server.go:446] "Kubelet 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.127650 1015 server.go:874] "Client 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.134328 1015 certificate_store.go:13 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.148873 1015 dynamic_cafile_content. 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.519925 1015 server.go:693] "--cgrou 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.521017 1015 container_manager_linux 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.521798 1015 container_manager_linux 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.523211 1015 topology_manager.go:133 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.523320 1015 container_manager_linux 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.524305 1015 state_mem.go:36] "Initi 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.526031 1015 kubelet.go:313] "Using 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.666063 1015 client.go:80] "Connecti 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.666166 1015 client.go:99] "Start do 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.674241 1015 docker_service.go:571] 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.674297 1015 docker_service.go:243] 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.919840 1015 docker_service.go:258] 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.937518 1015 docker_service.go:264] 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.937546 1015 docker_service.go:279] 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.971513 1015 kubelet.go:416] "Attemp 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.971539 1015 kubelet.go:278] "Adding 8月 01 08:35:47 node1 kubelet[1015]: W0801 08:35:47.973862 1015 reflector.go:324] k8s.i 8月 01 08:35:47 node1 kubelet[1015]: E0801 08:35:47.974067 1015 reflector.go:138] k8s.i 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.978639 1015 kubelet.go:289] "Adding 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.978694 1015 apiserver.go:42] "Waiti 8月 01 08:35:47 node1 kubelet[1015]: W0801 08:35:47.983049 1015 reflector.go:324] k8s.i 8月 01 08:35:47 node1 kubelet[1015]: E0801 08:35:47.983178 1015 reflector.go:138] k8s.i 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.997934 1015 kuberuntime_manager.go: 8月 01 08:35:48 node1 kubelet[1015]: E0801 08:35:48.002012 1015 kubelet.go:1351] "Image 8月 01 08:35:48 node1 kubelet[1015]: I0801 08:35:48.002661 1015 server.go:1246] "Starte 8月 01 08:35:48 node1 kubelet[1015]: I0801 08:35:48.006454 1015 server.go:150] "Startin lines 1-34 -- Logs begin at 五 2025-08-01 08:35:37 CST, end at 五 2025-08-01 11:38:58 CST. -- 8月 01 08:35:44 node1 systemd[1]: Started kubelet: The Kubernetes Node Agent. 8月 01 08:35:45 node1 kubelet[1015]: Flag --network-plugin has been deprecated, will be removed along with dockershim. 8月 01 08:35:45 node1 kubelet[1015]: Flag --network-plugin has been deprecated, will be removed along with dockershim. 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.127220 1015 server.go:446] "Kubelet version" kubeletVersion="v1.23.17" 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.127650 1015 server.go:874] "Client rotation is on, will bootstrap in background" 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.134328 1015 certificate_store.go:130] Loading cert/key pair from "/var/lib/kubelet/pki/kubelet-client-current.pem". 8月 01 08:35:45 node1 kubelet[1015]: I0801 08:35:45.148873 1015 dynamic_cafile_content.go:156] "Starting controller" name="client-ca-bundle::/etc/kubernetes/pki/ca.crt" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.519925 1015 server.go:693] "--cgroups-per-qos enabled, but --cgroup-root was not specified. defaulting to /" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.521017 1015 container_manager_linux.go:281] "Container manager verified user specified cgroup-root exists" cgroupRoot=[] 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.521798 1015 container_manager_linux.go:286] "Creating Container Manager object based on Node Config" nodeConfig={RuntimeCgroupsName: SystemCgroupsName: Kubel 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.523211 1015 topology_manager.go:133] "Creating topology manager with policy per scope" topologyPolicyName="none" topologyScopeName="container" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.523320 1015 container_manager_linux.go:321] "Creating device plugin manager" devicePluginEnabled=true 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.524305 1015 state_mem.go:36] "Initialized new in-memory state store" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.526031 1015 kubelet.go:313] "Using dockershim is deprecated, please consider using a full-fledged CRI implementation" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.666063 1015 client.go:80] "Connecting to docker on the dockerEndpoint" endpoint="unix:///var/run/docker.sock" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.666166 1015 client.go:99] "Start docker client with request timeout" timeout="2m0s" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.674241 1015 docker_service.go:571] "Hairpin mode is set but kubenet is not enabled, falling back to HairpinVeth" hairpinMode=promiscuous-bridge 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.674297 1015 docker_service.go:243] "Hairpin mode is set" hairpinMode=hairpin-veth 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.919840 1015 docker_service.go:258] "Docker cri networking managed by the network plugin" networkPluginName="cni" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.937518 1015 docker_service.go:264] "Docker Info" dockerInfo=&{ID:TR27:LZIC:VJGX:A2CU:MC3A:BW45:ETNI:IV4Y:RUBZ:ASER:XW5A:YUOF Containers:32 ContainersRunning: 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.937546 1015 docker_service.go:279] "Setting cgroupDriver" cgroupDriver="systemd" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.971513 1015 kubelet.go:416] "Attempting to sync node with API server" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.971539 1015 kubelet.go:278] "Adding static pod path" path="/etc/kubernetes/manifests" 8月 01 08:35:47 node1 kubelet[1015]: W0801 08:35:47.973862 1015 reflector.go:324] k8s.io/client-go/informers/factory.go:134: failed to list *v1.Node: Get "https://cluster-endpoint:6443/api/v1/nodes?fieldSelect 8月 01 08:35:47 node1 kubelet[1015]: E0801 08:35:47.974067 1015 reflector.go:138] k8s.io/client-go/informers/factory.go:134: Failed to watch *v1.Node: failed to list *v1.Node: Get "https://cluster-endpoint:644 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.978639 1015 kubelet.go:289] "Adding apiserver pod source" 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.978694 1015 apiserver.go:42] "Waiting for node sync before watching apiserver pods" 8月 01 08:35:47 node1 kubelet[1015]: W0801 08:35:47.983049 1015 reflector.go:324] k8s.io/client-go/informers/factory.go:134: failed to list *v1.Service: Get "https://cluster-endpoint:6443/api/v1/services?limit 8月 01 08:35:47 node1 kubelet[1015]: E0801 08:35:47.983178 1015 reflector.go:138] k8s.io/client-go/informers/factory.go:134: Failed to watch *v1.Service: failed to list *v1.Service: Get "https://cluster-endpoi 8月 01 08:35:47 node1 kubelet[1015]: I0801 08:35:47.997934 1015 kuberuntime_manager.go:249] "Container runtime initialized" containerRuntime="docker" version="20.10.9" apiVersion="1.41.0" 8月 01 08:35:48 node1 kubelet[1015]: E0801 08:35:48.002012 1015 kubelet.go:1351] "Image garbage collection failed once. Stats initialization may not have completed yet" err="failed to get imageFs info: unable 8月 01 08:35:48 node1 kubelet[1015]: I0801 08:35:48.002661 1015 server.go:1246] "Started kubelet" 8月 01 08:35:48 node1 kubelet[1015]: I0801 08:35:48.006454 1015 server.go:150] "Starting to listen" address="0.0.0.0" port=10250 8月 01 08:35:48 node1 kubelet[1015]: I0801 08:35:48.006791 1015 fs_resource_analyzer.go:67] "Starting FS ResourceAnalyzer"
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