Browser access page error
Error details
Possible causes:
The request header is too large, which is usually caused by writing a large value in the cookie. Access too frequently, the browser cache is too large, resulting in errors.
Solution:
The client can clean up the cookie cache
the server adjusts the size of nginx buffer and adds two lines
http
{
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
......
}
Restart service
ERROR: Exception when publishing, exception message [Exec exit status not zero. Status [137]] Build step 'Send files or execute commands over SSH' changed build result to UNSTABLE Finished: UNSTABLE
At present, there is no better information to support this error. Now record it. Due to too many execution script directories, try to put the script under the remote directory of the remote server
Virtual machine startup error XFS
XFS: log mount mount/recovery failed: error – 117 when the virtual machine is started. In fact, the virtual machine cannot be mounted. The solution is as follows:
Solution:
① Restart the virtual machine. After entering the startup interface, press e to enter the editing interface
② Find the line of linux16 and make the following modifications
change RO to RW init =/sysboot/bin/sh, and delete console = ttys0
③ After modification, press Ctrl + X to start
④ a few minutes after startup, the command line will appear
⑤ On the command line, enter systemctl status sysboot Mount
⑥ enter XFS_ Repair – V – L path in the figure above
⑦ wait for the file to be cleaned before the command line appears. Enter the command reboot to restart the virtual machine
libs/granite/ui/components/shell/header/user/User has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0
Specific corresponding version:
JDK 1.1 = 45 JDK 1.2 = 46 JDK 1.3 = 47 JDK 1.4 = 48 Java SE 5.0 = 49 Java SE 6.0 = 50 Java SE 7 = 51 Java SE 8 = 52 Java SE 9 = 53 Java 10 = 54 Java 11 = 55 Java 12 = 56 …
So the question is, how to replace the version?
First of all, the easiest way is to check whether java has been installed through the command: java -version
View the java package of yum source: yum list java*
Install java108jdk software: yum -y install java-1.8.0-openjdk****
Verify that the installation is successful, check the java version: java -version
When running the program under CentOS 8, I found the error while loading shared libraries. I didn’t know the solution for a while. Now I have explored and solved it, as follows:
1. Find the path where the missing library is located {find/- name} XXX
2. Put the path in /etc/ld.so.conf
3. At the command line, enter ldconfig
4. No error will be reported after compiling again
The docker image cannot be deleted. If you view the image through docker images, it clearly exists, but it cannot be deleted.
Deletion prompt: error: no such image: XXXXXXXX
The specific screenshots are as follows:
Problem solving:
get into
cd /var/lib/docker/image/overlay2/imagedb/content/sha256
This directory is all the image files in docker
Which to delete? Don’t panic, image ID in docker images can determine the image file.
Delete the file after confirmation: RM -rf + file name
After deletion, there is no in the docker images list.
2 0 C:\Users\Administrator\Desktop\abcd\main.cpp In file included from main.cpp
99 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fpos_t' has not been declared
101 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::clearerr' has not been declared
102 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fclose' has not been declared
103 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::feof' has not been declared
104 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::ferror' has not been declared
105 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fflush' has not been declared
106 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fgetc' has not been declared
107 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fgetpos' has not been declared
108 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fgets' has not been declared
109 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fopen' has not been declared
110 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fprintf' has not been declared
111 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fputc' has not been declared
112 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fputs' has not been declared
113 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fread' has not been declared
114 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::freopen' has not been declared
115 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fscanf' has not been declared
116 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fseek' has not been declared
117 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fsetpos' has not been declared
118 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::ftell' has not been declared
119 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::fwrite' has not been declared
120 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::getc' has not been declared
121 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::getchar' has not been declared
124 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::gets' has not been declared
126 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::perror' has not been declared
127 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::printf' has not been declared
128 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::putc' has not been declared
129 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::putchar' has not been declared
130 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::puts' has not been declared
131 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::remove' has not been declared
132 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::rename' has not been declared
133 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::rewind' has not been declared
134 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::scanf' has not been declared
135 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::setbuf' has not been declared
136 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::setvbuf' has not been declared
137 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::sprintf' has not been declared
138 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::sscanf' has not been declared
139 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::tmpfile' has not been declared
141 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::tmpnam' has not been declared
143 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::ungetc' has not been declared
144 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::vfprintf' has not been declared
145 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::vprintf' has not been declared
146 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::vsprintf' has not been declared
175 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::snprintf' has not been declared
176 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::vfscanf' has not been declared
177 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::vscanf' has not been declared
178 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::vsnprintf' has not been declared
179 11 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '::vsscanf' has not been declared
185 22 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '__gnu_cxx::snprintf' has not been declared
186 22 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '__gnu_cxx::vfscanf' has not been declared
187 22 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '__gnu_cxx::vscanf' has not been declared
188 22 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '__gnu_cxx::vsnprintf' has not been declared
189 22 C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++\cstdio [Error] '__gnu_cxx::vsscanf' has not been declared
C:\Users\Administrator\Desktop\abcd\main.cpp In function 'int main()':
5 30 C:\Users\Administrator\Desktop\abcd\main.cpp [Error] 'freopen' was not declared in this scope
29 C:\Users\Administrator\Desktop\abcd\Makefile.win recipe for target 'main.o' failed
The above problem is that there is a problem with the dev environment. After closing dev, open it again and you will be prompted
Solution, reinstall dev
Error Messages:
Dec 09 15:26:16 test01 network[7599]: Bringing up loopback interface: [ OK ] Dec 09 15:26:16 test01 network[7599]: Bringing up interface ens33: Error: Connection activation failed: No suitable device found for this connection. Dec 09 15:26:16 test01 network[7599]: [FAILED] Dec 09 15:26:16 test01 network[7599]: RTNETLINK answers: File exists Dec 09 15:26:16 test01 network[7599]: RTNETLINK answers: File exists Dec 09 15:26:16 test01 network[7599]: RTNETLINK answers: File exists Dec 09 15:26:16 test01 network[7599]: RTNETLINK answers: File exists Dec 09 15:26:16 test01 network[7599]: RTNETLINK answers: File exists Dec 09 15:26:16 test01 network[7599]: RTNETLINK answers: File exists Dec 09 15:26:16 test01 network[7599]: RTNETLINK answers: File exists Dec 09 15:26:16 test01 network[7599]: RTNETLINK answers: File exists Dec 09 15:26:16 test01 network[7599]: RTNETLINK answers: File exists Dec 09 15:26:16 test01 systemd[1]: network.service: control process exited, code=exited status=1 Dec 09 15:26:16 test01 systemd[1]: Failed to start LSB: Bring up/down networking. Dec 09 15:26:16 test01 systemd[1]: Unit network.service entered failed state. Dec 09 15:26:16 test01 systemd[1]: network.service failed.
Solution:
Stop NetworkManager service
systemctl stop NetworkManager
systemctl disable NetworkManager
restart network
systemctl restart network
Reason:
The reason for this failure under centos is that there is a conflict between the two services that start the network: network and NetworkManager, I think.
Fundamentally, the conflict is caused by NetworkMaganager (NM), so disable NetworkManager to solve it. Just restart it.
Error reported: Bridge docker0 failed: exchange full
bridge docker0 failed: exchange full 
you can remove the restriction by creating another network bridge. When docker run creates a container, you specify our own network bridge. Of course, we only support 1024 network bridges. You can use this method to create unlimited network bridges as long as there is enough memory to create a docker container
1. View Bridge
[root@bj ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
0c49b2d827f5 bridge bridge local
8ec28361848f host host local
3b929af4064c none null local
2. Create Bridge
[root@bj ~]# docker network create xinnet
[root@bj ~]# docker network ls
NETWORK ID NAME DRIVER SCOPE
0c49b2d827f5 bridge bridge local
8ec28361848f host host local
3b929af4064c none null local
604ccc72661a xinnet bridge local
[root@bj ~]# docker network inspect xinnet
[
{
"Name": "xinnet",
"Id": "604ccc72661af52f0889bfea4664d70e899427418b1a9301d8a46e6ce95e46ee",
"Created": "2021-12-08T13:50:43.973901095+08:00",
"Scope": "local",
"Driver": "bridge",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": {},
"Config": [
{
"Subnet": "172.19.0.0/16",
"Gateway": "172.19.0.1"
}
]
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"e92f81a6fe11b6e2c82de38fbe4e06a9cfcdb1dcd1f64485e5b805e3714bd163": {
"Name": "zabbix-agent-22000",
"EndpointID": "b7ac1a57b2e91435c676a7b4203ab50237893a3714aff185d8cdac45b1251356",
"MacAddress": "02:42:ac:13:00:02",
"IPv4Address": "172.19.0.2/16",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {}
}
]
3. Create container specified bridge – network
[root@bj ~]# docker run -m 100m --name zabbix-agent-22001 --network=xinnet -e HOSTNAME="TEST22001" -e ZBX_HOSTNAME="TEST22001" -e ZBX_SERVER_HOST="10.20.9.246" -p 22001:10050 -e ZBX_SERVER_PORT=10051 -d zabbix-agent:4.0.35
[root@bj ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e92f81a6fe11 zabbix-agent:4.0.35 "/usr/bin/tini -- /u…" 15 minutes ago Up 15 minutes 0.0.0.0:22001->10050/tcp zabbix-agent-22001
If – network is not specified, the created containers will be hung on docker0 by default, and the IP of docker0 interface on the local host will be used as the default gateway for all containers
Gbase8a install Error:
Environmental Checking on gcluster nodes.
Cgconfig service is not exist on host [‘192.168.48.18’, ‘192.168.48.19’, ‘192.168.48.20’], resource manangement can not be used, continue ([Y,y]/[N,n])?
Check whether the following installation packages are installed, if they are missing, please install
yum list installed | grep libcgroup
yum list installed | grep libcgroup-tools
Install if missing
yum -y install libcgroup
yum -y install libcgroup-tools
Set CGroup service startup after installation
systemctl enable cgconfig.service
Start cgconfig service
systemctl start cgconfig.service
Here if the execution reports an error.
Job for cgconfig.service failed because the control process exited with error code. See “systemctl status cgconfig.service” and “journalctl -xe” for details.
Then use the command to check the cause of the error
systemctl status cgconfig.service
If the reasons are as follows.
Error: cannot mount cpu to /cgroup/cpu: Device or resource busy
or
Failed to start Control Group configuration service.
then execute
cgclear - unload the cgroup filesystem
systemctl start cgconfig.service
Then restart the installer.
redis-cli -p 12345 [root@localhost ~]# redis-cli -p 6379 127.0.0.1:6379> auth "123456" OK 127.0.0.1:6379> info # Server redis_version:3.2.12 redis_git_sha1:00000000 redis_git_dirty:0 redis_build_id:7897e7d0e13773f redis_mode:standalone os:Linux 3.10.0-1127.19.1.el7.x86_64 x86_64 arch_bits:64 multiplexing_api:epoll gcc_version:4.8.5 process_id:1242 run_id:XXX tcp_port:6379 uptime_in_seconds:1186639 uptime_in_days:13 hz:10 lru_clock:11977524 executable:/usr/bin/redis-server config_file:/etc/redis.conf # Clients connected_clients:1 client_longest_output_list:0 client_biggest_input_buf:0 blocked_clients:0 # Memory used_memory:3486652368 used_memory_human:3.25G used_memory_rss:3548164096 used_memory_rss_human:3.30G used_memory_peak:3486886808 used_memory_peak_human:3.25G total_system_memory:16637546496 total_system_memory_human:15.49G used_memory_lua:37888 used_memory_lua_human:37.00K maxmemory:0 maxmemory_human:0B maxmemory_policy:noeviction mem_fragmentation_ratio:1.02 mem_allocator:jemalloc-3.6.0 # Persistence loading:0 rdb_changes_since_last_save:8 rdb_bgsave_in_progress:0 rdb_last_save_time:1639367433 rdb_last_bgsave_status:ok rdb_last_bgsave_time_sec:20 rdb_current_bgsave_time_sec:-1 aof_enabled:0 aof_rewrite_in_progress:0 aof_rewrite_scheduled:0 aof_last_rewrite_time_sec:-1 aof_current_rewrite_time_sec:-1 aof_last_bgrewrite_status:ok aof_last_write_status:ok # Stats total_connections_received:3831251 total_commands_processed:18072447 instantaneous_ops_per_sec:15 total_net_input_bytes:1538227697 total_net_output_bytes:907587826299 instantaneous_input_kbps:0.61 instantaneous_output_kbps:3.07 rejected_connections:0 sync_full:0 sync_partial_ok:0 sync_partial_err:0 expired_keys:0 evicted_keys:0 keyspace_hits:7332354 keyspace_misses:6533 pubsub_channels:0 pubsub_patterns:0 latest_fork_usec:2025 migrate_cached_sockets:0 # Replication role:master connected_slaves:0 master_repl_offset:0 repl_backlog_active:0 repl_backlog_size:1048576 repl_backlog_first_byte_offset:0 repl_backlog_histlen:0 # CPU used_cpu_sys:1586.86 used_cpu_user:625.00 used_cpu_sys_children:3198.40 used_cpu_user_children:46091.06 # Cluster cluster_enabled:0 # Keyspace db0:keys=936,expires=0,avg_ttl=0
redis maxmemory:0 There is no limit to the amount of memory that can be used.
linux
[root@localhost redis]# sysctl -a|grep overcommit_memory
vm.overcommit_memory = 0
vm.overcommit_memory = 0 Heuristic The size of the virtual memory allocated for this request and the current free physical memory on the system plus swap determine whether to release it. When the system allocates virtual address space for the application process, it determines whether the size of the currently requested virtual address space exceeds the remaining memory size, and if it does, the virtual address space allocation fails.
When redis saves in-memory data to disk, in order to prevent the main process from falsely dying, it forks a child process to complete this save operation. However, the forked subprocess will need to allocate the same amount of memory as the main process, which is equivalent to double the amount of memory needed, and if there is not enough memory available to allocate the required memory, the forked subprocess will fail to save the data to disk.
/etc/redis.conf
[root@localhost etc]# more redis.conf |grep “stop-writes-on-bgsave-error”
stop-writes-on-bgsave-error yes
stop-writes-on-bgsave-error: Whether to continue processing Redis write commands when generating RDB files with errors, the default yes Redis does not allow users to perform any update operations
Reasons.
1 The memory of redis itself is not limited. maxmemory:0.
2 redis forks the same memory as the main process when it forks the process to save data, which is memory double.
3 linux server vm.overcommit_memory = 0, which does not allow excessive memory overcommits.
4 redis configuration file default stop-writes-on-bgsave-error, which does not allow users to exceed when writes fail.
Optimization suggestions.
Modify vm.overcommit_memory = 0 vm.overcommit_memory = 1
Today, when the toad adjustment setting of the software is completed, click OK to always report
error: the following files specified on the executables tab could not be found: TNS Ping, as shown in the following figure
in fact, it is mainly caused by the setting problems in other places in the option, here we just need to modify the setting,
Select View toad options editor executables TNS Ping. Then check whether the path of your own command in the figure below is correct, or you can directly click the “auto search” button to automatically obtain the correct path 
After that, click OK in other options in toad, and no error will be reported.