error while loading shared libraries: libjson.so.0: cannot open shared object file: No such file or
Solution:
sudo vim /etc/ld.so.confAdd /usr/local/lib to the file, which is the path is libjson.so.0 located
include /etc/ld.so.conf.d/*.conf
/usr/local/lib
Finally, the terminal inputs sudo ldconfig
Questasim Error（vsim-12110）
Questasim simulation optimization acceleration problem (object no signal, could not see waveform)
Makefile script:
Compilation error:
Solution:
Remove -novopt, which is no longer used in modelsim after version 10.7, so as long as you do not use -novopt, no error will be reported. So how can we see the signal and see the waveform while using optimization?
Here I modify modelsim.ini
Find modelsim.ini file address
Modify VoptFlow = 1
In addition, you can replace -novopt with -voptargs= “+acc”
1. Version information:
CentOS version: CentOS release 6.9 (final)
xmapp version: xampp-linux-x64-5.6.40-1-installer.run
2. Error message:
[root@localhost ~]# /opt/lampp/lampp
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/bin/bash: error while loading shared libraries: libdl.so.2: cannot open shared object file: No such file or directory
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
id: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/share/xampp/xampplib: line 11: test: -ne: unary operator expected
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
XAMPP: egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
netstat: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
netstat: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/httpd: error while loading shared libraries: librt.so.1: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
XAMPP: hostname: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
netstat: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
XAMPP: /bin/sh: error while loading shared libraries: libdl.so.2: cannot open shared object file: No such file or directory
egrep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
netstat: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
/opt/lampp/bin/gettext: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory
3. Solution:
1. Open /opt/lampp/lampp
vim /opt/lampp/lampp
2. Edit
Modify this line
export LD_ASSUME_KERNEL=2.2.5
to
export LD_ASSUME_KERNEL=2.8.0
Find a word in the file [under the command line/keyword, enter to find, enter n to find the next]
At that time, my problem was that the URDF model could be built, but the check failed,
Finally, it is found that the path is wrong. Under the file you need to check, right-click the mouse and select open in the integrated terminal, as shown in the following figure 
Check successfully under this path
Cluster calico deployed by kuberadm runs incorrectly
report errors:
1, check calico
kubectl get pods -n kube-system
Calico-node 0/1 Running
2. check the log
kubectl describe calico-node-gdv9r -n kube-system
Calico error:
Readiness probe failed: calico/node is not ready: BIRD is not ready: Error querying BIRD: unable to connect to BIRDv4 socket: dial unix /var/run/bird/bird.ctl: connect: no such file or directory
Solution:
1. Remove the DOWN NIC/interface that Docker and Calico errors.
ip link docker0
2, delete Calico pod (pod will be rebuilt and run by k8s cluster after deletion)
kubectl delete pod calico-node-gdv9r -n kube-system
3, check Calico again and find it is normal</ font>
kubectl get pods -n kube-system
Error: pymysql.err OperationalError: (1045, “Access denied for user ‘root’@‘192.168.118.44’ (using password: YES)”)
Possible problems:
1. Firewall blocking,
Solution: log in to the server and turn off the firewall
systemctl stop firewalld.service
2. User empowerment (the root user I use here)
Solution: log in to the MySQL database for empowerment
grant all privileges on *.* to 'root'@'%' identified by 'password';
flush privileges;
3. Check whether the password is entered incorrectly
Linux Mint installs linuxbrew and resolves the boot error
Errors are reported as follows
Solution:
Checking the **.profile file** in the user directory, I found that eval was linked to the previous line, presumably because of a bug in the installation of the jetbrains toolbox
change Eval to the next line and save it (with administrator permission)
make report an error as below:
“fontconfig-2.12.1/src/fcmatch.c:324:63: error: ‘PRI_CHAR_WIDTH_STRONG’ undeclared here (not in a function); did you mean ‘PRI_WIDTH_STRONG’?”
"fontconfig-2.12.1/src/fcmatch.c:324:63: error: ‘PRI_CHAR_WIDTH_STRONG' undeclared here (not in a function); did you mean ‘PRI_WIDTH_STRONG’?"
Solution:
Enter the source code directory. My path is
1.
fontconfig-2.12.1/fontconfig/fontconfig.h
Found #define FC_CHAR_WIDTH “charwidth” /* Int / deleted
Add #define FC_CHARWIDTH “charwidth” / Int */
#define FC_CHAR_WIDTH FC_CHARWIDTH
2.
fontconfig-2.12.1/src/fcobjs.h
Find FC_OBJECT (CHAR_WIDTH, FcTypeInteger, NULL) and delete it.
Add FC_OBJECT (CHARWIDTH, FcTypeInteger, NULL)
3.
fontconfig-2.12.1/src/fcobjshash.gperf
Find “CHARWIDTH”, FC_CHAR_WIDTH_OBJECT and delete it.
Add “charwidth”,FC_CHARWIDTH_OBJECT
4.
fontconfig-2.12.1/src/fcobjshash.h
Find {(int)(long)&((struct FcObjectTypeNamePool_t *)0)->FcObjectTypeNamePool_str45,FC_CHAR_WIDTH_OBJECT}, delete
add {(int)(long)&((struct FcObjectTypeNamePool_t *)0)->FcObjectTypeNamePool_str45,FC_CHARWIDTH_OBJECT},
End, make && make install successful
is to modify and replace a few macro definitions, you can happily edit cairo!
Although the high version of fontconfig does not have this error, but the cross-compiler reported that the other failed to solve
Problem background
When using mybatis, an error is reported that the master data source cannot be found:
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
### Error updating database. Cause: com.baomidou.dynamic.datasource.exception.CannotFindDataSourceException: dynamic-datasource can not find primary datasource
### The error may exist in com/lanran/transactional/dao/PaymentMapper.java (best guess)
### The error may involve com.lanran.transactional.dao.PaymentMapper.insertBatchSomeColumn
### The error occurred while executing an update
### Cause: com.baomidou.dynamic.datasource.exception.CannotFindDataSourceException: dynamic-datasource can not find primary datasource
Solution
1. Because the multi-source configuration dependency of mybatisplus is added, but the configuration file does not write the related configuration of multi-source, an error is reported
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>dynamic-datasource-spring-boot-starter</artifactId>
<version>3.5.0</version>
</dependency>
Method 1: if you don’t use multi-source configuration, remove this dependency
Method 2: application set multi-source configuration
server:
port: 40001
spring:
datasource:
druid:
stat-view-servlet:
enabled: true
dynamic:
# Configure the global druid parameter, please configure as needed
druid:
initial-size: 5
max-active: 8
min-idle: 3
max-wait: 1000
validation-query: 'select 1'
datasource:
master:
username: root
password: 123456
url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
driver-class-name: com.mysql.cj.jdbc.Driver
slave_1:
username: root
password: 123456
url: jdbc:mysql://localhost:3306/test2?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
driver-class-name: com.mysql.cj.jdbc.Driver
when using make menuconfig to configure Linux corl error: target ‘menuconfig’ failed to recipe.
Solution:
1. Check whether the libncurses5-dev library is installed
If it’s not installed, install with the command: sudo apt-get install libncurses5-dev
2. If it’s installed, it’s because the terminal window is too small. It’s solved by enlarging the window
E xx: xxxx:xx ERR thread 0x536753929472 setscheduler failed Operation not permitted
The “setscheduler failed Operation not permitted” error occurred when setting the thread priority via sched_setscheduler.
int ret = sched_setscheduler(pthread_gettid_np((pthread_t)pHandle), SCHED_RR, &prio);
Solution:
add the following contents to the process startup parameters:
capabilities SYS_NICE
init.target.rc
service xxxxxx /system/vendor/bin/xxxxxx
class core
user system
group camera input graphics
disabled
onrestart restart evs_driver
onrestart restart qcarcam_hal
capabilities SYS_NICEAbout CentOS 7 virtual machine startup network service startup failure: ob for network service failed because the control process exited with error code
As shown in the following figure:
Question:
When using CentOS 7 system, after changing the static IP, it is found that the network service cannot be restarted, and after using the IP addr or ipconfig command, it is found that the changed static IP address is not displayed and mysteriously disappears. The connection to the external network is also different, and the Ping is blocked.
Error reason:
There is a conflict between NetworkManager and Network, there are two network management tools on CentOS system, NetworkManager and Network, if both of them are configured, it will cause a conflict between them. As we usually use Network to configure our virtual machine static ip address, but sometimes our improper operation will cause NetworkManager to configure automatically, so there is a conflict between the two. Possible reasons for this are: we shut down the virtual machine without shutting it down first or we don’t use the poweroff command to shut down the machine.
Solution:
Just turn off the NetworkManager service directly, that is, carry out the following steps:
solution 1:
①,service NetworkManager stop# turn off the NetworkManager service
②,chkconfig NetworkManager off# prohibit startup
③ restart the systemsolution 2:
② Choose one of the following commands: (a temporary modification, a permanent modification)
systemctl stop networkmanager# temporarily close the service
systemctl disable networkmanager# permanently close the service
② restart the system