stay https://blog.csdn.net/zly_ On the basis of this blog post 9117 / article / details / 83349778, we found another error when starting redis. The error content is as follows
➜ 7000 ../redis-server redis.conf &
[1] 11045
11045:C 24 Oct 2018 19:26:52.320 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
11045:C 24 Oct 2018 19:26:52.320 # Redis version=999.999.999, bits=64, commit=54e8dd11, modified=0, pid=11045, just started
11045:C 24 Oct 2018 19:26:52.320 # Configuration loaded
11045:M 24 Oct 2018 19:26:52.322 * Increased maximum number of open files to 10032 (it was originally set to 7168).
11045:M 24 Oct 2018 19:26:52.323 # Unrecoverable error: corrupted cluster config file.
The literal meaning is a damaged cluster configuration. Similarly, find the corresponding error throw point in the source code and find the following information
1. The output point of the error log is the code below
fmterr:
serverLog(LL_WARNING,
"Unrecoverable error: corrupted cluster config file.");
zfree(line);
if (fp) fclose(fp);
exit(1);
}
According to the source code interpretation found that we did not build nodes.conf By default, this method returns a C_ Err, and then the caller clusterinit function creates a new file and a cluster. The overall code of clusterloadconfig function is as follows. But now I found this document and read it to prove it wrong redis.conf There is an error in the configuration file. After searching the configuration file, it is found that the parameter of cluster config file is configured incorrectly, and it is changed to cluster config file nodes.conf Problem solving.
/* Load the cluster config from 'filename'.
*
* If the file does not exist or is zero-length (this may happen because
* when we lock the nodes.conf file, we create a zero-length one for the
* sake of locking if it does not already exist), C_ERR is returned.
* If the configuration was loaded from the file, C_OK is returned. */
int clusterLoadConfig(char *filename) {
FILE *fp = fopen(filename,"r");
struct stat sb;
char *line;
int maxline, j;
if (fp == NULL) {
if (errno == ENOENT) {
return C_ERR;
} else {
serverLog(LL_WARNING,
"Loading the cluster node config from %s: %s",
filename, strerror(errno));
exit(1);
}
}
/* Check if the file is zero-length: if so return C_ERR to signal
* we have to write the config. */
if (fstat(fileno(fp),&sb) != -1 && sb.st_size == 0) {
fclose(fp);
return C_ERR;
}
/* Parse the file. Note that single lines of the cluster config file can
* be really long as they include all the hash slots of the node.
* This means in the worst possible case, half of the Redis slots will be
* present in a single line, possibly in importing or migrating state, so
* together with the node ID of the sender/receiver.
*
* To simplify we allocate 1024+CLUSTER_SLOTS*128 bytes per line. */
maxline = 1024+CLUSTER_SLOTS*128;
line = zmalloc(maxline);
while(fgets(line,maxline,fp) != NULL) {
int argc;
sds *argv;
clusterNode *n, *master;
char *p, *s;
/* Skip blank lines, they can be created either by users manually
* editing nodes.conf or by the config writing process if stopped
* before the truncate() call. */
if (line[0] == '\n' || line[0] == '\0') continue;
/* Split the line into arguments for processing. */
argv = sdssplitargs(line,&argc);
if (argv == NULL) goto fmterr;
/* Handle the special "vars" line. Don't pretend it is the last
* line even if it actually is when generated by Redis. */
if (strcasecmp(argv[0],"vars") == 0) {
for (j = 1; j < argc; j += 2) {
if (strcasecmp(argv[j],"currentEpoch") == 0) {
server.cluster->currentEpoch =
strtoull(argv[j+1],NULL,10);
} else if (strcasecmp(argv[j],"lastVoteEpoch") == 0) {
server.cluster->lastVoteEpoch =
strtoull(argv[j+1],NULL,10);
} else {
serverLog(LL_WARNING,
"Skipping unknown cluster config variable '%s'",
argv[j]);
}
}
sdsfreesplitres(argv,argc);
continue;
}
/* Regular config lines have at least eight fields */
if (argc < 8) goto fmterr;
/* Create this node if it does not exist */
n = clusterLookupNode(argv[0]);
if (!n) {
n = createClusterNode(argv[0],0);
clusterAddNode(n);
}
/* Address and port */
if ((p = strrchr(argv[1],':')) == NULL) goto fmterr;
*p = '\0';
memcpy(n->ip,argv[1],strlen(argv[1])+1);
char *port = p+1;
char *busp = strchr(port,'@');
if (busp) {
*busp = '\0';
busp++;
}
n->port = atoi(port);
/* In older versions of nodes.conf the "@busport" part is missing.
* In this case we set it to the default offset of 10000 from the
* base port. */
n->cport = busp ? atoi(busp) : n->port + CLUSTER_PORT_INCR;
/* Parse flags */
p = s = argv[2];
while(p) {
p = strchr(s,',');
if (p) *p = '\0';
if (!strcasecmp(s,"myself")) {
serverAssert(server.cluster->myself == NULL);
myself = server.cluster->myself = n;
n->flags |= CLUSTER_NODE_MYSELF;
} else if (!strcasecmp(s,"master")) {
n->flags |= CLUSTER_NODE_MASTER;
} else if (!strcasecmp(s,"slave")) {
n->flags |= CLUSTER_NODE_SLAVE;
} else if (!strcasecmp(s,"fail?")) {
n->flags |= CLUSTER_NODE_PFAIL;
} else if (!strcasecmp(s,"fail")) {
n->flags |= CLUSTER_NODE_FAIL;
n->fail_time = mstime();
} else if (!strcasecmp(s,"handshake")) {
n->flags |= CLUSTER_NODE_HANDSHAKE;
} else if (!strcasecmp(s,"noaddr")) {
n->flags |= CLUSTER_NODE_NOADDR;
} else if (!strcasecmp(s,"nofailover")) {
n->flags |= CLUSTER_NODE_NOFAILOVER;
} else if (!strcasecmp(s,"noflags")) {
/* nothing to do */
} else {
serverPanic("Unknown flag in redis cluster config file");
}
if (p) s = p+1;
}
/* Get master if any. Set the master and populate master's
* slave list. */
if (argv[3][0] != '-') {
master = clusterLookupNode(argv[3]);
if (!master) {
master = createClusterNode(argv[3],0);
clusterAddNode(master);
}
n->slaveof = master;
clusterNodeAddSlave(master,n);
}
/* Set ping sent / pong received timestamps */
if (atoi(argv[4])) n->ping_sent = mstime();
if (atoi(argv[5])) n->pong_received = mstime();
/* Set configEpoch for this node. */
n->configEpoch = strtoull(argv[6],NULL,10);
/* Populate hash slots served by this instance. */
for (j = 8; j < argc; j++) {
int start, stop;
if (argv[j][0] == '[') {
/* Here we handle migrating / importing slots */
int slot;
char direction;
clusterNode *cn;
p = strchr(argv[j],'-');
serverAssert(p != NULL);
*p = '\0';
direction = p[1]; /* Either '>' or '<' */
slot = atoi(argv[j]+1);
if (slot < 0 || slot >= CLUSTER_SLOTS) goto fmterr;
p += 3;
cn = clusterLookupNode(p);
if (!cn) {
cn = createClusterNode(p,0);
clusterAddNode(cn);
}
if (direction == '>') {
server.cluster->migrating_slots_to[slot] = cn;
} else {
server.cluster->importing_slots_from[slot] = cn;
}
continue;
} else if ((p = strchr(argv[j],'-')) != NULL) {
*p = '\0';
start = atoi(argv[j]);
stop = atoi(p+1);
} else {
start = stop = atoi(argv[j]);
}
if (start < 0 || start >= CLUSTER_SLOTS) goto fmterr;
if (stop < 0 || stop >= CLUSTER_SLOTS) goto fmterr;
while(start <= stop) clusterAddSlot(n, start++);
}
sdsfreesplitres(argv,argc);
}
/* Config sanity check */
if (server.cluster->myself == NULL) goto fmterr;
zfree(line);
fclose(fp);
serverLog(LL_NOTICE,"Node configuration loaded, I'm %.40s", myself->name);
/* Something that should never happen: currentEpoch smaller than
* the max epoch found in the nodes configuration. However we handle this
* as some form of protection against manual editing of critical files. */
if (clusterGetMaxEpoch() > server.cluster->currentEpoch) {
server.cluster->currentEpoch = clusterGetMaxEpoch();
}
return C_OK;
fmterr:
serverLog(LL_WARNING,
"Unrecoverable error: corrupted cluster config file.");
zfree(line);
if (fp) fclose(fp);
exit(1);
}
Done!
